CN104833217A - Waste heat and complementary energy comprehensive utilization power generation device and power generation method - Google Patents

Waste heat and complementary energy comprehensive utilization power generation device and power generation method Download PDF

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Publication number
CN104833217A
CN104833217A CN201510242945.9A CN201510242945A CN104833217A CN 104833217 A CN104833217 A CN 104833217A CN 201510242945 A CN201510242945 A CN 201510242945A CN 104833217 A CN104833217 A CN 104833217A
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China
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saturated vapor
waste heat
parameter
heat boiler
boiler
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CN104833217B (en
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胡风华
徐忠
彭杰
王佳明
王磊
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Smelting Vast Of Heaven Energy-Conserving And Environment-Protective Technology Co Ltd In Hunan
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Smelting Vast Of Heaven Energy-Conserving And Environment-Protective Technology Co Ltd In Hunan
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

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  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention provides a waste heat and complementary energy comprehensive utilization power generation device. The device comprises a generator (1), a turbine engine (2) for driving the generator (1), a steel rolling heating furnace steam pocket (3), a steelmaking converter steam accumulator (4), a sintering smoke vent waste heat boiler (5), an annular cooler waste heat boiler (6) and a saturated steam superheating boiler (8), wherein steam output pipelines of the steel rolling heating furnace steam pocket (3), the steelmaking converter steam accumulator (4), the sintering smoke vent waste heat boiler (5) and the annular cooler waste heat boiler (6) are respectively connected to a saturated steam inlet (80601) of a superheater of the saturated steam superheating boiler (8), and a superheated steam outlet (80702) of the saturated steam superheating boiler (8) is connected to a main steam inlet (201) of the turbine engine (2) by an superheated steam main pipeline (L1a). The waste heat use ratio is high, a system is flexible, the outage rate of a steam turbine generator unit is low, the occupied area is small, and the investment cost is low.

Description

A kind of residual heat and energy comprehensive utilization TRT and electricity-generating method
Technical field
The present invention relates to a kind of afterheat generating system, be specifically related to a kind of residual heat and energy comprehensive utilization TRT and electricity-generating method.
Background technology
Iron and steel enterprise is energy intensive enterprise, and energy resource consumption is huge, accounts for 16% of national total energy consumption, and energy utilization rate is 30% ~ 50%, and energy consumption per ton steel is higher than developed country by about 20%.In steel manufacture process, produce and have a large amount of coal gas, high-temperature flue gas, steam, residual heat and energy can be recycled greatly.
At present, the coal gas that most Large Steel ironworks is reclaimed supplies the steel plant such as coke oven, hot-blast stove, heating furnace from production process mainly as fuel.The coal gas that this part main technique utilizes accounts for 50% ~ 80% of coal gas total resources, remainder is for power plant for self-supply's generating, mode has clean burn (or mixing burning) gas boiler to generate electricity and gas combustion-gas vapor combined cycle (CCPP), and redundance diffuses.According to investigations, China's Key Iron And Steel blast furnace gas diffusing rate average out to 7.4%, coke oven gas discharge rate average out to 3.8%, coal gas of converter ton steel reclaims and only accounts for 2/3rds of recyclable amount.And in the developed country such as Japanese, German, all recyclings substantially of steel plant's by-product gas, without diffusing.
The waste heat recovery of heat sinter cooling is at present more universal, but recovering effect does not all reach design level, mainly due to sinter fume amount and temperature fluctuation large, the design load of getting is with under desirable state.
In pneumatic steelmaking operation, iron and steel per ton can produce 50 ~ 80kg steam, but due to converter be interrupted produce, steam be also be interrupted, current steam is discharged mostly.Also have Some Enterprises to reclaim saturated vapor, newly-built saturated vapor generating main building, but electricity generation system Chang Yingang iron process reason is shut down, utilization rate of waste heat is low.
In heating furnace steel making working procedure, also have a large amount of continuous print saturated vapors to produce, except productive life is used, most saturated vapor, is also discharged and slatterns.
Scattered waste heat, if do not reclaimed, is just wasted in vain.Current existing situation scattered sets up cogeneration station, as set up the remaining waste heat boiler of sintering and generating main building sintering plant central cooler is other, sets up Power Generation by BF Gas station in blast furnace region, sets up saturated vapor to generate electricity main building on steel mill side.Be reclaimed many waste heats like this, but set up numerous scattered little waste heat to postback power station, the problem of two aspects will be brought: one is that occupation of land is many, and investment is large, and operation expense is high; On the other hand, the thermal efficiency that part of waste heat reclaims is low, and the poor stability of system, outage rate is high.
If produce residual heat and energy scattered in each operation integrate utilization by being dispersed in iron and steel, not only will improve heat utilization efficiency, and reduce iron and steel energy consumption, also can reduce waste heat recovery investment and operating cost.
Summary of the invention
The object of the present invention is to provide a kind of residual heat and energy to fully utilize TRT, make full use of the waste gas produced in steel-making, steel rolling process, and utilize remaining coal gas, the comprehensively utilization of sintering device flue gas, central cooler flue gas in this class enterprise.
According to object of the present invention, a kind of residual heat and energy is provided to fully utilize TRT, this device comprises: generator, for driving the steam turbine of generator, heater for rolling steel drum, steelmaking converter steam accumulator, sintering smoke exhaust pipe waste heat boiler, central cooler waste heat boiler and having the overheated boiler of saturated vapor of superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater)
Wherein, the high parameter saturated vapor output channel of the high parameter saturated vapor output channel of heater for rolling steel drum, the high parameter saturated vapor output channel of steelmaking converter storage heater, sintering smoke exhaust pipe waste heat boiler is connected to the saturated vapor entrance of the superheater in the overheated boiler of saturated vapor respectively, the superheated steam outlet of the overheated boiler of saturated vapor is connected to the main air intake of steam turbine through vapours main pipeline, and central cooler waste heat boiler has high parameter drum
Wherein, from the high parameter saturated vapor output channel (L9) that the high parameter drum of central cooler waste heat boiler is drawn:
1) the saturated vapor entrance of the superheater in the overheated boiler of saturated vapor is connected to, or
2) when central cooler waste heat boiler has external type overheating device in addition, be connected to the steam inlet of the high parameter superheater of external type overheating device, and the steam (vapor) outlet of this high parameter superheater is connected to the main air intake of steam turbine by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline and/or is connected to the saturated vapor entrance of the superheater in the overheated boiler of saturated vapor by superheated steam branch road, or
3) when central cooler waste heat boiler has superheater in addition, be connected to the steam inlet of the built-in high parameter superheater in central cooler waste heat boiler, and in central cooler waste heat boiler, the steam (vapor) outlet of high parameter superheater is connected to the main air intake of steam turbine by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline and/or is connected to the saturated vapor entrance of the superheater in the overheated boiler of saturated vapor by superheated steam branch road; With
Wherein, the rotating shaft of steam turbine connects or drives the rotating shaft of generator, and optionally, the low parameter superheated steam outlet of central cooler waste heat boiler is connected to the filling mouth of steam turbine.
Therefore, according to first embodiment of the application, a kind of residual heat and energy is provided to fully utilize TRT, this device comprises: generator, for driving the steam turbine of generator, heater for rolling steel drum, steelmaking converter steam accumulator, sintering smoke exhaust pipe waste heat boiler, central cooler waste heat boiler and the overheated boiler of saturated vapor with superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater), the wherein high parameter saturated vapor output channel of heater for rolling steel drum, the high parameter saturated vapor output channel of steelmaking converter storage heater, the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler is connected to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor respectively, the superheated steam outlet of the overheated boiler of saturated vapor is connected to the main air intake of steam turbine through vapours main pipeline, central cooler waste heat boiler has central cooler waste heat boiler high parameter drum, and the high parameter saturated vapor output channel (L9) of drawing from the high parameter drum of central cooler waste heat boiler is also connected to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor, the rotating shaft of steam turbine connects or drives the rotating shaft of generator, and optionally, low parameter superheated steam outlet (such as via low parameter jet chimney) of central cooler waste heat boiler is connected to the filling mouth of steam turbine.
According to second embodiment of the application, a kind of residual heat and energy is provided to fully utilize TRT, this device comprises: generator, for driving the steam turbine of generator, heater for rolling steel drum, steelmaking converter steam accumulator, sintering smoke exhaust pipe waste heat boiler, central cooler waste heat boiler, external type overheating device set near central cooler waste heat boiler and there is the overheated boiler of saturated vapor of superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater), wherein: the high parameter saturated vapor output channel of heater for rolling steel drum, the high parameter saturated vapor output channel of steelmaking converter storage heater and the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler are connected to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor respectively, the superheated steam outlet of the overheated boiler of saturated vapor is connected to the main air intake of steam turbine through vapours main pipeline, central cooler waste heat boiler has central cooler waste heat boiler high parameter drum, the high parameter saturated vapor output channel (L9) of drawing from the high parameter drum of central cooler waste heat boiler is connected to the steam inlet of the high parameter superheater of external type overheating device, and the steam (vapor) outlet of this high parameter superheater is connected to the main air intake of steam turbine by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline, the rotating shaft of steam turbine connects or drives the rotating shaft of generator, and, optionally, low parameter superheated steam outlet (such as via low parameter pipeline) of central cooler waste heat boiler is connected to the filling mouth of steam turbine, with, optionally, separate from superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline the saturated vapor entrance that a superheated steam branch road is connected to the overheated boiler of saturated vapor.
According to the 3rd embodiment of the application, a kind of residual heat and energy is provided to fully utilize TRT, this device comprises: generator, for driving the steam turbine of generator, heater for rolling steel drum, steelmaking converter steam accumulator, sintering smoke exhaust pipe waste heat boiler, there is the central cooler waste heat boiler of built-in high parameter superheater and there is the overheated boiler of saturated vapor of superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater), wherein: the high parameter saturated vapor output channel of heater for rolling steel drum, the high parameter saturated vapor output channel of steelmaking converter storage heater and the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler are connected to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor respectively, the superheated steam outlet of the overheated boiler of saturated vapor is connected to the main air intake of steam turbine through vapours main pipeline, central cooler waste heat boiler has central cooler waste heat boiler high parameter drum, the high parameter saturated vapor output channel (L9) of drawing from the high parameter drum of central cooler waste heat boiler is connected to the steam inlet of the high parameter superheater in central cooler waste heat boiler, and in central cooler waste heat boiler, the steam (vapor) outlet of high parameter superheater is connected to the main air intake of steam turbine by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline, the rotating shaft of steam turbine connects or drives the rotating shaft of generator, and, optionally, low parameter superheated steam outlet (such as via low parameter pipeline) of central cooler waste heat boiler is connected to the filling mouth of steam turbine, with, optionally, separate from superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline the saturated vapor entrance that a superheated steam branch road is connected to the overheated boiler of saturated vapor.
In above-mentioned three kinds of embodiments of the application, wherein saturated vapor heating boiler has the configuration of " π " shape or " П " shape, wherein the side of " π " shape or " П " shape or right side set gradually saturated vapor heating boiler burner from top to bottom, the saturated vapor low temperature superheater of saturated vapor heating boiler, the saturated vapor high temperature superheater of saturated vapor heating boiler, and the opposite side of " π " shape or " П " shape or left side set gradually the evaporimeter of saturated vapor heating boiler and the economizer of saturated vapor heating boiler from top to bottom, and the top platform of " π " shape or " П " shape is the passage of combustion product gases, the left and right sides is by the combustion product gases channel connection in top platform portion.
Generally, the height h of burner 1(referring to the height of agent structure) is 1.0-10m, preferred 1.3-9m, more preferably 1.5-8m, more preferably 1.5-5m.Usually, the profile of burner is (similar) hexahedron or cube, such as, this burner has four furnace wall sides and is the one structure that rectangle and furnace bottom are rectangle (or cross section is rectangle), or the profile of this burner is cylindrical shape or oval cylinder.
Generally, the height h of the agent structure of the gas boiler of saturated vapor is heated 2for 3.5-40m (rice), preferred 4-35m (rice), more preferably 5-30m (rice), more preferably 7.5-25m (rice), as 13 meters or 14 meters.
Preferably, saturated vapor heating boiler drum is also provided with in saturated vapor heating boiler outside, from the saturated vapor pipeline that this saturated vapor heating boiler drum is drawn, the i.e. saturated vapor pipeline of the overheated boiler of saturated vapor, is also connected to the steam inlet of the saturated vapor low temperature superheater being positioned at the overheated boiler of saturated vapor.
Preferably, the hot water outlet of saturated vapor heating boiler economizer is connected to the first entrance of saturated vapor heating boiler drum by pipeline, first outlet of saturated vapor heating boiler drum is connected to the entrance of saturated vapor heating boiler evaporimeter by pipeline, the outlet of saturated vapor heating boiler evaporimeter is connected to the second entrance of saturated vapor heating boiler drum by pipeline, from the saturated vapor pipeline that the second outlet of saturated vapor heating boiler drum is drawn, the i.e. saturated vapor pipeline of the overheated boiler of saturated vapor, also the entrance of the saturated vapor low temperature superheater being positioned at the overheated boiler of saturated vapor is connected to.
Preferably, saturated vapor heating boiler also comprises: the saturated vapor heating boiler outlet bellows or the fan housing that are positioned at the cigarette airflow downstream of the economizer of saturated vapor heating boiler, the outlet bellows of saturated vapor heating boiler or fan housing are connected with air-introduced machine, and/or, the saturated vapor heating boiler attemperator between saturated vapor heating boiler saturated vapor low temperature superheater and saturated vapor heating boiler saturated vapor high temperature superheater.
Preferably, saturated vapor heating boiler burner comprises saturated vapor heating boiler burner, saturated vapor heating boiler furnace wall, saturated vapor heating boiler combustion chamber; Preferably, saturated vapor heating boiler combustion chamber is surrounded by saturated vapor heating boiler furnace wall, it is further preferred that saturated vapor heating boiler furnace wall adopts fire-resistant heat insulating material.
Preferably, saturated vapor heating boiler burner is arranged on saturated vapor heating boiler furnace wall; In addition, optionally, saturated vapor heating boiler furnace wall is also provided with saturated vapor heating boiler explosion proof door, saturated vapor heating boiler flame-observing hole and saturated vapor heating boiler wind-supplying mouth.
Preferably, saturated vapor heating boiler attemperator is positioned at the external world of saturated vapor heating boiler, and the two-port of saturated vapor heating boiler attemperator is connected to the steam (vapor) outlet of saturated vapor heating boiler saturated vapor low temperature superheater and the steam inlet of saturated vapor heating boiler saturated vapor high temperature superheater via two pipelines respectively; Preferably, the air-introduced machine of auxiliary equipment is provided as in the cigarette airflow downstream of economizer.
Preferably, air-introduced machine is connected by the outlet bellows of air-introduced machine airduct and saturated vapor heating boiler or fan housing, and/or, there is water pipe to be connected with the water inlet of saturated vapor heating boiler economizer.
Preferably, the gas inlet of the burner of saturated vapor heating boiler is connected with the airduct of gas piping and air blast respectively with air inlet.
Preferably, gas piping is provided with gas regulator.The coal gas that gas piping is carried is steel plant's residual gas.
Preferably, the heater for rolling steel drum saturated vapor pipeline of drawing from the steam (vapor) outlet of heater for rolling steel drum is being connected to the steam inlet of the saturated vapor low temperature superheater of saturated vapor heating boiler further with steel-making storage heater saturated vapor pipeline, the saturated vapor pipeline of high parameter saturated vapor output channel and saturated vapor heating boiler that sinters smoke exhaust pipe waste heat boiler after converging.
Preferably, heater for rolling steel drum saturated vapor pipeline, steel-making storage heater saturated vapor pipeline, the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler and the saturated vapor pipeline of saturated vapor heating boiler of drawing from the steam (vapor) outlet of heater for rolling steel drum are connected to the steam inlet of the saturated vapor low temperature superheater of saturated vapor heating boiler respectively.
Preferably, heater for rolling steel drum saturated vapor pipeline is provided with heater for rolling steel steam pressure control valve group.
Preferably, the steam (vapor) outlet of steelmaking converter drum is connected with the steam inlet of storage heater by steelmaking converter drum saturated vapor pipeline.
Preferably, steelmaking converter drum saturated vapor pipeline is provided with steelmaking converter drum control valve group and/or steelmaking converter drum check-valves.
Preferably, accumulator outlet saturated vapor pipeline is provided with check-valves, and/or accumulator outlet saturated vapor pipeline is provided with steam pressure control valve group.
Preferably, the steam drain of steam turbine is connected to the steam inlet of condenser, and/or the condensate water outlet of condenser is connected with the entrance of condensate pump, and condensate pump outlet is connected with condensate pipe.
Preferably, condensate pipe is connected to steel-making and mill.Preferably, condensate pipe is connected to the water carrier pipe of saturated vapor heating boiler and the water inlet of economizer and/or is connected to the water conveyance conduit of central cooler waste heat boiler.
Preferably, in the device of the application, described device also comprises condenser, and the steam drain of steam turbine is connected to condenser.
Preferably, the high parameter saturated vapor output channel of the high parameter saturated vapor output channel of heater for rolling steel drum, the high parameter saturated vapor output channel of steelmaking converter storage heater and sintering smoke exhaust pipe waste heat boiler is connected to the saturated vapor entrance of the overheated boiler of saturated vapor after merging.
Preferably, the steam (vapor) outlet of steelmaking converter drum is connected with the steam inlet of steelmaking converter steam accumulator by steelmaking converter drum saturated vapor pipeline.
Preferably, sinter in smoke exhaust pipe waste heat boiler and be provided with economizer, evaporimeter be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum.
The described device of the application is also provided with the first water pump, first water delivery side of pump is connected to the water inlet of the economizer of sintering smoke exhaust pipe waste heat boiler by the first water supply branch road, the outlet of economizer is connected to the first entrance of the drum of sintering smoke exhaust pipe waste heat boiler, first outlet of drum is connected with the entrance of evaporimeter, the outlet of evaporimeter is connected with the second entrance of drum, and the second outlet of drum and high parameter steam (vapor) outlet are connected to the steam inlet of the saturated vapor low temperature superheater in the overheated boiler of saturated vapor by saturated vapor pipeline; Preferably, the outlet bellows sintering smoke exhaust pipe waste heat boiler are connected with air-introduced machine; Preferably, the entrance fan housing of this sintering smoke exhaust pipe waste heat boiler connects sintering device flue gas conveyance conduit.
The described device of the application also comprises condenser, and the steam drain of steam turbine is connected to condenser; And/or, be provided with condensation water heater, low parameter evaporimeter, low parameter superheater, high parameter economizer and high parameter evaporimeter in central cooler waste heat boiler and be provided at an outer portion with central cooler waste heat boiler low parameter drum and central cooler waste heat boiler high parameter drum.
In the described device of the application, oxygen-eliminating device is also had to be connected with central cooler waste heat boiler low parameter drum, the entrance of water conveyance conduit or the condensate water carrier pipe of drawing from the delivery port of condenser or the condensation water heater that is connected to central cooler waste heat boiler, the outlet of condensation water heater is connected with the water inlet of oxygen-eliminating device, the delivery port of oxygen-eliminating device is connected with the first entrance of the low parameter drum of central cooler waste heat boiler, first outlet of low parameter drum is connected with the entrance of central cooler waste heat boiler low parameter evaporimeter, the outlet of low parameter evaporimeter is connected with the second entrance of low parameter drum, second outlet of central cooler waste heat boiler low parameter drum is connected with the entrance of low parameter superheater, the outlet of low parameter superheater is connected with the filling mouth of steam turbine by low parameter superheat steam pipeline.
