CN204824932U - Power generation system is retrieved to high slag integrated treatment and sensible heat - Google Patents
Power generation system is retrieved to high slag integrated treatment and sensible heat Download PDFInfo
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- CN204824932U CN204824932U CN201520514981.1U CN201520514981U CN204824932U CN 204824932 U CN204824932 U CN 204824932U CN 201520514981 U CN201520514981 U CN 201520514981U CN 204824932 U CN204824932 U CN 204824932U
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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
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Abstract
The utility model provides a power generation system is retrieved to high slag integrated treatment and sensible heat belongs to processing of ferrous metallurgy slag and complementary energy and retrieves technical field. This system is including connecing sediment device, lime stone feeder, slag to synthesize processing apparatus, slag charge cooling device, cold slag charge circulation unit, waste heat recovery power generation facility and exhaust purification processing apparatus. Utilizing unique slag to synthesize processing apparatus and carrying out quenching and tempering, modify and make it to be broken into cubic slag charge to high slag earlier, then pass through the cold machine of comb and cool off the production hot waste gas to it, the hot waste gas passes through exhaust -heat boiler production superheated steam, promotes the turbo generator set acting and generates electricity. The utility model discloses solved the sensible heat of high slag effectively and retrieved, on not influencing the follow -up value basis of high slag, can high -efficient, abundant recycle slag high temperature residual heat resources.
Description
Technical field
The utility model belongs to ferrous metallurgy slag treatment and complementary energy recovery technology field, particularly relates to a kind of blast furnace slag comprehensive treating process and Exposure degree power generation system.
Background technology
Iron And Steel Industry is mainstay of the national economy industry, is also the energy and resource-integrated industry.The utilising efficiency improving the energy and resource is the focus of work of Iron And Steel Industry always.In blast furnace ironmaking process, from iron ore, flux and coke that furnace roof adds, liquid phase is become in furnace high-temperature combustion zone, the molten blast furnace slag formed floats over above molten iron, body of heater is discharged by slag-drip opening, the tapping temperature of blast furnace slag is generally between 1400 ~ 1550 DEG C, and slag per ton is containing (1260 ~ 1880) × 10
3the sensible heat of kJ, is equivalent to the calorific value of 60kg standard coal.Under the existing ironmaking technology of China, often produce 1 ton of pig iron by-product, 0.3 ton of blast furnace slag.Within 2014, Chinese pig iron output reaches 7.12 hundred million tons, accounts for 60.4% of Gross World Product, amounts to the blast furnace slag of generation 2.14 hundred million tons, and its sensible heat amount is equivalent to 1,284 ten thousand tons of standard coals, and the benefit reclaiming blast furnace slag waste heat is considerable.
In order to reclaim a large amount of higher-grade waste heats contained in blast furnace slag; abroad just to begin one's study the eighties from eighties of last century and develop dry process blast furnace slag; in the dry granulation method of various countries' research; mainly comprise wind to quench pelletizing technology, rotary drum granulation technique, Merotec method, mechanical stirring pelletizing technology, casting and rolling process, dry-type centrifugal shotting etc., but do not apply with all carrying out industrialization so far.Carried out comprehensive analysis to various dry granulation technique, the technique producing the blast furnace slag particle meeting this kind of high added value of Cement industry comprises: rotary drum shotting, wind are quenched method and dry-type centrifugal shotting.Wherein, the thin slag sheet that rotary drum shotting bonds on rotary drum must scrape off with scraper plate, and this makes the functioning efficiency of equipment lower, is not suitable for processing high-temperature slag in large quantities continuously.The slag slabbing produced, needs follow-up fragmentation could as the raw material of cement, and this can cause extra energy consumption.The wind method of quenching can produce the slag granules of high added value, also has higher slag heat recovery rate.But very large in the consumption of granulating apoplexy mechanomotive force, integrated operation cost is high, and the floor space of whole system is comparatively large, cause Architectural foundation difficult, so this technique does not have the report of later use.And centrifugal granulation method is still in theoretical investigation or small-sized simulated experiment stage, also there is not the technique and method of effective industrialized slag chilling granulation and waste heat recovery.At present, centrifugal granulation method is better in molten slag granulation effect, but reclaims in thermo-efficiency very undesirable at quenching effect and afterheat of slags.And under long-time hot conditions, transmission and the lubrication problem of centrifugal granulation device are not well solved.
