CN106091710B - Sintering circular-cooler waste gas residual heat comprehensive reutilization system - Google Patents
Sintering circular-cooler waste gas residual heat comprehensive reutilization system Download PDFInfo
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- CN106091710B CN106091710B CN201610517039.XA CN201610517039A CN106091710B CN 106091710 B CN106091710 B CN 106091710B CN 201610517039 A CN201610517039 A CN 201610517039A CN 106091710 B CN106091710 B CN 106091710B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- 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
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention discloses a kind of sintering circular-cooler waste gas residual heat comprehensive reutilization system, including smoke circulating system；Smoke circulating system includes being arranged on exhaust fume collecting hood above ring cold machine routine waste heat recovery section, chimney, conventional takes wind pipeline, waste heat boiler, circulating fan and ring cold machine return air duct；Exhaust-heat boiler flue gas entrance and exhanst gas outlet take wind pipeline and ring cold machine return air duct to connect with conventional respectively, the flue of waste heat boiler is provided with superheater, evaporator, high pressure section economizer, the second condensation water heater, low pressure stage economizer and the first condensation water heater, and drum is provided with outside the flue of waste heat boiler；Wherein, the water inlet of low pressure stage economizer is connected with the water outlet of UTILIZATION OF VESIDUAL HEAT IN unit, and the venthole of superheater is connected with the air intake of UTILIZATION OF VESIDUAL HEAT IN unit；The entery and delivery port of first condensation water heater and the second condensation water heater is in parallel with the low-pressure heater of generating set respectively.The present invention improves the utilization rate of sintering circular-cooler waste gas residual heat.
Description
Technical field
The present invention relates to the field of energy-saving technology of steel industry more particularly to a kind of sintering circular-cooler waste gas residual heat to integrate back
It receives and utilizes system.
Background technology
In each process of steel production, sintering circuit is big power consumer, and energy consumption is only second to Iron-smelting.Sintered ring
Cold is the postprocessing device of sintering process, for the temperature of sinter to be cooled under 150 DEG C.The high temperature of ring cold machine gives up
Gas is a valuable residual heat resources, by taking the ring cold machine of conventional 198m2 sintering machines configuration as an example, only one section of high-temp waste gas of ring cold machine
The flow of (temperature is about 350~450 DEG C) is as high as 200,000 Nm3/h, if the waste gas residual heat of ring cold machine can be made full use of, can receive
Obtain considerable economic benefit.
At present, wind pipeline mainly taken using ring cold machine for the Land use systems of ring cold machine waste gas residual heat, waste heat boiler, followed
Ring wind turbine, ring cold machine return air duct form the form of cycle, i.e., by the way that wind pipeline is taken to send the high-temp waste gas of ring cold machine to waste heat
Boiler exchanges heat, and the low-temperature flue gas of waste heat boiler discharge enters circulating fan, is returned after being pressurizeed by circulating fan by ring cold machine
Wind pipeline returns to ring cold machine.The program can generate considerable economic benefit, and since exhaust gas realizes closed cycle, effectively keep away
Problem of environmental pollution caused by having exempted from granular material discharged in exhaust gas, therefore it has become the ring cold machine waste heat of current most mainstream and has returned
Debit's formula, but the program still has larger deficiency：First, heat boiler outlet smoke temperature is still up to 150 DEG C or so, compared with
High return air temperature can adversely affect the operation of ring cold machine：The higher operation ring for leading to ring cold machine of ring cold machine cooling wind temperature
The problems such as border deteriorates, and static and dynamic sealing is caused to be easily damaged, and accelerates ring cold machine frame deformation, and ring cold machine couples position weld cracking；
Secondly as the cooling air quantity of ring cold machine is very big, the exhaust gas that 150 DEG C or so of heat boiler outlet contains huge sensible heat money
Source, which still has very big use value, if being directly back to ring cold machine in the usual way, although can improve
Ring cold machine high temperature section flue-gas temperature is contributed so as to improve waste heat boiler to a certain extent, but there are still larger energy waves
Take.
Therefore, a kind of scheme that can make full use of ring cold machine residual heat resources is built, it is made not only can further to recycle
The low temperature exhaust heat of ring cold machine exhaust gas, and the return air temperature of ring cold machine can be reduced, improve the service condition of ring cold machine, there will be weight
The realistic meaning wanted.
