CN106285810B - The apparatus and method that a kind of wet saturated steam is used for sintering waste heat generating - Google Patents
The apparatus and method that a kind of wet saturated steam is used for sintering waste heat generating Download PDFInfo
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- CN106285810B CN106285810B CN201610849557.1A CN201610849557A CN106285810B CN 106285810 B CN106285810 B CN 106285810B CN 201610849557 A CN201610849557 A CN 201610849557A CN 106285810 B CN106285810 B CN 106285810B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/24—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by separately-fired heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
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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
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The apparatus and method that a kind of wet saturated steam is used for sintering waste heat generating, belong to iron and steel enterprise's steam energy-saving equipment and application method technical field.Its technical scheme is：Steam accumulator is connected by pipeline with steam filter, and steam filter is connected with combustion type superheater, and the superheated steam that combustion type superheater is produced is connected by pipeline with gas-distributing cylinder, and gas-distributing cylinder is connected by steam main with double pressure steam turbines.The stable wet saturated steam of steam accumulator output of the present invention, dry saturated steam is conveyed after the steam-water separation of steam filter, dry saturated steam sends into combustion type superheater, it is changed into superheated steam after heated, superheated steam delivers to gas-distributing cylinder by jet chimney, and the waste heat produced with sintering, which is mixed, send double pressure steam turbine actings to generate electricity.The present invention opens the new road generated electricity using the wet saturated steam of iron and steel enterprise, solves sintering waste heat generating and supports to cause the problem of frequent shutdown without conventional boiler, with significant economic benefit and social benefit.
Description
Technical field
The present invention relates to the apparatus and method that a kind of iron and steel enterprise's wet saturated steam is used for sintering waste heat generating, belong to steel
Enterprise's steam energy-saving equipment and application method technical field.
Background technology
At present, a kind of sintering waste heat generating technology, this generating skill are occurred in that in the technology of the sintering waste heat utilization of resources
Art is only relied on cold using the higher double discard heat boiler generation technologies of efficiency, this generating equipment without conventional burning boiler
But sintering mineral aggregate obtains heat.Find in use, the major defect of this generating equipment is the fluctuation of central cooler exhaust gas parameters
Influence to equipment is larger.Due to the supplement without conventional combustion boiler, the flue gas wind-warm syndrome fluctuation of central cooler cooling section front end is logical
Often between 310 DEG C~400 DEG C, in the winter time because the reason such as weather and insulation temperature may be lower, for waste heat boiler and
For steam turbine, Gas Parameters fluctuate widely not only it cannot be guaranteed that the thermal efficiency of boiler and steam turbine reaches design objective, and
And main steam temperature frequent fluctuation directly threatens greatly unit safety operation, while causing unit because sintering circular-cooler thermal source is interrupted
Stove halt turbines frequently are got rid of, frequently start-stop not only causes the loss of economic benefit, and annual utilization hours are typically about 4000
~6000 hours, but also service life of equipment can be shortened.
At the same time, iron and steel enterprise is in smelt production, and steel-making and the generation of hot rolling apparatus for vapour-cooling are substantial amounts of wet
Saturated vapor, the characteristics of this part wet saturated steam has high pressure, big fluctuation and high moisture content.And iron and steel enterprise is produced with low
Press the pressure of steam pipe system general minimum in 0 below .5MPa, relative production is with for low-pressure steam pipe network, and this vaporization is produced
The high moist steam of pressure low-pressure steam pipe network sent into after decompression comprehensively utilized, it is especially rich high in non-heating season section
The discharge of steam of pressure is to noise pollution during among air, causing using energy source inefficient and diffusing.
If the substantial amounts of wet saturated steam that the steel-making and hot rolling apparatus for vapour-cooling that can make iron and steel enterprise are produced is direct
Applied to the sintering waste heat generating without conventional boiler combustion system, sintering waste heat was both broken away from and has frequently got rid of stove because thermal source is unstable and stop
The unfavorable situation of machine, can expeditiously utilize the remaining a large amount of high pressure wet saturated steams of iron and steel enterprise again.