At present, the waste heat of molten slag is the high-temperature residual heat resource be not uniquely used effectively in iron and steel enterprise.Efficiently, high-quality ground reclaims metallurgy melting blast furnace slag waste heat will become an important means of iron and steel enterprise's reduction comprehensive energy consumption.
Summary of the invention
The purpose of this utility model is to provide a kind of blast furnace slag comprehensive treating process and Exposure degree power generation system, comprehensive treating process is carried out to molten blast furnace slag and has fully reclaimed the high temperature sensible heat of blast furnace slag, reduce the energy consumption in blast furnace slag treating processes, the blast furnace slag after process can directly as the raw material of cement.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of blast furnace slag comprehensive treating process and Exposure degree power generation system, comprise and connect slag device, Wingdale feeding device, slag Integrated Processing Unit, slag charge refrigerating unit, cold slag charge cycling element, waste heat recovery generating device and exhaust gas purification and treatment device; The described slag device that connects forms by connecing slag ladle, slag ladle and slag chute; Described Wingdale feeding device is made up of Wingdale bunker, feed weigher and ball mill; Described slag Integrated Processing Unit is made up of surge tank and rotary kiln, and described surge tank outlet is connected with described rotary kiln entrance; Described surge tank entrance is connected with slag chute; Described surge tank entrance also exports with ball mill respectively to export with chapelet by pipeline and is connected; Described slag charge refrigerating unit mainly comprises grate-cooler and chain conveyor, and described grate-cooler entrance exports with described slag rotary kiln and is connected; The lingering remnants of past customs mouth front of described grate-cooler is provided with windbreak; Described chain conveyor exports with grate-cooler and is connected; Described cold slag charge cycling element mainly comprises cold slag particle line of pipes and chapelet; Described cold slag particle line of pipes entrance exports with described grate-cooler and is connected; Described cold slag particle line of pipes outlet is connected with chapelet entrance; Described waste heat recovery generating device mainly comprises waste heat boiler, steam turbine, generator, condenser, condensate pump, circulating cooling water pump, cooling tower, deoxygenator and service pump; The air port of getting of described grate-cooler is connected with exhaust-heat boiler inlet by airduct; Described exhaust gas purification and treatment device comprises fly-ash separator, induced draft fan and chimney, and described heat boiler outlet and grate-cooler lingering remnants of past customs mouth are connected with fly-ash separator entrance, and house outlet is connected with induced draft fan entrance, and induced draft fan outlet is connected with chimney.
Further, the appearance connecing slag ladle and slag ladle described in all lays heat-insulating protective layer.
Further, heat-insulating protective layer is laid in the outside of described surge tank, lays high-temperature wearable layer inside it.
Further, described waste heat boiler is lower air intake band built-in sedimentation cell-type waste heat boiler.
Further, economizer, vaporizer and superheater is provided with from top to down in described waste heat boiler; The superheater of described waste heat boiler is connected with the main inlet throttle-stop valve of steam turbine by main steam pipe, and described steam turbine is connected with generator; The exhaust steam outlet of described steam turbine is connected with condenser, and the hot well of condenser is connected with the entrance of condensate pump; The pond, bottom of described cooling tower is connected with circulating cooling water pump, and circulating cooling water pump is connected with the cooling water inlet of described condenser, and the cooling water outlet of described condenser is connected with the top of cooling tower; Described condensed water pump outlet is connected with the entrance of deoxygenator, and the pipe of boiler feedwater simultaneously is also connected with the entrance of described deoxygenator, and the outlet of deoxygenator is connected with the entrance of service pump, and feedwater pump outlet is connected with the economizer entrance of described waste heat boiler.