In the first embodiment of the application, the conveyance conduit of central cooler flue gas is also had to be connected to the smoke inlet end of central cooler waste heat boiler in said device, be connected by the entrance of the second water supply branch road with the high parameter economizer of central cooler waste heat boiler with water delivery side of pump, the outlet of high parameter economizer is connected with the first entrance of central cooler waste heat boiler high parameter drum, first outlet of high parameter drum is connected with the entrance of central cooler waste heat boiler high parameter evaporimeter, the outlet of high parameter evaporimeter is connected with the second entrance of high parameter drum, second outlet and the high parameter steam (vapor) outlet of central cooler waste heat boiler high parameter drum are connected to the main air intake of steam turbine by saturated vapor pipeline, preferably, the outlet bellows of central cooler waste heat boiler are connected with air-introduced machine.
In the described device of the second embodiment of the application, first water delivery side of pump is connected with the entrance of the high parameter economizer of central cooler waste heat boiler by the second water supply branch road, the outlet of high parameter economizer is connected with the first entrance of central cooler waste heat boiler high parameter drum, first outlet of high parameter drum is connected with the entrance of central cooler waste heat boiler high parameter evaporimeter, the outlet of high parameter evaporimeter is connected with the second entrance of high parameter drum, second outlet of central cooler waste heat boiler high parameter drum and high parameter steam (vapor) outlet are connected to the steam inlet of the high parameter superheater of external type overheating device by saturated vapor pipeline, the steam (vapor) outlet of external superheater is connected to the primary air inlet of steam turbine by superheated steam secondary duct, preferably, the outlet bellows of central cooler waste heat boiler are connected with air-introduced machine.
Preferably, also have the conveyance conduit of central cooler high-temperature flue gas to be connected with the smoke inlet end of external type overheating device, the smoke outlet of external type overheating device is connected with the smoke inlet end of central cooler waste heat boiler by superheater flue; With, in central cooler waste heat boiler, the conveyance conduit of warm flue gas and/or low-temperature flue gas is connected to the smoke inlet end of central cooler waste heat boiler.
In the described device of the third embodiment of the application, be provided with condensation water heater, low parameter evaporimeter, low parameter superheater, high parameter economizer, high parameter evaporimeter and high parameter superheater in the central cooler waste heat boiler with built-in high parameter superheater, and be provided at an outer portion with central cooler waste heat boiler low parameter drum and central cooler waste heat boiler high parameter drum.
Preferably, the conveyance conduit of central cooler high-temperature flue gas is also had to be connected to the smoke inlet end of the central cooler waste heat boiler with built-in high parameter superheater, in central cooler waste heat boiler, the conveyance conduit of warm flue gas and/or low-temperature flue gas is connected to second smoke inlet [the latter is in the below of built-in high parameter superheater] of central cooler waste heat boiler, be connected with central cooler waste heat boiler low parameter drum with also having oxygen-eliminating device, the entrance of water conveyance conduit or the condensate water carrier pipe of drawing from the delivery port of condenser or the condensation water heater that is connected to central cooler waste heat boiler, the outlet of condensation water heater is connected with the water inlet of oxygen-eliminating device, the delivery port of oxygen-eliminating device is connected with the first entrance of the low parameter drum of central cooler waste heat boiler, first outlet of low parameter drum is connected with the entrance of central cooler waste heat boiler low parameter evaporimeter, the outlet of low parameter evaporimeter is connected with the second entrance of low parameter drum, second outlet of central cooler waste heat boiler low parameter drum is connected with the entrance of low parameter superheater, the outlet of low parameter superheater is connected with the filling mouth of steam turbine by low parameter superheat steam pipeline.
More preferably, first water delivery side of pump is connected by the entrance of the second water supply branch road with the high parameter economizer in the central cooler waste heat boiler with built-in high parameter superheater, the outlet of high parameter economizer is connected with the first entrance of central cooler waste heat boiler high parameter drum, first outlet of high parameter drum is connected with the entrance of central cooler waste heat boiler high parameter evaporimeter, the outlet of high parameter evaporimeter is connected with the second entrance of high parameter drum, second outlet and the high parameter steam (vapor) outlet of central cooler waste heat boiler high parameter drum are connected to the steam inlet of built-in high parameter superheater by saturated vapor pipeline, the steam (vapor) outlet of high parameter superheater connects the primary air inlet of steam turbine by superheated steam secondary duct, preferably, the outlet bellows of built-in superheater central cooler waste heat boiler are connected with air-introduced machine.
In the described device of the application, preferably, the rotating shaft of steam turbine connects or drives the rotating shaft of generator, and the steam drain of steam turbine is connected with condenser.Preferably, the condensate water efferent duct of condenser is connected to the condensate water carrier pipe of central cooler waste heat boiler.
Preferably, the low parameter drum of central cooler waste heat boiler has the 3rd outlet and the latter is connected to the water inlet of water pump, and the delivery port of water pump is divided into above-described two water supply branch roads i.e. the first water supply branch road and the second water supply branch road.
Preferably, the low parameter drum with the central cooler waste heat boiler of built-in superheater also has the 3rd outlet and the latter is connected to the water inlet of water pump, and the delivery port of water pump is divided into above-described two water supply branch roads i.e. the first water supply branch road and the second water supply branch road.
According to another object of the present invention, a kind of method also providing residual heat and energy to fully utilize generating or use said apparatus carry out the method generated electricity, the method comprises: by the high parameter saturated vapor output channel of heater for rolling steel drum, three strands of saturated steam flowings that the high parameter saturated vapor output channel of steelmaking converter steam accumulator and the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler are carried are undertaken overheated by the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor and are produced high parameter superheated steam after converging, by the main air intake of produced high parameter superheated steam through vapours main pipeline input steam turbine,
Wherein, the saturated steam flowing carried by the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler:
1) the saturated vapor entrance of the superheater in the overheated boiler of saturated vapor is transported to, or
2) when central cooler waste heat boiler has external type overheating device in addition, be transported to the steam inlet of the high parameter superheater of external type overheating device, and the superheated steam exported from the steam (vapor) outlet of this high parameter superheater is transported to the main air intake of steam turbine by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline or is transported to the saturated vapor entrance of the superheater in the overheated boiler of saturated vapor by superheated steam branch road, or
3) when central cooler waste heat boiler has superheater in addition, be transported to the steam inlet of the built-in high parameter superheater in central cooler waste heat boiler, and the superheated steam exported from the steam (vapor) outlet of high parameter superheater in central cooler waste heat boiler is transported to the main air intake of steam turbine by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline or is transported to the saturated vapor entrance of the superheater in the overheated boiler of saturated vapor by superheated steam branch road;
With, optionally, the low parameter superheated steam (such as via low parameter pipeline) produced by the low parameter superheater of central cooler waste heat boiler inputs the filling mouth of steam turbine, to allow Steam Turbine Driven generator generate electricity.
Therefore, according to the 4th embodiment of the present invention, a kind of method providing residual heat and energy to fully utilize generating or use said apparatus carry out the method generated electricity, the method comprises: by the high parameter saturated vapor output channel of heater for rolling steel drum, three strands of saturated steam flowings that the high parameter saturated vapor output channel of steelmaking converter storage heater and the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler are carried are undertaken overheated by the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor and are produced high parameter superheated steam after converging, by the main air intake of produced high parameter superheated steam through vapours main pipeline input steam turbine, in addition, the saturated steam flowing carried by the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler is transported to the saturated vapor entrance of the superheater in the overheated boiler of saturated vapor, with, optionally, the low parameter superheated steam (such as via low parameter pipeline) produced by the low parameter superheater of central cooler waste heat boiler inputs the filling mouth of steam turbine, to allow Steam Turbine Driven generator generate electricity.。
According to the 5th embodiment of the present invention, a kind of method providing residual heat and energy to fully utilize generating or use said apparatus carry out the method generated electricity, the method comprises: by the high parameter saturated vapor output channel of heater for rolling steel drum, three strands of saturated steam flowings that the high parameter saturated vapor output channel of steelmaking converter storage heater and the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler are carried are undertaken overheated by the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor and are produced high parameter superheated steam after converging, by the main air intake of produced high parameter superheated steam through vapours main pipeline input steam turbine,
Wherein, when central cooler waste heat boiler has external type overheating device in addition, the saturated steam flowing carried by the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler is transported to the steam inlet of the high parameter superheater of external type overheating device, and the superheated steam exported from the steam (vapor) outlet of this high parameter superheater is transported to the main air intake of steam turbine by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline or is transported to the saturated vapor entrance of the superheater in the overheated boiler of saturated vapor by superheated steam branch road;
With, optionally, the low parameter superheated steam (such as via low parameter pipeline) produced by the low parameter superheater of central cooler waste heat boiler inputs the filling mouth of steam turbine, to allow Steam Turbine Driven generator generate electricity.
According to the 6th embodiment of the present invention, a kind of method providing residual heat and energy to fully utilize generating or use said apparatus carry out the method generated electricity, the method comprises: by the high parameter saturated vapor output channel of heater for rolling steel drum, three strands of saturated steam flowings that the high parameter saturated vapor output channel of steelmaking converter storage heater and the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler are carried are undertaken overheated by the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor and are produced high parameter superheated steam after converging, by the main air intake of produced high parameter superheated steam through vapours main pipeline input steam turbine,
Wherein, when central cooler waste heat boiler has superheater in addition, the saturated steam flowing carried by the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler is transported to the steam inlet of the built-in high parameter superheater in central cooler waste heat boiler, and the superheated steam exported from the steam (vapor) outlet of high parameter superheater in central cooler waste heat boiler is transported to the main air intake of steam turbine by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline or is transported to the saturated vapor entrance of the superheater in the overheated boiler of saturated vapor by superheated steam branch road,
With, optionally, the low parameter superheated steam (such as via low parameter pipeline) produced by the low parameter superheater of central cooler waste heat boiler inputs the filling mouth of steam turbine, to allow Steam Turbine Driven generator generate electricity.
In the above-mentioned any one method of the application, preferably, the steam discharge of steam turbine enters in condenser and forms condensate water, and this condensate water returns each workshop or this condensate water and to be transferred via water conveyance conduit and successively by the condensation water heater of central cooler waste heat boiler, low parameter evaporimeter, low parameter drum, low parameter superheater and produce low parameter superheated steam and be delivered to the filling mouth of steam turbine via the low parameter superheat steam pipeline of central cooler waste heat boiler.
Preferably, the steam discharge of steam turbine enters in condenser and forms condensate water, and this condensate water returns each workshop or this condensate water and to be transferred via water conveyance conduit and successively by having the condensation water heater of the central cooler waste heat boiler of built-in high parameter superheater, low parameter evaporimeter, low parameter drum, low parameter superheater and produce low parameter superheated steam and be delivered to the filling mouth of steam turbine via the low parameter superheat steam pipeline of central cooler waste heat boiler.
Preferably, the steam discharge of steam turbine enters in condenser and forms condensate water, this condensate water returns to each workshop or this condensate water carries out deoxygenation by being transported in oxygen-eliminating device after the condensation water heater heating of central cooler waste heat boiler, from oxygen-eliminating device, discharge the water of deoxygenation and input in the low parameter drum of central cooler waste heat boiler, the water of discharging from the first outlet of low parameter drum is transported to the low parameter evaporimeter of central cooler waste heat boiler, the steam of discharging from low parameter evaporimeter returns in low parameter drum, the steam of discharging from the second outlet of low parameter drum is transfused to low parameter superheater, the low parameter superheated steam of discharging from low parameter superheater is transported to the filling mouth of steam turbine by low parameter superheat steam pipeline.
Preferably, the steam discharge of steam turbine enters in condenser and forms condensate water, this condensate water returns each workshop or this condensate water and carries out deoxygenation by being transported in oxygen-eliminating device after the condensation water heater heating with the central cooler waste heat boiler of built-in high parameter superheater, from oxygen-eliminating device, discharge the water of deoxygenation and input in the low parameter drum of central cooler waste heat boiler, the water of discharging from the first outlet of low parameter drum is transported to the low parameter evaporimeter of central cooler waste heat boiler, the steam of discharging from low parameter evaporimeter returns in low parameter drum, the steam of discharging from the second outlet of low parameter drum is transfused to low parameter superheater, the low parameter superheated steam of discharging from low parameter superheater is transported to the filling mouth of steam turbine by low parameter superheat steam pipeline.
Preferably, the water conservancy in low parameter drum with the first pump via the first water supply branch road conveying water successively by the economizer of sintering smoke exhaust pipe waste heat boiler, sintering smoke exhaust pipe afterheat boiler evaporator, sintering smoke exhaust pipe waste heat boiler drum and produce high parameter saturated vapor and be delivered to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor via the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler.
Preferably, water conservancy in low parameter drum is conducted through the economizer of sintering smoke exhaust pipe waste heat boiler via the first water supply branch road with the first pump, the water of discharging from economizer is transported in sintering smoke exhaust pipe waste heat boiler drum, the hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum is further by sintering smoke exhaust pipe afterheat boiler evaporator, the high parameter steam of discharging from evaporimeter returns in sintering smoke exhaust pipe waste heat boiler drum again, the high parameter steam of discharging from drum is transported to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor via the high parameter saturated vapor output channel sintering smoke exhaust pipe waste heat boiler.
Preferably, water conservancy in low parameter drum to be transferred via the second water supply branch road with the first pump and to produce high parameter saturated vapor by the high parameter economizer of central cooler waste heat boiler, high parameter evaporimeter, high parameter drum successively, and is delivered to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor via the high parameter saturated vapor output channel of central cooler waste heat boiler.
Preferably, water conservancy in low parameter drum the first pump is transferred successively by the high parameter economizer of central cooler waste heat boiler via the second water supply branch road, high parameter evaporimeter, high parameter drum produces high parameter saturated vapor, and the steam inlet of the high parameter superheater of external type overheating device was delivered to via the high parameter saturated vapor output channel of central cooler waste heat boiler, heat further through external type overheating device, superheated steam through heating is further delivered to the primary air inlet of steam turbine through vapours secondary duct or is delivered to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor through vapours branch road.
Preferably, water conservancy in low parameter drum the first pump is transferred successively by having the high parameter economizer of the central cooler waste heat boiler of built-in superheater via the second water supply branch road, high parameter evaporimeter, high parameter drum produces high parameter saturated vapor, and the entrance of superheater is delivered to via the high parameter saturated vapor output channel of central cooler waste heat boiler, heat further through built-in superheater, superheated steam through heating is further delivered to the primary air inlet of steam turbine through vapours secondary duct or is delivered to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor through vapours branch road.
In the method for the 4th embodiment, preferably, water conservancy in low parameter drum the first pump is transferred high parameter economizer by central cooler waste heat boiler via the second water supply branch road, the water of discharging from high parameter economizer is via in the first entrance input high parameter drum of high parameter drum, the hot water of discharging from the first outlet of high parameter drum is also again returned in high parameter drum by the heating of high parameter evaporimeter and produces high parameter saturated vapor, then the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor is delivered to via the high parameter saturated vapor output channel of central cooler waste heat boiler.
In the method for the 5th embodiment, preferably, water conservancy in low parameter drum is transferred the high parameter economizer of the central cooler waste heat boiler by having external type overheating device via the second water supply branch road with the first pump, the water of discharging from high parameter economizer is via in the first entrance input high parameter drum of high parameter drum, the hot water of discharging from the first outlet of high parameter drum is also again returned in high parameter drum by the heating of high parameter evaporimeter and produces high parameter saturated vapor, then the steam inlet of the high parameter superheater of external type overheating device was delivered to via the high parameter saturated vapor output channel of central cooler waste heat boiler, heat through high parameter superheater, the superheated steam exported from the steam (vapor) outlet of high parameter superheater is delivered to the main air intake of steam turbine through vapours secondary duct further or is delivered to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor further through vapours branch road.
In the method for the 6th embodiment, preferably, water conservancy in low parameter drum is transferred the high parameter economizer of the central cooler waste heat boiler by having built-in high parameter superheater via the second water supply branch road with the first pump, the water of discharging from high parameter economizer is via in the first entrance input high parameter drum of high parameter drum, the hot water of discharging from the first outlet of high parameter drum is also again returned in high parameter drum by the heating of high parameter evaporimeter and produces high parameter saturated vapor, then the high parameter saturated vapor of discharging in high parameter drum is delivered to the entrance of built-in high parameter superheater via the high parameter saturated vapor output channel of central cooler waste heat boiler, through built-in high parameter superheater heating, the superheated steam of discharging from the outlet of high parameter superheater is delivered to the main air intake of steam turbine through vapours secondary duct or is delivered to the saturated vapor entrance of the superheater (such as saturated vapor low temperature superheater and saturated vapor high temperature superheater) in the overheated boiler of saturated vapor through vapours branch road.
In the method for the 4th embodiment, preferably, central cooler flue gas (such as from the high-temperature region of central cooler or the flue gas of middle warm area) is delivered to the smoke inlet end of central cooler waste heat boiler via conveyance conduit, then successively be arranged on the high parameter evaporimeter of this central cooler waste heat boiler inside, high parameter economizer, low parameter superheater, low parameter evaporimeter and condensation water heater (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet of central cooler waste heat boiler.
In the method for the 5th embodiment, preferably, be delivered to the smoke inlet of external type overheating device via conveyance conduit from the high-temperature flue gas of central cooler high-temperature region, the flue gas that external type overheating device is discharged and be transported to the smoke inlet end of central cooler waste heat boiler and form mixed flue gas via external superheater smoke discharging pipe and middle temperature flue gas and/or low-temperature flue gas conveyance conduit from flue gas warm in warm area in central cooler and/or low-temperature space and/or low-temperature flue gas respectively, this mixed flue gas successively with the high parameter evaporimeter being arranged on this central cooler waste heat boiler inside, high parameter economizer, low parameter superheater, low parameter evaporimeter and condensation water heater (central flow through water or steam) carry out indirect heat exchange, finally discharge from the smoke outlet of central cooler waste heat boiler.
In the method for the 6th embodiment, preferably, the smoke inlet end of central cooler waste heat boiler is delivered to via conveyance conduit from the central cooler high-temperature flue gas of central cooler high-temperature region, the high parameter superheater of this flue gas in central cooler waste heat boiler; In central cooler, warm flue gas and/or low-temperature flue gas are delivered to the second smoke inlet of central cooler waste heat boiler via conveyance conduit and mix with the high-temperature flue gas after have passed through high parameter superheater, this mixed flue gas successively be arranged on the high parameter evaporimeter of this central cooler waste heat boiler inside, high parameter economizer, low parameter superheater, low parameter evaporimeter and condensation water heater (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet of central cooler waste heat boiler.
In above-mentioned any one method, preferably, sintering device flue gas delivers in the entrance fan housing of sintering smoke exhaust pipe waste heat boiler via sintering device flue gas conveyance conduit and also carries out indirect heat exchange with the evaporimeter in sintering smoke exhaust pipe waste heat boiler and economizer (central flow through water or steam) successively, then discharges from the port of export of sintering smoke exhaust pipe waste heat boiler.
Preferably, the burner of the burner of coal gas in saturated vapor heating boiler enters the combustion chamber combustion of saturated vapor heating boiler burner and produces high-temperature flue gas, flue gas is upwards successively through supersaturated vapor heating boiler saturated vapor low temperature superheater, saturated vapor heating boiler saturated vapor high temperature superheater, again successively through supersaturated vapor heating boiler evaporimeter, saturated vapor heating boiler economizer, extract out finally by air-introduced machine.
Preferably, steelmaking converter drum produces the saturated vapor of interruption and is transported in storage heater via steelmaking converter drum saturated vapor pipeline.
Preferably, the steam of discharging from the steam drain of steam turbine enters condenser and forms condensate water; Preferably, the condensate water formed is transported to steel-making and mill or is transported to the water inlet of economizer of saturated vapor heating boiler, as a part for external feedwater or external feedwater.In addition, the condensate water that the water of the external feedwater carrier pipe of central cooler waste heat boiler and the water carrier pipe of the overheated boiler of saturated vapor can select the condenser in TRT to produce, also can replace with demineralized water or supplement.