The content of the invention
The technical problems to be solved by the invention be to provide a kind of wet saturated steam be used for sintering waste heat generating device and
Method, this device and method can make the high pressure wet saturated steam warp that iron and steel enterprise's steel-making and hot rolling apparatus for vapour-cooling are produced
Superheated steam is converted into after crossing processing, sintering waste heat generating is directly used in, sintering waste heat generating heat can be not only efficiently solved
Source is unstable or the not enough frequent shutdown problem caused of steam, and substantial amounts of wet saturated steam can be avoided directly to discharge the energy caused again
The problem of source waste and environmental pollution.
Solving the technical scheme of above-mentioned technical problem is：
A kind of wet saturated steam is used for the device of sintering waste heat generating, and it includes steam accumulator, steam filter, combustion gas
The apparatus for vapour-cooling of formula superheater, gas-distributing cylinder, double pressure steam turbines, steel-making and hot rolling passes through jet chimney and steam accumulator
Connection, steam accumulator is connected by pipeline with steam filter, and steam filter is connected with combustion type superheater, combustion type
The superheated steam that superheater is produced is connected by pipeline with gas-distributing cylinder, and gas-distributing cylinder is connected by steam main with double pressure steam turbines.
Above-mentioned wet saturated steam is used for the device of sintering waste heat generating, and it is defeated that the combustion type superheater includes coal gas of converter
Enter pipeline, coke-stove gas input channel, combustion air input channel, superheat steam pipeline, premix gas burner, burning
Room, flue gas superheater, flue, coal gas of converter input channel, coke-stove gas input channel, combustion air input channel respectively with advance
The air inlet of mixing gas burner is connected, and premix gas burner is connected with combustion chamber, the rear portion of combustion chamber and cigarette
Gas superheater is connected, and dry saturated steam pipeline one end is connected with the output channel of steam filter, dry saturated steam pipeline
Heat exchange is carried out into flue gas superheater, one end of superheat steam pipeline is connected with the input channel of sub-cylinder, flue gas overheat
The rear portion of device is connected with flue, and flue is connected with chimney.
Above-mentioned wet saturated steam is used for the device of sintering waste heat generating, the coal gas of converter input of the combustion type superheater
Coal gas of converter fast valve, coke-stove gas fast valve and nitrogen purging joint are respectively mounted in pipeline, coke-stove gas input channel, is helped
Combustion air inlet duct is provided with combustion fan in road, and overheat is provided between superheat steam pipeline and the input channel of sub-cylinder and is steamed
Vapour electric control valve 7 and superheat steam temperature and pressure detecting protection device.
Above-mentioned wet saturated steam is used for the device of sintering waste heat generating, the premixed coal gas combustion of the combustion type superheater
Coke-stove gas burning torch, high-energy igniter, high-energy ignition rod and transmission device, coke-stove gas burning torch and height are installed in burner
Energy fire rod is connected with the worm and gear of transmission device, coke-stove gas burning torch and high-energy ignition rod and premixed gas-fired
The fire hole of device is is slidably matched, and high-energy igniter is connected by high-tension cable with high-energy ignition rod.
Above-mentioned wet saturated steam is used for the device of sintering waste heat generating, the top of the combustion chamber of the combustion type superheater
Ultraviolet flame monitor and fire box temperature and pressure detecting protection are installed, outside in combustion chamber installs mixing blower fan, mixes
The air supply duct and combustion chamber of blower fan are closed, combustion chamber is also connected with nitrogen sparge tube road in stove, and nitrogen is purged in stove
Nitrogen purging fast valve in stove is installed in pipeline.
Above-mentioned wet saturated steam is used to install outside the device of sintering waste heat generating, the flue of the combustion type superheater
Air-introduced machine, the air inducing pipeline of air-introduced machine is connected with flue, and oxygen analyzer device is provided with walling of flue.
Above-mentioned wet saturated steam is used for the device of sintering waste heat generating, the coal gas of converter quick closing valve of the combustion type superheater
Valve, coke-stove gas fast valve, coke-stove gas burning torch, high-energy igniter, high-energy ignition rod, transmission device, ultraviolet flame prison
Visual organ, fire box temperature and pressure detecting protection, oxygen analyzer device, superheat steam temperature and pressure detecting protection are controlled with PLC respectively
Device processed is connected.
Above-mentioned wet saturated steam is used for the device of sintering waste heat generating, and the steam accumulator includes wet saturated steam import
Valve, steam (vapor) outlet non-return valve, storage heater safety valve, level measurement device, automatic drain valve and drainage pipeline, steam filter
Inlet and outlet valve is installed, outlet conduit installs steam pressure gauge, and its bottom sets automatic drain valve, steam accumulator, point
Cylinder is respectively provided with safety valve.