Invention content
In view of the above-mentioned problems, the present invention provides a kind of sintering circular-cooler waste gas residual heat of abundant recycling sintering circular-cooler waste heat
Comprehensive reutilization system
In order to achieve the above objectives, sintering circular-cooler waste gas residual heat comprehensive reutilization system of the present invention, including flue gas recirculation
System；The smoke circulating system includes being arranged on exhaust fume collecting hood above ring cold machine routine waste heat recovery section, is arranged on exhaust fume collecting hood
The high temperature stacks of top, the routine connected with the high temperature stacks take wind pipeline and waste heat boiler；Wherein, the waste heat boiler
Smoke inlet and exhanst gas outlet take the conventional waste heat recovery section of wind pipeline and ring cold machine to connect with conventional respectively, the waste heat boiler
Flue in along flow of flue gas direction be disposed with superheater, evaporator, high pressure section economizer, the second condensation water heater,
Low pressure stage economizer and the first condensation water heater, the flue of the waste heat boiler are provided with drum outside；Low pressure stage economizer goes out
Between the mouth of a river and high pressure section economizer water inlet oxygen-eliminating device and feed pump are disposed with along water (flow) direction；
Wherein, the water inlet of the low pressure stage economizer is connected with the water outlet of UTILIZATION OF VESIDUAL HEAT IN unit, and the low pressure stage saves
The water outlet of coal device is connected with the water inlet of the oxygen-eliminating device, and the water outlet of the oxygen-eliminating device and the water inlet of the feed pump connect
Logical, the water outlet of the feed pump is connected with the water inlet of the high pressure section economizer, the water outlet of the high pressure section economizer
It is connected with the water inlet of the drum, the water outlet of the drum is connected by down-comer with the water inlet of the evaporator, institute
The venthole for stating evaporator is connected by tedge with the air intake of the drum, the air intake of the superheater and the drum
Venthole connection, the venthole of the superheater connects with the air intake of the UTILIZATION OF VESIDUAL HEAT IN unit；
First condensation water heater and the second condensation water heater are low in the therrmodynamic system of generating set respectively
Pressure heater is connected in parallel.
Further, the therrmodynamic system of the generating set include by the sequentially connected generating set steam turbine of pipeline,
Generation Unit Condenser, generating set axle envelope heater, generating set first order low-pressure heater and the generating set second level are low
Heater is pressed, wherein, the air intake of the Generation Unit Condenser is connected with the steam drain of generating set steam turbine；For connecting
Generating set condensate pump is provided on the pipeline of Generation Unit Condenser and generating set axle envelope heater；
The water inlet of first condensation water heater is connected with the water outlet of the generating set axle envelope heater, described
The water outlet of first condensation water heater is divided into water inlet of the two-way respectively with second condensation water heater and connects and generate electricity
The water outlet connection of unit first order low-pressure heater, the water outlet of second condensation water heater and the generating set the
The water outlet connection of two level low-pressure heater.
Further, the therrmodynamic system of the UTILIZATION OF VESIDUAL HEAT IN unit is included through the sequentially connected UTILIZATION OF VESIDUAL HEAT IN unit of pipeline
Steam turbine, UTILIZATION OF VESIDUAL HEAT IN unit condenser and UTILIZATION OF VESIDUAL HEAT IN unit gland heater；For connecting UTILIZATION OF VESIDUAL HEAT IN unit condenser
UTILIZATION OF VESIDUAL HEAT IN unit condensate pump is provided with on the pipeline of UTILIZATION OF VESIDUAL HEAT IN unit gland heater；
The venthole of the superheater is connected with the air intake of the UTILIZATION OF VESIDUAL HEAT IN power generator turbine；The low pressure stage saves coal
The water inlet of device is connected with the water outlet of UTILIZATION OF VESIDUAL HEAT IN unit gland heater.
Further, the routine takes the direction of wind pipeline upper edge flow of flue gas to be disposed with hot precipitator and afterburning
Stove.
Further, the unconventional waste heat recovery section of ring cold machine low temperature on be provided with gas gathering mask, set on the gas gathering mask
There is low temperature chimney；The low temperature chimney takes wind pipeline and the air intake of the afterburning stove to connect by low temperature, the afterburning stove
Gas entry connected with gas piping；The low temperature, which takes, is provided with cold precipitator on wind pipeline.
Further, the routine takes wind pipeline arrival end to be provided with the first cigarette air valve；It is set on the high temperature stacks
Have the second cigarette air valve, the routine take wind pipeline and the second cigarette air valve according to flue gas flow direction successively with high temperature stacks
Connection.
Further, the exhanst gas outlet of the waste heat boiler is connected by discharge duct with the air inlet of circulating fan, institute
The air outlet for stating circulating fan is connected by ring cold machine return air duct with the ring cold machine routine waste heat recovery section, the ring cold machine
Diffusing chimney and third cigarette air valve are provided on return air duct, the 4th cigarette air valve is provided on the diffusing chimney.