Preferably, in heater for rolling steel drum saturated vapor pipeline, in storage heater saturated vapor pipeline, in the high parameter saturated vapor output channel of sintering smoke exhaust pipe waste heat boiler, in the saturated vapor pipeline of the outside drum (803) of saturated vapor heating boiler or have built-in superheater central cooler waste heat boiler (6a) or have external superheater central cooler waste heat boiler (6) high parameter saturated vapor output channel (L9) in the temperature of each saturated steam flowing be 150-250 DEG C, preferred 160-240 DEG C independently of one another.
The temperature of saturated vapor heating boiler saturated vapor low temperature superheater exit steam is 250-350 DEG C, preferred 260-340 DEG C.
The temperature of saturated vapor heating boiler saturated vapor high temperature superheater exit superheated steam is 360-450 DEG C, and preferred 370-440 DEG C, more selects 380-420 DEG C.
Preferably, the pressure of the superheated steam of the high temperature superheater of saturated vapor heating boiler or built-in high parameter superheater or the generation of external superheater is >=0.60MPa, preferably >=0.7MPa, such as pressure is 0.6MPa-2.5MPa, preferred 0.8MPa-2.0MPa, more preferably 1.0MPa-1.8MPa, or its temperature be >=350 DEG C, preferably >=360 DEG C, such as its temperature is 370 DEG C-460 DEG C, preferably 380-450 DEG C, more preferably 390 DEG C-430 DEG C.
Generally, the pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater produces is 0.3MPa to 0.6MPa, preferred 0.3MPa to 0.5MPa, or its temperature is 160 DEG C-300 DEG C, preferably 170 DEG C-280 DEG C.
Sinter the flue gas that smoke exhaust pipe waste heat boiler is extracted out by air-introduced machine in the present invention, sintering device flue gas pipeline can be returned again, discharge after also caning be passed through process.
The flue gas that in the present invention, central cooler waste heat boiler is extracted out by air-introduced machine, can return central cooler flue again, discharges after also caning be passed through process.
The actual pressure situation of the saturated vapor that the saturated vapor that the present invention can produce according to sintering smoke exhaust pipe waste heat boiler, central cooler waste heat boiler produce, regulate the inflow of sintering smoke exhaust pipe waste heat boiler, sintering smoke exhaust pipe Economizer of Heat Recovery Boiler and sintering smoke exhaust pipe afterheat boiler evaporator working condition, regulate sintering smoke exhaust pipe waste heat boiler to produce the pressure and temperature of saturated vapor.Also can the working condition of the inflow of adjustable ring cold waste heat boiler, central cooler Economizer of Heat Recovery Boiler and central cooler waste heat boiler high parameter evaporimeter, adjustable ring cold waste heat boiler produces the pressure and temperature of saturated vapor.In heater for rolling steel drum saturated vapor pipeline, the pressure of steam can control by regulating heater for rolling steel drum control valve group, regulates storage heater control valve group to control the pressure of steam in storage heater saturated vapor pipeline.Make the pressure match of each several part steam, each stock steam, after merging, accesses overheated afterburning stove as far as possible.
The unaccounted device of the present invention and equipment are common device and the device of this area.In this application, " optionally " expression is carried out or is not carried out." optional " expression is with or without.
Compared to prior art, Advantageous Effects of the present invention:
1, the present invention takes full advantage of the residual gas of steel-making waste heat, steel rolling waste heat, sintering waste heat, central cooler waste heat and iron and steel enterprise, effectively reduces energy consumption.Especially, in device of the present invention, Temperature Matching is very reasonable, and capacity usage ratio is high.
2, the present invention to a generating set, will save floor space and cost of investment by residual heat and energy resource aggregation everywhere, decrease operations staff, also save operating cost.
3, present system flexible operation, the disconnected of any one residual heat resources is stopped, and generating set all can not be caused to shut down, and generating set outage rate is low, and after another saturated vapor is overheated, parameter improves, thus turbine efficiency and life-span are all got a promotion.
4, the present invention produces high parameter saturated vapor (or cryogenic overheating steam) and low parameter superheated steam respectively because of waste heat boiler, reduces the requirement to flue-gas temperature, improves the utilization rate of sintering waste heat; When sintering and getting wind fluctuation of operating conditions, outlet vapor parameter stability, can ensure the stable operation of steam turbine.
5, the approach temperature point because of flue gas and steam in the present invention is large, can reduce heating surface area, reduces equipment cost, reduces investment.
6, in the present invention, overheated afterburning stove is gas boiler, and technology maturation is reliable, and the stability of a system is good.
Accompanying drawing explanation
Fig. 1 is the structure drawing of device of the first scheme of the present invention.
Fig. 2 is the structure drawing of device of first scheme of the present invention.
Fig. 3 is the structure drawing of device of the third scheme of the present invention.
Fig. 4 is generator of the present invention, steam turbine, condenser, condensate pump partial enlarged drawing.
Fig. 5 is generator of the present invention, steam turbine, condenser, condensate pump another kind design partial enlarged drawing.
Fig. 6 is the structure chart of heater for rolling steel steamdrum of the present invention and steelmaking converter steamdrum and storage heater.
Fig. 7 is the structural representation of the overheated boiler of saturated vapor of the present invention.
Fig. 8 is the partial enlarged drawing of the burner of the overheated boiler of saturated vapor of the present invention.
Fig. 9 is the partial enlarged drawing of the overheated boiler-steam dome of saturated vapor of the present invention.
Figure 10 is the overheated boiler plant schematic layout pattern of saturated vapor of the present invention.
Figure 11 is that the present invention sinters smoke exhaust pipe waste heat boiler partial enlarged drawing.
Figure 12 is the schematic diagram of the central cooler waste heat boiler of the first scheme of the present invention.
Figure 13 is the schematic diagram of the central cooler waste heat boiler of first scheme of the present invention.
Figure 14 is the design diagram of the central cooler waste heat boiler of the third scheme of the present invention.
Figure 15 is the another kind of design diagram of the central cooler waste heat boiler of the third scheme of the present invention.
Figure 16 is central cooler waste heat boiler of the present invention and central cooler connection diagram.
Reference numeral: 1, generator; 101, alternator shaft; 2, steam turbine; 201, steamer owner air intake; 202, rotating shaft of steam turbine; 203, turbine discharge mouth; 204, steam turbine filling mouth; 3, heater for rolling steel drum; 301, heater for rolling steel drum entrance; 302, heater for rolling steel drum outlet; 303, heater for rolling steel drum control valve; 4, steelmaking converter storage heater; 401, accumulator inlet; 402, accumulator outlet; 403, storage heater saturated vapor pipeline check-valves; 404, storage heater control valve group; 5, smoke exhaust pipe waste heat pot is sintered; 501, smoke exhaust pipe Economizer of Heat Recovery Boiler is sintered; 50101, the water inlet of smoke exhaust pipe Economizer of Heat Recovery Boiler is sintered; 50102, the water out of smoke exhaust pipe Economizer of Heat Recovery Boiler is sintered; 502, smoke exhaust pipe afterheat boiler evaporator is sintered; 50201, the water inlet of smoke exhaust pipe afterheat boiler evaporator is sintered; 50202, the steam (vapor) outlet of smoke exhaust pipe afterheat boiler evaporator is sintered; 503, smoke exhaust pipe waste heat boiler drum is sintered; 50301, first entrance (water inlet) of smoke exhaust pipe waste heat boiler drum is sintered; 50302, the first outlet (delivery port) of smoke exhaust pipe waste heat boiler drum is sintered; 50303, second entrance (water inlet) of smoke exhaust pipe waste heat boiler drum is sintered; 50304, the second outlet (steam (vapor) outlet) of smoke exhaust pipe waste heat boiler drum is sintered; 504, smoke exhaust pipe exhaust-heat boiler inlet fan housing is sintered; 505, smoke exhaust pipe heat boiler outlet bellows are sintered; 506, sintering device flue gas; 6, central cooler waste heat boiler; 6a, there is the central cooler waste heat boiler of built-in superheater; 601, central cooler waste heat boiler condensation water heater; 60101, central cooler waste heat boiler condensation water heater entrance; 60102, central cooler waste heat boiler condensation water heater outlet; 602, central cooler waste heat boiler low parameter evaporimeter; 60201, central cooler waste heat boiler low parameter evaporator inlet; 60202, central cooler waste heat boiler low parameter evaporator outlet; 603, central cooler waste heat boiler low parameter drum; 60301, central cooler waste heat boiler low parameter drum first entrance; 60302, central cooler waste heat boiler low parameter drum first exports; 60303, central cooler waste heat boiler low parameter drum second entrance; 60304, central cooler waste heat boiler low parameter drum second exports; 60305, central cooler waste heat boiler low parameter drum the 3rd exports; 604, central cooler waste heat boiler low parameter superheater; 60401, central cooler waste heat boiler low parameter superheater entrance; 60402, central cooler waste heat boiler low parameter superheater outlet; 605, central cooler waste heat boiler high parameter economizer; 60501, central cooler waste heat boiler high parameter economizer entrance; 60502, central cooler waste heat boiler high parameter economizer exit; 606, central cooler waste heat boiler high parameter evaporimeter; 60601, central cooler waste heat boiler high parameter evaporator inlet; 60602, central cooler waste heat boiler high parameter evaporator outlet; 607, central cooler waste heat boiler high parameter drum; 60701, central cooler waste heat boiler high parameter drum first entrance; 60702, central cooler waste heat boiler high parameter drum first exports; 60703, central cooler waste heat boiler high parameter drum second entrance; 60704, central cooler waste heat boiler high parameter drum second exports; 608, central cooler heat boiler outlet bellows; 609, central cooler exhaust-heat boiler flue gas entrance fan housing; 609a, central cooler waste heat boiler second smoke inlet; 610, central cooler waste heat boiler high parameter superheater; 61001, central cooler waste-heat boiler superheater entrance; 61002, central cooler waste-heat boiler superheater outlet; 612, central cooler high temperature or middle temperature flue gas; 612a, central cooler high-temperature flue gas; Temperature or low-temperature flue gas in 612b, central cooler; 7, the first water pump; 701, the first water supply branch road; 702, the second water supply branch road; 8, the overheated boiler of saturated vapor; 801, the overheated boiler combustion device of saturated vapor; 80101, saturated vapor overheat pan burner; 80102, the overheated boiler setting of saturated vapor; 80103, the overheated boiler furnace of saturated vapor; 80104, the overheated boiler anti-riot door of saturated vapor; 80105, the overheated boiler flame-observing hole of saturated vapor; 80106, the overheated boiler wind-supplying mouth of saturated vapor; 802, the overheated boiler desuperheater of saturated vapor; 803, the overheated boiler-steam dome of saturated vapor; 80301, saturated vapor overheated boiler-steam dome first entrance; 80302, the overheated boiler-steam dome of saturated vapor first exports; 80303, saturated vapor overheated boiler-steam dome second entrance; 80304, the overheated boiler-steam dome of saturated vapor second exports; 804, the overheated boiler evaporator of saturated vapor; 80401, the overheated boiler evaporator inlet of saturated vapor; 80402, the overheated boiler evaporator outlet of saturated vapor; 805, the overheated boiler economizer of saturated vapor; 80501, the overheated boiler economizer entrance of saturated vapor; 80502, the overheated boiler economizer exit of saturated vapor; 806, saturated vapor overheated boiler saturated vapor low temperature superheater, 80601, saturated vapor overheated boiler saturated vapor low temperature superheater entrance; 80602, saturated vapor overheated boiler saturated vapor low temperature superheater outlet; 807, saturated vapor overheated boiler saturated vapor high temperature superheater; 80701, saturated vapor overheated boiler saturated vapor high temperature superheater entrance; 80702, saturated vapor overheated boiler saturated vapor high temperature superheater outlet; 808, saturated vapor overheat pan outlet of still bellows; 9, steelmaking converter drum; 901, steelmaking converter drum entrance; 902, steelmaking converter drum outlet; 903, steelmaking converter drum control valve group; 904, steelmaking converter drum saturated vapor pipeline check-valves; 10, water carrier pipe; 1001, water inlet pipe; 11, air blast; 1101, air blast airduct; 12, air-introduced machine; 1201, air-introduced machine airduct; 13, desuperheating water; 1301, desuperheat water pipe; 14, coal gas; 1401, gas piping; 1402, gas regulator; 15, condenser; 1501, condenser entrance; 1502, condenser outlet; 16, condensate pump (the second water pump); 1601, condensate pump entrance; 1602, condensate pump outlet; 1603, condensate water carrier pipe; 17, external type overheating device; 1701, the high parameter superheater of external type overheating device; 170101, superheater entrance; 170102, superheater outlet; 18, water carrier pipe or condensate water carrier pipe; 19, oxygen-eliminating device; 20, central cooler.
L1, L1a: superheated steam main pipeline; L1b: superheated steam secondary duct; L1c: superheated steam branch road; L2, heater for rolling steel drum saturated vapor pipeline; L3, steelmaking converter storage heater saturated vapor pipeline; L4, sintering smoke exhaust pipe waste heat boiler saturated vapor pipeline; The saturated vapor pipeline that L5, saturated vapor heating boiler drum (803) are drawn; The hot water delivery pipe road of L6, saturated vapor heating boiler economizer (805); The output channel of L7, saturated vapor heating boiler drum (803); The output channel of L8, Steam Heating boiler evaporimeter (804); The saturated vapor output channel of L9, central cooler waste heat boiler high parameter drum (607); The low parameter superheat steam pipeline L10 of L10, central cooler waste heat boiler (6); L11, steelmaking converter drum saturated vapor pipeline; The conveyance conduit of L12, central cooler high temperature/middle temperature flue gas (612); The pipeline of L12a, central cooler high-temperature flue gas (612a); The pipeline of temperature and/or low-temperature flue gas (612b) in L12b, central cooler; The superheater flue of L13, external type overheating device (17).
Detailed description of the invention
In general, here a kind of residual heat and energy is provided to fully utilize TRT, this device comprises: generator 1, for driving the steam turbine 2 of generator 1, heater for rolling steel drum 3, steelmaking converter steam accumulator 4, sintering smoke exhaust pipe waste heat boiler 5, central cooler waste heat boiler 6 and having the overheated boiler 8 of saturated vapor of superheater such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807
Wherein, the high parameter saturated vapor output channel L4 of the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4, sintering smoke exhaust pipe waste heat boiler 5 is connected to the saturated vapor entrance 80601 of the superheater in the overheated boiler 8 of saturated vapor respectively, the superheated steam outlet 80702 of the overheated boiler of saturated vapor 8 is connected to the main air intake 201 of steam turbine 2 through vapours main pipeline L1, and central cooler waste heat boiler 6 has central cooler waste heat boiler high parameter drum 607
Wherein, from the high parameter saturated vapor output channel L9 that the high parameter drum 607 of central cooler waste heat boiler 6 is drawn:
1) the saturated vapor entrance 80601 of the superheater 806 in the overheated boiler 8 of saturated vapor is connected to, or
2) when central cooler waste heat boiler 6 has external type overheating device 17 in addition, be connected to the steam inlet 170101 of the high parameter superheater 1701 of external type overheating device 17, and the steam (vapor) outlet 170102 of this high parameter superheater 1701 is connected to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b and/or is connected to the saturated vapor entrance 80601 of the superheater in the overheated boiler 8 of saturated vapor by superheated steam branch road L1c, or
3) when central cooler waste heat boiler 6 has superheater 610 (now also referred to as central cooler waste heat boiler 6a) in addition, be connected to the steam inlet 61001 of the built-in high parameter superheater 610 in central cooler waste heat boiler 6 (also referred to as 6a), and the steam (vapor) outlet 61002 of high parameter superheater 610 is connected to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b and/or is connected to the saturated vapor entrance 80601 of the superheater in the overheated boiler 8 of saturated vapor by superheated steam branch road L1c in central cooler waste heat boiler, with
Wherein, the rotating shaft 202 of steam turbine 2 connects or drives the rotating shaft of generator 1, and optionally, the low parameter superheated steam outlet 60402 of central cooler waste heat boiler 6 is connected to the filling mouth 204 of steam turbine.
In first detailed description of the invention of the application, a kind of residual heat and energy is provided to fully utilize TRT, this device comprises: generator 1, for driving the steam turbine 2 of generator 1, heater for rolling steel drum 3, steelmaking converter steam accumulator 4, sintering smoke exhaust pipe waste heat boiler 5, central cooler waste heat boiler 6 and the overheated boiler 8 of saturated vapor with superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807), the wherein high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4, the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 is connected to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor respectively, the superheated steam outlet 80702 of the overheated boiler of saturated vapor 8 is connected to the main air intake 201 of steam turbine 2 through vapours main pipeline L1, central cooler waste heat boiler 6 has central cooler waste heat boiler high parameter drum 607, and the high parameter saturated vapor output channel L9 drawn from the high parameter drum 607 of central cooler waste heat boiler 6 is also connected to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor, the rotating shaft 202 of steam turbine 2 connects or drives the rotating shaft of generator 1, and optionally, low parameter superheated steam outlet 60402 (such as via low parameter jet chimney L10) of central cooler waste heat boiler 6 are connected to the filling mouth 204 of steam turbine.
In second detailed description of the invention of the application, a kind of residual heat and energy is provided to fully utilize TRT, this device comprises: generator 1, for driving the steam turbine 2 of generator 1, heater for rolling steel drum 3, steelmaking converter steam accumulator 4, sintering smoke exhaust pipe waste heat boiler 5, central cooler waste heat boiler 6, external type overheating device 17 set near central cooler waste heat boiler 6 and there is the overheated boiler 8 of saturated vapor of superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807), wherein: the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter the storage heater 4 and high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 is connected to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor respectively, the superheated steam outlet 80702 of the overheated boiler of saturated vapor 8 is connected to the main air intake 201 of steam turbine 2 through vapours main pipeline L1a, central cooler waste heat boiler 6 has central cooler waste heat boiler high parameter drum 607, the high parameter saturated vapor output channel L9 drawn from the high parameter drum 607 of central cooler waste heat boiler 6 is connected to the steam inlet 170101 of the high parameter superheater 1701 of external type overheating device 17, and the steam (vapor) outlet 170102 of this high parameter superheater 1701 is connected to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b, the rotating shaft 202 of steam turbine 2 connects or drives the rotating shaft of generator 1, and, optionally, low parameter superheated steam outlet 60402 (such as via low parameter pipeline L10) of central cooler waste heat boiler 6 are connected to the filling mouth 204 of steam turbine, with, optionally, separate from superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b the saturated vapor entrance 80601 that a superheated steam branch road L1c is connected to the overheated boiler 8 of saturated vapor.
In addition, in the 3rd detailed description of the invention of the application, a kind of residual heat and energy is provided to fully utilize TRT, this device comprises: generator 1, for driving the steam turbine 2 of generator 1, heater for rolling steel drum 3, steelmaking converter steam accumulator 4, sintering smoke exhaust pipe waste heat boiler 5, there is the central cooler waste heat boiler 6a of built-in high parameter superheater 610 and there is the overheated boiler 8 of saturated vapor of superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807), wherein: the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter the storage heater 4 and high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 is connected to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor respectively, the superheated steam outlet 80702 of the overheated boiler of saturated vapor 8 is connected to the main air intake 201 of steam turbine 2 through vapours main pipeline L1a, central cooler waste heat boiler 6a has central cooler waste heat boiler high parameter drum 607, the high parameter saturated vapor output channel L9 drawn from the high parameter drum 607 of central cooler waste heat boiler 6a is connected to the steam inlet 61001 of the high parameter superheater 610 in central cooler waste heat boiler 6a, and in central cooler waste heat boiler, the steam (vapor) outlet 61002 of high parameter superheater 610 is connected to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b, the rotating shaft 202 of steam turbine 2 connects or drives the rotating shaft of generator 1, and, optionally, low parameter superheated steam outlet 60402 (such as via low parameter pipeline L10) of central cooler waste heat boiler 6 are connected to the filling mouth 204 of steam turbine, with, optionally, separate from superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b the saturated vapor entrance 80601 that a superheated steam branch road L1c is connected to the overheated boiler 8 of saturated vapor.