A kind of wet saturated steam of use said apparatus is used for the method for sintering waste heat generating, and it is entered using following steps
OK：
A. the wet saturated steam of substantial amounts of continuous-stable is sent into steam filter by steam accumulator by steam main,
Wet saturated steam carries out steam-water separation through steam filter, and substantial amounts of wet saturated steam is changed into dry saturated steam；
B. dry saturated steam sends into combustion type superheater by steam control valve, is heated by combustion type superheater
Stablize the superheated steam for sending out 1 .5MPa, vapor (steam) temperature >=260 DEG C afterwards；
C. the superheated steam that combustion type superheater is produced sends into the gas-distributing cylinder of sintering waste heat generating by steam main；
D. in sintering circular-cooler heat source fluctuations or interruption, steam pressure and too low temperature parameter, the superheated steam is put into
To double pressure steam turbine actings, it is to avoid steam turbine frequent shutdown accident.
Above-mentioned wet saturated steam is used for the method for sintering waste heat generating, and when double pressure halt turbines, combustion type crosses hot charging
When putting the vapours pressure that detects to make a slip of the tongue higher than 1 .5MPa, stop passing through vapours to double pressure steam turbines, pass through steam pressure regulator valve
Production steam pipe system is sent directly into, when such as steam accumulator pressure continues to rise, diffusion valve is opened to air discharging decompressing certainly；Work as steaming
When vapour storage heater, the maintenance of combustion type superheater stop production, close gas-distributing cylinder and send steam turbine electrically operated valve, opening send low-pressure steam pipe network
Motor-driven valve, superheated steam sends low-pressure steam pipe network outside.
The beneficial effects of the invention are as follows：
The stable wet saturated steam of steam accumulator output of the present invention, wet saturated steam divides by the carbonated drink of steam filter
From rear conveying dry saturated steam, dry saturated steam feeding low-pressure steam combustion type superheater, it is heated after be changed into superheated steam,
Superheated steam delivers to gas-distributing cylinder by jet chimney, and the waste heat produced with sintering, which is mixed, send double pressure steam turbine actings to generate electricity.
The present invention converts a large amount of wet saturated steams made steel and hot rolling is produced stable superheated steam after processing, to burn
Double pressure steam turbines of surplus thermal electric generator group are directly solved because sintering waste heat generating does not have conventional boiler using being generated electricity, both
Combustion apparatus, only by cooling sintering mineral aggregate obtain heat and frequently removal of load shut down unfavorable situation, turn avoid iron and steel enterprise
Wet saturated steam diffuses energy waste and noise pollution, while improving sintering waste heat generating generated energy.
The present invention opens the new road generated electricity using the wet saturated steam of iron and steel enterprise, while solving sintering waste heat generating
Support to cause the problem of frequent shutdown without conventional boiler, with significant economic benefit and social benefit.The present invention, which also has, to be accounted for
Ground is small, instant effect, transform the advantages of easy to implement, operating cost is low, regular job management facilitates, and has very big in steel industry
Application value.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the combustion type superheater structural representation of the present invention.
Marked in figure as follows：Steam accumulator 1, steam filter 2, combustion type superheater 3, gas-distributing cylinder 4, double pressure steamers
Machine 5, combustion fan 6, superheated steam electric control valve 7, premix gas burner 8, combustion chamber 9, flue gas superheater 10, flue
11st, mixing blower fan 12, air-introduced machine 13, coal gas of converter fast valve 14, coke-stove gas fast valve 15, coke-stove gas burning torch 16, height
Can igniter 17, high-energy ignition rod 18, transmission device 19, PLC 20, ultraviolet flame monitor 21, fire box temperature and
Nitrogen purging fast valve in pressure detecting protection 22, oxygen analyzer device 23, superheat steam temperature and pressure detecting protection 24, stove
25th, nitrogen purging joint 26.
Embodiment
The present invention wet saturated steam be used for sintering waste heat generating device include steam accumulator 1, steam filter 2,
Combustion type superheater 3, gas-distributing cylinder 4, double pressure steam turbines 5.