Further, the two-way water outlet of the water inlet of first condensation water heater, first condensation water heater
Pipeline, the water outlet of the second condensation water heater, the generating set first order low-pressure heater and the generating set second level are low
The outlet and inlet of pressure heater is both provided with control valve.
Further, the routine takes and first flowmeter is provided on wind pipeline, and the low temperature takes and is provided on wind pipeline
Second flowmeter, the smoke inlet of the waste heat boiler are provided with third flowmeter.
Further, the low temperature chimney breast is provided with the 5th cigarette air valve, and the low temperature takes the entrance of wind pipeline to set
It is equipped with the 6th cigarette air valve.
The present invention comprehensively utilizes the waste gas residual heat of sintering circular-cooler, passes through the optimization of waste heat boiler internal exchanger
Setting, rationally utilizes waste gas residual heat, is sequentially arranged superheater along flue gas flow in waste heat boiler Internal Flue, steams
Send out device, high pressure section economizer, the second condensation water heater, low pressure stage economizer and the first condensation water heater, wherein superheater
The steam of generation enters UTILIZATION OF VESIDUAL HEAT IN power generator turbine, the acting of red switch steam turbine as main steam, which is either used for
Driving generator still can generate considerable economic benefit for Driving Fan；Second condensation water heater and the first condensation water
Heater is used for heating the condensation water in power station generator group Steam Turbine Regenerative System, can reduce the backheat of Steam Turbine Regenerative System
Steam extraction amount, and the regenerative steam saved can continue to do work in generating set steam turbine, increase the generated energy of generating set.
The present invention realizes the cascade utilization of heat energy from waste gas, waste heat pot by the optimization design of waste heat boiler internal exchanger
Heating surface at different levels is according to the height rational deployment of flue-gas temperature, superheater, evaporator, high pressure section economizer, the second condensation in stove
The temperature of heat transferring medium (water or steam) reduces successively in water heater, low pressure stage economizer and the first condensation water- to-water heat exchanger, root
Each heating surface is laid out according to the grade sequence of energy, high-grade heat energy from waste gas is absorbed by high-grade medium,
The effective rate of utilization of thermal energy is improved, realizes science energy.In addition, the present invention is solidifying by the first condensation water heater and second
The setting of heat exchanger is born water, further absorbs waste gas residual heat using the low-temperature condensate of power station generator group, is further reduced
Exhaust gas temperature improves the thermal efficiency of waste heat boiler.
Second condensation water heater of the invention is arranged between waste heat boiler high pressure section economizer and low pressure stage economizer, by
In the inflow temperature of the second condensation water heater be about 70 DEG C, between high pressure section economizer inflow temperature (104 DEG C or more) and
Between the inflow temperature (30 DEG C or so) of low pressure stage economizer, the setting of the second condensation water heater can ensure heat transfer effect
The heat exchange of system is reduced under the premise of (ensureing certain heat transfer temperature difference)Damage improves the energy recovery utilization rate of system.
The present invention reduces the return air temperature of ring cold machine by the rational deployment of waste heat boiler internal exchanger, and traditional
The method that heat boiler outlet flue gas is directly back to ring cold machine compares the cooling effect for improving ring cold machine high temperature section so that ring is cold
The operating condition of machine is more nearly design conditions, reduces since the setting of air return system exports sinter temperature control to ring cold machine
The adverse effect of system better ensures that the quality of sinter.The present invention is dropped by the rational deployment of waste heat boiler internal exchanger
The low return air temperature of ring cold machine improves the working environment of ring cold machine, can reduce the downtime of ring cold machine, and reduction is set
Standby maintenance cost, improves equipment operation rate.The present invention reduces ring cold machine by the rational deployment of waste heat boiler internal exchanger
Return air temperature, improve the working environment of the circulating fan in the distinguished and admirable journey downstream of cigarette, extend the service life of circulating fan；This
Outside, since temperature reduces, the import flue gas volume of circulating fan also reduces therewith, and then is conducive to the energy saving fortune of circulating fan
Row.
Description of the drawings
Fig. 1 is the flow chart of sintering circular-cooler waste gas residual heat comprehensive reutilization system of the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings of the specification.
