CN204404813U - A kind of screw expander that adopts drags sintering waste heat generating system - Google Patents
A kind of screw expander that adopts drags sintering waste heat generating system Download PDFInfo
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- CN204404813U CN204404813U CN201420772324.2U CN201420772324U CN204404813U CN 204404813 U CN204404813 U CN 204404813U CN 201420772324 U CN201420772324 U CN 201420772324U CN 204404813 U CN204404813 U CN 204404813U
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- waste heat
- water pump
- cooling device
- sintering
- vertical cooling
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- 238000005245 sintering Methods 0.000 title claims abstract description 86
- 239000002918 waste heat Substances 0.000 title claims abstract description 65
- 238000001816 cooling Methods 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000009792 diffusion process Methods 0.000 claims abstract description 8
- 239000002912 waste gas Substances 0.000 claims description 18
- 239000000498 cooling water Substances 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 9
- 239000010959 steel Substances 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 230000000295 complement effect Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000004134 energy conservation Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses a kind of screw expander that adopts and drag sintering waste heat generating system.System comprises the vertical cooling device of sintering deposit, sintering machine, bellows, flue collector, deduster, first electric fan, first blower fan, first screw expander, heat pipe waste heat boiler, filling condensing turbine, chimney, generator, condenser, first water pump, second water pump, 3rd water pump, oxygen-eliminating device, 4th water pump, 5th water pump, the two pressure waste heat boiler of two air inlet, cold wind intake valve, second electric fan, second screw expander, second blower fan, diffusion valve, deduster, the vertical cooling device inlet air plenum of sintering deposit, the vertical cooling device low temperature of sintering deposit goes out air compartment, in the vertical cooling device of sintering deposit, temperature goes out air compartment, the vertical cooling device high temperature of sintering deposit goes out air compartment.The utility model can not only high efficiente callback sintering waste heat complementary energy, improves generating efficiency, and equipment of significantly having saved runs required energy consumption, has great importance to iron and steel enterprise's energy-saving and emission-reduction.
Description
Technical field
The utility model relates to a kind of screw expander that adopts and drags sintering waste heat generating system, a kind of device of high efficiente callback Main Gas Flue of Sintering Machine fume afterheat and sintering deposit vertical cooling device waste gas residual heat while of particularly, belongs to high-temperature particle waste heat recovery utilizing equipment and technical field.
Background technology
Steel industry is important basic industry and the mainstay of the national economy industry of country.At present, China's steel industry development rapidly, is achieved huge, but while China's steel industry high speed development, the energy high consumption problem is serious, and the energy-conservation situation of steel industry is abnormal severe.
The operation of Steel Industrial mainly comprises coking, sintering, pelletizing, ironmaking, converter, electric furnace and steel rolling.Sintering plant revamp accounts for 11% of iron and steel production total energy consumption, reduces sintering energy consumption significant for the economic benefit improving iron and steel enterprise.Along with continuing to optimize of sintering process flow process, the recycling of sintering waste heat has become one of effective measure reducing sintering energy consumption.Sintering process has two parts waste heat recoverable, is the flue gas waste heat recovery in sintering machine wind box and the Exposure degree sintering at the end hot finished product ore deposit respectively.Recycling this two parts heat is the energy-conservation important step of sintering circuit, to SINTERING PRODUCTION energy efficiency, reduce costs play a part great.
At present, it is lower to the flue gas heat recovery rate in sintering machine wind box during China's sintering circuit is energy-conservation, there is again the defects such as air leak rate of air curtain is high in the circular cooler of the recovery hot finished product ore deposit sensible heat of extensive use, and the vertical cooling device of sintering deposit disclosed in national patent " vertical helical distributary cooling heat exchange device and method thereof for sintering waste heat generating system " (patent No. 201410280340.4) not only eliminates leaking out of equipment, and exhaust heat stepped utilization can be realized, improve waste heat recovery rate.
Utilize in process at sintering waste heat, generally waste heat is passed through steam turbine power generation, but steam turbine requires higher to steam quality, the steam that sintering waste heat produces is difficult to reach requirement completely, causes steam turbine power generation efficiency not high.In order to overcome this defect, native system passes through to introduce the screw expander to steam craftmanship less demanding (less than 250 DEG C, below 1.5MPa) and filling condensing turbine cooperation, the steam that comprehensive utilization quality is different, thus increase substantially energy utilization efficiency.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, provides a kind of screw expander that adopts to drag sintering waste heat generating system.
