CN106382823A - Coupling energy saving device for multiple products of sintering procedure - Google Patents

Coupling energy saving device for multiple products of sintering procedure Download PDF

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Publication number
CN106382823A
CN106382823A CN201610760316.XA CN201610760316A CN106382823A CN 106382823 A CN106382823 A CN 106382823A CN 201610760316 A CN201610760316 A CN 201610760316A CN 106382823 A CN106382823 A CN 106382823A
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CN
China
Prior art keywords
sintering
air
waste heat
heat boiler
machine
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Pending
Application number
CN201610760316.XA
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Chinese (zh)
Inventor
刘怀亮
彭岩
时小宝
张宏
李磊
石海英
陈�峰
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CITIC Heavy Industries Co Ltd
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CITIC Heavy Industries Co Ltd
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Priority to CN201610760316.XA priority Critical patent/CN106382823A/en
Publication of CN106382823A publication Critical patent/CN106382823A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • 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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • 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
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • 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
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • 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
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
    • 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
    • F27D2017/009—Cyclone for separating fines from gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2003/00—Type of treatment of the charge
    • F27M2003/04—Sintering
    • 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
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
    • 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

Abstract

The invention relates to a coupling energy saving device for multiple products of a sintering procedure. The coupling energy saving device comprises a sinter sensible heat efficient furnace cooling use system, a hot air sintering system, a sintering large flue waste heat use system and a power generation system. A comprehensive power generation device which is provided by the invention and makes use of waste heat of the multiple products in the sintering procedure can fully use sensible heat of sinters and waste heat of sintering flue gas in a sintering production process, so that the utilization efficiency is improved, and the service life of waste heat utilization equipment is prolonged; the sensible heat of the high-temperature sinters is used in the efficient furnace cooling system, so that the sinters can be cooled at high quality, and the waste heat utilization efficiency can be substantially improved; and compared with the conventional sinter sensible heat utilization efficiency, the waste heat utilization efficiency is improved by 60 percent or above.

Description

Coupling energy-saving device between a kind of sintering circuit many products
Technical field
The present invention relates to cogeneration utilizes technical field, coupling energy-saving between specifically a kind of sintering circuit many products Device.
Background technology
Steel and iron industry is national economy important foundation industry, and energy-output ratio accounts for the 15% of whole nation industry total energy consumption, is section The key industry that can reduce discharging.In steel manufacture process, the energy consumption of sintering circuit occupies second, and making full use of sintering waste heat is steel The important channel of ferrum energy-conservation.In sintering production process, high temperature sintering ore deposit sensible heat accounts for the 45% of sintering circuit total energy consumption, sinters cigarette Gas sensible heat accounts for the 25% of sintering circuit total energy consumption, and the two is the topmost existence form of sintering waste heat.Traditional sintering waste heat Often excessively pay close attention to the utilization technology of the residual heat resources of single product using technology, emphasis improves single product utilization rate of waste heat, Lack integration the grinding using system of high, medium and low grade residual heat resources Land use systems present in many products to sintering circuit Study carefully, not from sintering circuit whole height unified optimization mono-product species residual-heat utilization technology, cause sintering circuit residual heat resources Significant wastage.In prior art, sintering mine sensible heat is recycled although sintering is greatly improved using the high efficiency furnace formula type of cooling The utilization ratio of ore deposit sensible heat, but sintering obvious heat of smoke is not utilized, there is also 140 DEG C about of low-grade flue gas waste heat Discharge in vain, therefore this technology still suffers from larger energy-saving potential.
According to the many products of sintering circuit high, medium and low grade residual heat resources feature, consider various residual heat resources from whole height Optimum utilization mode and coupling energy-saving technology, to greatest extent reduce sintering circuit energy consumption, to Energy-saving of Iron And Steel Industry reduce discharging and look forward to Industry cost efficiency is significant.
Content of the invention
Waste serious asking for the residual heat resources that mono-product species residual-heat utilization technology in above-mentioned existing sintering circuit exists Topic, the present invention provides coupling energy-saving device between a kind of sintering circuit many products.