Preferably, the first valve V1 is set on L1b pipeline after the branch point that L1b and L1c intersects, the second valve V2 is set on L1c pipeline simultaneously.Or switch valve is set at the branch point place that L1b and L1c intersects.When the flue-gas temperature of the high-temperature region from central cooler higher (such as higher than 360 DEG C), open the first valve V1 and close the second valve V2 or open by switch valve passage and the closedown L2c that L1b back segment flows to the main air intake of steam turbine.And when the flue-gas temperature of the high-temperature region from central cooler is on the low side, timely closedown first valve V1 also opens the second valve V2 or opens L1c by switch valve in time and cut off the passage that L1b back segment flows to the main air intake of steam turbine, the even running of maintenance system, guarantees that high efficiency generates electricity.
In above-mentioned three kinds of detailed description of the invention of the application, wherein saturated vapor heating boiler 8 has the configuration of " π " shape or " П " shape, wherein the side of " π " shape or " П " shape or right side set gradually saturated vapor heating boiler burner 801 from top to bottom, the saturated vapor low temperature superheater 806 of saturated vapor heating boiler, the saturated vapor high temperature superheater 807 of saturated vapor heating boiler, and the opposite side of " π " shape or " П " shape or left side set gradually the evaporimeter 804 of saturated vapor heating boiler and the economizer 805 of saturated vapor heating boiler from top to bottom, and the top platform of " π " shape or " П " shape is the passage of combustion product gases, the left and right sides is by the combustion product gases channel connection in top platform portion.
Preferably, saturated vapor heating boiler drum 803 is also provided with in saturated vapor heating boiler 8 outside, from the saturated vapor pipeline L5 that this saturated vapor heating boiler drum 803 is drawn, the i.e. saturated vapor pipeline L5 of the overheated boiler 8 of saturated vapor, is also connected to the steam inlet 80601 of the saturated vapor low temperature superheater 806 being positioned at the overheated boiler 8 of saturated vapor.
Preferably, the hot water outlet 80502 of saturated vapor heating boiler economizer 805 is connected to the first entrance 80301 of saturated vapor heating boiler drum 803 by pipeline L6, first outlet 80302 of saturated vapor heating boiler drum 803 is connected to the entrance 80401 of saturated vapor heating boiler evaporimeter 804 by pipeline L7, the outlet 80402 of saturated vapor heating boiler evaporimeter 804 is connected to the second entrance 80303 of saturated vapor heating boiler drum 803 by pipeline L8, from the saturated vapor pipeline L5 that the second outlet 80304 of saturated vapor heating boiler drum 803 is drawn, the i.e. saturated vapor pipeline L5 of the overheated boiler 8 of saturated vapor, also the entrance 80601 of the saturated vapor low temperature superheater 806 being positioned at the overheated boiler 8 of saturated vapor is connected to.
Preferably, saturated vapor heating boiler 8 also comprises: the saturated vapor heating boiler outlet bellows or the fan housing 808 that are positioned at the cigarette airflow downstream of the economizer 805 of saturated vapor heating boiler 8, outlet bellows or the fan housing 808 of saturated vapor heating boiler 8 are connected with air-introduced machine 12, and/or, the saturated vapor heating boiler attemperator 802 between saturated vapor heating boiler saturated vapor low temperature superheater 806 and saturated vapor heating boiler saturated vapor high temperature superheater 807.
Preferably, saturated vapor heating boiler burner 801 comprises saturated vapor heating boiler burner 80101, saturated vapor heating boiler furnace wall 80102, saturated vapor heating boiler combustion chamber 80103; Preferably, saturated vapor heating boiler combustion chamber 80103 is surrounded by saturated vapor heating boiler furnace wall 80102, it is further preferred that saturated vapor heating boiler furnace wall 80102 adopts fire-resistant heat insulating material.
Preferably, saturated vapor heating boiler burner 80101 is arranged on saturated vapor heating boiler furnace wall 80102; In addition, optionally, saturated vapor heating boiler furnace wall is also provided with saturated vapor heating boiler explosion proof door 80104, saturated vapor heating boiler flame-observing hole 80105 and saturated vapor heating boiler wind-supplying mouth 80106.
Preferably, saturated vapor heating boiler attemperator 802 is positioned at the external world of saturated vapor heating boiler, and the two-port of saturated vapor heating boiler attemperator 802 is connected to the steam (vapor) outlet 80602 of saturated vapor heating boiler saturated vapor low temperature superheater 806 and the steam inlet 80701 of saturated vapor heating boiler saturated vapor high temperature superheater 807 via two pipelines respectively; Preferably, the air-introduced machine 12 of auxiliary equipment is provided as in the cigarette airflow downstream of economizer 805.
Preferably, air-introduced machine 12 is connected by the outlet bellows of air-introduced machine airduct 1201 and saturated vapor heating boiler 8 or fan housing 808, and/or, there is water pipe 10 to be connected with the water inlet 80501 of saturated vapor heating boiler economizer 805.
Preferably, the gas inlet of the burner 80101 of saturated vapor heating boiler 8 is connected with the airduct 1101 of gas piping 1401 and air blast 11 respectively with air inlet.
Preferably, gas piping 14 is provided with gas regulator 1402.The coal gas 14 that gas piping 1401 is carried is steel plant's residual gas.
Preferably, the heater for rolling steel drum saturated vapor pipeline L2 drawn from the steam (vapor) outlet 303 of heater for rolling steel drum 3 is being connected to the steam inlet 80601 of the saturated vapor low temperature superheater 806 of saturated vapor heating boiler 8 further with steel-making storage heater saturated vapor pipeline L3, the saturated vapor pipeline L5 of high parameter saturated vapor output channel L4 and saturated vapor heating boiler 8 that sinters smoke exhaust pipe waste heat boiler 5 after converging.
Preferably, the heater for rolling steel drum saturated vapor pipeline L2 drawn from the steam (vapor) outlet 303 of heater for rolling steel drum 3, steel-making storage heater saturated vapor pipeline L3, the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe the waste heat boiler 5 and saturated vapor pipeline L5 of saturated vapor heating boiler 8 are connected to the steam inlet 80601 of the saturated vapor low temperature superheater 806 of saturated vapor heating boiler 8 respectively.
Preferably, heater for rolling steel drum saturated vapor pipeline L2 is provided with heater for rolling steel steam pressure control valve 501.
Preferably, the steam (vapor) outlet 902 of steelmaking converter drum 9 is connected with the steam inlet 401 of storage heater 4 by steelmaking converter drum saturated vapor pipeline L11.
Preferably, steelmaking converter drum saturated vapor pipeline L11 is provided with steelmaking converter steam pressure control valve group 903 and/or check-valves 904.
Preferably, storage heater saturated vapor pipeline L3 is provided with check-valves 403, and/or storage heater saturated vapor pipeline L3 is provided with storage heater steam pressure control valve group 404.
Preferably, the steam drain 203 of steam turbine 2 is connected to the steam inlet 1501 of condenser 15, and/or the condensate water outlet 1502 of condenser 15 is connected with the entrance 1601 of condensate pump 16, and condensate pump outlet 1602 is connected with condensate pipe 1603.
Preferably, condensate pipe 1603 is connected to steel-making and mill.Preferably, condensate pipe 1603 is connected to the water carrier pipe 10 i.e. water inlet 80501 of economizer 805 of saturated vapor heating boiler 8 and/or is connected to the water conveyance conduit 18 of central cooler waste heat boiler 6.
Preferably, in the device of the application, described device also comprises condenser 15, and the steam drain 203 of steam turbine is connected to condenser 15.
Preferably, the high parameter saturated vapor output channel L4 of the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4 and sintering smoke exhaust pipe waste heat boiler 5 is connected to the saturated vapor entrance 80601 of the overheated boiler 8 of saturated vapor after merging.
Preferably, the steam (vapor) outlet 902 of steelmaking converter drum 9 is connected with the steam inlet 401 of steelmaking converter steam accumulator 4 by steelmaking converter drum saturated vapor pipeline L11.
Preferably, sinter in smoke exhaust pipe waste heat boiler 5 and be provided with economizer 501, evaporimeter 502 be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum 503.
The described device of the application is also provided with the first water pump 7, the outlet of the first water pump 7 is connected to the water inlet 50101 of the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 by the first water supply branch road 701, the outlet 50102 of economizer 501 is connected to the first entrance 50301 of the drum 503 of sintering smoke exhaust pipe waste heat boiler 5, first outlet 50302 of drum 503 is connected with the entrance 50201 of evaporimeter 502, the outlet 50202 of evaporimeter 502 is connected with the second entrance 50303 of drum 503, second outlet of drum 503 and high parameter steam (vapor) outlet 50304 are connected to the steam inlet 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor by saturated vapor pipeline L4, preferably, the outlet bellows 505 sintering smoke exhaust pipe waste heat boiler 5 are connected with air-introduced machine 12, preferably, the entrance fan housing 504 of this sintering smoke exhaust pipe waste heat boiler 5 connects sintering device flue gas conveyance conduit 506.
The described device of the application also comprises condenser 15, and the steam drain 203 of steam turbine is connected to condenser 15; And/or, be provided with condensation water heater 601, low parameter evaporimeter 602, low parameter superheater 604, high parameter economizer 605 and high parameter evaporimeter 606 in central cooler waste heat boiler 6 and be provided at an outer portion with central cooler waste heat boiler low parameter drum 603 and central cooler waste heat boiler high parameter drum 607.
In the described device of the application, oxygen-eliminating device 19 is also had to be connected with central cooler waste heat boiler low parameter drum 603, water conveyance conduit 18 or be connected to the entrance 60101 of the condensation water heater 601 of central cooler waste heat boiler 6 from the condensate water carrier pipe 1603 or 18 that the delivery port of condenser 3 is drawn, the outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 19, the delivery port of oxygen-eliminating device 19 is connected with the first entrance 60301 of the low parameter drum 603 of central cooler waste heat boiler 6, first outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602, the outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603, second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 204 of steam turbine 2 by low parameter superheat steam pipeline L10.
In the described device of the application, the conveyance conduit L12 of central cooler flue gas 612 is also had to be connected to the smoke inlet end 609 of central cooler waste heat boiler 6, be connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 of central cooler waste heat boiler 6 with the outlet of water pump 7, the outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607, first outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, second outlet and the high parameter steam (vapor) outlet 60704 of central cooler waste heat boiler high parameter drum 607 are connected to the main air intake 201 of steam turbine 2 by saturated vapor pipeline L9, preferably, the outlet bellows 608 of central cooler waste heat boiler 6 are connected with air-introduced machine 14.
In the described device of the application, the outlet of the first water pump 7 is connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 of central cooler waste heat boiler 6, the outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607, first outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, second outlet of central cooler waste heat boiler high parameter drum 607 and high parameter steam (vapor) outlet 60704 are connected to the steam inlet 170101 of the high parameter superheater 1701 of external type overheating device 17 by saturated vapor pipeline L9, the steam (vapor) outlet 170102 of external superheater 1701 is connected to the primary air inlet 201 of steam turbine 2 by superheated steam secondary duct L1b, preferably, the outlet bellows 608 of central cooler waste heat boiler 6 are connected with air-introduced machine 14.
Preferably, also have the conveyance conduit L12a of central cooler high-temperature flue gas 612a to be connected with the smoke inlet end of external type overheating device 17, the smoke outlet of external type overheating device 17 is connected with the smoke inlet end 609 of central cooler waste heat boiler 6 by superheater flue L13; With, in central cooler waste heat boiler, the conveyance conduit L12b of warm flue gas and/or low-temperature flue gas 612b is connected to the smoke inlet end 609 of central cooler waste heat boiler 6.
In the described device of the application, be provided with condensation water heater 601, low parameter evaporimeter 602, low parameter superheater 604, high parameter economizer 605, high parameter evaporimeter 606 and high parameter superheater 610 in the central cooler waste heat boiler 6a with built-in high parameter superheater 610, and be provided at an outer portion with central cooler waste heat boiler low parameter drum 603 and central cooler waste heat boiler high parameter drum 607.
Preferably, the conveyance conduit L12a of central cooler high-temperature flue gas 612a is also had to be connected to the smoke inlet end 609 of the central cooler waste heat boiler 6a with built-in high parameter superheater 610, in central cooler waste heat boiler, the conveyance conduit L12b of warm flue gas and/or low-temperature flue gas 612b is connected to the second smoke inlet 609a [the latter is in the below of built-in high parameter superheater 610] of central cooler waste heat boiler 6a, be connected with central cooler waste heat boiler low parameter drum 603 with also having oxygen-eliminating device 19, water conveyance conduit 18 or be connected to the entrance 60101 of the condensation water heater 601 of central cooler waste heat boiler 6a from the condensate water carrier pipe 1603 or 18 that the delivery port of condenser 15 is drawn, the outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 19, the delivery port of oxygen-eliminating device 19 is connected with the first entrance 60301 of the low parameter drum 603 of central cooler waste heat boiler 6a, first outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602, the outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603, second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 204 of steam turbine 2 by low parameter superheat steam pipeline L10.
More preferably, the outlet of the first water pump 7 is connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 in the central cooler waste heat boiler 6a with built-in high parameter superheater 610, the outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607, first outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, second outlet and the high parameter steam (vapor) outlet 60704 of central cooler waste heat boiler high parameter drum 607 are connected to the steam inlet 61001 of built-in high parameter superheater 610 by saturated vapor pipeline L9, the steam (vapor) outlet 61002 of high parameter superheater 610 connects the primary air inlet 201 of steam turbine 2 by superheated steam secondary duct L1b, preferably, the outlet bellows 608 of built-in superheater central cooler waste heat boiler 6a are connected with air-introduced machine 14.
In the described device of the application, preferably, the rotating shaft 202 of steam turbine 2 connects or drives the rotating shaft of generator 1, and the steam drain 203 of steam turbine is connected with condenser 15.Preferably, the condensate water efferent duct 1603 of condenser 15 is connected to the condensate water carrier pipe 18 of central cooler waste heat boiler 6.
Preferably, the low parameter drum 603 of central cooler waste heat boiler 6 has the 3rd outlet 60305 and the latter is connected to the water inlet of water pump 7, and the delivery port of water pump 7 is divided into above-described two water supply branch roads i.e. the first water supply branch road 701 and the second water supply branch road 702.
Preferably, the low parameter drum 603 with the central cooler waste heat boiler 6a of built-in superheater 610 also has the 3rd outlet 60305 and the latter is connected to the water inlet of water pump 7, and the delivery port of water pump 7 is divided into above-described two water supply branch roads i.e. the first water supply branch road 701 and the second water supply branch road 702.
In addition, a kind of method also providing residual heat and energy to fully utilize generating or use said apparatus carry out the method generated electricity, the method comprises: by the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, three strands of saturated steam flowings that the high parameter saturated vapor output channel L3 of steelmaking converter the storage heater 4 and high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 carries are undertaken overheated by the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler of saturated vapor 8 and are produced high parameter superheated steam after converging, produced high parameter superheated steam is inputted the main air intake of steam turbine 2 through vapours main pipeline L1,
Wherein, the saturated steam flowing carried by the high parameter saturated vapor output channel L9 of central cooler waste heat boiler:
1) the saturated vapor entrance 80601 of the superheater 806 in the overheated boiler 8 of saturated vapor is transported to, or
2) when central cooler waste heat boiler 6 has external type overheating device 17 in addition, be transported to the steam inlet 170101 of the high parameter superheater 1701 of external type overheating device 17, and the superheated steam exported from the steam (vapor) outlet 170102 of this high parameter superheater 1701 is transported to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b or is transported to the saturated vapor entrance 80601 of the superheater in the overheated boiler 8 of saturated vapor by superheated steam branch road L1c, or
3) when central cooler waste heat boiler 6 has superheater 610 (now also referred to as central cooler waste heat boiler 6a) in addition, be transported to the steam inlet 61001 of the built-in high parameter superheater 610 in central cooler waste heat boiler 6 (also referred to as 6a), and the superheated steam exported from the steam (vapor) outlet 61002 of high parameter superheater 610 in central cooler waste heat boiler is transported to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b or is transported to the saturated vapor entrance 80601 of the superheater in the overheated boiler 8 of saturated vapor by superheated steam branch road L1c,
With, optionally, the low parameter superheated steam (such as via low parameter pipeline) produced by the low parameter superheater of central cooler waste heat boiler inputs the filling mouth of steam turbine, to allow Steam Turbine Driven generator generate electricity.
Therefore, in the 4th detailed description of the invention of the application, the method of a kind of residual heat and energy comprehensive utilization generating is provided or uses the device described in above-mentioned first detailed description of the invention to carry out the method generated electricity, the method comprises: by the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4, four strands of saturated steam flowings that the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe the waste heat boiler 5 and high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6 carries are undertaken overheated by the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler of saturated vapor 8 and are produced high parameter superheated steam after converging, produced high parameter superheated steam is inputted the main air intake of steam turbine 2 through vapours main pipeline L1, with, optionally, the low parameter superheated steam (such as via low parameter pipeline L10) produced by the low parameter superheater 604 of central cooler waste heat boiler 6 inputs the filling mouth of steam turbine 2, to allow steam turbine 2 drive generator 1 to generate electricity.
In the 5th detailed description of the invention of the application, the method of a kind of residual heat and energy comprehensive utilization generating is provided or uses the device described in above-mentioned second detailed description of the invention to carry out the method generated electricity, the method comprises: by the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4, three strands of saturated steam flowings that the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 carries are undertaken overheated by the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler of saturated vapor 8 and are produced high parameter superheated steam after converging, produced high parameter superheated steam is inputted the main air intake of steam turbine 2 through vapours main pipeline L1a, in addition, the saturated steam flowing that the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6 exports is transported in the high parameter superheater 1701 of the external type overheating device 17 of central cooler waste heat boiler 6 and carries out overheated and be then delivered to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b or be such as transported to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor through vapours branch road L1c, with, optionally, the low parameter superheated steam (such as via low parameter pipeline L10) produced by the low parameter superheater 604 of central cooler waste heat boiler 6 inputs the filling mouth of steam turbine 2, to allow steam turbine 2 drive generator 1 to generate electricity.
In the 6th detailed description of the invention of the application, a kind of method providing residual heat and energy to fully utilize generating or the method using above-mentioned 3rd device described in detailed description of the invention to carry out generating electricity, the method comprises: by the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4, three strands of saturated steam flowings that the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 carries are undertaken overheated by the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler of saturated vapor 8 and are produced high parameter superheated steam after converging, produced high parameter superheated steam is inputted the main air intake of steam turbine 2 through vapours main pipeline L1a, in addition, the saturated steam flowing that the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6 exports is transported in the built-in high parameter superheater 610 of central cooler waste heat boiler 6a and carries out overheated and be then delivered to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b or be such as transported to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor through vapours branch road L1c, with, optionally, the low parameter superheated steam (such as via low parameter pipeline L10) produced by the low parameter superheater 604 of central cooler waste heat boiler 6 inputs the filling mouth of steam turbine 2, to allow steam turbine 2 drive generator 1 to generate electricity.
In the said method of the application, preferably, the steam discharge of steam turbine 2 enters in condenser 15 and forms condensate water, and this condensate water returns each workshop or this condensate water and to be transferred via water conveyance conduit 18 and successively by the condensation water heater 601 of central cooler waste heat boiler 6, low parameter evaporimeter 602, low parameter drum 603, low parameter superheater 604 and produce low parameter superheated steam and be delivered to the filling mouth 204 of steam turbine 2 via the low parameter superheat steam pipeline L10 of central cooler waste heat boiler 6.
Preferably, the steam discharge of steam turbine 2 enters in condenser 15 and forms condensate water, and this condensate water returns each workshop or this condensate water and to be transferred via water conveyance conduit 18 and successively by having the condensation water heater 601 of the central cooler waste heat boiler 6a of built-in high parameter superheater 610, low parameter evaporimeter 602, low parameter drum 603, low parameter superheater 604 and produce low parameter superheated steam and be delivered to the filling mouth 204 of steam turbine 2 via the low parameter superheat steam pipeline L10 of central cooler waste heat boiler 6.