Embodiment 1
As shown in Figure 1, sintering circular-cooler waste gas residual heat comprehensive reutilization system, including smoke circulating system；The cigarette
The gas circulatory system includes the height for being arranged on the exhaust fume collecting hood 2 of 1 top of ring cold machine routine waste heat recovery section, being arranged on 2 top of exhaust fume collecting hood
Warm chimney 3, the routine connected with the high temperature stacks 3 take wind pipeline 4 and waste heat boiler 7；Wherein, 7 cigarette of waste heat boiler
Gas entrance and exhanst gas outlet take wind pipeline 4 and ring cold machine return air duct 10 to connect with conventional respectively, the flue of the waste heat boiler 7
It is interior to be disposed with superheater 701, evaporator 702, high pressure section economizer 703, the heating of the second condensation water along flow of flue gas direction
Device 704,705 and first condensation water heater 706 of low pressure stage economizer, the flue of the waste heat boiler 7 are provided with drum outside
707；Between 703 water inlet of 705 water outlet of low pressure stage economizer and high pressure section economizer deoxygenation is disposed with along water (flow) direction
Device 708 and feed pump 709；
Wherein, the water inlet of the low pressure stage economizer 705 is connected with the water outlet of UTILIZATION OF VESIDUAL HEAT IN unit, the low pressure stage
The water outlet of economizer 705 is connected with the water inlet of the oxygen-eliminating device 708, water outlet and the feedwater of the oxygen-eliminating device 708
The water inlet connection of pump 709, the water outlet of the feed pump 709 is connected with the water inlet of the high pressure section economizer 703, described
The water outlet of high pressure section economizer 703 is connected with the water inlet of the drum 707, and the water outlet of the drum 707 passes through decline
Pipe is connected with the water inlet of the evaporator 702, and the venthole of the evaporator 702 passes through tedge and the drum 707
Air intake connects, and the air intake of the superheater 701 is connected with the venthole of the drum 707, and the superheater 701 goes out vapour
Mouth is connected with the air intake of the UTILIZATION OF VESIDUAL HEAT IN unit；
First condensation water heater, 706 and second condensation water heater 704 respectively with the therrmodynamic system of generating set
In low-pressure heater be connected in parallel.
The therrmodynamic system of the generating set is included through the sequentially connected Generation Unit Condenser 14 of pipeline, generating set
Gland heater 16, generating set first order low-pressure heater 17 and generating set second level low-pressure heater 18, wherein, it is described
The air intake of Generation Unit Condenser 14 is connected with the steam drain of generating set steam turbine 12；For connecting Generation Unit Condenser
14 and generating set axle envelope heater 16 pipeline on be provided with generating set condensate pump 15；The generating set steam turbine 12
Output shaft connect with generator 13.
The water inlet of first condensation water heater 706 and the water outlet of the generating set axle envelope heater 16 connect
Logical, the water outlet of first condensation water heater 706 is divided into two-way, wherein all the way with second condensation water heater 704
Water inlet connection, another way connects with 17 water outlet of generating set first order low-pressure heater, and second condensation water heats
The water outlet of device 704 is connected with the water outlet of generating set second level low-pressure heater 18.
The therrmodynamic system of the UTILIZATION OF VESIDUAL HEAT IN unit include by the sequentially connected UTILIZATION OF VESIDUAL HEAT IN power generator turbine 19 of pipeline,
UTILIZATION OF VESIDUAL HEAT IN unit condenser 20 and UTILIZATION OF VESIDUAL HEAT IN unit gland heater 22；For connecting 20 He of UTILIZATION OF VESIDUAL HEAT IN unit condenser
UTILIZATION OF VESIDUAL HEAT IN unit condensate pump 21 is provided on the pipeline of UTILIZATION OF VESIDUAL HEAT IN unit gland heater 22；
The venthole of the superheater 701 is connected with the air intake of the UTILIZATION OF VESIDUAL HEAT IN power generator turbine 19；The low pressure
The water inlet of section economizer 705 is connected with the water outlet of UTILIZATION OF VESIDUAL HEAT IN unit gland heater 22.
The present embodiment comprehensively utilizes the waste gas residual heat of sintering circular-cooler, passes through 7 internal exchanger of waste heat boiler
Optimal design-aside rationally utilizes waste gas residual heat, and overheat is sequentially arranged along flue gas flow in 7 Internal Flue of waste heat boiler
Device 701, evaporator 702, high pressure section economizer 703, the second condensation water heater 704, low pressure stage economizer 705 and first condense
The steam that water heater 706, wherein superheater 701 generate enters UTILIZATION OF VESIDUAL HEAT IN power generator turbine 19, red switch vapour as main steam
Turbine does work, which either still can generate considerable economic benefit for driving generator for Driving Fan；
Second condensation water heater 704 and the first condensation water heater 706 are used for heating 12 heat regenerative system of power station generator group steam turbine
In condensation water, the regenerative steam amount of Steam Turbine Regenerative System can be reduced, and the regenerative steam saved can be in generating set vapour
Continue to do work in turbine, increase the generated energy of generating set.