The utility model is achieved through the following technical solutions:
Screw expander drags sintering waste heat generating system and comprises the vertical cooling device of sintering deposit, sintering machine, bellows, flue collector, deduster, first electric fan, first blower fan, first screw expander, heat pipe waste heat boiler, filling condensing turbine, chimney, generator, condenser, first water pump, second water pump, 3rd water pump, oxygen-eliminating device, 4th water pump, 5th water pump, the two pressure waste heat boiler of two air inlet, cold wind intake valve, second electric fan, second screw expander, second blower fan, diffusion valve, deduster, the vertical cooling device inlet air plenum of sintering deposit, the vertical cooling device low temperature of sintering deposit goes out air compartment, in the vertical cooling device of sintering deposit, temperature goes out air compartment, the vertical cooling device high temperature of sintering deposit goes out air compartment.
The vertical cooling device high temperature of sintering deposit goes out air compartment, deduster, the two pressure waste heat boiler of two air inlet, filling condensing turbine, generator is connected in turn, and in the vertical cooling device of sintering deposit, temperature goes out air compartment, deduster, the two pressure waste heat boiler of two air inlet, second screw expander, 3rd water pump, condenser, first water pump, oxygen-eliminating device is connected in turn, and oxygen-eliminating device outlet is divided into two-way, and a road the 5th water pump is connected with the cooling water inlet of the two pressure waste heat boiler of two air inlet, another Lu Jing tetra-water pump, heat pipe waste heat boiler, filling condensing turbine filling import is connected in turn, is provided with bellows, bellows in sintering machine, flue collector, deduster is connected in turn, deduster respectively with the first electric fan entrance, first fans entrance is connected, the first electric fan outlet, first fan outlet is connected with chimney through heat pipe waste heat boiler respectively, first screw expander is connected with the first blower fan, second screw expander is connected with the second blower fan, and sintering deposit vertical cooling device low temperature goes out air compartment through deduster two pressure waste heat boiler waste gas outlet with two air inlet respectively, cold wind intake valve, second electric fan entrance, second fans entrance is connected, the second electric fan outlet, second fan outlet is connected through the vertical cooling device inlet air plenum of diffusion valve and sintering deposit, and filling condensing turbine comparatively low-pressure steam outlet is connected with oxygen-eliminating device steam inlet, the two pressure waste heat boiler middle pressure steam outlet of two air inlet, first screw expander, second water pump, condenser is connected in turn.
The utility model is by adopting the method for exhaust heat stepped utilization, the high-temp waste gas, middle temperature waste gas and the low temperature waste gas that are reclaimed by vertical for sintering deposit cooling device carry out classified utilization, and wherein high-temp waste gas, middle temperature waste gas produce superheated steam by the two pressure waste heat boiler of two air inlet and carries out waste heat recovery; The flue gas of Main Gas Flue of Sintering Machine produces superheated steam by heat pipe waste heat boiler and carries out waste heat recovery.Because the steam quality transformed is different, to high pressure-temperature superheated steam, generated electricity by filling condensing turbine, and screw expander is passed through to the superheated steam of medium temperature and medium pressure, be used for dragging a whole set of sintering waste heat generating system.Adopt screw expander to drag sintering waste heat generating system, not only make use of the residual heat and energy of high-temp waste gas very well, and make medium temperature and medium pressure waste gas also can carry out heat recovery and utilization, substantially increase sintering waste heat recovery utilization rate, saved electric energy.
Accompanying drawing explanation
Fig. 1 adopts screw expander to drag sintering waste heat generating system structural representation.
Detailed description of the invention
As shown in Figure 1, screw expander drags sintering waste heat generating system and comprises the vertical cooling device 1 of sintering deposit, sintering machine 2, bellows 3, flue collector 4, deduster 5, first electric fan 6, first blower fan 7, first screw expander 8, heat pipe waste heat boiler 9, filling condensing turbine 10, chimney 11, generator 12, condenser 13, first water pump 14, second water pump 15, 3rd water pump 16, oxygen-eliminating device 17, 4th water pump 18, 5th water pump 19, the two pressure waste heat boiler 20 of two air inlet, cold wind intake valve 21, second electric fan 22, second screw expander 23, second blower fan 24, diffusion valve 25, deduster 26, the vertical cooling device inlet air plenum 27 of sintering deposit, the vertical cooling device low temperature of sintering deposit goes out air compartment 28, in the vertical cooling device of sintering deposit, temperature goes out air compartment 29, the vertical cooling device high temperature of sintering deposit goes out air compartment 30.