The advantage of the utility model system is as follows:
1. the utility model utilizes unique slag Integrated Processing Unit to carry out modified, modification to blast furnace slag, makes modified slag charge not need to cool rapidly in process of cooling, also can keep suitable activity, does not affect its use value as cement raw material;
2., owing to not needing chilling, compared with traditional dry treatment method, greatly reduce the process energy consumption of system, improve the economic benefit of system;
3. compared with traditional water quenching treatment method, save a large amount of water resourcess, avoid a large amount of gaseous sulphide SO simultaneously
2and H
2the discharge of S, environmental benefit is remarkable;
4. the utility model efficiently solves the Exposure degree of blast furnace slag, in the later use value basis not affecting blast furnace slag, efficient, fully can recycle slag high-temperature residual heat resource.
Accompanying drawing explanation
Fig. 1 is a kind of blast furnace slag comprehensive treating process of the utility model and Exposure degree power generation system structure figure.
In above-mentioned figure except the word indicated, 1-connects slag ladle, 2-slag ladle, 3-slag chute, 4-Wingdale bunker, 5-feed weigher, 6-ball mill, 7-chapelet, 8-surge tank, 9-rotary kiln, 10-grate-cooler, 10a-gets air port, 10b-lingering remnants of past customs mouth, 10c-windbreak, the cold slag particle line of pipes of 11-, 12-chain conveyor, 13-waste heat boiler, 13a-economizer, 13b-vaporizer, 13c-superheater, 14-fly-ash separator, 15-induced draft fan, 16-chimney, 17-steam turbine, 18-generator, 19-condenser, 20-condensate pump, 21-circulating cooling water pump, 22-cooling tower, 23-deoxygenator, 24-service pump.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details.
As shown in the figure, blast furnace slag comprehensive treating process of the present utility model and Exposure degree power generation system, comprise and connect slag device, slag Integrated Processing Unit, Wingdale feeding device, slag charge refrigerating unit, cold slag charge cycling element, waste heat recovery generating device and exhaust gas purification and treatment device.
Connect slag device to form by connecing slag ladle 1, slag ladle 2 and slag chute 3, the molten blast furnace slag access that slag ladle 1 will discharge after blast furnace ironmaking is connect with inside holding, concentrate and converge to the slag ladle 3 equally with Surgery therapy, and then by the slag chute 3 bottom slag ladle, slag being caused in surge tank 8;
Wingdale feeding device is made up of Wingdale bunker 4, feed weigher 5 and ball mill 6.From Wingdale bunker 4, take a certain amount of Wingdale by feed weigher 5, send into the Wingdale grinding out certain fineness in ball mill 6, then Wingdale is also sent in surge tank 8 by transport pipe.
Slag Integrated Processing Unit is made up of surge tank 8 and rotary kiln 9, and described surge tank 8 exports and is connected with described rotary kiln 9 entrance; Described surge tank 8 entrance is connected with slag chute 3; Described surge tank 8 entrance is exported with ball mill 6 by pipeline, chapelet 7 exports and is connected.The cold slag charge of part sent here by chapelet 7 is also sent in surge tank 8, tentatively mix in surge tank 8 with blast furnace slag and Wingdale, then preliminary mixed slag charge enters rotary kiln 9 again and fully mixes, carry out modified by the Wingdale amount controlling to enter to blast furnace slag, make the slag charge basicity R after mixing 2.0 ~ 2.1, magnesium oxide weight percent≤10%, modified slag charge is made not need to cool rapidly in process of cooling, also can keep suitable activity, not affect its use value as cement raw material; Simultaneously by controlling the cold slag charge amount entered, high temperature blast furnace slag being cooled, makes it be broken for block slag charge.
Slag charge refrigerating unit mainly comprises grate-cooler 10 and chain conveyor 12, and described grate-cooler 10 entrance exports with described slag rotary kiln 9 and is connected; Windbreak 10c is provided with before the lingering remnants of past customs mouth of described grate-cooler 10; Described chain conveyor 12 exports with grate-cooler 10 and is connected.Fully mix through rotary kiln 9, modified after block slag charge drop on grate-cooler 10, heat exchange is carried out with the cooling air blasted from below, grate-cooler 10 is exported through abundant cooled slag charge, temperature is down to less than 150 DEG C, in grate-cooler 10, windbreak 10c is also set, the waste gas of the relative low temperature of postmedian and front portion are separated, avoids high-temp waste gas directly to mix with it and cause the overall grade of waste heat to reduce.