For solving above-mentioned technical problem, the technical solution used in the present invention is：
Coupling energy-saving device between a kind of sintering circuit many products, including sintering mine sensible heat high efficiency furnace cold utilization system, hot gas sintering System, sintering large flue bootstrap system and electricity generation system；
Described sintering mine sensible heat high efficiency furnace cold using system include sintering machine, the single roll crusher being arranged on sintering machine afterbody, Take-off valve, chain mat machine, cooling stove, aerator, cyclone dust extractor, waste heat boiler and air-introduced machine, described single roll crusher bottom sets There is take-off valve, take-off valve bottom is connected with chain mat machine one end, the chain mat machine other end connects to cooling stove；The air intake of described aerator Mouthful be connected with air, the air outlet of aerator is connected with the blast cap in cooling stove, cyclone dust extractor air inlet and cool down stove cigarette wind Outlet is connected, and cyclone dust extractor air outlet is connected with waste heat boiler top cigarette wind entrance, and waste heat boiler bottom cigarette wind exports and draws Fans entrance is connected；
Described hot gas sintering system includes being arranged on the air bells cap above sintering machine, and air bells cap is provided with two air inlets, and one Individual air inlet is connected with air-introduced machine outlet, and another air inlet is connected with air, and air bells cap air outlet covers sintering machine upper surface；
Described sintering large flue bootstrap system includes sintering large flue and large flue waste heat boiler, large flue waste heat boiler Using built in version, it is embedded in sintering large flue；
Described electricity generation system is provided with steam turbine and electromotor, and steam turbine is connected by shaft coupling with electromotor, steam turbine import Steam comes from the medium pressure steam of waste heat boiler generation, and the steam that steam turbine is discharged is connected with condenser inlet, condenser Outlet is connected with condensate pump entrance, and condensate pump outlet is connected with gland steam heater entrance, and gland steam heater exports and waste heat Boiler preheater entrance connects, and the outlet of waste heat boiler preheater is connected with oxygen-eliminating device water inlet, oxygen-eliminating device air intake and steam turbine Connect, oxygen-eliminating device outlet is connected with entrance of water-supplying pump, the pump discharge that feeds water is divided into two-way, a road and Economizer of Heat Recovery Boiler entrance Connect, another road is connected with large flue waste heat boiler drum.
Described take-off valve has two-way handoff functionality, and high temperature sintering ore deposit can enter cooling stove cooling by take-off valve.
Described chain mat machine is provided with horizontal bar on carrier bar, can achieve 30 ~ 40 ° of high inclination-angle conveying.
Described cooling stove is provided with revolving top, the feeding chute adjustable speed rotation of revolving top with the junction of chain mat machine Turn.
Described cooling stove includes cooling chamber and the room that prestores, and cooling chamber is heat exchange chamber, and inside is provided with laminates wind wind Cap；Prestore the storage chamber that room is high temperature sintering ore deposit.
Described cyclone dust extractor bottom is provided with water cooling plant.
It is equipped with valve on two air inlets of described air bells cap.
Described air bells cap is respectively arranged at head and the afterbody of sintering machine.
The heat-transfer surface of described large flue waste heat boiler includes being arranged in the heat pipe heat exchanging face of low-temperature zone and is arranged in high temperature The finned tube heat-transfer surface of section, finned tube heat-transfer surface is imported and exported and is equipped with stop valve, finned tube heat-transfer surface internal control tobacco curing gas on pipeline Erosive velocity is 5 ~ 7m/s.
Described large flue waste heat boiler does not set economizer, the deaerated water feeding water as 104 DEG C, produces medium temperature and medium pressure saturation and steams Vapour.