Preferably, the steam discharge of steam turbine 2 enters in condenser 15 and forms condensate water, this condensate water returns to each workshop or this condensate water carries out deoxygenation by being transported in oxygen-eliminating device 19 after condensation water heater 601 heating of central cooler waste heat boiler 6, from oxygen-eliminating device 19, discharge the water of deoxygenation and input in the low parameter drum 603 of central cooler waste heat boiler 6, the water of discharging from the first outlet 60302 of low parameter drum 603 is transported to the low parameter evaporimeter 602 of central cooler waste heat boiler 6, the steam of discharging from low parameter evaporimeter 602 returns in low parameter drum 603, the steam of discharging from the second outlet 60304 of low parameter drum 603 is transfused to low parameter superheater 604, the low parameter superheated steam of discharging from low parameter superheater 604 is transported to the filling mouth 204 of steam turbine 2 by low parameter superheat steam pipeline L10.
Preferably, the steam discharge of steam turbine 2 enters in condenser 15 and forms condensate water, this condensate water returns to be transported in oxygen-eliminating device 19 after each workshop or this condensate water are heated by the condensation water heater 601 with the central cooler waste heat boiler 6a of built-in high parameter superheater 610 carries out deoxygenation, from oxygen-eliminating device 19, discharge the water of deoxygenation and input in the low parameter drum 603 of central cooler waste heat boiler 6, the water of discharging from the first outlet 60302 of low parameter drum 603 is transported to the low parameter evaporimeter 602 of central cooler waste heat boiler 6, the steam of discharging from low parameter evaporimeter 602 returns in low parameter drum 603, the steam of discharging from the second outlet 60304 of low parameter drum 603 is transfused to low parameter superheater 604, the low parameter superheated steam of discharging from low parameter superheater 604 is transported to the filling mouth 204 of steam turbine 2 by low parameter superheat steam pipeline L10.
Preferably, first pump 7 of the water conservancy in low parameter drum 603 carries water successively by the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5, sintering smoke exhaust pipe afterheat boiler evaporator 502, sintering smoke exhaust pipe waste heat boiler drum 503 and produce high parameter saturated vapor and be delivered to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor via the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701.
Preferably, water conservancy in low parameter drum 603 is conducted through the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701 with the first pump 7, the water of discharging from economizer 501 is transported in sintering smoke exhaust pipe waste heat boiler drum 503, the hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum 503 is further by sintering smoke exhaust pipe afterheat boiler evaporator 502, the high parameter steam of discharging from evaporimeter 502 returns in sintering smoke exhaust pipe waste heat boiler drum 503 again, the high parameter steam of discharging from drum 503 is transported to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor via the high parameter saturated vapor output channel L4 sintering smoke exhaust pipe waste heat boiler 5.
Preferably, water conservancy in low parameter drum 603 to be transferred via the second water supply branch road 702 with the first pump 7 and to produce high parameter saturated vapor by the high parameter economizer 605 of central cooler waste heat boiler 6, high parameter evaporimeter 606, high parameter drum 607 successively, and is delivered to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor via the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6.
Preferably, water conservancy in low parameter drum 603 the first pump 7 is transferred successively by the high parameter economizer 605 of central cooler waste heat boiler 6 via the second water supply branch road 702, high parameter evaporimeter 606, high parameter drum 607 produces high parameter saturated vapor, and the steam inlet 170101 of the high parameter superheater 1701 of external type overheating device 17 was delivered to via the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6, heat further through external type overheating device 17, superheated steam through heating is further delivered to the primary air inlet 201 of steam turbine 2 through vapours secondary duct L1b or is delivered to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor through vapours branch road L1c.
Preferably, water conservancy in low parameter drum 603 the first pump 7 is transferred successively by having the high parameter economizer 605 of the central cooler waste heat boiler 6a of built-in superheater 610 via the second water supply branch road 702, high parameter evaporimeter 606, high parameter drum 607 produces high parameter saturated vapor, and the entrance 61001 of superheater 610 is delivered to via the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6, heat further through built-in superheater 610, superheated steam through heating is further delivered to the primary air inlet 201 of steam turbine 2 through vapours secondary duct L1b or is delivered to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor through vapours branch road L1c.
In the method for the 4th detailed description of the invention, preferably, water conservancy in low parameter drum 603 the first pump 7 is transferred high parameter economizer 605 by central cooler waste heat boiler 6 via the second water supply branch road 702, the water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607, the hot water of discharging from the first outlet 60702 of high parameter drum 607 is also again returned in high parameter drum 607 by high parameter evaporimeter 606 heating and produces high parameter saturated vapor, then the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor is delivered to via the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6.
In the method for the 5th detailed description of the invention, preferably, water conservancy in low parameter drum 603 is transferred the high parameter economizer 605 of the central cooler waste heat boiler 6 by having external type overheating device 17 via the second water supply branch road 702 with the first pump 7, the water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607, the hot water of discharging from the first outlet 60702 of high parameter drum 607 is also again returned in high parameter drum 607 by high parameter evaporimeter 606 heating and produces high parameter saturated vapor, then the steam inlet 170101 of the high parameter superheater 1701 of external type overheating device 17 was delivered to via the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6, heat through high parameter superheater 1701, the superheated steam exported from the steam (vapor) outlet 170102 of high parameter superheater 1701 is delivered to the main air intake 201 of steam turbine 2 through vapours secondary duct L1b further or is delivered to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor further through vapours branch road L1c.
In the method for the 6th detailed description of the invention, preferably, water conservancy in low parameter drum 603 is transferred the high parameter economizer 605 of the central cooler waste heat boiler 6a by having built-in high parameter superheater 610 via the second water supply branch road 702 with the first pump 7, the water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607, the hot water of discharging from the first outlet 60702 of high parameter drum 607 is also again returned in high parameter drum 607 by high parameter evaporimeter 606 heating and produces high parameter saturated vapor, then the high parameter saturated vapor of discharging in high parameter drum 607 is delivered to the entrance 61001 of built-in high parameter superheater 610 via the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6, heat through built-in high parameter superheater 610, the superheated steam of discharging from the outlet 61002 of high parameter superheater 610 is delivered to the main air intake 201 of steam turbine 2 through vapours secondary duct L1b or is delivered to the saturated vapor entrance 80601 of the superheater (such as saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807) in the overheated boiler 8 of saturated vapor through vapours branch road L1c.
In the method for the 4th detailed description of the invention, preferably, central cooler flue gas 612 (such as from the high-temperature region of central cooler or the flue gas of middle warm area) is delivered to the smoke inlet end 609 of central cooler waste heat boiler 6 via conveyance conduit L12, then successively with the high parameter evaporimeter 606 being arranged on this central cooler waste heat boiler 6 inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6.
In the method for the 5th detailed description of the invention, preferably, be delivered to the smoke inlet of external type overheating device 17 via conveyance conduit L12a from the high-temperature flue gas 612a of central cooler high-temperature region, the flue gas that external type overheating device 17 is discharged and be transported to the smoke inlet end 609 of central cooler waste heat boiler 6 and form mixed flue gas via external superheater smoke discharging pipe L13 and middle temperature flue gas and/or low-temperature flue gas conveyance conduit L12b from flue gas warm in warm area in central cooler and/or low-temperature space and/or low-temperature flue gas 612b respectively, this mixed flue gas successively with the high parameter evaporimeter 606 being arranged on this central cooler waste heat boiler 6 inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6.
In the method for the 6th detailed description of the invention, preferably, the smoke inlet end 609 of central cooler waste heat boiler 6 is delivered to via conveyance conduit L12a, the high parameter superheater 610 of this flue gas in central cooler waste heat boiler 6a from the central cooler high-temperature flue gas 612a of central cooler high-temperature region; In central cooler, warm flue gas and/or low-temperature flue gas 612b are delivered to the second smoke inlet 609a of central cooler waste heat boiler 6a via conveyance conduit L12b and mix with the high-temperature flue gas after have passed through high parameter superheater 610, this mixed flue gas successively be arranged on the high parameter evaporimeter 606 of this central cooler waste heat boiler 6a inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6a.
In above-mentioned any one method, preferably, sintering device flue gas 506 delivers in the entrance fan housing 504 of sintering smoke exhaust pipe waste heat boiler 5 via sintering device flue gas conveyance conduit and also carries out indirect heat exchange with the evaporimeter 502 in sintering smoke exhaust pipe waste heat boiler 5 and economizer 501 (central flow through water or steam) successively, then discharges from the port of export 505 of sintering smoke exhaust pipe waste heat boiler 5.
Preferably, the burner 80101 of the burner 801 of coal gas 14 in saturated vapor heating boiler 8 enters combustion chamber 80103 combustion of saturated vapor heating boiler burner 801 and produces high-temperature flue gas, flue gas is upwards successively through supersaturated vapor heating boiler saturated vapor low temperature superheater 806, saturated vapor heating boiler saturated vapor high temperature superheater 807, again successively through supersaturated vapor heating boiler evaporimeter 804, saturated vapor heating boiler economizer 805, extract out finally by air-introduced machine 12.
Preferably, steelmaking converter drum 9 produces the saturated vapor of interruption and is transported in storage heater 7 via steelmaking converter drum saturated vapor pipeline L11.
Preferably, the steam of discharging from the steam drain 203 of steam turbine 2 enters condenser 3 and forms condensate water; Preferably, the condensate water formed is transported to steel-making and mill or is transported to the water inlet 80501 of economizer 805 of saturated vapor heating boiler 8, as a part for external feedwater 10 or external feedwater 10.In addition, the condensate water that the water of the external feedwater carrier pipe 18 of central cooler waste heat boiler and the water carrier pipe 10 of the overheated boiler of saturated vapor can select the condenser 15 in TRT to produce, also can replace with demineralized water or supplement.
Preferably, in heater for rolling steel drum saturated vapor pipeline L2, in storage heater saturated vapor pipeline L3, in the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5, in the saturated vapor pipeline L5 of the outside drum of saturated vapor heating boiler 8 803 or have built-in superheater 610 central cooler waste heat boiler 6a or have external superheater 17 central cooler waste heat boiler 6 high parameter saturated vapor output channel L9 in the temperature of each saturated steam flowing be 150-250 DEG C, preferred 160-240 DEG C independently of one another.
The temperature that saturated vapor heating boiler saturated vapor low temperature superheater exports 80602 place's steam is 250-350 DEG C, preferred 260-340 DEG C.
The temperature that saturated vapor heating boiler saturated vapor high temperature superheater exports 80702 place's superheated steams is 360-450 DEG C, and preferred 370-440 DEG C, more selects 380-420 DEG C.
Preferably, the pressure of the superheated steam of the superheater 807 of saturated vapor heating boiler 8 or built-in high parameter superheater 610 or external superheater 17 generation is >=0.60MPa, preferably >=0.7MPa, such as pressure is 0.6MPa-2.5MPa, preferred 0.8MPa-2.0MPa, more preferably 1.0MPa-1.8MPa, or its temperature be >=350 DEG C, preferably >=360 DEG C, such as its temperature is 370 DEG C-460 DEG C, preferably 380-450 DEG C, more preferably 390 DEG C-430 DEG C.
Generally, the pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 0.25MPa to 0.6MPa, preferred 0.3MPa to 0.5MPa, or its temperature is 160 DEG C-300 DEG C, preferably 170 DEG C-280 DEG C.
Preferably, after the branch point that L1b and L1c intersects, valve V1 is set on L1b pipeline, valve V2 is set on L1c pipeline simultaneously.Or switch valve is set at the branch point place that L1b and L1c intersects.When the flue-gas temperature of the high-temperature region from central cooler is on the low side, timely valve-off V1 also opens valve V2 or opens L1c by switch valve in time and cut off the passage that L1b back segment flows to the main air intake of steam turbine, the even running of maintenance system, guarantees that high efficiency generates electricity.
Embodiment 1
As shown in fig. 1, a kind of residual heat and energy comprehensive utilization TRT comprises: generator 1, for driving the steam turbine 2 of generator 1, heater for rolling steel drum 3, steelmaking converter steam accumulator 4, sintering smoke exhaust pipe waste heat boiler 5, central cooler waste heat boiler 6 and the overheated boiler 8 of saturated vapor with saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807, the wherein high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4, the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 is connected to the saturated vapor entrance 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor respectively, the superheated steam outlet 80702 of the overheated boiler of saturated vapor 8 is connected to the main air intake 201 of steam turbine 2 through vapours main pipeline L1, the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6 is also connected to the saturated vapor entrance 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor, the rotating shaft 202 of steam turbine 2 connects or drives the rotating shaft of generator 1, and the low parameter superheated steam outlet 60402 of central cooler waste heat boiler 6 is connected to the filling mouth 204 of steam turbine via low parameter jet chimney L10.
Saturated vapor heating boiler 8 has the configuration of " π " shape or " П " shape, wherein the side of " π " shape or " П " shape or right side set gradually saturated vapor heating boiler burner 801 from top to bottom, the saturated vapor low temperature superheater 806 of saturated vapor heating boiler, the saturated vapor high temperature superheater 807 of saturated vapor heating boiler, and the opposite side of " π " shape or " П " shape or left side set gradually the evaporimeter 804 of saturated vapor heating boiler and the economizer 805 of saturated vapor heating boiler from top to bottom, and the top platform of " π " shape or " П " shape is the passage of combustion product gases, the left and right sides is by the combustion product gases channel connection in top platform portion.
Saturated vapor heating boiler drum 803 is also provided with in saturated vapor heating boiler 8 outside, from the saturated vapor pipeline L5 that this saturated vapor heating boiler drum 803 is drawn, the i.e. saturated vapor pipeline L5 of the overheated boiler 8 of saturated vapor, is also connected to the steam inlet 80601 of the saturated vapor low temperature superheater 806 being positioned at the overheated boiler 8 of saturated vapor.
The hot water outlet 80502 of saturated vapor heating boiler economizer 805 is connected to the first entrance 80301 of saturated vapor heating boiler drum 803 by pipeline L6, first outlet 80302 of saturated vapor heating boiler drum 803 is connected to the entrance 80401 of saturated vapor heating boiler evaporimeter 804 by pipeline L7, the outlet 80402 of saturated vapor heating boiler evaporimeter 804 is connected to the second entrance 80303 of saturated vapor heating boiler drum 803 by pipeline L8, from the saturated vapor pipeline L5 that the second outlet 80304 of saturated vapor heating boiler drum 803 is drawn, the i.e. saturated vapor pipeline L5 of the overheated boiler 8 of saturated vapor, also the entrance 80601 of the saturated vapor low temperature superheater 806 being positioned at the overheated boiler 8 of saturated vapor is connected to.
Saturated vapor heating boiler 8 also comprises: the saturated vapor heating boiler outlet bellows or the fan housing 808 that are positioned at the cigarette airflow downstream of the economizer 805 of saturated vapor heating boiler 8, outlet bellows or the fan housing 808 of saturated vapor heating boiler 8 are connected with air-introduced machine 12.Saturated vapor heating boiler attemperator 802 between saturated vapor heating boiler saturated vapor low temperature superheater 806 and saturated vapor heating boiler saturated vapor high temperature superheater 807.
Saturated vapor heating boiler burner 801 comprises saturated vapor heating boiler burner 80101, saturated vapor heating boiler furnace wall 80102, saturated vapor heating boiler combustion chamber 80103.Saturated vapor heating boiler combustion chamber 80103 is surrounded by saturated vapor heating boiler furnace wall 80102.Saturated vapor heating boiler furnace wall 80102 adopts fire-resistant heat insulating material.
Saturated vapor heating boiler burner 80101 is arranged on saturated vapor heating boiler furnace wall 80102.In addition, saturated vapor heating boiler furnace wall is also provided with saturated vapor heating boiler explosion proof door 80104, saturated vapor heating boiler flame-observing hole 80105 and saturated vapor heating boiler wind-supplying mouth 80106.
Saturated vapor heating boiler attemperator 802 is positioned at the external world of saturated vapor heating boiler, and the two-port of saturated vapor heating boiler attemperator 802 is connected to the steam (vapor) outlet 80602 of saturated vapor heating boiler saturated vapor low temperature superheater 806 and the steam inlet 80701 of saturated vapor heating boiler saturated vapor high temperature superheater 807 via two pipelines respectively.The air-introduced machine 12 of auxiliary equipment is provided as in the cigarette airflow downstream of economizer 805.
Air-introduced machine 12 is connected by the outlet bellows of air-introduced machine airduct 1201 and saturated vapor heating boiler 8 or fan housing 808.Water pipe 10 or water carrier pipe 10 is had to be connected with the water inlet 80501 of saturated vapor heating boiler economizer 805.
The gas inlet of the burner 80101 of saturated vapor heating boiler 8 is connected with the airduct 1101 of gas piping 1401 and air blast 11 respectively with air inlet.
Gas piping 14 is provided with gas regulator 1402.The coal gas 14 that gas piping 1401 is carried is steel plant's residual gas.
The heater for rolling steel drum saturated vapor pipeline L2 drawn from the steam (vapor) outlet 303 of heater for rolling steel drum 3 is being connected to the steam inlet 80601 of the saturated vapor low temperature superheater 806 of saturated vapor heating boiler 8 further with steel-making storage heater saturated vapor pipeline L3, the saturated vapor pipeline L5 of high parameter saturated vapor output channel L4 and saturated vapor heating boiler 8 that sinters smoke exhaust pipe waste heat boiler 5 after converging.Or the heater for rolling steel drum saturated vapor pipeline L2 drawn from the steam (vapor) outlet 303 of heater for rolling steel drum 3, steel-making storage heater saturated vapor pipeline L3, the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe the waste heat boiler 5 and saturated vapor pipeline L5 of saturated vapor heating boiler 8 are connected to the steam inlet 80601 of the saturated vapor low temperature superheater 806 of saturated vapor heating boiler 8 respectively.
Heater for rolling steel drum saturated vapor pipeline L2 is provided with heater for rolling steel steam pressure control valve 501.
The steam (vapor) outlet 902 of steelmaking converter drum 9 is connected with the steam inlet 401 of storage heater 4 by steelmaking converter drum saturated vapor pipeline L11.
Steelmaking converter drum saturated vapor pipeline L11 is provided with steelmaking converter steam pressure control valve group 903 and/or check-valves 904.
Storage heater saturated vapor pipeline L3 is provided with accumulator outlet steam check-valves 403, and/or storage heater saturated vapor pipeline L3 is provided with accumulator outlet steam control valve group 404.
The steam drain 203 of steam turbine 2 is connected to the steam inlet 1501 of condenser 15, and/or the condensate water outlet 1502 of condenser 15 is connected with the entrance 1601 of condensate pump 16, and condensate pump outlet 1602 is connected with condensate pipe 1603.
Condensate pipe 1603 is connected to steel-making and mill.Preferably, condensate pipe 1603 is connected to the water carrier pipe 10 i.e. water inlet 80501 of economizer 805 of saturated vapor heating boiler 8 and/or is connected to the water conveyance conduit 18 of central cooler waste heat boiler 6.
In the device of the present embodiment 1, described device also comprises condenser 15, and the steam drain 203 of steam turbine is connected to condenser 15.
The high parameter saturated vapor output channel L4 of the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4 and sintering smoke exhaust pipe waste heat boiler 5 is connected to the saturated vapor entrance 80601 of the overheated boiler 8 of saturated vapor after merging.
The steam (vapor) outlet 902 of steelmaking converter drum 9 is connected with the steam inlet 401 of steelmaking converter steam accumulator 4 by steelmaking converter drum saturated vapor pipeline L11.
Economizer 501, evaporimeter 502 be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum 503 is provided with in sintering smoke exhaust pipe waste heat boiler 5.