Cold slag charge cycling element mainly comprises cold slag particle line of pipes 11 and chapelet 7; State cold slag particle line of pipes 11 entrance to export with described grate-cooler 10 and be connected; Described cold slag particle line of pipes 11 exports and is connected with chapelet 7 entrance.The slag charge of discharging from grate-cooler 10 is divided into two portions: a part is delivered to stockyard by chain conveyor; The slag charge that another part granularity is suitable then sends into surge tank 8 by cold slag charge cycling element, with high temperature blast furnace slag contact heat-exchanging, plays the effect of cooling and crash high temperature blast furnace slag;
Waste heat recovery generating device mainly comprises waste heat boiler 13, steam turbine 17, generator 18, condenser 19, condensate pump 20, circulating cooling water pump 21, cooling tower 22, deoxygenator 23 and service pump 24; Economizer 13a, vaporizer 13b and superheater 13c is provided with from top to down in waste heat boiler; Middle temperature waste gas is got after air port 10a sends into waste heat boiler 13 heat exchange by airduct from grate-cooler and is produced superheated vapour.Superheated vapour drains into condenser 19 after entering steam turbine 17 expansion working by main steam pipe.After exhaust steam condenses into water in condenser 19, import thermal well, be then sent to deoxygenator 23 deoxygenation by condensate pump 20, then pump into economizer 13a through service pump 24 and recycle; After water coolant in pond is squeezed into condenser 19 by circulating cooling water pump 21, then be discharged into cooling tower 22 and cool, finally get back to pool circulating through overcooled water and utilize.
Exhaust gas purification and treatment device comprises fly-ash separator 14, induced draft fan 15 and chimney 16, and heat boiler outlet and grate-cooler lingering remnants of past customs mouth 10b are connected with fly-ash separator 14 entrance, and fly-ash separator 14 exports and is connected with induced draft fan 15 entrance, and induced draft fan 15 exports and is connected with chimney 16.After the smoke evacuation of waste heat boiler 13 mixes with the afterbody lingering remnants of past customs of grate-cooler 10, after fly-ash separator 14 processes, send into chimney 16 by induced draft fan 15 and enter air.
Claims (5)
1. a blast furnace slag comprehensive treating process and Exposure degree power generation system, comprise and connect slag device, Wingdale feeding device, slag Integrated Processing Unit, slag charge refrigerating unit, cold slag charge cycling element, waste heat recovery generating device and exhaust gas purification and treatment device, it is characterized in that:
The described slag device that connects forms by connecing slag ladle (1), slag ladle (2) and slag chute (3);
Described Wingdale feeding device is made up of Wingdale bunker (4), feed weigher (5) and ball mill (6);
Described slag Integrated Processing Unit is made up of surge tank (8) and rotary kiln (9), and described surge tank (8) outlet is connected with described rotary kiln (9) entrance; Described surge tank (8) entrance is connected with slag chute (3); Described surge tank (8) entrance also exports with ball mill (6) respectively to export with chapelet (7) by pipeline and is connected;
Described slag charge refrigerating unit mainly comprises grate-cooler (10) and chain conveyor (12), and described grate-cooler entrance exports with described rotary kiln (9) and is connected; Lingering remnants of past customs mouth (10b) front of described grate-cooler is provided with windbreak (10c); Described chain conveyor (12) exports with grate-cooler (10) and is connected;
Described cold slag charge cycling element mainly comprises cold slag particle line of pipes (11) and chapelet (7); Described cold slag particle line of pipes (11) entrance exports with described grate-cooler (10) and is connected; Described cold slag particle line of pipes (11) outlet is connected with chapelet (7) entrance;
Described waste heat recovery generating device mainly comprises waste heat boiler (13), steam turbine (17), generator (18), condenser (19), condensate pump (20), circulating cooling water pump (21), cooling tower (22), deoxygenator (23) and service pump (24); The air port (10a) of getting of described grate-cooler is connected with waste heat boiler (13) entrance by airduct;
Described exhaust gas purification and treatment device comprises fly-ash separator (14), induced draft fan (15) and chimney (16), described waste heat boiler (13) outlet and grate-cooler lingering remnants of past customs mouth (10b) are connected with fly-ash separator (14) entrance, fly-ash separator (14) outlet is connected with induced draft fan (15) entrance, and induced draft fan (15) outlet is connected with chimney (16).