Shown in Fig. 1, iron and steel enterprise's steel-making and hot rolling apparatus for vapour-cooling produce interruption, unstable wet saturated steam, lead to
Cross jet chimney and be conveyed to steam accumulator 1.Steam accumulator 1 makes the unstable wet saturation of interruption according to high pressure accumulation of heat low pressure heat release
Steam, stable wet saturated steam is exported by steam accumulator 1.Wet saturated steam sends into steam filter 2 by pipeline, wet full
With steam after the steam-water separation of steam filter 2, dry saturated steam is conveyed.Dry saturated steam sends into combustion type superheater
3, it is heated after be changed into superheated steam.Superheated steam delivers to gas-distributing cylinder 4 by jet chimney, and the waste heat produced with sintering, which is mixed, to be sent
Double pressure steam turbine 5 actings generate electricity.
Shown in Fig. 1, steam accumulator 1 includes wet saturated steam imported valve, steam (vapor) outlet non-return valve, storage heater safety
Valve, level measurement device, automatic drain valve and drainage pipeline.
Shown in Fig. 1, the inlet and outlet of steam filter 2 installs valve, and outlet conduit installs steam pressure gauge, its bottom
Portion sets automatic drain valve.
Shown in Fig. 1, steam accumulator 1, gas-distributing cylinder 4 are respectively provided with safety valve.
In Fig. 1 show, steam conveying pipe be provided with many places steam trap connection, for putting into operation before system hydrophobic and heating coil.
Combustion type superheater 3 is the nucleus equipment of the present invention.Combustion type superheater 3 includes coal gas of converter input pipe
Road, coke-stove gas input channel, combustion air input channel, superheat steam pipeline, premix gas burner 8, combustion chamber 9,
Flue gas superheater 10, flue 11.
Fig. 2 shows, coal gas of converter input channel, coke-stove gas input channel enter with premix gas burner 8 respectively
Gas port is connected, and coal gas is inputted to premix gas burner 8.Divide in coal gas of converter input channel, coke-stove gas input channel
Other installing converter coal gas fast valve 14, coke-stove gas fast valve 15 and nitrogen purging joint 26.Nitrogen purges joint 26 and nitrogen
Scavenging pipeline is connected, for carrying out nitrogen purging to coal gas of converter input channel, coke-stove gas input channel.
Fig. 2 shows that combustion fan 6 is arranged in combustion air input channel, and combustion air input channel is connected to premixed
The primary air nozzle of gas burner 8, combustion fan 6 is that premix gas burner 8 provides sufficient oxygen, primary air flow it is big
The small rigidity for controlling the flame of premix gas burner 8.
Fig. 2 is shown, coke-stove gas burning torch 16, high-energy igniter 17, high energy point are provided with premix gas burner 8
Lighted torch 18 and transmission device 19.Coke-stove gas burning torch 16 and high-energy ignition rod 18 are connected with the worm and gear of transmission device 19
Connect, worm and gear is driven by motor, the igniting of coke-stove gas burning torch 16 and high-energy ignition rod 18 and premix gas burner 8
Hole is is slidably matched, and high-energy igniter 17 is connected by high-tension cable with high-energy ignition rod 18.High-energy ignition rod 18 is flexible logical
The turbine and worm for crossing transmission device 19 is acted, and high-energy ignition rod 18 can produce high energy electric spark, point in the case where there is electricity
Fire coke-stove gas burning torch 16.High-energy igniter 17 needs external 220V power supplys, possesses scene and teletransmission conversion switch, for high energy
Fire rod 18 premix gas burner 8 into and out of and electric discharge.
Fig. 2 shows that premix gas burner 8 is connected with combustion chamber 9, and outside in combustion chamber 9 installs mixing blower fan
12, mix the air supply duct and combustion chamber of blower fan 12.The cold air of mixing blower fan 12 is connected to combustion chamber 9 as Secondary Air
Mouthful, the amount that Secondary Air is filled into and the time that fills into can control the temperature that combustion chamber 9 is set, the protective effect wanted to equipment lifting.
Fig. 2 shows that the top of combustion chamber 9 is provided with ultraviolet flame monitor 21 and fire box temperature and pressure detecting protection
22.Ultraviolet flame monitor 21 includes ultraviolet probe, controller, flame of the ultraviolet flame monitor 21 to fuel such as coal gas
Detect susceptibility preferably, its range of sensitivity is 2000~3000 A, and substantial amounts of ultraviolet spoke is especially produced in combustion
Penetrate, sensitivity and accuracy rate are high, need to install 4 sets.Combustion chamber 9 is also connected with nitrogen sparge tube road in stove, and nitrogen is purged in stove
Nitrogen purging fast valve 25 in stove is installed, for carrying out nitrogen purging to combustion chamber 9 in pipeline.