The present embodiment realizes the cascade utilization of heat energy from waste gas by the optimization design of 7 internal exchanger of waste heat boiler, remaining
According to the height rational deployment of flue-gas temperature, superheater 701, evaporator 702, high pressure section save coal for heating surface at different levels in heat boiler 7
Device 703, the second condensation water heater 704, low pressure stage economizer 705 and first condense heat transferring medium (water or steaming in water- to-water heat exchanger
Vapour) temperature reduce successively, each heating surface is laid out according to the grade sequence of energy, high-grade heat energy from waste gas passes through
High-grade medium absorbs, and improves the effective rate of utilization of thermal energy, realizes science energy.In addition, the present embodiment is by setting
It puts the first condensation water heater 706 and condenses water- to-water heat exchanger 704 with second, inhaled using the low-temperature condensate of power station generator group
Waste gas residual heat is received, further reduces exhaust gas temperature, improves the thermal efficiency of waste heat boiler 7.
The second condensation water heater of the present embodiment 704 is arranged on 7 high pressure section economizer 703 of waste heat boiler and low pressure stage saves coal
Between device 705, since the inflow temperature of the second condensation water heater 704 is about 70 DEG C, between the water inlet of high pressure section economizer 703
Between temperature (104 DEG C or more) and the inflow temperature (30 DEG C or so) of low pressure stage economizer 705, the second condensation water heater 704
Setting can be in the heat exchange for ensureing to reduce system under the premise of heat transfer effect (ensureing certain heat transfer temperature difference)Damage improves system
Energy recovery utilization rate.
The present embodiment reduces the return air temperature of ring cold machine by the rational deployment of 7 internal exchanger of waste heat boiler, with biography
The method that 7 exiting flue gas of waste heat boiler of system is directly back to ring cold machine compares the cooling effect for improving ring cold machine high temperature section, makes
The operating condition for obtaining ring cold machine is more nearly design conditions, reduces since the setting of air return system exports sinter to ring cold machine
Temperature controlled adverse effect better ensures that the quality of sinter.The conjunction that the present embodiment passes through 7 internal exchanger of waste heat boiler
Removing the work office reduces the return air temperature of ring cold machine, improves the working environment of ring cold machine, when can reduce the disorderly closedown of ring cold machine
Between, maintenance of equipment expense is reduced, improves equipment operation rate.The rational deployment that the present embodiment passes through 7 internal exchanger of waste heat boiler
The return air temperature of ring cold machine is reduced, the working environment of the circulating fan 9 in the distinguished and admirable journey downstream of cigarette is improved, extends circulating fan
9 service life；Further, since temperature reduces, the import flue gas volume of circulating fan 9 also reduces, and then be conducive to follow therewith
The energy-saving run of ring wind turbine 9.
There is the water inlet of oxygen-eliminating device 708 and feed pump, wherein oxygen-eliminating device 708 along carbonated drink flow arrangement outside waste heat boiler 7
Mouthful be connected by pipeline with the water side outlet of low pressure stage economizer 705, the water outlet of oxygen-eliminating device 708 after feed pump pressurizes with height
The water side-entrance of pressure section economizer 703 is connected；Feed pump is capable of providing provides certain pressure for waste heat boiler feedwater, ensures vapour
The normal operation of Water flow-path, and oxygen-eliminating device 708 can remove the pernicious gases such as the dissolved oxygen in water removal, avoid waste heat boiler low temperature cigarette
Chimney 32 or other equipment and pipeline are corroded and generate danger.
Embodiment 2
On the basis of above-described embodiment, the routine takes the direction of 4 upper edge flow of flue gas of wind pipeline to be disposed with height
Warm deduster 5 and afterburning stove 6.
Hot precipitator 5 takes the particulate matter brought into wind pipeline 4 from ring cold machine for removing routine；Afterburning stove 6, which is located at, to be removed
Between dirt device and waste heat boiler 7, to adjust the Gas Parameters for entering waste heat boiler 7；
The present embodiment stabilizes the import flue gas condition of waste heat boiler 7, ensure that waste heat pot by the setting of afterburning stove 6
The stabilization of 7 outlet vapor parameter of stove ensure that the safety and stablization operation of UTILIZATION OF VESIDUAL HEAT IN power generator turbine 19.
