CN203657510U - Heat recovery boiler power generation coupling system - Google Patents
Heat recovery boiler power generation coupling system Download PDFInfo
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- CN203657510U CN203657510U CN201320768693.XU CN201320768693U CN203657510U CN 203657510 U CN203657510 U CN 203657510U CN 201320768693 U CN201320768693 U CN 201320768693U CN 203657510 U CN203657510 U CN 203657510U
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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
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Abstract
The utility model discloses a heat recovery boiler power generation coupling system and belongs to the technical field of waste heat utilization. The system comprises a submerged arc furnace smoke waste heat utilizing system, a rotary kiln smoke waste heat utilizing system and a circulating fluidized bed boiler power generation coupling system, wherein the circulating fluidized bed boiler power generation coupling system comprises a circulating fluidized bed boiler, a main steam pipeline, an steam pocket, a turbine and a power generator, a smoke outlet of the circulating fluidized bed boiler is connected with the steam pocket through the main steam pipeline, an outlet of the steam pocket is connected with the turbine and the power generator in sequence through a pipeline, the submerged arc furnace smoke waste heat utilizing system comprises a submerged arc furnace heat recovery boiler, the rotary kiln smoke waste heat utilizing system comprises a rotary kiln heat recovery boiler, the two heat recovery boilers respectively adopt a dual-pressure system, a low-pressure heat exchanger and a high-pressure heat exchanger are installed in each heat recovery boiler, and high-pressure steam outlets of the two heat recovery boilers are both connected with the main steal pipeline of the circulating fluidized bed boiler power generation coupling system. The heat recovery boiler power generation coupling system is wide in application space and capable of improving the energy utilizing rate and reducing environment pollution.
Description
Technical field
The utility model belongs to UTILIZATION OF VESIDUAL HEAT IN technical field, relates to Waste Heat Generation coupled system.
Background technology
In China's present stage metallurgy, chemical industry, rotary kiln and mineral hot furnace have a very wide range of applications.But due to the feature of high energy consumption (especially electricity needs is high), high pollution, these industries are being born huge pressure at antifouling reduction of discharging, the aspect such as energy-saving and cost-reducing.
In production link, rotary kiln and mineral hot furnace are produced and can be produced a large amount of high-temp waste gas, and the technique that many factories adopt is by accessing large-area radiator, makes flue-gas temperature be reduced to the temperature that dust-precipitator can bear, and finally directly discharges.Only have minority residual heat resources for combustion air, pre-heat mixture or utilize waste-heat recovery device to produce steam, heat recovery efficiency is on the whole not high.
In recent years, cogeneration technology has had development rapidly.Existing afterheat generating system is that sinter fume passes through directly to produce overheated main steam pushing turbine generating after residual heat boiler for exchanging heat, mainly there is following problem: (1) is because waste heat boiler input gas temperature is low, the superheated steam pressure and temperature that waste heat boiler produces is all lower, and generating efficiency is low; (2) because production scene condition changes, smoke temperature change is frequent, causes Turbo-generator Set frequent starting; (3) due to winter in spring environment temperature lowly cause that flue-gas temperature is low, the superheat steam temperature that waste heat boiler produces does not reach the minimum throttle (steam) temperature that steam turbine requires and by forced-stopping machine, fume afterheat is not fully utilized; (4) also there is the scheme that proposes to carry out in exhaust-heat boiler flue gas import afterburning raising flue-gas temperature, although can improve generating capacity, need to increase a large amount of external energy resource consumptions.
China's cogeneration unit is divided into three kinds by waste heat boiler form, that is: single pressure, two pressure, flash distillation.Compared with single pressing system, two pressures and flash distillation can reduce the flue-gas temperature of boiler export, can improve the equivalent speed efficiency of waste heat boiler, but have structure more complicated, and operation easier increases, and invests larger shortcoming; Rotor, the blade of flash system to steam turbine had relatively high expectations.
For metallurgy industry enterprise, afterheat generating system investment is little, and instant effect, can significantly reduce energy consumption, improves Business Economic Benefit simultaneously, has very important meaning for the energy-saving and emission-reduction of China and the development of metallurgy industry.
Utility model content
The purpose of this utility model is to provide Waste Heat Generation coupled system.
The utility model is achieved through the following technical solutions:
Waste Heat Generation coupled system, comprises flue gas waste heat utilization, rotary kiln smoke waste heat utilization system, CFBB generating coupled system;
Described CFBB electricity generation system, comprise CFBB, main steam line, drum, steam turbine, generator, wherein the exhanst gas outlet of CFBB is connected with drum by main steam line, and drum outlet is connected with steam turbine, generator successively by pipeline;
Described mineral hot furnace, rotary kiln smoke waste heat utilization system comprise respectively mineral hot furnace waste heat boiler and rotary kiln waste heat boiler, wherein two kinds of waste heat boilers adopt dual pressure system, low pressure heat exchanger and high pressure heat exchanger are installed in waste heat boiler, and the high steam outlet of two kinds of waste heat boilers connects respectively the main steam line of CFBB electricity generation system.