Described device is also provided with the first water pump 7, the outlet of the first water pump 7 is connected to the water inlet 50101 of the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 by the first water supply branch road 701, the outlet 50102 of economizer 501 is connected to the first entrance 50301 of the drum 503 of sintering smoke exhaust pipe waste heat boiler 5, first outlet 50302 of drum 503 is connected with the entrance 50201 of evaporimeter 502, the outlet 50202 of evaporimeter 502 is connected with the second entrance 50303 of drum 503, second outlet of drum 503 and high parameter steam (vapor) outlet 50304 are connected to the steam inlet 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor by saturated vapor pipeline L4, preferably, the outlet bellows 505 sintering smoke exhaust pipe waste heat boiler 5 are connected with air-introduced machine 12, preferably, the entrance fan housing 504 of this sintering smoke exhaust pipe waste heat boiler 5 connects sintering device flue gas conveyance conduit 506.
Described device also comprises condenser 15, and the steam drain 203 of steam turbine is connected to condenser 15; And/or, be provided with condensation water heater 601, low parameter evaporimeter 602, low parameter superheater 604, high parameter economizer 605 and high parameter evaporimeter 606 in central cooler waste heat boiler 6 and be provided at an outer portion with central cooler waste heat boiler low parameter drum 603 and central cooler waste heat boiler high parameter drum 607.
Oxygen-eliminating device 19 is also had to be connected with central cooler waste heat boiler low parameter drum 603 in described device, water conveyance conduit 18 or be connected to the entrance 60101 of the condensation water heater 601 of central cooler waste heat boiler 6 from the condensate water carrier pipe 1603 or 18 that the delivery port of condenser 3 is drawn, the outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 19, the delivery port of oxygen-eliminating device 19 is connected with the first entrance 60301 of the low parameter drum 603 of central cooler waste heat boiler 6, first outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602, the outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603, second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 204 of steam turbine 2 by low parameter superheat steam pipeline L10.
In the described device of the application, the conveyance conduit L12 of central cooler flue gas 612 is also had to be connected to the smoke inlet end 609 of central cooler waste heat boiler 6, be connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 of central cooler waste heat boiler 6 with the outlet of water pump 7, the outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607, first outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, second outlet and the high parameter steam (vapor) outlet 60704 of central cooler waste heat boiler high parameter drum 607 are connected to the main air intake 201 of steam turbine 2 by saturated vapor pipeline L9, preferably, the outlet bellows 608 of central cooler waste heat boiler 6 are connected with air-introduced machine 14.
In described device, the rotating shaft 202 of steam turbine 2 connects or drives the rotating shaft of generator 1, and the steam drain 203 of steam turbine is connected with condenser 15.The condensate water efferent duct 1603 of condenser 15 is connected to the condensate water carrier pipe 18 of central cooler waste heat boiler 6.
The low parameter drum 603 of central cooler waste heat boiler 6 has the 3rd outlet 60305 and the latter is connected to the water inlet of water pump 7, and the delivery port of water pump 7 is divided into above-described two water supply branch roads i.e. the first water supply branch road 701 and the second water supply branch road 702.
In addition, a kind of method of residual heat and energy comprehensive utilization generating, the method adopts said apparatus, the method comprises: by the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4, four strands of saturated steam flowings that the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe the waste heat boiler 5 and high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6 carries preferably are undertaken overheated by the saturated vapor low temperature superheater 806 in the overheated boiler of saturated vapor 8 and saturated vapor high temperature superheater 807 and are produced high parameter superheated steam after converging, produced high parameter superheated steam is inputted the main air intake of steam turbine 2 through vapours main pipeline L1, with, the low parameter superheated steam produced by the low parameter superheater 604 of central cooler waste heat boiler 6 inputs the filling mouth of steam turbine 2, to allow steam turbine 2 drive generator 1 to generate electricity via low parameter pipeline L10.
The steam discharge of steam turbine 2 enters in condenser 15 and forms condensate water, this condensate water returns to each workshop or this condensate water carries out deoxygenation by being transported in oxygen-eliminating device 19 after condensation water heater 601 heating of central cooler waste heat boiler 6, from oxygen-eliminating device 19, discharge the water of deoxygenation and input in the low parameter drum 603 of central cooler waste heat boiler 6, the water of discharging from the first outlet 60302 of low parameter drum 603 is transported to the low parameter evaporimeter 602 of central cooler waste heat boiler 6, the steam of discharging from low parameter evaporimeter 602 returns in low parameter drum 603, the steam of discharging from the second outlet 60304 of low parameter drum 603 is transfused to low parameter superheater 604, the low parameter superheated steam of discharging from low parameter superheater 604 is transported to the filling mouth 204 of steam turbine 2 by low parameter superheat steam pipeline L10.
Water conservancy in low parameter drum 603 is conducted through the economizer 501 of sintering smoke exhaust pipe waste heat boiler 5 via the first water supply branch road 701 with the first pump 7, the water of discharging from economizer 501 is transported in sintering smoke exhaust pipe waste heat boiler drum 503, the hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum 503 is further by sintering smoke exhaust pipe afterheat boiler evaporator 502, the high parameter steam of discharging from evaporimeter 502 returns in sintering smoke exhaust pipe waste heat boiler drum 503 again, the high parameter steam of discharging from drum 503 is transported to the saturated vapor entrance 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor via the high parameter saturated vapor output channel L4 sintering smoke exhaust pipe waste heat boiler 5.
Water conservancy in low parameter drum 603 the first pump 7 is transferred high parameter economizer 605 by central cooler waste heat boiler 6 via the second water supply branch road 702, the water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607, the hot water of discharging from the first outlet 60702 of high parameter drum 607 is also again returned in high parameter drum 607 by high parameter evaporimeter 606 heating and produces high parameter saturated vapor, then the saturated vapor entrance 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor is delivered to via the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6.
Central cooler flue gas 612 (namely from the flue gas of the high-temperature region of central cooler or the flue gas from middle warm area) is delivered to the smoke inlet end 609 of central cooler waste heat boiler 6 via conveyance conduit L12, then successively be arranged on the high parameter evaporimeter 606 of this central cooler waste heat boiler 6 inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6.
Sintering device flue gas 506 delivers in the entrance fan housing 504 of sintering smoke exhaust pipe waste heat boiler 5 via sintering device flue gas conveyance conduit and also carries out indirect heat exchange with the evaporimeter 502 in sintering smoke exhaust pipe waste heat boiler 5 and economizer 501 (central flow through water or steam) successively, then discharges from the port of export 505 of sintering smoke exhaust pipe waste heat boiler 5.
The burner 80101 of the burner 801 of coal gas 14 in saturated vapor heating boiler 8 enters combustion chamber 80103 combustion of saturated vapor heating boiler burner 801 and produces high-temperature flue gas, flue gas is upwards successively through supersaturated vapor heating boiler saturated vapor low temperature superheater 806, saturated vapor heating boiler saturated vapor high temperature superheater 807, again successively through supersaturated vapor heating boiler evaporimeter 804, saturated vapor heating boiler economizer 805, extract out finally by air-introduced machine 12.
Steelmaking converter drum 9 produces the saturated vapor of interruption and is transported in storage heater 7 via steelmaking converter drum saturated vapor pipeline L11.
The steam of discharging from the steam drain 203 of steam turbine 2 enters condenser 3 and forms condensate water.The condensate water formed is transported to steel-making and mill or is transported to the water inlet 80501 of economizer 805 of saturated vapor heating boiler 8, as a part for external feedwater 10 or external feedwater 10.In addition, the condensate water that the water of the external feedwater carrier pipe 18 of central cooler waste heat boiler and the water carrier pipe 10 of the overheated boiler of saturated vapor can select the condenser 15 in TRT to produce, also can replace with demineralized water or supplement.
The temperature of each saturated steam flowing in the high parameter saturated vapor output channel L4 of heater for rolling steel drum saturated vapor pipeline L2, storage heater saturated vapor pipeline L3, sintering smoke exhaust pipe waste heat boiler 5, the saturated vapor pipeline L5 of the outside drum 803 of saturated vapor heating boiler 8 is 180-230 DEG C independently of one another.
In addition, the temperature of the saturated steam flowing in the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6 is 340-360 DEG C, and this temperature-independent is in the temperature of central cooler flue gas.
The temperature that saturated vapor heating boiler saturated vapor low temperature superheater exports 80602 place's steam is 290-320 DEG C.
The temperature that saturated vapor heating boiler saturated vapor high temperature superheater exports 80702 place's superheated steams is 390-410 DEG C.
The pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 0.25MPa to 0.4MPa, and temperature is 170 DEG C-270 DEG C.
The pressure of the superheated steam of saturated vapor high temperature superheater 807 generation of the overheated boiler 8 of saturated vapor is >=0.85MPa.
Embodiment 2
The residual heat and energy comprehensive utilization TRT used in the present embodiment is substantially the same with embodiment 1, only in the design of central cooler waste heat boiler 6, has difference, as shown in Figure 2.Central cooler waste heat boiler 6 has external type overheating device 17 in addition.
The residual heat and energy comprehensive utilization TRT of the present embodiment 2 comprises: generator 1, for driving the steam turbine 2 of generator 1, heater for rolling steel drum 3, steelmaking converter steam accumulator 4, sintering smoke exhaust pipe waste heat boiler 5, central cooler waste heat boiler 6, external type overheating device 17 set near central cooler waste heat boiler 6 and there is the overheated boiler 8 of saturated vapor of saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807, wherein: the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter the storage heater 4 and high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 is connected to the saturated vapor entrance 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor respectively, the superheated steam outlet 80702 of the overheated boiler of saturated vapor 8 is connected to the main air intake 201 of steam turbine 2 through vapours main pipeline L1a, the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6 is connected to the steam inlet 170101 of the high parameter superheater 1701 of external type overheating device 17, and the steam (vapor) outlet 170102 of this high parameter superheater 1701 is connected to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b, the rotating shaft 202 of steam turbine 2 connects or drives the rotating shaft of generator 1, and, the low parameter superheated steam outlet 60402 of central cooler waste heat boiler 6 is connected to the filling mouth 204 of steam turbine via low parameter pipeline L10, with, separate from superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b the saturated vapor entrance 80601 that a superheated steam branch road L1c is connected to the overheated boiler 8 of saturated vapor.
After the branch point that L1b and L1c intersects, valve V1 is set on L1b pipeline, valve V2 is set on L1c pipeline simultaneously.
In the described device of the present embodiment 2, the outlet of the first water pump 7 is connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 of central cooler waste heat boiler 6, the outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607, first outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, second outlet of central cooler waste heat boiler high parameter drum 607 and high parameter steam (vapor) outlet 60704 are connected to the steam inlet 170101 of the high parameter superheater 1701 of external type overheating device 17 by saturated vapor pipeline L9, the steam (vapor) outlet 170102 of external superheater 1701 is connected to the primary air inlet 201 of steam turbine 2 by superheated steam secondary duct L1b.The outlet bellows 608 of central cooler waste heat boiler 6 are connected with air-introduced machine 14.
Also have the conveyance conduit L12a of central cooler high-temperature flue gas 612a to be connected with the smoke inlet end of external type overheating device 17, the smoke outlet of external type overheating device 17 is connected with the smoke inlet end 609 of central cooler waste heat boiler 6 by superheater flue L13.In central cooler waste heat boiler, the conveyance conduit L12b of warm flue gas and/or low-temperature flue gas 612b is connected to the smoke inlet end 609 of central cooler waste heat boiler 6.
Identical in other design and implementation example 1 of device.
After the branch point that L1b and L1c intersects, valve V1 is set on L1b pipeline, valve V2 is set on L1c pipeline simultaneously.Or switch valve is set at the branch point place that L1b and L1c intersects.When the flue-gas temperature of the high-temperature region from central cooler is on the low side, timely valve-off V1 also opens valve V2 or opens L1c by switch valve in time and cut off the passage that L1b back segment flows to the main air intake of steam turbine, the even running of maintenance system, guarantees that high efficiency generates electricity.
Adopt the electricity-generating method of said apparatus as described below: by the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4, three strands of saturated steam flowings that the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 carries are undertaken overheated by the saturated vapor low temperature superheater 806 in the overheated boiler of saturated vapor 8 and saturated vapor high temperature superheater 807 and are produced high parameter superheated steam after converging, produced high parameter superheated steam is inputted the main air intake of steam turbine 2 through vapours main pipeline L1a, in addition, the saturated steam flowing that the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6 exports is transported in the high parameter superheater 1701 of the external type overheating device 17 of central cooler waste heat boiler 6 and carries out overheated and be then delivered to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b or be such as transported to the saturated vapor entrance 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor through vapours branch road L1c, with, the low parameter superheated steam produced by the low parameter superheater 604 of central cooler waste heat boiler 6 inputs the filling mouth of steam turbine 2 via low parameter pipeline L10, to allow steam turbine 2 drive generator 1 to generate electricity.
Water conservancy in low parameter drum 603 is transferred the high parameter economizer 605 of the central cooler waste heat boiler 6 by having external type overheating device 17 via the second water supply branch road 702 with the first pump 7, the water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607, the hot water of discharging from the first outlet 60702 of high parameter drum 607 is also again returned in high parameter drum 607 by high parameter evaporimeter 606 heating and produces high parameter saturated vapor, then the steam inlet 170101 of the high parameter superheater 1701 of external type overheating device 17 was delivered to via the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6, heat through high parameter superheater 1701, the superheated steam exported from the steam (vapor) outlet 170102 of high parameter superheater 1701 is delivered to the main air intake 201 of steam turbine 2 through vapours secondary duct L1b further or is delivered to the saturated vapor entrance 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor further through vapours branch road L1c.
Be delivered to the smoke inlet of external type overheating device 17 via conveyance conduit L12a from the high-temperature flue gas 612a of central cooler high-temperature region, the flue gas that external type overheating device 17 is discharged and be transported to the smoke inlet end 609 of central cooler waste heat boiler 6 and form mixed flue gas via external superheater smoke discharging pipe L13 and middle temperature flue gas and/or low-temperature flue gas conveyance conduit L12b from flue gas warm in warm area in central cooler and/or low-temperature space and/or low-temperature flue gas 612b respectively, this mixed flue gas successively with the high parameter evaporimeter 606 being arranged on this central cooler waste heat boiler 6 inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6.
The other side of method is in the same manner as in Example 1.
The temperature of each saturated steam flowing in the high parameter saturated vapor output channel L4 of heater for rolling steel drum saturated vapor pipeline L2, storage heater saturated vapor pipeline L3, sintering smoke exhaust pipe waste heat boiler 5, the saturated vapor pipeline L5 of the outside drum 803 of saturated vapor heating boiler 8 is 180-230 DEG C independently of one another.
In addition, in the high parameter saturated vapor output channel L1b of central cooler waste heat boiler 6, the temperature of saturated steam flowing is 340-370 DEG C.
The temperature that saturated vapor heating boiler saturated vapor low temperature superheater exports 80602 place's steam is 290-320 DEG C.
The temperature that saturated vapor heating boiler saturated vapor high temperature superheater exports 80702 place's superheated steams is 390-410 DEG C.
The pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 0.25MPa to 0.4MPa, and temperature is 170 DEG C-270 DEG C.
The pressure of the superheated steam of saturated vapor high temperature superheater 807 generation of the overheated boiler 8 of saturated vapor is >=0.80MPa.
Embodiment 3
The residual heat and energy comprehensive utilization TRT used in the present embodiment is substantially the same with embodiment 1, only in the design of central cooler waste heat boiler 6, has difference, as shown in Figure 3.Central cooler waste heat boiler 6 has superheater 610 (now also referred to as central cooler waste heat boiler 6a) in addition.
The residual heat and energy comprehensive utilization TRT of the present embodiment 3 comprises: generator 1, for driving the steam turbine 2 of generator 1, heater for rolling steel drum 3, steelmaking converter steam accumulator 4, sintering smoke exhaust pipe waste heat boiler 5, the central cooler waste heat boiler 6a with built-in high parameter superheater 610 and the overheated boiler 8 of the saturated vapor with saturated vapor low temperature superheater 806 and saturated vapor high temperature superheater 807, wherein: the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter the storage heater 4 and high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 is connected to the saturated vapor entrance 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor respectively, the superheated steam outlet 80702 of the overheated boiler of saturated vapor 8 is connected to the main air intake 201 of steam turbine 2 through vapours main pipeline L1a, the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6a is connected to the steam inlet 61001 of the high parameter superheater 610 in central cooler waste heat boiler 6, and in central cooler waste heat boiler, the steam (vapor) outlet 61002 of high parameter superheater 610 is connected to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b, the rotating shaft 202 of steam turbine 2 connects or drives the rotating shaft of generator 1, and, the low parameter superheated steam outlet 60402 of central cooler waste heat boiler 6 is connected to the filling mouth 204 of steam turbine via low parameter pipeline L10, with, separate from superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b the saturated vapor entrance 80601 that a superheated steam branch road L1c is connected to the overheated boiler 8 of saturated vapor.
Be provided with condensation water heater 601, low parameter evaporimeter 602, low parameter superheater 604, high parameter economizer 605, high parameter evaporimeter 606 and high parameter superheater 610 in the central cooler waste heat boiler 6a with built-in high parameter superheater 610, and be provided at an outer portion with central cooler waste heat boiler low parameter drum 603 and central cooler waste heat boiler high parameter drum 607.
The conveyance conduit L12a of central cooler high-temperature flue gas 612a is also had to be connected to the smoke inlet end 609 of the central cooler waste heat boiler 6a with built-in high parameter superheater 610, in central cooler waste heat boiler, the conveyance conduit L12b of warm flue gas and/or low-temperature flue gas 612b is connected to the second smoke inlet 609a [the latter is in the below of built-in high parameter superheater 610] of central cooler waste heat boiler 6a, be connected with central cooler waste heat boiler low parameter drum 603 with also having oxygen-eliminating device 19, water conveyance conduit 18 or be connected to the entrance 60101 of the condensation water heater 601 of central cooler waste heat boiler 6a from the condensate water carrier pipe 1603 or 18 that the delivery port of condenser 15 is drawn, the outlet 60102 of condensation water heater 601 is connected with the water inlet of oxygen-eliminating device 19, the delivery port of oxygen-eliminating device 19 is connected with the first entrance 60301 of the low parameter drum 603 of central cooler waste heat boiler 6a, first outlet 60302 of low parameter drum 603 is connected with the entrance 60201 of central cooler waste heat boiler low parameter evaporimeter 602, the outlet 60202 of low parameter evaporimeter 602 is connected with the second entrance 60303 of low parameter drum 603, second outlet 60304 of central cooler waste heat boiler low parameter drum 603 is connected with the entrance 60401 of low parameter superheater 604, the outlet 60402 of low parameter superheater 604 is connected with the filling mouth 204 of steam turbine 2 by low parameter superheat steam pipeline L10.
The outlet of the first water pump 7 is connected by the entrance 60501 of the second water supply branch road 702 with the high parameter economizer 605 in the central cooler waste heat boiler 6a with built-in high parameter superheater 610, the outlet 60502 of high parameter economizer 605 is connected with the first entrance 60701 of central cooler waste heat boiler high parameter drum 607, first outlet 60702 of high parameter drum 607 is connected with the entrance 60601 of central cooler waste heat boiler high parameter evaporimeter 606, the outlet 60602 of high parameter evaporimeter 606 is connected with the second entrance 60703 of high parameter drum 607, second outlet and the high parameter steam (vapor) outlet 60704 of central cooler waste heat boiler high parameter drum 607 are connected to the steam inlet 61001 of built-in high parameter superheater 610 by saturated vapor pipeline L9, the steam (vapor) outlet 61002 of high parameter superheater 610 connects the primary air inlet 201 of steam turbine 2 by superheated steam secondary duct L1b, preferably, the outlet bellows 608 of built-in superheater central cooler waste heat boiler 6a are connected with air-introduced machine 14.
Identical in other design and implementation example 1 of device.
After the branch point that L1b and L1c intersects, valve V1 is set on L1b pipeline, valve V2 is set on L1c pipeline simultaneously.Or switch valve is set at the branch point place that L1b and L1c intersects.When the flue-gas temperature of the high-temperature region from central cooler is on the low side, timely valve-off V1 also opens valve V2 or opens L1c by switch valve in time and cut off the passage that L1b back segment flows to the main air intake of steam turbine, the even running of maintenance system, guarantees that high efficiency generates electricity.