Fig. 2 shows that the rear portion of combustion chamber 9 is connected with flue gas superheater 10, and dry saturated steam pipeline one end is filtered with steam
The output channel of clean device 2 is connected, and dry saturated steam pipeline enters flue gas superheater 10 and carries out heat exchange, superheat steam pipeline
One end is connected with the input channel of sub-cylinder 4, and overheat is provided between the input channel of superheat steam pipeline and sub-cylinder 4 and is steamed
Vapour electric control valve 7 and superheat steam temperature and pressure detecting protection device 24.Steam filter 2 sends saturated vapor and is connected to cigarette
The heating surface influent header of gas superheater 10, saturated vapor realizes flue gas-steam heat-exchanging in heating surface, reaches steam superheating.
Heating surface uses radiation+convection current combining form, and two sections of heated surface bundles use next part in extended surface tube, in-line arrangement, setting
Case.Superheated steam is connected to the heating surface outlet header of flue gas superheater 10, is sent to superheated steam electric control valve 7 and superheated steam
Burning automatic control regulation is carried out after temperature and pressure protection device 24, feedback signal input PLC 20 and superheated steam is electronic
Regulating valve 7, send gas-distributing cylinder 4, then send double actings of pressure steam turbines 5 to generate electricity, and superheated steam is consistently greater than 260 DEG C.
Fig. 2 shows that the rear portion of flue gas superheater 10 is connected with flue 11, and flue 11 is connected with chimney.Outside flue 11
Air-introduced machine 13 is installed in portion, and the air inducing pipeline of air-introduced machine 13 is connected with flue 11, and oxygen analyzer device 23 is provided with walling of flue.Combustion
After burning the high-temperature flue gas burnt room 9 by steam heating surface, temperature is reduced to about 220 DEG C, by air-introduced machine 13 to combustion chamber the last 9
System ventilation, flue gas is transported to chimney side by side to air.Smoke regulating valve is set on smokejack, the negative pressure for stablizing combustion chamber 9 is transported
OK.
Fig. 2 shows, coal gas of converter fast valve 14, coke-stove gas fast valve 15, the coke-stove gas point of combustion type superheater 3
Firelock 16, high-energy igniter 17, high-energy ignition rod 18, transmission device 19, ultraviolet flame monitor 21, fire box temperature and pressure
Detection protection 22, oxygen analyzer device 23, superheat steam temperature and pressure detecting protection 24 are connected with PLC 20 respectively.
It is coal gas of converter Combustion System in stove that fire box temperature and pressure detecting protection 22, superheat steam temperature and pressure detecting, which protect 24,
The core condition of PLC 20, PLC 20 uses the oxygen analyzer of three impules regulation, control coal gas of converter and flue gas
Device 23, finally realizes the control to superheated steam outlet temperature.
Coal gas of converter fast valve 14, coke-stove gas fast valve 15, coke-stove gas burning torch 16, high energy point in said structure
Firearm 17, high-energy ignition rod 18, transmission device 19, PLC 20, ultraviolet flame monitor 21, nitrogen purging is fast in stove
Close valve 23 and the composition coal gas automatic ignition of PLC 20 and blowout protection system.
The wet saturated steam of the use said apparatus of the present invention is used for the method for sintering waste heat generating, and it uses following steps
Carry out：
A. the wet saturated steam of substantial amounts of continuous-stable is sent into steam filter 2 by steam accumulator 1 by steam main,
Wet saturated steam carries out steam-water separation through steam filter 2, and substantial amounts of wet saturated steam is changed into dry saturated steam；
B. dry saturated steam is heated by steam control valve feeding combustion type superheater 3 by combustion type superheater 3
Stablize the superheated steam for sending out 1.5MPa, vapor (steam) temperature >=260 DEG C afterwards；
C. the superheated steam that combustion type superheater 3 is produced sends into the gas-distributing cylinder of sintering waste heat generating by steam main
4；
D. in sintering circular-cooler heat source fluctuations or interruption, steam pressure and too low temperature parameter, the superheated steam is put into
Done work to double pressure steam turbines 5, it is to avoid steam turbine frequent shutdown accident.