Beneficial effects of the present invention：
Coupling energy-saving device between sintering circuit many products that the present invention provides, can make full use of the sintering in sintering production process Ore deposit sensible heat and sintering fume afterheat, improve utilization ratio, and improve the life-span of waste heat utilization equipment；High temperature sintering ore deposit sensible heat is adopted Use high efficiency furnace cooling system, not only can achieve that sintering deposit high-quality cools down additionally it is possible to utilization rate of waste heat is greatly improved, burn than tradition Knot ore deposit sensible heat utilization efficiency improves more than 60%；The low-grade flue gas waste heat of 140 DEG C about that in stove cooling system, waste heat boiler is discharged Delivered to by air-introduced machine and utilize on sintering machine, replace the air in environment, sinter quality not only can be improved, improve into cooling The sintering deposit temperature of stove, can also reduce in sintering production process 1% ~ 2% fuel consumption；More than flue gas in sintering large flue Press saturated vapor during delivery in hot weather is raw, enter the overheated rear gas-to electricity of waste heat boiler in stove cooling system, can greatly improve more than large flue The utilization ratio of heat and generated energy, improve more than 20% than traditional large flue cogeneration amount；Cyclone dust removal is adopted in stove cooling system Device, can remove the most of dust granules in flue gas, thus being prevented effectively from the abrasion in residual heat boiler for exchanging heat face, improving equipment and using Life-span；Large flue waste heat boiler is embedded in sintering large flue, and adopts heat pipe and finned tube combination type, optimizes flue gas flow rate With heat-transfer surface arrangement form, effectively improve the anti-dust stratification of heat-transfer surface and polishing machine, it is to avoid low-temperature-acid-corrosion, the peace of protection equipment Row for the national games；In electricity generation system, oxygen-eliminating device adopts atmospheric type thermal de-aeration, and oxygen-eliminating device is intake first in waste heat boiler preheater Enter back into oxygen-eliminating device after interior heating, thus the deoxygenation amount of drawing gas can be reduced, improve steam turbine acting ability.
Brief description
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the Local map one of Fig. 1；
Fig. 3 is the Local map two of Fig. 1；
Fig. 4 is sintering large flue bootstrap system structural representation；
Reference：1st, sintering machine, 2, single roll crusher, 3, take-off valve, 4, chain mat machine, 5, revolving top, 6, cooling stove, 7, Vibra feeder, 8, rotary seal valve, 9, cold barrow band, 10, aerator, 11, blast cap, 12, cyclone dust extractor, 13, waste heat pot Stove, 14, air-introduced machine, 15, air bells cap, 16, sintering large flue, 17, large flue waste heat boiler, 17-1, finned tube heat-transfer surface, 17- 2nd, heat pipe heat exchanging face, 18, steam turbine, 19, electromotor, 20, condenser, 21, condensate pump, 22, gland steam heater, 23, deoxygenation Device, 24, feed pump, 25, cooling tower.
Specific embodiment
With reference to specific embodiment, the present invention is further elaborated.
As shown in the figure：Coupling energy-saving device between a kind of sintering circuit many products, including the cold utilization of sintering mine sensible heat high efficiency furnace System, hot gas sintering system, sintering large flue bootstrap system and electricity generation system；The described cold profit of sintering mine sensible heat high efficiency furnace Include sintering machine 1, the single roll crusher 2 being arranged on sintering machine 1 afterbody, take-off valve 3, chain mat machine 4, cooling stove 6, air blast with system Machine 10, cyclone dust extractor 12, waste heat boiler 13 and air-introduced machine 14, described single roll crusher 2 bottom is provided with take-off valve 3, take-off valve 3 Bottom is connected with chain mat machine 4 one end, and chain mat machine 4 other end connects to cooling stove 6；The air inlet of described aerator 10 and big gas phase Even, the air outlet of aerator 10 is connected with the blast cap 11 in cooling stove 6, and cyclone dust extractor 12 air inlet is gone out with cooling stove 6 cigarette wind Mouth is connected, and cyclone dust extractor 12 air outlet is connected with waste heat boiler 13 top cigarette wind entrance, waste heat boiler 13 bottom cigarette wind outlet It is connected with air-introduced machine 14 entrance；Described hot gas sintering system