The present embodiment stabilizes the flue gas condition of waste gas afterheat recovery system, solves tradition by the setting of afterburning stove 6
Method directly recycles the problem of Gas Parameters frequent fluctuation existing for ring cold machine waste gas residual heat, improves the fortune of condensation water heater
Row condition ensure that the stable operation of power station generator group steam turbine 12.
Embodiment 3
On the basis of above-described embodiment, it is provided in the unconventional waste heat recovery section 30 of ring cold machine low temperature of the present embodiment
Gas gathering mask 31 is provided with low temperature chimney 32 on the gas gathering mask 31；The low temperature chimney 32 takes wind pipeline 33 and institute by low temperature
The air intake connection of afterburning stove 6 is stated, the gas entry of the afterburning stove 6 is connected with gas piping；The low temperature takes wind pipeline
Cold precipitator 35 is provided on 33.
The outlet of low temperature chimney 32 is provided with the 5th cigarette air valve 37, and the low temperature takes the entrance of wind pipeline 33 to be provided with
6th cigarette air valve 34.
Sintering circular-cooler waste gas residual heat comprehensive reutilization system of the present invention is by the unconventional waste heat recovery section of ring cold machine low temperature
30 flue gas (temperature is about 200 DEG C or so) is collected and as the combustion air of afterburning stove 6, the combustion air of high temperature can
Ensure that the stablizing for burning, especially low-heat value gas of stablizing of coal gas is burnt, therefore, by the unconventional waste heat recovery of ring cold machine low temperature
30 flue gases of section are conducive to utilization of the afterburning stove 6 to low-heat value gas as combustion air, meanwhile, the stabilization Combustion Energy of afterburning stove 6
Enough ensure that the heat source of waste heat boiler 7 and flue gas-condensation water- to-water heat exchanger is stablized, be conducive to the steady of UTILIZATION OF VESIDUAL HEAT IN unit and generating set
Fixed operation；Low temperature, which takes, is provided with cold precipitator 35 on wind pipeline 33, can remove particle in the flue gas in cryogenic piping and
Dust can avoid particle and dust from generating harm to pipeline and equipment.
Embodiment 4
On the basis of above-described embodiment, the routine takes 4 arrival end of wind pipeline to be provided with the first cigarette air valve 24；It is described
The second cigarette air valve 25 is provided on high temperature stacks 3, the routine takes stream of the 4 and second cigarette air valve 25 of wind pipeline according to flue gas
Dynamic direction is set gradually.
The sintering circular-cooler waste gas residual heat comprehensive reutilization system of the present embodiment, in 7 bringing normally into operation of waste heat boiler
One cigarette air valve 24 is opened the second cigarette air valve 25 and is closed, and in 7 forced shutdown of waste heat boiler, the first cigarette air valve 24 closes the
Two cigarette air valves 25 are opened；Flue gas can be made to pass through waste heat boiler 7 to the greatest extent in 7 normal operation of waste heat boiler in this way
It exchanges heat, and during the failure of waste heat boiler 7, flue gas is made to pass through high temperature stacks 3 and is discharged, does not influence waste heat boiler 7
Maintenance.
Embodiment 5
On the basis of above-described embodiment, the exhanst gas outlet of the waste heat boiler 7 passes through discharge duct 8 and circulating fan 9
Air inlet be connected, the air outlet of the circulating fan 9 passes through ring cold machine return air duct 10 and is returned with the ring cold machine routine waste heat
It receives section 1 to be connected, diffusing chimney 11 and third cigarette air valve 26, the diffusing chimney is provided on the ring cold machine return air duct 10
The 4th cigarette air valve 27 is provided on 11.
Circulating fan 9 in the present embodiment is used for the low temperature waste gas for exporting waste heat boiler 7 and boosts to overcome pipe resistance；
The excessive flue gas of return air duct 10 when the diffusing chimney 11 runs for the Start-up and Adjustment or residual neat recovering system of circulating fan 9
Diffuse adjusting.
The sintering circular-cooler waste gas residual heat comprehensive reutilization system of the present embodiment is equipped on ring cold machine return air duct 10
Third cigarette air valve 26, rise cutting action, the standard-sized sheet when waste heat boiler 7 is run, waste heat boiler 7 due to failure is stopped transport when close
It closes, avoids generating the situation that flue gas pours in down a chimney from ring cold machine in 7 failure of waste heat boiler.4th cigarette is installed on diffusing chimney 11
Air valve 27, for circulating fan 9 Start-up and Adjustment or residual neat recovering system operation when return air duct 10 in exhaust gas volumn adjusting.