In the above-mentioned methods, when double pressure steam turbines 5 are shut down, combustion type superheater 3 detects vapours pressure of making a slip of the tongue
During higher than 1 .5MPa, stop passing through vapours to double pressure steam turbines 5, production steam pipe system be sent directly into by steam pressure regulator valve,
When continuing to rise such as the pressure of steam accumulator 1, diffusion valve is opened to air discharging decompressing certainly；When steam accumulator 1, combustion type are overheated
When the maintenance of device 3 stops production, close gas-distributing cylinder 4 and send steam turbine electrically operated valve, opening is sent outside low-pressure steam pipe network motor-driven valve, superheated steam
Send low-pressure steam pipe network.
The running of combustion type superheater 3 of the present invention is as follows：
(1) manual focus producer gas pipeline and converter gas pipeline carry out nitrogen purging, and examine qualified, coke-stove gas
Fast valve 15 and the Close All of coal gas of converter fast valve 14.
(2) nitrogen purging fast valve 24 in stove is opened, inflated with nitrogen is replaced into stove, when the oxygen analyzer device 23 of flue 11 is examined
Measure after nitrogen is qualified in stove, close nitrogen purging fast valve 24, stop burner hearth and carry out nitrogen purging.
(3) combustion fan 6 starts, and air-introduced machine 13 starts, the regulating valve standard-sized sheet of air-introduced machine 13 and combustion fan 6, purging 3
After~5 minutes, discharge stove in mixed gas, when the oxygen analyzer device 23 of flue 11 is detected nitrogen is qualified in stove after, air inducing
The regulating valve of machine 13 and combustion fan 6 closes 10%~50% aperture to valve.
(4) turbine and worm of transmission device 19 under the promotion of motor by coke-stove gas burning torch 16 and high-energy ignition rod 18
In synchronous push-in premix gas burner 8, and the about 200mm or so of premix gas burner 8 is stretched out, combustion fan 6
Regulating valve is turned down to 10~20%.
(5) high-energy igniter 17 is connected to after the instruction of PLC 20, is conveyed by high-tension cable to high-energy ignition rod 18
Lasting pulse current, and lasting electric spark is produced with coke-stove gas burning torch 16, coke-stove gas fast valve 15 is automatically opened up.
(6) coke-stove gas is sent to coke-stove gas burning torch 16 by coke-stove gas fast valve 15, when running into lasting electric spark
Coke-stove gas is lighted, 4 sets of UV flame monitors 21 such as monitor flame in 10 seconds, then high-energy ignition rod 18 is in transmission device
Under the drive of 19 turbine and worms, automatically exit from, light a fire successfully.UV flame monitor 21 is monitored less than flame in such as 10 seconds,
PLC 20 sends instruction, closes coke-stove gas fast valve 15, while high-energy ignition rod 18 and coke-stove gas burning torch 16 are certainly
It is dynamic to exit, loss of ignition.
(7) after coal gas of converter fast valve 14 is opened, coal gas of converter regulating valve is gradually opened, and coal gas of converter is in premixed coal
Air burner 8 is exported, and is lighted by the naked light of coke-stove gas burning torch 16.The regulating valve section door of combustion fan 6 is gradually opened greatly, stable
Gradually open within 3~5 minutes to track with coal gas of converter regulating valve tandem greatly and adjust.If 4 sets of ultraviolet flame prison devices 21 have signal,
Coal gas of converter is put into successfully.
(8) big coal gas of converter regulating valve and the regulating valve of combustion fan 6 are progressively opened.Keep a close eye on low-pressure steam combustion type
The outlet superheat vapor (steam) temperature of superheater 3, superheat steam temperature is more than after 260 DEG C, locks highest coal gas of converter air inflow, as
The coal gas of converter consumption upper limit.
(9) when the fire box temperature of combustion chamber 9 is more than 400 DEG C, the signal input PLC of fire box temperature and pressure protective device 23
Controller 20, starts mixing blower fan 12 and puts into operation, and the controllable register of mixing blower fan 12 and the controllable register of air-introduced machine 13 are gradually
Open, through fire box temperature and pressure protective device 23, controllable register with the temperature adjustment aperture of combustion chamber 9, in holding furnace negative pressure and
Temperature adjustment.