includes being arranged on the air bells cap 15 of sintering machine 1 top, air bells cap 15 It is provided with two air inlets, an air inlet is connected with air-introduced machine 14 outlet, and another air inlet is connected with air, air bells cap 15 Air outlet covers sintering machine 1 upper surface；Described sintering large flue bootstrap system includes sintering large flue 16 and large flue Waste heat boiler 17, large flue waste heat boiler 17 adopts built in version, is embedded in sintering large flue 16；Described electricity generation system sets There are steam turbine 18 and electromotor 19, steam turbine 18 is connected by shaft coupling with electromotor 19, steam turbine 18 inlet steam comes from The medium pressure steam that waste heat boiler 13 produces, the steam that steam turbine 18 is discharged is connected with condenser 20 import, and condenser 20 goes out Mouth is connected with condensate pump 21 entrance, and condensate pump 21 is exported and is connected with gland steam heater 22 entrance, and gland steam heater 22 exports It is connected with waste heat boiler 13 pre-heater inlet, the outlet of waste heat boiler 13 preheater is connected with oxygen-eliminating device 23 water inlet, oxygen-eliminating device 23 Air intake is connected with steam turbine 18, and oxygen-eliminating device 23 outlet is connected with feed pump 24 entrance, and feed pump 24 outlet is divided into two-way, and one Road is connected with waste heat boiler 13 economizer entrance, and another road is connected with large flue waste heat boiler 17 drum.
Described take-off valve 3 has two-way handoff functionality, and high temperature sintering ore deposit can enter cooling stove 6 by take-off valve 3 and cool down； Described chain mat machine 4 is provided with horizontal bar on carrier bar, can achieve 30 ~ 40 ° of high inclination-angle conveying；Described cooling stove 6 and chain mat machine 4 Junction be provided with revolving top 5, the feeding chute adjustable speed rotation of revolving top 5；Described cooling stove 6 includes cold But room and the room that prestores, cooling chamber is heat exchange chamber, and inside is provided with multilamellar air distributor 11；Prestore the storage that room is high temperature sintering ore deposit Chamber；Described cyclone dust extractor 12 bottom is provided with water cooling plant；It is equipped with valve on two air inlets of described air bells cap 15； Described air bells cap 15 is respectively arranged at head and the afterbody of sintering machine 1；The heat-transfer surface of described large flue waste heat boiler includes The heat pipe heat exchanging face 17-1 being arranged in low-temperature zone and the finned tube heat-transfer surface 17-2 being arranged in high temperature section, finned tube heat-transfer surface 17-2 Import and export and be equipped with stop valve on pipeline, finned tube heat-transfer surface 17-2 internal control tobacco curing gas erosive velocity is 5 ~ 7m/s；Described is big Flue-pipe after-heat boiler 17 does not set economizer, the deaerated water feeding water as 104 DEG C, produces medium temperature and medium pressure saturated vapor.
High temperature sintering ore deposit on sintering machine 1, after crushing through single roll crusher 2, enters chain mat machine 4, carrier bar by take-off valve 3 The lifting of high temperature sintering ore deposit is delivered to cooling stove 6 entrance by machine 4, and cooling stove 6 fire door is provided with rotation cloth with chain mat machine 4 junction Device 5, high temperature sintering ore deposit is uniformly arranged in the interior that prestores of cooling stove 6 by revolving top 5, the interior that prestores of cooling stove 6 After the cooling chamber of the cooled stove of high temperature sintering ore deposit 6, by vibra feeder 7 and rotary seal valve 8, send after entering cold barrow band 9 Enter later use system.
In the blast cap 11 that aerator 10 will be delivered to after the air pressurized in environment in cooling stove 6 cooling chamber, enter through blast cap 11 After circulation of qi promoting stream gravity group, with the high temperature sintering ore deposit adverse current fully heat exchange in cooling stove 6 cooling chamber, after heat exchange, high temperature sintering ore deposit is cooled to Less than 150 DEG C, cooling air is heated to 600 DEG C about.600 DEG C about hot-air enter cyclone dust extractor 12, remove heat empty After most dust granules in gas, enter waste heat boiler 13 and carry out heat exchange, waste heat boiler 13 can produce medium temperature and medium pressure Steam, the air themperature after heat exchange is 140 DEG C about, is discharged by air-introduced machine 14.