Embodiment 6
On the basis of above-described embodiment, water inlet, the first condensation water heater of first condensation water heater 706
706 two-way outlet conduit, the water outlet of the second condensation water heater 704, the generating set first order low-pressure heater 17
Control valve 23 is both provided with the outlet and inlet of generating set second level low-pressure heater 18.
By the adjusting to each 23 aperture of control valve, can adjust solidifying into the second condensation water heater 704 and first
Bear water the condensing water flow of heater 706, it can also be used to realize the second condensation water heater 704 and the first condensation water heater
706 input and off-the-line.
Embodiment 8
On the basis of above-described embodiment, the routine takes and first flowmeter 28 is provided on wind pipeline 4, and the low temperature takes
Second flowmeter 36 is provided on wind pipeline 33, the smoke inlet of the waste heat boiler 7 is provided with third flowmeter 29.It is described remaining
Heat utilization system further includes generator, wind turbine or water pump, the output shaft of the steam turbine and the generator, wind turbine or water pump
Input axis connection.
The routine, which takes, is equipped with first flowmeter 28 on wind pipeline 4, to measure through the conventional high temperature taken in wind pipeline 4
The flow of flue gas；The low temperature, which takes, is provided with second flowmeter 36 on wind pipeline 33, taken on wind pipeline 33 by low temperature with metering
The low-temperature flue gas flow flowed through；7 smoke inlet of waste heat boiler is provided with third flowmeter 29, enters waste heat boiler to measure
7 flue gas flow；Three flowmeters can monitor low temperature in real time and wind pipeline 33, routine is taken to take wind pipeline 4 and boiler smoke entrance
Flue gas flow, in order to subsequent operation and control.The UTILIZATION OF VESIDUAL HEAT IN power generator turbine 19 can be connected with generator, use
It is produced electricl energy in driving generator, can also be connected with wind turbine or water pump, for driving wind turbine or water pump, directly be done
Work(.
More than, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto is any to be familiar with sheet
In the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in should all be covered those skilled in the art
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection domain that claim is defined.
Claims (10)
1. a kind of sintering circular-cooler waste gas residual heat comprehensive reutilization system, it is characterised in that：Including smoke circulating system；It is described
Smoke circulating system includes the high temperature for being arranged on exhaust fume collecting hood above ring cold machine routine waste heat recovery section, being arranged on above exhaust fume collecting hood
Chimney, the routine connected with the high temperature stacks take wind pipeline and waste heat boiler；Wherein, the exhaust-heat boiler flue gas entrance and
Exhanst gas outlet takes the conventional waste heat recovery section of wind pipeline and ring cold machine to connect with conventional respectively, edge in the flue of the waste heat boiler
Flow of flue gas direction is disposed with superheater, evaporator, high pressure section economizer, the second condensation water heater, low pressure stage and saves coal
Device and the first condensation water heater, the flue of the waste heat boiler are provided with drum outside；Low pressure stage economizer water outlet and high pressure
Between section economizer water inlet oxygen-eliminating device and feed pump are disposed with along water (flow) direction；
Wherein, the water inlet of the low pressure stage economizer is connected with the water outlet of UTILIZATION OF VESIDUAL HEAT IN unit, the low pressure stage economizer
Water outlet connected with the water inlet of the oxygen-eliminating device, the water outlet of the oxygen-eliminating device is connected with the water inlet of the feed pump,
The water outlet of the feed pump is connected with the water inlet of the high pressure section economizer, the water outlet of the high pressure section economizer and institute
The water inlet connection of drum is stated, the water outlet of the drum is connected by down-comer with the water inlet of the evaporator, the steaming
The venthole of hair device is connected by tedge with the air intake of the drum, and the air intake of the superheater goes out with the drum
Steam ports connects, and the venthole of the superheater is connected with the air intake of the UTILIZATION OF VESIDUAL HEAT IN unit；
First condensation water heater and the second condensation water heater add respectively with the low pressure in the therrmodynamic system of generating set
Hot device is connected in parallel.
2. sintering circular-cooler waste gas residual heat comprehensive reutilization system as described in claim 1, it is characterised in that：The generator
The therrmodynamic system of group is included through the sequentially connected generating set steam turbine of pipeline, Generation Unit Condenser, generating set axle envelope
Heater, generating set first order low-pressure heater and generating set second level low-pressure heater, wherein, the generating set coagulates
The air intake of vapour device is connected with the steam drain of generating set steam turbine；For connecting Generation Unit Condenser and generating set axle envelope
Generating set condensate pump is provided on the pipeline of heater；
The water inlet of first condensation water heater is connected with the water outlet of the generating set axle envelope heater, and described first
The water outlet of condensation water heater passes through the two-way pipeline water inlet and generating set with second condensation water heater respectively
The water outlet connection of first order low-pressure heater, the water outlet of second condensation water heater and the generating set second level
The water outlet connection of low-pressure heater.