The vertical cooling device high temperature of sintering deposit goes out air compartment 30, deduster 26, the two pressure waste heat boiler 20 of two air inlet, filling condensing turbine 10, generator 12 is connected in turn, and in the vertical cooling device of sintering deposit, temperature goes out air compartment 29, deduster 26, the two pressure waste heat boiler 20 of two air inlet, second screw expander 23, 3rd water pump 16, condenser 13, first water pump 14, oxygen-eliminating device 17 is connected in turn, and oxygen-eliminating device outlet is divided into two-way, and a road the 5th water pump 19 is connected with the cooling water inlet of the two pressure waste heat boiler 20 of two air inlet, another Lu Jing tetra-water pump 18, heat pipe waste heat boiler 9, filling condensing turbine 10 filling import is connected in turn, is provided with bellows 3, bellows 3 in sintering machine 2, flue collector 4, deduster 5 is connected in turn, deduster 5 respectively with the first electric fan 6 entrance, first blower fan 7 entrance is connected, and the first electric fan 6 exports, first blower fan 7 exports and is connected with chimney 11 through heat pipe waste heat boiler 9 respectively, first screw expander 8 is connected with the first blower fan 7, second screw expander 23 is connected with the second blower fan 24, and sintering deposit vertical cooling device low temperature goes out air compartment 28 through deduster 26 two pressure waste heat boiler 20 waste gas outlet with two air inlet respectively, cold wind intake valve 21, second electric fan 22 entrance, second blower fan 24 entrance is connected, and the second electric fan 22 exports, second blower fan 24 exports and is connected through the vertical cooling device inlet air plenum 27 of diffusion valve 25 and sintering deposit, and filling condensing turbine 10 comparatively low-pressure steam outlet is connected with oxygen-eliminating device 17 steam inlet, the two pressure waste heat boiler 20 middle pressure steam outlet of two air inlet, first screw expander 8, second water pump 15, condenser 13 is connected in turn.
Screw expander drags power generation method by sintered waste heat: the high-temp waste gas of 450 ~ 500 DEG C of sintering deposit vertical cooling device 1 recovery and the middle temperature waste gas of 300 ~ 350 DEG C pass into the two pressure waste heat boiler 20 of two air inlet respectively through deduster 26, produce 400 ~ 450 DEG C, the superheated steam of 1 ~ 2MPa enters filling condensing turbine 10 with the form of main steam, produce 200 ~ 250 DEG C, the superheated steam of 0.5 ~ 1MPa passes into the first screw expander 8 and the second screw expander 23 respectively, wherein the first screw expander 8 drags the first blower fan 7, make the high-temperature flue gas of 400 ~ 450 of Main Gas Flue of Sintering Machine 4 DEG C after deduster 5, introduce heat pipe waste heat boiler 9 and carry out exchange heat with cooling water, waste gas enters air by chimney 11, 300 ~ 350 DEG C that produce, the superheated steam of 0.5 ~ 1MPa enters filling condensing turbine 10 with the form of filling, filling condensing turbine 10 is jointly driven to generate electricity with main steam, wherein the second screw expander 23 drags the second blower fan 24, make to go out air compartment 28 low temperature waste gas of 150 ~ 200 DEG C out from sintering deposit vertical cooling device low temperature and blast the vertical cooling device inlet air plenum 27 of sintering deposit with after the two pressure waste heat boiler 20 of two air inlet gas and vapor permeation out, continue to carry out exchange heat with the heat sinter in the vertical cooling device 1 of sintering deposit, realize exhaust heat stepped utilization, air compartment 28 low temperature waste gas of 150 ~ 200 DEG C is out gone out through deduster 26 after mutually mixing from two pressure waste heat boiler 20 gas out of two air inlet from sintering deposit vertical cooling device low temperature, mix with the cold wind passed into from cold wind inlet valve 21, reach sintering deposit vertical cooling device 1 EAT scope, again after the second blower fan 24 supercharging, according to sintering deposit vertical cooling device 1 traffic requirement, by regulating diffusion valve 25 to diffuse portion, finally entering the vertical cooling device 1 of sintering deposit and carrying out exchange heat with heat sinter.The exhaust steam of discharging from the first screw expander 8, second screw expander 23 and filling condensing turbine 10 is after condenser 13 condensation, under the effect of the first water pump 14, pump into oxygen-eliminating device 17, after oxygen-eliminating device 17 deoxygenation, supply water to respectively heat pipe waste heat boiler 9 and the two pressure waste heat boiler 20 of two air inlet by the 4th water pump 18, the 5th water pump 19 again.First blower fan 7, second blower fan 24 is dragged by the first screw expander 8, second screw expander 23 under normal circumstances, and when the first blower fan 7, second blower fan 24 breaks down, the first electric fan 6, second electric fan 22 will carry out work.