Adopt the electricity-generating method of said apparatus as described below: by the high parameter saturated vapor output channel L2 of heater for rolling steel drum 3, the high parameter saturated vapor output channel L3 of steelmaking converter storage heater 4, three strands of saturated steam flowings that the high parameter saturated vapor output channel L4 of sintering smoke exhaust pipe waste heat boiler 5 carries are undertaken overheated by the saturated vapor low temperature superheater 806 in the overheated boiler of saturated vapor 8 and saturated vapor high temperature superheater 807 and are produced high parameter superheated steam after converging, produced high parameter superheated steam is inputted the main air intake of steam turbine 2 through vapours main pipeline L1a, in addition, the saturated steam flowing that the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6 exports is transported in the built-in high parameter superheater 610 of central cooler waste heat boiler 6a and carries out overheated and be then delivered to the main air intake 201 of steam turbine 2 by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline L1b or be such as transported to the saturated vapor entrance 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor through vapours branch road L1c, with, the low parameter superheated steam produced by the low parameter superheater 604 of central cooler waste heat boiler 6 inputs the filling mouth of steam turbine 2 via low parameter pipeline L10, to allow steam turbine 2 drive generator 1 to generate electricity.
Water conservancy in low parameter drum 603 is transferred the high parameter economizer 605 of the central cooler waste heat boiler 6a by having built-in high parameter superheater 610 via the second water supply branch road 702 with the first pump 7, the water of discharging from high parameter economizer 605 inputs in high parameter drum 607 via the first entrance 60701 of high parameter drum 607, the hot water of discharging from the first outlet 60702 of high parameter drum 607 is also again returned in high parameter drum 607 by high parameter evaporimeter 606 heating and produces high parameter saturated vapor, then the high parameter saturated vapor of discharging in high parameter drum 607 is delivered to the entrance 61001 of built-in high parameter superheater 610 via the high parameter saturated vapor output channel L9 of central cooler waste heat boiler 6, heat through built-in high parameter superheater 610, the superheated steam of discharging from the outlet 61002 of high parameter superheater 610 is delivered to the main air intake 201 of steam turbine 2 through vapours secondary duct L1b or is delivered to the saturated vapor entrance 80601 of the saturated vapor low temperature superheater 806 in the overheated boiler 8 of saturated vapor through vapours branch road L1c.
The smoke inlet end 609 of central cooler waste heat boiler 6 is delivered to via conveyance conduit L12a, the high parameter superheater 610 of this flue gas in central cooler waste heat boiler 6a from the central cooler high-temperature flue gas 612a of central cooler high-temperature region; In central cooler, warm flue gas and/or low-temperature flue gas 612b are delivered to the second smoke inlet 609a of central cooler waste heat boiler 6a via conveyance conduit L12b and mix with the high-temperature flue gas after have passed through high parameter superheater 610, this mixed flue gas successively be arranged on the high parameter evaporimeter 606 of this central cooler waste heat boiler 6a inside, high parameter economizer 605, low parameter superheater 604, low parameter evaporimeter 602 and condensation water heater 601 (central flow through water or steam) and carry out indirect heat exchange, finally discharge from the smoke outlet 608 of central cooler waste heat boiler 6a.
The temperature of each saturated steam flowing in the high parameter saturated vapor output channel L4 of heater for rolling steel drum saturated vapor pipeline L2, storage heater saturated vapor pipeline L3, sintering smoke exhaust pipe waste heat boiler 5, the saturated vapor pipeline L5 of the outside drum 803 of saturated vapor heating boiler 8 is 180-230 DEG C independently of one another.
In addition, in the high parameter saturated vapor output channel L1b of central cooler waste heat boiler 6, the temperature of saturated steam flowing is 350-375 DEG C.
The temperature that saturated vapor heating boiler saturated vapor low temperature superheater exports 80602 place's steam is 290-320 DEG C.
The temperature that saturated vapor heating boiler saturated vapor high temperature superheater exports 80702 place's superheated steams is 390-410 DEG C.
The pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater 604 produces is 0.25MPa to 0.4MPa, and temperature is 170 DEG C-270 DEG C.
The pressure of the superheated steam of saturated vapor high temperature superheater 807 generation of the overheated boiler 8 of saturated vapor is >=0.80MPa.
The beneficial effect implementing this patent is described with example below:
Certain iron and steel enterprise 300m 2sintering circular-cooler waste heat boiler produces 1.2MPa, 350 DEG C of steam 28t/h, 0.3MPa, 180 DEG C of steam 9t/h; Sintering machine smoke exhaust pipe waste heat boiler can produce the saturated vapor 7t/h of 1.2MPa; 2 120t steelmaking converters produce the saturated vapor 20t/h of 1.2MPa; Heater for rolling steel residue has 1.2MPa saturated vapor 13t/h; Separately there is 21000Nm 3the blast furnace gas of/h.
Adopt the scheme of the embodiment of the present invention 1: superheated steam 40t/h being heated to be 420 DEG C, the gas boiler of another heating saturated vapor can produce 1.2MPa saturated vapor 14t/h, total can obtain 1.2MPa, 420 DEG C of steam 54t/h, add sintering circular-cooler waste heat boiler 1.2MPa, 350 DEG C of steam 28t/h, 0.3MPa, 180 DEG C of steam 9t/h; Total can generating capacity be 17750kW.The generating set of a set of 18MW can be built, operation maintenance personnel 24 people.
As the scheme adopting dispersion at present to utilize, namely 1 cover sintering circular-cooler waste heat recovery unit is only set up in sintering plant region, and 1 cover saturated steam turbine is set up in steel-making steel rolling region, and blast furnace gas sets up 1 cover gas to generate electricity unit.Then sintering circular-cooler waste heat boiler steam can generate electricity 6500kW, and the saturated vapor of steelmaking converter and heater for rolling steel can generate electricity 4125kW, and blast furnace gas can generate electricity 5050kW, and total can generate electricity 15675kW.3 waste heat recovery stations need arrange 3 generating main buildings and circulation water station, operation maintenance personnel 63 people.
As can be seen from upper analysis, this programme generating capacity improves 13% than existing mode, and take up an area and investment saving more than 40%, operation maintenance personnel reduce 62%.This programme is by after waste heat focus utilization in addition, decreases invar iron process fault in production and the time of shutting down, improves the utilization rate of generating equipment.

Claims (42)

1. a residual heat and energy comprehensive utilization TRT, this device comprises: generator (1), for driving the steam turbine (2) of generator (1), heater for rolling steel drum (3), steelmaking converter steam accumulator (4), sintering smoke exhaust pipe waste heat boiler (5), central cooler waste heat boiler (6) and there is the overheated boiler of saturated vapor (8) of superheater, the wherein high parameter saturated vapor output channel (L2) of heater for rolling steel drum (3), the high parameter saturated vapor output channel (L3) of steelmaking converter storage heater (4), the high parameter saturated vapor output channel (L4) of sintering smoke exhaust pipe waste heat boiler (5) is connected to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8) respectively, superheated steam outlet (80702) of the overheated boiler of saturated vapor (8) is connected to the main air intake (201) of steam turbine (2) through vapours main pipeline (L1), the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6) is also connected to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8), the rotating shaft (202) of steam turbine (2) connects or drives the rotating shaft of generator (1), and, optionally, low parameter superheated steam outlet (60402) of central cooler waste heat boiler (6) is connected to the filling mouth (204) of steam turbine.
2. a residual heat and energy comprehensive utilization TRT, this device comprises: generator (1), for driving the steam turbine (2) of generator (1), heater for rolling steel drum (3), steelmaking converter steam accumulator (4), sintering smoke exhaust pipe waste heat boiler (5), central cooler waste heat boiler (6), external type overheating device (17) set near central cooler waste heat boiler (6) and there is the overheated boiler of saturated vapor (8) of superheater, wherein: the high parameter saturated vapor output channel (L2) of heater for rolling steel drum (3), the high parameter saturated vapor output channel (L3) of steelmaking converter storage heater (4) and the high parameter saturated vapor output channel (L4) of sintering smoke exhaust pipe waste heat boiler (5) are connected to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8) respectively, superheated steam outlet (80702) of the overheated boiler of saturated vapor (8) is connected to the main air intake (201) of steam turbine (2) through vapours main pipeline (L1a), the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6) is connected to the steam inlet (170101) of the high parameter superheater (1701) of external type overheating device (17), and the steam (vapor) outlet (170102) of this high parameter superheater (1701) is connected to the main air intake (201) of steam turbine (2) by superheated steam secondary duct (i.e. central cooler waste heat boiler superheat steam pipeline) (L1b), the rotating shaft (202) of steam turbine (2) connects or drives the rotating shaft of generator (1), and, optionally, low parameter superheated steam outlet (60402) of central cooler waste heat boiler (6) is connected to the filling mouth (204) of steam turbine, with, optionally, separate from superheated steam secondary duct (i.e. central cooler waste heat boiler superheat steam pipeline) (L1b) the saturated vapor entrance (80601) that a superheated steam branch road (L1c) is connected to the overheated boiler of saturated vapor (8).
3. a residual heat and energy comprehensive utilization TRT, this device comprises: generator (1), for driving the steam turbine (2) of generator (1), heater for rolling steel drum (3), steelmaking converter steam accumulator (4), sintering smoke exhaust pipe waste heat boiler (5), there is the central cooler waste heat boiler (6a) of built-in high parameter superheater (610) and there is the overheated boiler of saturated vapor (8) of superheater, wherein: the high parameter saturated vapor output channel (L2) of heater for rolling steel drum (3), the high parameter saturated vapor output channel (L3) of steelmaking converter storage heater (4) and the high parameter saturated vapor output channel (L4) of sintering smoke exhaust pipe waste heat boiler (5) are connected to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8) respectively, superheated steam outlet (80702) of the overheated boiler of saturated vapor (8) is connected to the main air intake (201) of steam turbine (2) through vapours main pipeline (L1a), the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6a) is connected to the steam inlet (61001) of the high parameter superheater (610) in central cooler waste heat boiler (6), and in central cooler waste heat boiler, the steam (vapor) outlet (61002) of high parameter superheater (610) is connected to the main air intake (201) of steam turbine (2) by superheated steam secondary duct (i.e. central cooler waste heat boiler superheat steam pipeline) (L1b), the rotating shaft (202) of steam turbine (2) connects or drives the rotating shaft of generator (1), and, optionally, low parameter superheated steam outlet (60402) of central cooler waste heat boiler (6) is connected to the filling mouth (204) of steam turbine, with, optionally, separate from superheated steam secondary duct (i.e. central cooler waste heat boiler superheat steam pipeline) (L1b) the saturated vapor entrance (80601) that a superheated steam branch road (L1c) is connected to the overheated boiler of saturated vapor (8).
4. according to the device in claim 1-3 described in any one, wherein saturated vapor heating boiler (8) has the configuration of " π " shape or " П " shape, wherein the side of " π " shape or " П " shape or right side set gradually saturated vapor heating boiler burner (801) from top to bottom, the saturated vapor low temperature superheater (806) of saturated vapor heating boiler, the saturated vapor high temperature superheater (807) of saturated vapor heating boiler, and the opposite side of " π " shape or " П " shape or left side set gradually the evaporimeter (804) of saturated vapor heating boiler and the economizer (805) of saturated vapor heating boiler from top to bottom, and the top platform of " π " shape or " П " shape is the passage of combustion product gases, the left and right sides is by the combustion product gases channel connection in top platform portion.
5. according to a kind of device in claim 1-4 described in any one, it is characterized in that: be also provided with saturated vapor heating boiler drum (803) in saturated vapor heating boiler (8) outside, from the saturated vapor pipeline (L5) that this saturated vapor heating boiler drum (803) is drawn, the i.e. saturated vapor pipeline (L5) of the overheated boiler of saturated vapor (8), is also connected to the steam inlet (80601) of the saturated vapor low temperature superheater (806) being positioned at the overheated boiler of saturated vapor (8).
6. device according to claim 5, wherein, the hot water outlet (80502) of saturated vapor heating boiler economizer (805) is connected to first entrance (80301) of saturated vapor heating boiler drum (803) by pipeline (L6), first outlet (80302) of saturated vapor heating boiler drum (803) is connected to the entrance (80401) of saturated vapor heating boiler evaporimeter (804) by pipeline (L7), the outlet (80402) of saturated vapor heating boiler evaporimeter (804) is connected to second entrance (80303) of saturated vapor heating boiler drum (803) by pipeline (L8), from the saturated vapor pipeline (L5) that the second outlet (80304) of saturated vapor heating boiler drum (803) is drawn, the i.e. saturated vapor pipeline (L5) of the overheated boiler of saturated vapor (8), also the entrance (80601) of the saturated vapor low temperature superheater (806) being positioned at the overheated boiler of saturated vapor (8) is connected to.
7. according to the device in claim 4-6 described in any one, it is characterized in that saturated vapor heating boiler (8) also comprises: the saturated vapor heating boiler outlet bellows or the fan housing (808) that are positioned at the cigarette airflow downstream of the economizer (805) of saturated vapor heating boiler (8), outlet bellows or the fan housing (808) of saturated vapor heating boiler (8) are connected with air-introduced machine (12), and/or, be positioned at the saturated vapor heating boiler attemperator (802) between saturated vapor heating boiler saturated vapor low temperature superheater (806) and saturated vapor heating boiler saturated vapor high temperature superheater (807).
8. according to the device in claim 1-7 described in any one, wherein this device also comprises condenser (15), and the steam drain (203) of steam turbine is connected to condenser (15).
9. according to the device in claim 1-8 described in any one, wherein the high parameter saturated vapor output channel (L4) of the high parameter saturated vapor output channel (L2) of heater for rolling steel drum (3), the high parameter saturated vapor output channel (L3) of steelmaking converter storage heater (4) and sintering smoke exhaust pipe waste heat boiler (5) is connected to the saturated vapor entrance (80601) of the overheated boiler of saturated vapor (8) after merging, and/or
The steam (vapor) outlet (902) of steelmaking converter drum (9) is connected with the steam inlet (401) of steelmaking converter steam accumulator (4) by steelmaking converter drum saturated vapor pipeline (L11).
10. the device according to any one of claim 1-9, is characterized in that: be provided with economizer (501), evaporimeter (502) be provided at an outer portion with sintering smoke exhaust pipe waste heat boiler drum (503) in sintering smoke exhaust pipe waste heat boiler (5).
11. devices according to claim 10, it is characterized in that: this device is provided with (first) water pump (7), (the first) outlet of water pump (7) is connected to the water inlet (50101) of the economizer (501) of sintering smoke exhaust pipe waste heat boiler (5) by the first water supply branch road (701), the outlet (50102) of economizer (501) is connected to first entrance (50301) of the drum (503) of sintering smoke exhaust pipe waste heat boiler (5), first outlet (50302) of drum (503) is connected with the entrance (50201) of evaporimeter (502), the outlet (50202) of evaporimeter (502) is connected with second entrance (50303) of drum (503), second outlet of drum (503) and high parameter steam (vapor) outlet (50304) are connected to the steam inlet (80601) of the saturated vapor low temperature superheater (806) in the overheated boiler of saturated vapor (8) by saturated vapor pipeline (L4), preferably, the outlet bellows (505) sintering smoke exhaust pipe waste heat boiler (5) are connected with air-introduced machine (12), preferably, the entrance fan housing (504) of this sintering smoke exhaust pipe waste heat boiler (5) connects sintering device flue gas conveyance conduit (506).
12., according to the device in claim 1-11 described in any one, is characterized in that: this device also comprises condenser (15), and the steam drain (203) of steam turbine is connected to condenser (15); And/or, be provided with condensation water heater (601), low parameter evaporimeter (602), low parameter superheater (604), high parameter economizer (605) and high parameter evaporimeter (606) in central cooler waste heat boiler (6) and be provided at an outer portion with central cooler waste heat boiler low parameter drum (603) and central cooler waste heat boiler high parameter drum (607).
13. devices according to claim 12, is characterized in that: also have oxygen-eliminating device (19) to be connected with central cooler waste heat boiler low parameter drum (603); water conveyance conduit (18) or be connected to the entrance (60101) of the condensation water heater (601) of central cooler waste heat boiler (6) from the condensate water carrier pipe (1603 or 18) that the delivery port of condenser (3) is drawn, the outlet (60102) of condensation water heater (601) is connected with the water inlet of oxygen-eliminating device (19), the delivery port of oxygen-eliminating device (19) is connected with first entrance (60301) of the low parameter drum (603) of central cooler waste heat boiler (6), first outlet (60302) of low parameter drum (603) is connected with the entrance (60201) of central cooler waste heat boiler low parameter evaporimeter (602), the outlet (60202) of low parameter evaporimeter (602) is connected with second entrance (60303) of low parameter drum (603), second outlet (60304) of central cooler waste heat boiler low parameter drum (603) is connected with the entrance (60401) of low parameter superheater (604), the outlet (60402) of low parameter superheater (604) is connected with the filling mouth (204) of steam turbine (2) by low parameter superheat steam pipeline (L10).
14. devices according to claim 12 or 13, it is characterized in that: also have the conveyance conduit (L12) of central cooler flue gas (612) to be connected to the smoke inlet end (609) of central cooler waste heat boiler (6), be connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) of central cooler waste heat boiler (6) with the outlet of water pump (7), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the main air intake (201) of steam turbine (2) by saturated vapor pipeline (L9), preferably, the outlet bellows (608) of central cooler waste heat boiler (6) are connected with air-introduced machine (14).
15. devices according to claim 12 or 13, it is characterized in that: the outlet of (first) water pump (7) is connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) of central cooler waste heat boiler (6), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the steam inlet (170101) of the high parameter superheater (1701) of external type overheating device (17) by saturated vapor pipeline (L9), the steam (vapor) outlet (170102) of external superheater (1701) is connected to the primary air inlet (201) of steam turbine (2) by superheated steam secondary duct (L1b), preferably, the outlet bellows (608) of central cooler waste heat boiler (6) are connected with air-introduced machine (14).
16. devices according to claim 15, it is characterized in that: also have the conveyance conduit (L12a) of central cooler high-temperature flue gas (612a) to be connected with the smoke inlet end of external type overheating device (17), the smoke outlet of external type overheating device (17) is connected with the smoke inlet end (609) of central cooler waste heat boiler (6) by superheater flue (L13); With, in central cooler waste heat boiler, the conveyance conduit (L12b) of warm flue gas and/or low-temperature flue gas (612b) is connected to the smoke inlet end (609) of central cooler waste heat boiler (6).
17. according to the device in claim 3-11 described in any one, it is characterized in that: be provided with condensation water heater (601), low parameter evaporimeter (602), low parameter superheater (604), high parameter economizer (605), high parameter evaporimeter (606) and high parameter superheater (610) in the central cooler waste heat boiler (6a) with built-in high parameter superheater (610), and be provided at an outer portion with central cooler waste heat boiler low parameter drum (603) and central cooler waste heat boiler high parameter drum (607).
18. devices according to claim 17, it is characterized in that: also have the conveyance conduit (L12a) of central cooler high-temperature flue gas (612a) to be connected to the smoke inlet end (609) of the central cooler waste heat boiler (6a) with built-in high parameter superheater (610), in central cooler waste heat boiler, the conveyance conduit (L12b) of warm flue gas and/or low-temperature flue gas (612b) is connected to second smoke inlet (609a) [the latter is in the below of built-in high parameter superheater (610)] of central cooler waste heat boiler (6a), be connected with central cooler waste heat boiler low parameter drum (603) with also having oxygen-eliminating device (19), water conveyance conduit (18) or be connected to the entrance (60101) of the condensation water heater (601) of central cooler waste heat boiler (6a) from the condensate water carrier pipe (1603 or 18) that the delivery port of condenser (15) is drawn, the outlet (60102) of condensation water heater (601) is connected with the water inlet of oxygen-eliminating device (19), the delivery port of oxygen-eliminating device (19) is connected with first entrance (60301) of the low parameter drum (603) of central cooler waste heat boiler (6a), first outlet (60302) of low parameter drum (603) is connected with the entrance (60201) of central cooler waste heat boiler low parameter evaporimeter (602), the outlet (60202) of low parameter evaporimeter (602) is connected with second entrance (60303) of low parameter drum (603), second outlet (60304) of central cooler waste heat boiler low parameter drum (603) is connected with the entrance (60401) of low parameter superheater (604), the outlet (60402) of low parameter superheater (604) is connected with the filling mouth (204) of steam turbine (2) by low parameter superheat steam pipeline (L10).