Described take-off valve 3 has two-way handoff functionality, high temperature sintering ore deposit can by take-off valve 3 enter central cooler cooling or Cooling stove 6 cools down, and improves the running rate of sintered ore cooling system；
The feeding chute of described revolving top 5 can rotate in speed governing, can make sintering deposit in the internal particle size distribution of cooling stove 6 more Plus uniformly；
Described cooling stove 6 includes cooling chamber and the room that prestores, and is provided with blast cap 11, is sintering deposit and cooling medium inside cooling chamber Heat exchange chamber, realize the cooling of high temperature sintering ore deposit；The room that prestores is the storage chamber of high temperature sintering ore deposit, can improve sintering deposit Quality and the stability of cooling stove；
Described cyclone dust extractor 12 can remove the most of dust granules in the hot-air entering waste heat boiler 13, mitigates remaining The abrasion condition of heat boiler 13 heat-transfer surface；
Described waste heat boiler 13 produces the steam of medium temperature and medium pressure parameter；
Described cyclone dust extractor bottom is provided with water cooling plant, can cool down the dust that cleaner unit is collected；
Described hot gas sintering system, including air-introduced machine 14 and air bells cap 15.The air warp of 140 DEG C about of waste heat boiler discharge After air-introduced machine 14 pressurization, connected to air bells cap 15 by smoke wind pipe, the 20 DEG C of air of room temperature in alternative environment, are sintering machine 1 Produce and required combustion air is provided, such that it is able to reduce the fuel consumption of SINTERING PRODUCTION 1% ~ 2%.
Two air inlets are set on described air bells cap 15, an air inlet is connected with air-introduced machine outlet, another air inlet and Air is connected, and air bells cap 15 air outlet covers sintering pallet upper surface.
It is equipped with valve on two air inlets of described air bells cap 15, be capable of the hot blast of reasonable adjusting entrance air bells cap 15 Temperature and flow；
Affiliated air bells cap 15 is respectively arranged at head and the afterbody of sintering machine 1, and the air bells cap 15 of head zone can improve burning The yield rate of knot ore deposit, the air bells cap of tail region can improve sintering deposit temperature, thus improving the cold profit of sintering mine sensible heat high efficiency furnace Efficiency with system；
Sintering large flue bootstrap system, including sintering large flue 16, large flue waste heat boiler 17.Large flue waste heat boiler 17 Be embedded in sintering large flue 16 inside, sintering large flue 16 afterbody high-temperature flue gas successively with large flue waste heat boiler 17 in wing Piece pipe heat-transfer surface 17-1 and heat pipe heat exchanging face 17-2 carries out heat exchange, and heating feedwater presses saturated vapor in producing.
In described large flue waste heat boiler 17, finned tube heat-transfer surface 17-1 has good resistance to elevated temperatures, is arranged in The high temperature section of sintering large flue, heat pipe heat exchanging face 17-2 has higher safety, is arranged in the relative low temperature of sintering large flue Section；
Described finned tube heat-transfer surface 17-2 imports and exports and is equipped with stop valve on pipeline, can be whole when heat-transfer surface occurs leakage Excision, and do not affect the normal operation of large flue waste heat boiler other heat-transfer surface；
It is 5 ~ 7m/s that described finned tube heat-transfer surface 17-2 controls sweep of gases flow velocity, to mitigate pipe surface abrasion, and reduces Dust deposits in pipe surface；
The deaerated water that described large flue waste heat boiler 17 feeds water as 104 DEG C, this does not set economizer in vivo, not only can improve big The steam production of flue-pipe after-heat boiler, and can avoid heat-transfer surface that low-temperature-acid-corrosion, the safe operation of protection equipment occur；
Described large flue waste heat boiler 17 does not set superheater, presses saturated vapor, thereby may be ensured that heat-transfer surface not in only producing There is overheating problem, the safe operation of protection equipment；
It is overheated in waste heat boiler 13 that the saturated vapor that described large flue waste heat boiler 17 produces enters, and produces the mistake of medium temperature and medium pressure Vapourss；
Described electricity generation system, including following equipment：Steam turbine 18, electromotor 19, condenser 20, condensate pump 21, packing add Hot device 22, oxygen-eliminating device 23, feed pump 24 and cooling tower 25.Steam turbine 18 is connected by shaft coupling with electromotor 19, by mechanical energy It is converted into electric energy, the superheated steam that waste heat boiler 13 produces, after steam turbine 18 expansion work, it is changed into low pressure moist steam, enter Condenser 20, the recirculated water indirect heat exchange with cooling tower 25, become condensate, after tentatively heating through gland steam heater 22, enter The preheater entering waste heat boiler 13 is heated to 95 DEG C about, the heating needing in the water inlet entering oxygen-eliminating device 23, oxygen-eliminating device 23 Steam comes from the extraction opening of steam turbine 18, and the water removing peroxide in oxygen-eliminating device 23 is divided into two-way after feed pump 24 pressurization, a road It is connected with waste heat boiler 13 economizer entrance, another road is connected with the drum in large flue waste heat boiler 17.