(10) so far start-up course is completed.Whenever combustion chamber 9 is put out a fire therebetween, i.e., 4 ultraviolet flame monitors 21
No signal, start-up course is immediately finished, chain closing coal gas of converter fast valve 14 and coke-stove gas fast valve 15.
(11) steam filter 2 sends saturated vapor and is connected to the influent header of flue gas superheater 10, and saturated vapor is in flue gas mistake
The radiation through flue gas and heat convection, make saturated vapor reach overheat in hot device 10.It is sent to superheated steam electric control valve 7 and mistake
Burning automatic control regulation superheated steam is carried out after vapours temperature and pressure protection device 24, feedback signal input PLC 20
Electric control valve 7, makes to send the superheated steam of gas-distributing cylinder 4 to be consistently greater than 260 DEG C.
Claims (9)
1. a kind of wet saturated steam is used for the device of sintering waste heat generating, it includes steam accumulator（1）, steam filter（2）、
Gas-distributing cylinder（4）, double pressure steam turbines（5）, make steel and the apparatus for vapour-cooling of hot rolling pass through jet chimney and steam accumulator（1）Even
Connect, steam accumulator（1）Pass through pipeline and steam filter（2）It is connected, it is characterised in that：It also has combustion type superheater
（3）, steam filter（2）With combustion type superheater（3）Connection, combustion type superheater（3）The superheated steam of generation passes through
Pipeline and gas-distributing cylinder（4）It is connected, gas-distributing cylinder（4）Pass through steam main and double pressure steam turbines（5）Connection；Combustion type superheater
（3）Including coal gas of converter input channel, coke-stove gas input channel, combustion air input channel, superheat steam pipeline, premixed
Gas burner（8）, combustion chamber（9）, flue gas superheater（10）, flue（11）, coal gas of converter input channel, coke-stove gas input
Pipeline, combustion air input channel respectively with premix gas burner（8）Air inlet be connected, premix gas burner
（8）With combustion chamber（9）It is connected, combustion chamber（9）Rear portion and flue gas superheater（10）It is connected, dry saturated steam pipeline one end
With steam filter（2）Output channel be connected, dry saturated steam pipeline enter flue gas superheater（10）Carry out heat exchange, mistake
One end of vapours pipeline and gas-distributing cylinder（4）Input channel be connected, flue gas superheater（10）Rear portion and flue（11）Phase
Connection, flue（11）It is connected with chimney.
2. wet saturated steam according to claim 1 is used for the device of sintering waste heat generating, it is characterised in that：The combustion gas
Formula superheater（3）Coal gas of converter input channel, be respectively mounted coal gas of converter fast valve in coke-stove gas input channel（14）、
Coke-stove gas fast valve（15）Joint is purged with nitrogen（26）, combustion fan is installed in combustion air input channel（6）, overheat
Jet chimney and gas-distributing cylinder（4）Input channel between superheated steam electric control valve is installed（7）With superheat steam temperature and
Pressure detecting protection device（24）.
3. wet saturated steam according to claim 2 is used for the device of sintering waste heat generating, it is characterised in that：The combustion gas
Formula superheater（3）Premix gas burner（8）On coke-stove gas burning torch is installed（16）, high-energy igniter（17）、
High-energy ignition rod（18）And transmission device（19）, coke-stove gas burning torch（16）With high-energy ignition rod（18）With transmission device（19）
Worm and gear be connected, coke-stove gas burning torch（16）With high-energy ignition rod（18）With premix gas burner（8）Point
Fire hole is is slidably matched, high-energy igniter（17）Pass through high-tension cable and high-energy ignition rod（18）It is connected.
4. wet saturated steam according to claim 3 is used for the device of sintering waste heat generating, it is characterised in that：The combustion gas
Formula superheater（3）Combustion chamber（9）Top ultraviolet flame monitor is installed（21）With fire box temperature and pressure detecting
Protection（22）, in combustion chamber（9）Outside mixing blower fan is installed（12）, mix blower fan（12）Air supply duct and combustion chamber（9）
It is connected, combustion chamber（9）Also it is connected with nitrogen sparge tube road in stove, nitrogen purging in stove is installed in stove in nitrogen sparge tube road
Fast valve（25）.
5. wet saturated steam according to claim 4 is used for the device of sintering waste heat generating, it is characterised in that：The combustion gas
Formula superheater（3）Flue outside install air-introduced machine（13）, air-introduced machine（13）Air inducing pipeline and flue（11）It is connected, cigarette
Oxygen analyzer device is installed on road wall（23）.