Further, described flue gas waste heat utilization, comprise mineral hot furnace, water-cooled air cooling equipment, expansion chamber, mineral hot furnace waste heat boiler, deduster, air-introduced machine, chimney, wherein the exhanst gas outlet of mineral hot furnace connects water-cooled air cooling equipment by pipeline, the outlet of water-cooled air cooling equipment connects expansion chamber by flue, the exhanst gas outlet of expansion chamber connects mineral hot furnace waste heat boiler and deduster successively by pipeline, and the outlet of deduster is connected with chimney by air-introduced machine.
Described rotary kiln smoke waste heat utilization system, comprise rotary kiln, expansion chamber, deduster, air-introduced machine, chimney and rotary kiln waste heat boiler, wherein the exhanst gas outlet of rotary kiln is connected with expansion chamber by flue, the outlet of expansion chamber connects rotary kiln waste heat boiler and deduster successively by pipeline, and the outlet of deduster is connected with chimney by air-introduced machine.
The former road of effect of the present utility model as shown in Figure 2, the utility model ore-smelting electric furnace smoke and waste steam boiler and rotary kiln smoke and waste steam boiler form separately respectively a UTILIZATION OF VESIDUAL HEAT IN subsystem, the waste heat foldback producing is returned to the steam turbine of private station and realize cogeneration by generator in whole production process.Wherein rotary kiln waste heat boiler and mineral hot furnace waste heat boiler adopt dual pressure system, in waste heat boiler, be furnished with low pressure heat exchanger and high pressure heat exchanger, cold water after oxygen-eliminating device deoxygenation is sent to low pressure heat exchanger and high pressure heat exchanger, after entering waste heat boiler, the high-temperature flue gas that rotary kiln and mineral hot furnace produce carries out heat exchange with low pressure heat exchanger and high pressure heat exchanger, the high steam producing after high pressure heat exchanger heat exchange, be pooled to the main steam line of afterheat generating system, deliver to steam turbine power generation, steam after having generated electricity is delivered to oxygen-eliminating device again to low pressure heat exchanger and high pressure heat exchanger water supply after being condensed into cold water by condenser, the low-pressure steam producing after the heat exchange of low pressure heat exchanger or hot water are used for getting back to oxygen-eliminating device and carry out deoxygenation operation.
Rotary kiln of the present utility model, mineral hot furnace, power plant for self-supply's CFBB generating coupled system have the space of wide application in metallurgical and chemical industry technique, can improve energy utilization rate, reduce environmental pollution.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is fundamental diagram of the present utility model;
In figure: 1-CFBB, 2-main steam line, 3-drum, 4-steam turbine, 5-generator, 6-comprise mineral hot furnace, 7-water-cooled air cooling equipment, 8-expansion chamber I, 9-mineral hot furnace waste heat boiler, 10-deduster I, 11-air-introduced machine I, 12-chimney I, 13-rotary kiln, 14-expansion chamber II, 15-rotary kiln waste heat boiler, 16-deduster II, 17-air-introduced machine II, 18-chimney II.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Waste Heat Generation coupled system as shown in Figure 1, comprises flue gas waste heat utilization, rotary kiln smoke waste heat utilization system, CFBB generating coupled system;
Described CFBB electricity generation system, comprise CFBB 1, main steam line 2, drum 3, steam turbine 4, generator 5, wherein the exhanst gas outlet of CFBB 1 is connected with drum 3 by main steam line 2, and drum 3 exports by pipeline and is connected with steam turbine 4, generator 5 successively; Described mineral hot furnace, rotary kiln smoke waste heat utilization system comprise respectively mineral hot furnace waste heat boiler and rotary kiln waste heat boiler, wherein two kinds of waste heat boilers adopt dual pressure system, low pressure heat exchanger and high pressure heat exchanger are installed in waste heat boiler, and the high steam outlet of two kinds of waste heat boilers connects respectively the main steam line of CFBB electricity generation system.
Wherein flue gas waste heat utilization, comprise mineral hot furnace 6, water-cooled air cooling equipment 7, expansion chamber I 8, mineral hot furnace waste heat boiler 9, deduster I 10, air-introduced machine I 11, chimney I 12, wherein the exhanst gas outlet of mineral hot furnace 6 connects water-cooled air cooling equipment 7 by pipeline, the outlet of water-cooled air cooling equipment 7 connects expansion chamber I 8 by flue, the exhanst gas outlet of expansion chamber I 8 connects mineral hot furnace waste heat boiler 9 and deduster I 10 successively by pipeline, and the outlet of deduster I 10 is connected with chimney I 12 by air-introduced machine I 11; The steam (vapor) outlet of mineral hot furnace waste heat boiler can also be connected with cogeneration steam turbine.
