CN203321604U - Coke oven smoke waste heat power generation system - Google Patents
Coke oven smoke waste heat power generation system Download PDFInfo
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- CN203321604U CN203321604U CN2013202886624U CN201320288662U CN203321604U CN 203321604 U CN203321604 U CN 203321604U CN 2013202886624 U CN2013202886624 U CN 2013202886624U CN 201320288662 U CN201320288662 U CN 201320288662U CN 203321604 U CN203321604 U CN 203321604U
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Abstract
The utility model discloses a coke oven smoke waste heat power generation system, and belongs to the technical field of waste heat utilization in the chemical industry. The coke oven smoke waste heat power generation system solves the problem that due to the facts that the amount of the smoke exhausted by a coke oven is large and the temperature of the smoke is high, a great deal of energy is wasted if the smoke is exhausted directly. The coke oven smoke waste heat power generation system mainly comprises a smoke generation system and a steam and water cycle system. The smoke generation system comprises a first coke oven, a second coke oven, a waste heat boiler, a steam and water separator, a screw expansion power machine and a power generator, wherein the first coke oven and the second coke oven are respectively connected with the waste heat boiler, the waste heat boiler is connected with the steam and water separator, the steam and water separator is connected with the screw expansion power machine, and the screw expansion power machine is connected with the power generator. The steam and water cycle system comprises a condenser, a cooling tower, a condensation tank and a softened water tank, wherein the condenser is connected with the screw expansion power machine and is connected with the softened water tank through the condensation tank, and the softened water tank is connected with a water inlet of the waste heat boiler. The coke oven smoke waste heat power generation system is mainly used for steam power generation.
Description
Technical field
The utility model relates to chemical industry UTILIZATION OF VESIDUAL HEAT IN technical field, specifically, relates in particular to a kind of waste heat of coke-oven flue gas power generation system.
Background technique
Utilize coke-stove gas that coal is heated to 1000 ℃ of left and right under isolated air conditions, by a series of physical and chemical changes, produce coke, obtain the chemical product such as coal gas, coal tar oil, crude benzol simultaneously.The predominant use of coke is ironmaking, on a small quantity as industrial chemicals; Coal gas is fuel and important industrial chemicals gas; Account for more than 40% of total coal gas amount for the coal gas amount of melting down heating in coke-stove gas, the exhaust gas volumn of finally discharging from coke oven is large, and temperature is higher, and flue gas collects by stack emission, has caused a large amount of energy wastes.If reclaim the heat of coke oven road gas, for improving the enterprise energy comprehensive utilization ratio, reduce production costs significant.
The model utility content
Large in order to solve the exhaust gas volumn that in prior art, coke oven is discharged, and temperature is higher, and directly discharge will cause the defect of a large amount of energy wastes, and the utility model provides a kind of waste heat of coke-oven flue gas power generation system.
The utility model is achieved through the following technical solutions:
A kind of waste heat of coke-oven flue gas power generation system, comprise flue gas power generation system and Water, steam circulation system, described flue gas power generation system comprises the coke oven first, coke oven second, exhaust heat boiler, steam-water separator, screw expansion motor and generator, the coke oven first is connected with exhaust heat boiler by the fume pipe first respectively with coke oven second, the exhaust heat boiler afterbody is provided with blower fan, blower fan is connected with chimney by fume pipe second, exhaust heat boiler is connected with steam-water separator by steam line, the steam (vapor) outlet of steam-water separator is connected with the steam inlet of screw expansion motor by modulating valve, the steam-water separator lower end exports with demineralized water box and is connected by water of condensation, screw expansion motor is connected with generator, described Water, steam circulation system comprises vapour condenser, cooling tower, condensate water tank and demineralized water box, vapour condenser is connected with screw expansion motor by steam line, vapour condenser is connected with cooling tower, the vapour condenser bottom is provided with condensate water tank, condensate water tank is connected with demineralized water box by water pipe, be provided with oxygen-eliminating device between demineralized water box and exhaust heat boiler, oxygen-eliminating device is connected with the water intake of exhaust heat boiler.
Be provided with bypass duct between fume pipe first and fume pipe second, bypass duct is provided with by-pass valve.
Compared with prior art, the beneficial effects of the utility model are:
The waste heat of high-temperature flue gas in the flue gas power generation system coke oven first of having utilized exhaust heat boiler to reclaim and coke oven second, and the conversion of heat into kinetic energy of steam exhaust heat boiler produced by screw expansion motor is as the power of generator generating, improved the comprehensive utilization of energy rate of enterprise, for enterprise has increased benefit;
Set up bypass duct between fume pipe first and fume pipe second, make exhaust heat boiler ensure that when breaking down or overhaul flue gas normally discharges;
The Water, steam circulation system recoveries condensed fluid of flue gas power generation system recycle for exhaust heat boiler, improved raw-material comprehensive utilization ratio, reduced cost of production of the present utility model.
The accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Generator in the drawings, 1; 2, screw expansion motor; 3, modulating valve; 4, diffusion valve; 5, steam-water separator; 6, exhaust heat boiler; 7, blower fan; 8, fume pipe second; 9, chimney; 10, bypass duct; 11, by-pass valve; 12, coke oven second; 13, fume pipe first; 14, coke oven first; 15, oxygen-eliminating device; 16, demineralized water box; 17, condensate water tank; 18, vapour condenser; 19, cooling tower.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
A kind of waste heat of coke-oven flue gas power generation system, comprise flue gas power generation system and Water, steam circulation system, described flue gas power generation system comprises coke oven first 14, coke oven second 12, exhaust heat boiler 6, steam-water separator 5, screw expansion motor 2 and generator 1, coke oven first 14 is connected with exhaust heat boiler 6 by fume pipe first 13 respectively with coke oven second 12, exhaust heat boiler 6 afterbodys are provided with blower fan 7, blower fan 7 is connected with chimney 9 by fume pipe second 8, exhaust heat boiler 6 is connected with steam-water separator 5 by steam line, the steam (vapor) outlet of steam-water separator 5 is connected with the steam inlet of screw expansion motor 2 by modulating valve 3, steam-water separator 5 lower ends export with demineralized water box 16 and are connected by water of condensation, screw expansion motor 2 is connected with generator 1, described Water, steam circulation system comprises vapour condenser 18, cooling tower 19, condensate water tank 17 and demineralized water box 16, vapour condenser 18 is connected with screw expansion motor 2 by steam line, vapour condenser 18 is connected with cooling tower 19, vapour condenser 18 bottoms are provided with condensate water tank 17, condensate water tank 17 is connected with demineralized water box 16 by water pipe, be provided with oxygen-eliminating device 15 between demineralized water box 16 and exhaust heat boiler 6, oxygen-eliminating device 15 is connected with the water intake of exhaust heat boiler 6, be provided with bypass duct 10 between fume pipe first 13 and fume pipe second 8, bypass duct 10 is provided with by-pass valve 11.
The utility model in use, connects each pipeline, and steam-water separator 5 directly is provided with diffusion valve 4 with modulating valve 3, between vapour condenser 18 and cooling tower 19, passes into recirculated cooling water.
During work, the flue gas that coke oven first 14 and coke oven second 12 produce enters exhaust heat boiler 6 by fume pipe first 13, and carries out heat exchange with exhaust heat boiler 6, and the flue gas after heat exchange enters chimney 9 discharges through blower fan 7; In this simultaneously, the steam that exhaust heat boiler 6 produces enters steam-water separator 5 by steam line, the isolated water of condensation of steam-water separator 5 enters in demineralized water box 16, steam enters in screw expansion motor 2 by modulating valve 3, modulating valve 3 is controlled at the pressure of steam below 1.6Mpa, and screw expansion motor 2 drives generator 1 generating by the conversion of heat into kinetic energy of steam; Steam after cooling enters in vapour condenser 18 by the outlet of screw expansion motor 2, with the recirculated cooling water between cooling tower 19, steam-condensation is become to water of condensation by vapour condenser 18, water of condensation is admitted in demineralized water box 16 by condensate water tank 17, after oxygen-eliminating device 15 filters, for exhaust heat boiler 6, recycles; When exhaust heat boiler 6 breaks down or is overhauled, open by-pass valve 11, the flue gas that coke oven first 14 and coke oven second 12 produce, by bypass duct 10, enters chimney 9 discharges.When screw expansion motor 2 breaks down shutdown, open diffusion valve 4, by the part steam releasing, with steam regulation pressure, Accident prevention occurs.
Claims (2)
1. a waste heat of coke-oven flue gas power generation system, is characterized in that: comprise flue gas power generation system and Water, steam circulation system, described flue gas power generation system comprises coke oven first (14), coke oven second (12), exhaust heat boiler (6), steam-water separator (5), screw expansion motor (2) and generator (1), coke oven first (14) is connected with exhaust heat boiler (6) by fume pipe first (13) respectively with coke oven second (12), exhaust heat boiler (6) afterbody is provided with blower fan (7), blower fan (7) is connected with chimney (9) by fume pipe second (8), exhaust heat boiler (6) is connected with steam-water separator (5) by steam line, the steam (vapor) outlet of steam-water separator (5) is connected with the steam inlet of screw expansion motor (2) by modulating valve (3), steam-water separator (5) lower end exports with demineralized water box (16) and is connected by water of condensation, screw expansion motor (2) is connected with generator (1), described Water, steam circulation system comprises vapour condenser (18), cooling tower (19), condensate water tank (17) and demineralized water box (16), vapour condenser (18) is connected with screw expansion motor (2) by steam line, vapour condenser (18) is connected with cooling tower (19), vapour condenser (18) bottom is provided with condensate water tank (17), condensate water tank (17) is connected with demineralized water box (16) by water pipe, be provided with oxygen-eliminating device (15) between demineralized water box (16) and exhaust heat boiler (6), oxygen-eliminating device (15) is connected with the water intake of exhaust heat boiler (6).
2. waste heat of coke-oven flue gas power generation system according to claim 1, it is characterized in that: be provided with bypass duct (10) between fume pipe first (13) and fume pipe second (8), bypass duct (10) is provided with by-pass valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202886624U CN203321604U (en) | 2013-05-24 | 2013-05-24 | Coke oven smoke waste heat power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202886624U CN203321604U (en) | 2013-05-24 | 2013-05-24 | Coke oven smoke waste heat power generation system |
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| Publication Number | Publication Date |
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| CN203321604U true CN203321604U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013202886624U Expired - Fee Related CN203321604U (en) | 2013-05-24 | 2013-05-24 | Coke oven smoke waste heat power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941031A (en) * | 2017-12-21 | 2018-04-20 | 中冶焦耐(大连)工程技术有限公司 | A kind of heat recovery coke oven high-temperature flue gas system compact type method for arranging technological process |
-
2013
- 2013-05-24 CN CN2013202886624U patent/CN203321604U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941031A (en) * | 2017-12-21 | 2018-04-20 | 中冶焦耐(大连)工程技术有限公司 | A kind of heat recovery coke oven high-temperature flue gas system compact type method for arranging technological process |
| CN107941031B (en) * | 2017-12-21 | 2024-03-19 | 中冶焦耐(大连)工程技术有限公司 | Compact process arrangement method for high-temperature flue gas system of heat recovery coke oven |
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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: 20131204 Termination date: 20150524 |
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| EXPY | Termination of patent right or utility model |