Described oxygen-eliminating device 23 adopts atmospheric type thermal de-aeration, and oxygen-eliminating device 23 is intake and preheated in waste heat boiler 13 first Enter back into oxygen-eliminating device 23 after heating in device, thus the deoxygenation amount of drawing gas can be reduced, improve the acting ability of steam turbine 18.

Claims (10)

1. between a kind of sintering circuit many products coupling energy-saving device it is characterised in that：Including the cold utilization of sintering mine sensible heat high efficiency furnace System, hot gas sintering system, sintering large flue bootstrap system and electricity generation system；
Described sintering mine sensible heat high efficiency furnace is cold to include sintering machine using system（1）, be arranged on sintering machine（1）Single roller of afterbody breaks Broken machine（2）, take-off valve（3）, chain mat machine（4）, cooling stove（6）, aerator（10）, cyclone dust extractor（12）, waste heat boiler（13） And air-introduced machine（14）, described single roll crusher（2）Bottom is provided with take-off valve（3）, take-off valve（3）Bottom and chain mat machine（4）One end Connect, chain mat machine（4）The other end connects to cooling stove（6）；Described aerator（10）Air inlet be connected with air, aerator （10）Air outlet with cooling stove（6）Interior blast cap（11）It is connected, cyclone dust extractor（12）Air inlet and cooling stove（6）Cigarette wind goes out Mouth is connected, cyclone dust extractor（12）Air outlet and waste heat boiler（13）Top cigarette wind entrance is connected, waste heat boiler（13）Bottom cigarette Wind outlet and air-introduced machine（14）Entrance is connected；
Described hot gas sintering system includes being arranged on sintering machine（1）The air bells cap of top（15）, air bells cap（15）It is provided with two Individual air inlet, an air inlet and air-introduced machine（14）Outlet is connected, and another air inlet is connected with air, air bells cap（15）Air-out Mouth covering sintering machine（1）Upper surface；
Described sintering large flue bootstrap system includes sintering large flue（16）With large flue waste heat boiler（17）, large flue Waste heat boiler（17）Using built in version, it is embedded in sintering large flue（16）Interior；
Described electricity generation system is provided with steam turbine（18）And electromotor（19）, steam turbine（18）With electromotor（19）By shaft coupling Connect, steam turbine（18）Inlet steam comes from waste heat boiler（13）The medium pressure steam producing, steam turbine（18）Discharge Steam and condenser（20）Import connects, condenser（20）Outlet and condensate pump（21）Entrance connects, condensate pump（21）Go out Mouth and gland steam heater（22）Entrance is connected, gland steam heater（22）Outlet and waste heat boiler（13）Pre-heater inlet connects, remaining Heat boiler（13）Preheater outlet and oxygen-eliminating device（23）Water inlet connects, oxygen-eliminating device（23）Air intake and steam turbine（18）Connect, Oxygen-eliminating device（23）Outlet and feed pump（24）Entrance connects, feed pump（24）Outlet is divided into two-way, a road and waste heat boiler （13）The connection of economizer entrance, another road and large flue waste heat boiler（17）Drum connects.