6. wet saturated steam according to claim 5 is used for the device of sintering waste heat generating, it is characterised in that：The combustion gas
The coal gas of converter fast valve of formula superheater（14）, coke-stove gas fast valve（15）, coke-stove gas burning torch（16）, high-energy ignition
Device（17）, high-energy ignition rod（18）, transmission device（19）, ultraviolet flame monitor（21）, fire box temperature and pressure detecting protect
Shield（22）, oxygen analyzer device（23）, superheat steam temperature and pressure detecting protection device（24）Respectively with PLC（20）Phase
Connection.
7. wet saturated steam according to claim 6 is used for the device of sintering waste heat generating, it is characterised in that：The steam
Storage heater（1）Including wet saturated steam imported valve, steam (vapor) outlet non-return valve, storage heater safety valve, level measurement device, automatic
Draining valve and drainage pipeline, steam filter（2）Inlet and outlet install valve, outlet conduit install steam pressure gauge, its
Bottom sets automatic drain valve, steam accumulator（1）, gas-distributing cylinder（4）It is respectively provided with safety valve.
8. a kind of usage right requires that any one wet saturated steam of 1-7 is used for the wet saturated steam of the device of sintering waste heat generating
Method for sintering waste heat generating, it is characterised in that：It is carried out using following steps：
A. steam accumulator（1）The wet saturated steam of substantial amounts of continuous-stable is sent into steam filter by steam main（2）,
Wet saturated steam is through steam filter（2）Steam-water separation is carried out, substantial amounts of wet saturated steam is changed into dry saturated steam；
B. dry saturated steam sends into combustion type superheater by steam control valve（3）, by combustion type superheater（3）Heating
Stablize the superheated steam for sending out 1 .5MPa, vapor (steam) temperature >=260 DEG C afterwards；
C. combustion type superheater（3）The superheated steam of generation sends into the gas-distributing cylinder of sintering waste heat generating by steam main（4）；
D put into the superheated steam to double in sintering circular-cooler heat source fluctuations or interruption, steam pressure and too low temperature parameter
Press steam turbine（5）Acting, it is to avoid steam turbine frequent shutdown accident.
9. wet saturated steam according to claim 8 is used for the method for sintering waste heat generating, it is characterised in that：When double pressure vapour
Turbine（5）During shutdown, combustion type superheater（3）When detecting to make a slip of the tongue vapours pressure higher than 1 .5MPa, stop to double pressure vapour
Turbine（5）Vapours is passed through, production steam pipe system, such as steam accumulator are sent directly into by steam pressure regulator valve（1）Pressure continues
During rising, diffusion valve is opened to air discharging decompressing certainly；Work as steam accumulator（1）, combustion type superheater（3）When maintenance stops production,
Close gas-distributing cylinder（4）Steam turbine electrically operated valve is sent, opening send low-pressure steam pipe network motor-driven valve, and superheated steam sends low pressure steam pipe outside
Net.
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| CN101245911A (en) * | 2007-02-12 | 2008-08-20 | 中冶京诚工程技术有限公司 | Gas type steam superheating device |
| CN101672578A (en) * | 2009-10-30 | 2010-03-17 | 中冶长天国际工程有限责任公司 | Power generation system using waste heat of sintering circular cooler |
| DE102010050090A1 (en) * | 2010-10-29 | 2012-05-03 | Linde Aktiengesellschaft | Steam system comprises low pressure degasser for degassing feed water, low pressure steam rail, whose operating pressure is at second pressure level, and high pressure steam rail, whose operating pressure is at third pressure level |
| CN102410740B (en) * | 2011-11-08 | 2013-06-12 | 大连易世达新能源发展股份有限公司 | Waste heat power generation device capable of obtaining waste gas in multistage from sintering machine and cooling machine in steel plant |
| CN104153832B (en) * | 2014-08-13 | 2016-06-01 | 昆明钢铁集团有限责任公司 | A kind of iron and steel enterprise's complementary energy synthesis efficient electric power generation method and power generation system thereof |
| CN206092091U (en) * | 2016-09-26 | 2017-04-12 | 邯钢集团邯宝钢铁有限公司 | Wet saturated steam is used for device of sintering cogeneration |
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