The utility model utilizes the method for exhaust heat stepped utilization, the residual heat and energy vertical for sintering deposit cooling device and sintering machine produced carries out waste heat recovery by adopting screw expander to drag sintering waste heat generating system, not only make use of the residual heat and energy of high-temp waste gas very well, and adopt screw expander to make middle low temperature waste gas also can carry out heat recovery, substantially increase sintering waste heat recovery utilization rate, save electric energy, effectively facilitate energy-saving and emission-reduction.
Claims (1)
1. adopt screw expander to drag a sintering waste heat generating system, it is characterized in that: comprise the vertical cooling device of sintering deposit (1), sintering machine (2), bellows (3), flue collector (4), deduster (5), first electric fan (6), first blower fan (7), first screw expander (8), heat pipe waste heat boiler (9), filling condensing turbine (10), chimney (11), generator (12), condenser (13), first water pump (14), second water pump (15), 3rd water pump (16), oxygen-eliminating device (17), 4th water pump (18), 5th water pump (19), the two pressure waste heat boiler (20) of two air inlet, cold wind intake valve (21), second electric fan (22), second screw expander (23), second blower fan (24), diffusion valve (25), deduster (26), the vertical cooling device inlet air plenum (27) of sintering deposit, the vertical cooling device low temperature of sintering deposit goes out air compartment (28), in the vertical cooling device of sintering deposit, temperature goes out air compartment (29), the vertical cooling device high temperature of sintering deposit goes out air compartment (30),
The vertical cooling device high temperature of sintering deposit goes out air compartment (30), deduster (26), the two pressure waste heat boiler (20) of two air inlet, filling condensing turbine (10), generator (12) is connected in turn, and in the vertical cooling device of sintering deposit, temperature goes out air compartment (29), deduster (26), the two pressure waste heat boiler (20) of two air inlet, second screw expander (23), 3rd water pump (16), condenser (13), first water pump (14), oxygen-eliminating device (17) is connected in turn, and oxygen-eliminating device outlet is divided into two-way, and a road the 5th water pump (19) is connected with the cooling water inlet of the two pressure waste heat boiler (20) of two air inlet, another Lu Jing tetra-water pump (18), heat pipe waste heat boiler (9), filling condensing turbine (10) filling import is connected in turn, is provided with bellows (3) in sintering machine (2), bellows (3), flue collector (4), deduster (5) is connected in turn, deduster (5) respectively with the first electric fan (6) entrance, first blower fan (7) entrance is connected, and the first electric fan (6) exports, first blower fan (7) outlet is connected with chimney (11) through heat pipe waste heat boiler (9) respectively, first screw expander (8) is connected with the first blower fan (7), second screw expander (23) is connected with the second blower fan (24), and sintering deposit vertical cooling device low temperature goes out air compartment (28) through deduster (26) two pressure waste heat boiler (20) waste gas outlet with two air inlet respectively, cold wind intake valve (21), second electric fan (22) entrance, second blower fan (24) entrance is connected, and the second electric fan (22) exports, second blower fan (24) outlet is connected through the vertical cooling device inlet air plenum (27) of diffusion valve (25) and sintering deposit, filling condensing turbine (10) comparatively low-pressure steam outlet is connected with oxygen-eliminating device (17) steam inlet, two pressure waste heat boiler (20) the middle pressure steam outlet of two air inlet, first screw expander (8), second water pump (15), condenser (13) is connected in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772324.2U CN204404813U (en) | 2014-12-10 | 2014-12-10 | A kind of screw expander that adopts drags sintering waste heat generating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772324.2U CN204404813U (en) | 2014-12-10 | 2014-12-10 | A kind of screw expander that adopts drags sintering waste heat generating system |
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| CN204404813U true CN204404813U (en) | 2015-06-17 |
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| CN201420772324.2U Expired - Fee Related CN204404813U (en) | 2014-12-10 | 2014-12-10 | A kind of screw expander that adopts drags sintering waste heat generating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457299A (en) * | 2014-12-10 | 2015-03-25 | 浙江大学 | Screw expander dragged sintering wast heat power generation system and method |
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2014
- 2014-12-10 CN CN201420772324.2U patent/CN204404813U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457299A (en) * | 2014-12-10 | 2015-03-25 | 浙江大学 | Screw expander dragged sintering wast heat power generation system and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20161210 |
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| CF01 | Termination of patent right due to non-payment of annual fee |