2. between sintering circuit as claimed in claim 1 many products coupling energy-saving device it is characterised in that：Described take-off valve （3）There is two-way handoff functionality, high temperature sintering ore deposit can pass through take-off valve（3）Enter cooling stove（6）Cooling.
3. between sintering circuit as claimed in claim 1 many products coupling energy-saving device it is characterised in that：Described chain mat machine （4）Horizontal bar is provided with carrier bar, can achieve 30 ~ 40 ° of high inclination-angle conveying.
4. between sintering circuit as claimed in claim 1 many products coupling energy-saving device it is characterised in that：Described cooling stove（6） With chain mat machine（4）Junction be provided with revolving top（5）, revolving top（5）Feeding chute adjustable speed rotation.
5. between sintering circuit as claimed in claim 1 many products coupling energy-saving device it is characterised in that：Described cooling stove （6）Include cooling chamber and the room that prestores, cooling chamber is heat exchange chamber, and inside is provided with multilamellar air distributor（11）；Prestore room for height The storage chamber of warm sintering deposit.
6. between sintering circuit as claimed in claim 1 many products coupling energy-saving device it is characterised in that：Described cyclone dust removal Device（12）Bottom is provided with water cooling plant.
7. between sintering circuit as claimed in claim 1 many products coupling energy-saving device it is characterised in that：Described air bells cap（15） Two air inlets on be equipped with valve.
8. between sintering circuit as claimed in claim 1 many products coupling energy-saving device it is characterised in that：Described air bells cap （15）It is respectively arranged at sintering machine（1）Head and afterbody.
9. between sintering circuit as claimed in claim 1 many products coupling energy-saving device it is characterised in that：More than described large flue The heat-transfer surface of heat boiler includes the heat pipe heat exchanging face being arranged in low-temperature zone（17-1）With the finned tube heat-transfer surface being arranged in high temperature section （17-2）, finned tube heat-transfer surface（17-2）Import and export and be equipped with stop valve, finned tube heat-transfer surface on pipeline（17-2）Internal control tobacco curing Gas erosive velocity is 5 ~ 7m/s.
10. between sintering circuit as claimed in claim 1 many products coupling energy-saving device it is characterised in that：Described large flue Waste heat boiler（17）Do not set economizer, the deaerated water feeding water as 104 DEG C, produce medium temperature and medium pressure saturated vapor.
CN201610760316.XA 2016-08-30 2016-08-30 Coupling energy saving device for multiple products of sintering procedure Pending CN106382823A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63241124A (en) * 1987-03-27 1988-10-06 Sumitomo Metal Ind Ltd Method for controlling temperature of circulating gas for sintering
CN103234362A (en) * 2013-04-15 2013-08-07 中信重工机械股份有限公司 Device and process for generating power through efficient recovery of waste heat of sintered ores
CN203259012U (en) * 2013-04-15 2013-10-30 中信重工机械股份有限公司 Furnace type cooling ore charge system capable of efficiently recycling sinter waste heat
CN203602644U (en) * 2013-12-01 2014-05-21 瑞安市阀门一厂 Bell-less top rotary material distributing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63241124A (en) * 1987-03-27 1988-10-06 Sumitomo Metal Ind Ltd Method for controlling temperature of circulating gas for sintering
CN103234362A (en) * 2013-04-15 2013-08-07 中信重工机械股份有限公司 Device and process for generating power through efficient recovery of waste heat of sintered ores
CN203259012U (en) * 2013-04-15 2013-10-30 中信重工机械股份有限公司 Furnace type cooling ore charge system capable of efficiently recycling sinter waste heat
CN203602644U (en) * 2013-12-01 2014-05-21 瑞安市阀门一厂 Bell-less top rotary material distributing device

Non-Patent Citations (1)

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Title
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Application publication date: 20170208