3. sintering circular-cooler waste gas residual heat comprehensive reutilization system as described in claim 1, it is characterised in that：The waste heat profit
With the therrmodynamic system of unit include by the sequentially connected UTILIZATION OF VESIDUAL HEAT IN power generator turbine of pipeline, UTILIZATION OF VESIDUAL HEAT IN unit condenser and
UTILIZATION OF VESIDUAL HEAT IN unit gland heater；For connecting the pipe of UTILIZATION OF VESIDUAL HEAT IN unit condenser and UTILIZATION OF VESIDUAL HEAT IN unit gland heater
UTILIZATION OF VESIDUAL HEAT IN unit condensate pump is provided on road；
The venthole of the superheater is connected with the air intake of the UTILIZATION OF VESIDUAL HEAT IN power generator turbine；The low pressure stage economizer
Water inlet is connected with the water outlet of UTILIZATION OF VESIDUAL HEAT IN unit gland heater.
4. sintering circular-cooler waste gas residual heat comprehensive reutilization system as described in claim 1, it is characterised in that：The routine takes
The direction of wind pipeline upper edge flow of flue gas is disposed with hot precipitator and afterburning stove.
5. sintering circular-cooler waste gas residual heat comprehensive reutilization system as claimed in claim 4, it is characterised in that：Ring cold machine low temperature
Gas gathering mask is provided in unconventional waste heat recovery section, low temperature chimney is provided on the gas gathering mask；The low temperature chimney passes through low
Temperature takes wind pipeline and the air intake of the afterburning stove to connect, and the gas entry of the afterburning stove is connected with gas piping；It is described
Low temperature, which takes, is provided with cold precipitator on wind pipeline.
6. sintering circular-cooler waste gas residual heat comprehensive reutilization system as described in claim 1, it is characterised in that：The routine takes
Wind pipeline arrival end is provided with the first cigarette air valve；The second cigarette air valve is provided on the high temperature stacks, the routine takes wind
Pipeline and the second cigarette air valve are connect according to the flow direction of flue gas with high temperature stacks successively.
7. sintering circular-cooler waste gas residual heat comprehensive reutilization system as described in claim 1, it is characterised in that：The waste heat pot
The exhanst gas outlet of stove is connected by discharge duct with the air inlet of circulating fan, and the air outlet of the circulating fan passes through ring cold machine
Return air duct is connected with the ring cold machine routine waste heat recovery section, and diffusing chimney and are provided on the ring cold machine return air duct
Three cigarette air valves are provided with the 4th cigarette air valve on the diffusing chimney.
8. sintering circular-cooler waste gas residual heat comprehensive reutilization system as claimed in claim 2, it is characterised in that：Described first is solidifying
Bear water the water outlet of the water inlet of heater, the two-way outlet conduit, the second condensation water heater of first condensation water heater
The outlet and inlet of mouth, the generating set first order low-pressure heater and generating set second level low-pressure heater is both provided with
Control valve.
9. sintering circular-cooler waste gas residual heat comprehensive reutilization system as claimed in claim 5, it is characterised in that：The routine takes
First flowmeter is provided on wind pipeline, the low temperature takes and second flowmeter is provided on wind pipeline, the cigarette of the waste heat boiler
Gas entrance is provided with third flowmeter.
10. sintering circular-cooler waste gas residual heat comprehensive reutilization system as claimed in claim 5, it is characterised in that：The low temperature
Chimney breast is provided with the 5th cigarette air valve, and the low temperature takes the entrance of wind pipeline to be provided with the 6th cigarette air valve.
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| CN201610517039.XA CN106091710B (en) | 2016-06-30 | 2016-06-30 | Sintering circular-cooler waste gas residual heat comprehensive reutilization system |
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| CN201610517039.XA CN106091710B (en) | 2016-06-30 | 2016-06-30 | Sintering circular-cooler waste gas residual heat comprehensive reutilization system |
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| CN106091710B true CN106091710B (en) | 2018-07-10 |
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| CN107477603B (en) * | 2017-07-26 | 2019-04-02 | 兖矿鲁南化工有限公司 | A kind of system and method that chemical industry low-pressure tail gas recycles |
| CN109612285B (en) * | 2018-12-05 | 2021-07-16 | 东北大学 | Cold quick-witted waste heat recovery device of ring of variable operating mode grading |
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