Rotary kiln smoke waste heat utilization system, comprise rotary kiln 13, expansion chamber II 14, deduster II 16, air-introduced machine II 17, chimney II 18 and rotary kiln waste heat boiler 15, wherein the exhanst gas outlet of rotary kiln 13 is connected with expansion chamber II 14 by flue, the outlet of expansion chamber II 14 connects rotary kiln waste heat boiler 15 and deduster II 16 successively by pipeline, and the outlet of deduster II 16 is connected with chimney II 18 by air-introduced machine II 17; The steam (vapor) outlet of rotary kiln waste heat boiler can also be connected with cogeneration steam turbine.
Claims (5)
1. a Waste Heat Generation coupled system, is characterized in that, comprises flue gas waste heat utilization, rotary kiln smoke waste heat utilization system, CFBB generating coupled system;
Described CFBB electricity generation system, comprise CFBB (1), main steam line (2), drum (3), steam turbine (4), generator (5), wherein the exhanst gas outlet of CFBB (1) is connected with drum (3) by main steam line (2), and drum (3) outlet is connected with steam turbine (4), generator (5) successively by pipeline;
Described mineral hot furnace, rotary kiln smoke waste heat utilization system comprise respectively mineral hot furnace waste heat boiler and rotary kiln waste heat boiler, wherein two kinds of waste heat boilers adopt dual pressure system, low pressure heat exchanger and high pressure heat exchanger are installed in waste heat boiler, and the high steam outlet of two kinds of waste heat boilers connects respectively the main steam line of CFBB electricity generation system.
2. Waste Heat Generation coupled system according to claim 1, it is characterized in that, described flue gas waste heat utilization, comprise mineral hot furnace (6), water-cooled air cooling equipment (7), expansion chamber I (8), mineral hot furnace waste heat boiler (9), deduster I (10), air-introduced machine I (11), chimney I (12), wherein the exhanst gas outlet of mineral hot furnace (6) connects water-cooled air cooling equipment (7) by pipeline, the outlet of water-cooled air cooling equipment (7) connects expansion chamber I (8) by flue, the exhanst gas outlet of expansion chamber I (8) connects mineral hot furnace waste heat boiler (9) and deduster I (10) successively by pipeline, the outlet of deduster I (10) is connected with chimney I (12) by air-introduced machine I (11).
3. Waste Heat Generation coupled system according to claim 2, is characterized in that, also comprises cogeneration steam turbine, and the steam (vapor) outlet of described mineral hot furnace waste heat boiler is connected with cogeneration steam turbine.
4. Waste Heat Generation coupled system according to claim 1, it is characterized in that, described rotary kiln smoke waste heat utilization system, comprise rotary kiln (13), expansion chamber II (14), deduster II (16), air-introduced machine II (17), chimney II (18) and rotary kiln waste heat boiler (15), wherein the exhanst gas outlet of rotary kiln (13) is connected with expansion chamber II (14) by flue, the outlet of expansion chamber II (14) connects rotary kiln waste heat boiler (15) and deduster II (16) successively by pipeline, the outlet of deduster II (16) is connected with chimney II (18) by air-introduced machine II (17).
5. Waste Heat Generation coupled system according to claim 4, is characterized in that, also comprises cogeneration steam turbine, and the steam (vapor) outlet of described rotary kiln waste heat boiler is connected with cogeneration steam turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320768693.XU CN203657510U (en) | 2013-11-29 | 2013-11-29 | Heat recovery boiler power generation coupling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320768693.XU CN203657510U (en) | 2013-11-29 | 2013-11-29 | Heat recovery boiler power generation coupling system |
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| CN203657510U true CN203657510U (en) | 2014-06-18 |
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| CN201320768693.XU Expired - Fee Related CN203657510U (en) | 2013-11-29 | 2013-11-29 | Heat recovery boiler power generation coupling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673645A (en) * | 2013-11-29 | 2014-03-26 | 偏关县晋电化工有限责任公司 | Power-generating coupling system for waste heat boilers |
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2013
- 2013-11-29 CN CN201320768693.XU patent/CN203657510U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673645A (en) * | 2013-11-29 | 2014-03-26 | 偏关县晋电化工有限责任公司 | Power-generating coupling system for waste heat boilers |
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| 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: 20140618 Termination date: 20141129 |
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| EXPY | Termination of patent right or utility model |