2. a kind of blast furnace slag comprehensive treating process according to claim 1 and Exposure degree power generation system, is characterized in that, described in connect slag ladle (1) and slag ladle (2) appearance all lay heat-insulating protective layer.
3. a kind of blast furnace slag comprehensive treating process according to claim 1 and Exposure degree power generation system, is characterized in that, heat-insulating protective layer is laid in the outside of described surge tank (8), lays high-temperature wearable layer inside it.
4. a kind of blast furnace slag comprehensive treating process according to claim 1 and Exposure degree power generation system, is characterized in that, described waste heat boiler (13) is lower air intake band built-in sedimentation cell-type waste heat boiler.
5. according to a kind of blast furnace slag comprehensive treating process one of Claims 1-4 Suo Shu and Exposure degree power generation system, it is characterized in that, in described waste heat boiler (13), be provided with economizer (13a), vaporizer (13b) and superheater (13c) from top to down; Described superheater (13c) is connected by the main inlet throttle-stop valve of main steam pipe with steam turbine (17), and described steam turbine (17) is connected with generator (18); The exhaust steam outlet of described steam turbine (17) is connected with condenser (19), and the hot well of condenser (19) is connected with the entrance of condensate pump (20); The pond, bottom of described cooling tower (22) is connected with circulating cooling water pump (21), circulating cooling water pump (21) is connected with the cooling water inlet of described condenser (19), and the cooling water outlet of described condenser (19) is connected with the top of cooling tower (22); The outlet of described condensate pump (20) is connected with the entrance of deoxygenator (23), the pipe of boiler feedwater simultaneously is also connected with the entrance of described deoxygenator (23), the outlet of deoxygenator (23) is connected with the entrance of service pump (24), and the outlet of service pump (24) is connected with described economizer (13a) entrance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520514981.1U CN204824932U (en) | 2015-07-15 | 2015-07-15 | Power generation system is retrieved to high slag integrated treatment and sensible heat |
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| CN201520514981.1U CN204824932U (en) | 2015-07-15 | 2015-07-15 | Power generation system is retrieved to high slag integrated treatment and sensible heat |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975117A (en) * | 2015-07-15 | 2015-10-14 | 南京凯盛开能环保能源有限公司 | Blast furnace slag overall treatment and sensible heat recovery power generation system and method |
| CN108826962A (en) * | 2018-07-31 | 2018-11-16 | 广西锰华新能源科技发展有限公司 | All-metal structure restores fast-assembling metallurgical equipment |
| CN114111354A (en) * | 2021-11-03 | 2022-03-01 | 湖南博一环保科技有限公司 | Dry cooling device for zinc extraction rotary kiln iron slag and working method thereof |
-
2015
- 2015-07-15 CN CN201520514981.1U patent/CN204824932U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975117A (en) * | 2015-07-15 | 2015-10-14 | 南京凯盛开能环保能源有限公司 | Blast furnace slag overall treatment and sensible heat recovery power generation system and method |
| CN104975117B (en) * | 2015-07-15 | 2017-03-08 | 南京凯盛开能环保能源有限公司 | A kind of blast furnace slag integrated treatment and Exposure degree electricity generation system and method |
| CN108826962A (en) * | 2018-07-31 | 2018-11-16 | 广西锰华新能源科技发展有限公司 | All-metal structure restores fast-assembling metallurgical equipment |
| CN114111354A (en) * | 2021-11-03 | 2022-03-01 | 湖南博一环保科技有限公司 | Dry cooling device for zinc extraction rotary kiln iron slag and working method thereof |
| CN114111354B (en) * | 2021-11-03 | 2023-06-02 | 湖南博一环保科技有限公司 | Dry cooling device for zinc-extracting rotary kiln iron slag and working method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151202 Effective date of abandoning: 20171114 |
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| AV01 | Patent right actively abandoned |