19. devices according to claim 17 or 18, it is characterized in that: the outlet of (first) water pump (7) is connected by the entrance (60501) of the second water supply branch road (702) with the high parameter economizer (605) in the central cooler waste heat boiler (6a) with built-in high parameter superheater (610), the outlet (60502) of high parameter economizer (605) is connected with first entrance (60701) of central cooler waste heat boiler high parameter drum (607), first outlet (60702) of high parameter drum (607) is connected with the entrance (60601) of central cooler waste heat boiler high parameter evaporimeter (606), the outlet (60602) of high parameter evaporimeter (606) is connected with second entrance (60703) of high parameter drum (607), second outlet of central cooler waste heat boiler high parameter drum (607) and high parameter steam (vapor) outlet (60704) are connected to the steam inlet (61001) of built-in high parameter superheater (610) by saturated vapor pipeline (L9), the steam (vapor) outlet (61002) of high parameter superheater (610) connects the primary air inlet (201) of steam turbine (2) by superheated steam secondary duct (L1b), preferably, the outlet bellows (608) of built-in superheater central cooler waste heat boiler (6a) are connected with air-introduced machine (14).
20. devices according to any one of claim 1-19, it is characterized in that: the rotating shaft (202) of steam turbine (2) connects or drives the rotating shaft of generator (1), and the steam drain (203) of steam turbine is connected with condenser (15); Preferably, the condensate water efferent duct (1603) of condenser (15) is connected to the condensate water carrier pipe (18) of central cooler waste heat boiler (6).
21. devices according to any one of claim 12-20, it is characterized in that: the low parameter drum (603) of central cooler waste heat boiler (6) has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
22. devices according to any one of claim 17-20, it is characterized in that: the low parameter drum (603) with the central cooler waste heat boiler (6a) of built-in superheater (610) also has the 3rd outlet (60305) and the latter is connected to the water inlet of water pump (7), and the delivery port of water pump (7) is divided into above-described two water supply branch roads i.e. the first water supply branch road (701) and the second water supply branch road (702).
The method of the method for 23. 1 kinds of residual heat and energy comprehensive utilization generatings or the use device generating according to any one of claim 1-22, the method comprises: by the high parameter saturated vapor output channel (L2) of heater for rolling steel drum (3), the high parameter saturated vapor output channel (L3) of steelmaking converter storage heater (4), four bursts of saturated steam flowings (preferably after converging) that the high parameter saturated vapor output channel (L4) of sintering smoke exhaust pipe waste heat boiler (5) and the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6) are carried are undertaken overheated by the superheater in the overheated boiler of saturated vapor (8) and produce high parameter superheated steam, produced high parameter superheated steam is inputted the main air intake of steam turbine (2) through vapours main pipeline (L1), with, optionally, the filling mouth of low parameter superheated steam input steam turbine (2) produced by the low parameter superheater (604) of central cooler waste heat boiler (6), to allow steam turbine (2) drive generator (1) to generate electricity.
The method of the method for 24. 1 kinds of residual heat and energy comprehensive utilization generatings or the use device generating according to any one of claim 1-22, the method comprises: by the high parameter saturated vapor output channel (L2) of heater for rolling steel drum (3), the high parameter saturated vapor output channel (L3) of steelmaking converter storage heater (4), three strands of saturated steam flowings that the high parameter saturated vapor output channel (L4) of sintering smoke exhaust pipe waste heat boiler (5) is carried are undertaken overheated by the superheater in the overheated boiler of saturated vapor (8) and produce high parameter superheated steam after converging, produced high parameter superheated steam is inputted the main air intake of steam turbine (2) through vapours main pipeline (L1a), in addition, the saturated steam flowing that the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6) exports is transported in the high parameter superheater (1701) of the external type overheating device (17) of central cooler waste heat boiler (6) and carries out overheated and be then delivered to the main air intake (201) of steam turbine (2) by superheated steam secondary duct and central cooler waste heat boiler superheat steam pipeline (L1b) or be transported to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8), with, optionally, the filling mouth of low parameter superheated steam input steam turbine (2) that the low parameter superheater (604) of central cooler waste heat boiler (6) is produced, to allow steam turbine (2) drive generator (1) to generate electricity.
The method of the method for 25. 1 kinds of residual heat and energy comprehensive utilization generatings or the use device generating according to any one of claim 1-22, the method comprises: by the high parameter saturated vapor output channel (L2) of heater for rolling steel drum (3), the high parameter saturated vapor output channel (L3) of steelmaking converter storage heater (4), three strands of saturated steam flowings that the high parameter saturated vapor output channel (L4) of sintering smoke exhaust pipe waste heat boiler (5) is carried are undertaken overheated by the superheater in the overheated boiler of saturated vapor (8) and produce high parameter superheated steam after converging, produced high parameter superheated steam is inputted the main air intake of steam turbine (2) through vapours main pipeline (L1a), in addition, the saturated steam flowing that the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6) exports is transported in the built-in high parameter superheater (610) of central cooler waste heat boiler (6a) and carries out overheated and be then delivered to the main air intake (201) of steam turbine (2) by superheated steam secondary duct (i.e. central cooler waste heat boiler superheat steam pipeline) (L1b) or be transported to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8), with, optionally, the filling mouth of low parameter superheated steam input steam turbine (2) that the low parameter superheater (604) of central cooler waste heat boiler (6) is produced, to allow steam turbine (2) drive generator (1) to generate electricity.
26. according to the method in claim 23-25 described in any one, wherein: the steam discharge of steam turbine (2) enters in condenser (15) and forms condensate water, this condensate water returns each workshop or this condensate water and to be transferred via water conveyance conduit (18) and successively by the condensation water heater (601) of central cooler waste heat boiler (6), low parameter evaporimeter (602), low parameter drum (603), low parameter superheater (604) and produce low parameter superheated steam and be delivered to the filling mouth (204) of steam turbine (2) via the low parameter superheat steam pipeline (L10) of central cooler waste heat boiler (6), and/or
The steam discharge of steam turbine (2) enters in condenser (15) and forms condensate water, this condensate water returns each workshop or this condensate water and to be transferred via water conveyance conduit (18) and successively by having the condensation water heater (601) of the central cooler waste heat boiler (6a) of built-in high parameter superheater (610), low parameter evaporimeter (602), low parameter drum (603), low parameter superheater (604) and produce low parameter superheated steam and be delivered to the filling mouth (204) of steam turbine (2) via the low parameter superheat steam pipeline (L10) of central cooler waste heat boiler (6).
27. according to the method in claim 23-26 described in any one, wherein: the steam discharge of steam turbine (2) enters in condenser (15) and forms condensate water, this condensate water returns to each workshop or this condensate water carries out deoxygenation by being transported in oxygen-eliminating device (19) after condensation water heater (601) heating of central cooler waste heat boiler (6), from oxygen-eliminating device (19), discharge the water of deoxygenation and input in the low parameter drum (603) of central cooler waste heat boiler (6), the water of discharging from the first outlet (60302) of low parameter drum (603) is transported to the low parameter evaporimeter (602) of central cooler waste heat boiler (6), the steam of discharging from low parameter evaporimeter (602) returns in low parameter drum (603), the steam of discharging from the second outlet (60304) of low parameter drum (603) is transfused to low parameter superheater (604), the low parameter superheated steam of discharging from low parameter superheater (604) is transported to the filling mouth (204) of steam turbine (2) by low parameter superheat steam pipeline (L10), and/or
The steam discharge of steam turbine (2) enters in condenser (15) and forms condensate water, this condensate water returns each workshop or this condensate water and carries out deoxygenation by being transported in oxygen-eliminating device (19) after condensation water heater (601) heating with the central cooler waste heat boiler (6a) of built-in high parameter superheater (610), from oxygen-eliminating device (19), discharge the water of deoxygenation and input in the low parameter drum (603) of central cooler waste heat boiler (6), the water of discharging from the first outlet (60302) of low parameter drum (603) is transported to the low parameter evaporimeter (602) of central cooler waste heat boiler (6), the steam of discharging from low parameter evaporimeter (602) returns in low parameter drum (603), the steam of discharging from the second outlet (60304) of low parameter drum (603) is transfused to low parameter superheater (604), the low parameter superheated steam of discharging from low parameter superheater (604) is transported to the filling mouth (204) of steam turbine (2) by low parameter superheat steam pipeline (L10).
28. methods according to any one of claim 23-27, it is characterized in that: (first) pump of the water conservancy in low parameter drum (603) (7) passes through the economizer (501) of sintering smoke exhaust pipe waste heat boiler (5) successively via the first water supply branch road (701) conveying water, sintering smoke exhaust pipe afterheat boiler evaporator (502), sintering smoke exhaust pipe waste heat boiler drum (503) and produce high parameter saturated vapor and high parameter saturated vapor output channel (L4) via sintering smoke exhaust pipe waste heat boiler (5) is delivered to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8).
29. methods according to any one of claim 23-27, it is characterized in that: (first) pump of the water conservancy in low parameter drum (603) (7) is conducted through the economizer (501) of sintering smoke exhaust pipe waste heat boiler (5) via the first water supply branch road (701), the water of discharging from economizer (501) is transported in sintering smoke exhaust pipe waste heat boiler drum (503), the hot water of discharging from sintering smoke exhaust pipe waste heat boiler drum (503) is further by sintering smoke exhaust pipe afterheat boiler evaporator (502), the high parameter steam of discharging from evaporimeter (502) returns in sintering smoke exhaust pipe waste heat boiler drum (503) again, the high parameter steam of discharging from drum (503) is transported to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8) via the high parameter saturated vapor output channel (L4) sintering smoke exhaust pipe waste heat boiler (5).
30. methods according to any one of claim 23-29, it is characterized in that: (first) pump of the water conservancy in low parameter drum (603) (7) is transferred successively by the high parameter economizer (605) of central cooler waste heat boiler (6) via the second water supply branch road (702), high parameter evaporimeter (606), high parameter drum (607) produces high parameter saturated vapor, and the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8) is delivered to via the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6).
31. methods according to any one of claim 23-29, it is characterized in that: (first) pump of the water conservancy in low parameter drum (603) (7) is transferred successively by the high parameter economizer (605) of central cooler waste heat boiler (6) via the second water supply branch road (702), high parameter evaporimeter (606), high parameter drum (607) produces high parameter saturated vapor, and the steam inlet (170101) of the high parameter superheater (1701) of external type overheating device (17) was delivered to via the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6), heat further through external type overheating device (17), superheated steam through heating is further delivered to the primary air inlet (201) of steam turbine (2) through vapours secondary duct (L1b) or is delivered to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8) through vapours branch road (L1c).
32. methods according to any one of claim 23-29, it is characterized in that: (first) pump of the water conservancy in low parameter drum (603) (7) is transferred successively by having the high parameter economizer (605) of the central cooler waste heat boiler (6a) of built-in superheater (610) via the second water supply branch road (702), high parameter evaporimeter (606), high parameter drum (607) produces high parameter saturated vapor, and the entrance (61001) of superheater (610) is delivered to via the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6), heat further through built-in superheater (610), superheated steam through heating is further delivered to the primary air inlet (201) of steam turbine (2) through vapours secondary duct (L1b) or is delivered to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8) through vapours branch road (L1c).
33. methods according to any one of any one of claim 23-30, it is characterized in that: (first) pump of the water conservancy in low parameter drum (603) (7) is transferred the high parameter economizer (605) by central cooler waste heat boiler (6) via the second water supply branch road (702), the water of discharging from high parameter economizer (605) is via in first entrance (60701) input high parameter drum (607) of high parameter drum (607), the hot water of discharging from the first outlet (60702) of high parameter drum (607) is also again returned in high parameter drum (607) by high parameter evaporimeter (606) heating and produces high parameter saturated vapor, then the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8) is delivered to via the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6).
34. according to claim 23-29, method according to any one of any one of 31, it is characterized in that: (first) pump of the water conservancy in low parameter drum (603) (7) is transferred the high parameter economizer (605) of the central cooler waste heat boiler (6) by having external type overheating device (17) via the second water supply branch road (702), the water of discharging from high parameter economizer (605) is via in first entrance (60701) input high parameter drum (607) of high parameter drum (607), the hot water of discharging from the first outlet (60702) of high parameter drum (607) is also again returned in high parameter drum (607) by high parameter evaporimeter (606) heating and produces high parameter saturated vapor, then the steam inlet (170101) of the high parameter superheater (1701) of external type overheating device (17) was delivered to via the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6), heat through high parameter superheater (1701), the superheated steam exported from the steam (vapor) outlet (170102) of high parameter superheater (1701) is delivered to the main air intake (201) of steam turbine (2) through vapours secondary duct (L1b) further or is delivered to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8) further through vapours branch road (L1c).
35. according to claim 23-29, method according to any one of any one of 32, it is characterized in that: (first) pump of the water conservancy in low parameter drum (603) (7) is transferred the high parameter economizer (605) of the central cooler waste heat boiler (6a) by having built-in high parameter superheater (610) via the second water supply branch road (702), the water of discharging from high parameter economizer (605) is via in first entrance (60701) input high parameter drum (607) of high parameter drum (607), the hot water of discharging from the first outlet (60702) of high parameter drum (607) is also again returned in high parameter drum (607) by high parameter evaporimeter (606) heating and produces high parameter saturated vapor, then the high parameter saturated vapor of discharging in high parameter drum (607) is delivered to the entrance (61001) of built-in high parameter superheater (610) via the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6), through built-in high parameter superheater (610) heating, the superheated steam of discharging from the outlet (61002) of high parameter superheater (610) is delivered to the main air intake (201) of steam turbine (2) through vapours secondary duct (L1b) or is delivered to the saturated vapor entrance (80601) of the superheater in the overheated boiler of saturated vapor (8) through vapours branch road (L1c).
36. according to the method in claim 23-35 described in any one, it is characterized in that: central cooler flue gas (612) is delivered to the smoke inlet end (609) of central cooler waste heat boiler (6) via conveyance conduit (L12), then inner with being arranged on this central cooler waste heat boiler (6) successively high parameter evaporimeter (606), high parameter economizer (605), low parameter superheater (604), low parameter evaporimeter (602) and condensation water heater (601) carry out indirect heat exchange, finally discharge from the smoke outlet (608) of central cooler waste heat boiler (6), and/or
Be delivered to the smoke inlet of external type overheating device (17) via conveyance conduit (L12a) from the high-temperature flue gas (612a) of central cooler high-temperature region, the flue gas that external type overheating device (17) is discharged and be transported to the smoke inlet end (609) of central cooler waste heat boiler (6) and form mixed flue gas via external superheater smoke discharging pipe (L13) and middle temperature flue gas and/or low-temperature flue gas conveyance conduit (L12b) from flue gas warm in warm area in central cooler and/or low-temperature space and/or low-temperature flue gas (612b) respectively, the high parameter evaporimeter (606) that this mixed flue gas is inner with being arranged on this central cooler waste heat boiler (6) successively, high parameter economizer (605), low parameter superheater (604), low parameter evaporimeter (602) and condensation water heater (601) carry out indirect heat exchange, finally discharge from the smoke outlet (608) of central cooler waste heat boiler (6),
And/or
The smoke inlet end (609) of central cooler waste heat boiler (6) is delivered to via conveyance conduit (L12a), the high parameter superheater (610) of this flue gas in central cooler waste heat boiler (6a) from the central cooler high-temperature flue gas (612a) of central cooler high-temperature region, in central cooler, warm flue gas and/or low-temperature flue gas (612b) are delivered to second smoke inlet (609a) of central cooler waste heat boiler (6a) via conveyance conduit (L12b) and mix with the high-temperature flue gas after have passed through high parameter superheater (610), the high parameter evaporimeter (606) that this mixed flue gas is inner with being arranged on this central cooler waste heat boiler (6a) successively, high parameter economizer (605), low parameter superheater (604), low parameter evaporimeter (602) and condensation water heater (601) carry out indirect heat exchange, finally discharge from the smoke outlet (608) of central cooler waste heat boiler (6a).
37. according to the method in claim 23-36 described in any one, it is characterized in that: sintering device flue gas (506) delivers in the entrance fan housing (504) of sintering smoke exhaust pipe waste heat boiler (5) via sintering device flue gas conveyance conduit and also carries out indirect heat exchange with the evaporimeter (502) in sintering smoke exhaust pipe waste heat boiler (5) and economizer (501) successively, then discharges from the port of export (505) of sintering smoke exhaust pipe waste heat boiler (5).
38. according to the method in claim 23-37 described in any one, it is characterized in that: the burner (80101) of the burner (801) of coal gas (14) in saturated vapor heating boiler (8) enters combustion chamber (80103) combustion of saturated vapor heating boiler burner (801) and produces high-temperature flue gas, flue gas is upwards successively through supersaturated vapor heating boiler saturated vapor low temperature superheater (806), saturated vapor heating boiler saturated vapor high temperature superheater (807), again successively through supersaturated vapor heating boiler evaporimeter (804), saturated vapor heating boiler economizer (805), extract out finally by air-introduced machine (12).
39., according to the method in claim 23-38 described in any one, is characterized in that: steelmaking converter drum (9) produces the saturated vapor of interruption and is transported in storage heater (7) via steelmaking converter drum saturated vapor pipeline (L11).
40. according to the method in claim 23-39 described in any one, and the steam of wherein discharging from the steam drain (203) of steam turbine (2) enters condenser (3) and forms condensate water; Preferably, the condensate water formed is transported to steel-making and mill or is transported to the water inlet (80501) of economizer (805) of saturated vapor heating boiler (8), as a part for external feedwater (10) or external feedwater (10).
41. methods according to any one of claim 23-40, it is characterized in that: heater for rolling steel drum saturated vapor pipeline (L2), storage heater saturated vapor pipeline (L3), the high parameter saturated vapor output channel (L4) of sintering smoke exhaust pipe waste heat boiler (5), the temperature of each saturated steam flowing in the saturated vapor pipeline (L5) of saturated vapor heating boiler (8) outside drum (803) or the high parameter saturated vapor output channel (L9) of central cooler waste heat boiler (6) is 150-250 DEG C independently of one another, preferred 160-240 DEG C, and/or
The temperature of saturated vapor heating boiler saturated vapor low temperature superheater outlet (80602) place steam is 250-350 DEG C, preferred 260-340 DEG C, and/or
The temperature of saturated vapor heating boiler saturated vapor high temperature superheater outlet (80702) place superheated steam is 360-450 DEG C, preferred 370-440 DEG C, more preferably 380-420 DEG C.
42. methods according to any one of claim 23-41, it is characterized in that: the pressure of the superheated steam that saturated vapor heating boiler (8) or built-in high parameter superheater (610) or external superheater (17) produce is >=0.60MPa, preferably >=1.0MPa, such as pressure is 0.6MPa-2.5MPa, preferred 0.8MPa-2.0MPa, more preferably 1.0MPa-1.8MPa, or its temperature be >=350 DEG C, preferably >=360 DEG C, such as its temperature is 370 DEG C-460 DEG C, preferably 380-450 DEG C, more preferably 390 DEG C-430 DEG C, and/or
The pressure of the low parameter superheated steam that central cooler waste heat boiler low parameter superheater (604) produces is 0.3MPa to 0.6MPa, preferred 0.3MPa to 0.5MPa, or its temperature is 160 DEG C-300 DEG C, preferably 170 DEG C-280 DEG C.
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