CN102997691A - System and method for generating electricity by using residual heat generated in transformation of coke oven flue waste gas into high-quality waste gas - Google Patents
System and method for generating electricity by using residual heat generated in transformation of coke oven flue waste gas into high-quality waste gas Download PDFInfo
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- CN102997691A CN102997691A CN201210300899XA CN201210300899A CN102997691A CN 102997691 A CN102997691 A CN 102997691A CN 201210300899X A CN201210300899X A CN 201210300899XA CN 201210300899 A CN201210300899 A CN 201210300899A CN 102997691 A CN102997691 A CN 102997691A
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Abstract
The invention designs a system for generating electricity by using residual heat generated in transformation of coke oven flue waste gas into high-quality waste gas. The system mainly comprises coke oven flue waste gas; the coke oven flue waste gas is connected with a mixer through a low-temperature waste gas flue; the mixer is connected with a high-temperature flue gas generator simultaneously through a high-temperature flue gas flue; a burner is arranged in the high-temperature flue gas generator, and is provided with a blast furnace gas pipeline and a combustion-supporting air pipeline respectively; the blast furnace gas pipeline is provided with a blast furnace gas regulating valve; the mixer is connected with a residual heat boiler through a mixed flue gas flue; and overheated steam is generated in the residual heat boiler through heat exchange. High-temperature flue gas generated by combustion of high-temperature gas is mixed with the coke oven flue waste gas, the temperature of mixed flue gas is about 350 DEG C, the mixed flue gas is introduced into the residual heat boiler for performing heat exchange, and the generated overheated steam is used for generating electricity through a turbine generator, so that recycling of the coke oven flue waste gas is realized, the energy utilization ratio is increased, and higher environment friendliness is realized.
Description
Technical field
The present invention relates to exhaust gas utilization, energy recovery field, especially a kind of coke oven flue waste gas is converted to heat utilization power generating system and the method thereof of high-quality waste gas.
Background technology
In the industry production processes such as metallurgy, chemical industry, building materials, the temperature of waste gas of a larger part is arranged greatly between 190-280 ℃, this part low-grade heat energy from waste gas is large but because temperature is on the low side, be difficult to directly mate the superheated steam generation system, perhaps because supporting afterheat generating system and one-time investment is too high, deficiency in economic performance, this partial heat energy finally enter atmosphere with the sensible heat form of waste gas, cause very large waste.Comprise the development of cogeneration technology along with UTILIZATION OF VESIDUAL HEAT IN, 300 ~ 450 ℃ low temperature waste gas waste heat is recycled fully, and direct supporting boiler, steam turbine afterheat generating system, very significant environmental protection and energy saving economy benefit have been obtained, so a kind of low-quality waste gas is converted to environmental protection and the energy-saving significance that heat utilization power generating system behind the high-quality waste gas has great reality.
Summary of the invention
The objective of the invention is provides a kind of low-quality waste gas that coke oven flue waste gas fully can be recycled to be converted to heat utilization power generating system and the method thereof of high-quality waste gas for the deficiency that solves above-mentioned technology.
In order to achieve the above object, the designed coke oven flue waste gas of the present invention is converted to the heat utilization power generating system of high-quality waste gas, it mainly comprises coke oven flue waste gas, coke oven flue waste gas is connected with blender by the low temperature waste gas flue, blender is connected with hot-gas generator by the high-temperature flue gas flue simultaneously, in hot-gas generator, be provided with burner, be respectively equipped with blast furnace gas pipeline and combustion air pipeline on the burner, be provided with the blast furnace gas control valve at blast furnace gas pipeline, blender is connected with waste heat boiler by the mixed flue gas flue, produces superheated steam by heat exchange in the waste heat boiler.
As optimization, waste heat boiler is connected with Turbo-generator Set by superheat steam pipeline, and Turbo-generator Set is connected with waste heat boiler by the condensate return pipe simultaneously, and waste heat boiler is provided with the fume emission mouth.
Be provided with the first temperature-detecting device at the mixed flue gas flue; detect the temperature of mixed flue gas; and with this mixed flue gas temperature as regulating parameter control blast furnace gas control valve; reach the purpose of regulating blast furnace coal tolerance and control waste heat boiler input gas temperature, reach 350 ℃ to guarantee mixed mixed flue gas.
Be provided with the second temperature-detecting device and gas-detecting device at the high-temperature flue gas flue, with high-temperature flue-gas and CO, the CO in the monitoring high-temperature flue gas flue
2Whether concentration is normal, to guarantee blast furnace gas fully burning in the burner of hot-gas generator, guarantees the blast furnace gas after-flame.
Described waste heat boiler is to carry two pressure waste heat boilers of oxygen-eliminating device or not with the single-pressure HGSR of oxygen-eliminating device.
Coke oven flue waste gas is converted to the method for the UTILIZATION OF VESIDUAL HEAT IN generating of high-quality waste gas: coke oven flue waste gas is passed in the blender by the low temperature waste gas pipeline, simultaneously blast furnace gas and combustion air pass in the burner in the hot-gas generator, the high-temperature flue gas that produces passes in the blender by the high-temperature flue gas flue, intake by control blast furnace gas control valve control blast furnace gas, thereby the amount of control high-temperature flue gas, two kinds of flue gases mix the mixed flue gas of 350 ℃ of formation, mixed flue gas passes into by the mixed flue gas flue and carries out heat exchange in the waste heat boiler, produce superheated steam, and flue gas is discharged from the fume emission mouth, superheated steam passes into Turbo-generator Set by superheat steam pipeline, Turbo-generator Set produces electric energy, and produced simultaneously condensed water is back to waste heat boiler by the condensate return pipe.
The resulting coke oven flue waste gas of the present invention is converted to heat utilization power generating system and the method thereof of high-quality waste gas, it mixes the high-temperature flue gas that blast furnace gas combustion produces with coke oven flue waste gas, mixed flue gas is reached about 350 ℃, then mixed flue gas is passed into and carry out heat exchange in the waste heat boiler, produce superheated steam and be used for the Turbo-generator Set generating, realize the recycling to the coke oven stack gases, improved energy utilization rate, more environmental protection.
Description of drawings
Fig. 1 is flowage structure schematic diagram of the present invention.
The specific embodiment
The invention will be further described by reference to the accompanying drawings below by embodiment.
Embodiment 1:
As shown in Figure 1, the coke oven flue waste gas that present embodiment is described is converted to the heat utilization power generating system of high-quality waste gas, it mainly comprises coke oven flue waste gas 1, coke oven flue waste gas 1 is connected with blender 2 by low temperature waste gas flue 17, blender 2 is connected with hot-gas generator 3 by high-temperature flue gas flue 4 simultaneously, in hot-gas generator 3, be provided with burner 10, be respectively equipped with blast furnace gas pipeline 11 and combustion air pipeline 12 on the burner 10, be provided with blast furnace gas control valve 9 at blast furnace gas pipeline 11, blender 2 is connected with waste heat boiler 6 by mixed flue gas flue 4, produce superheated steam by heat exchange in the waste heat boiler 6, waste heat boiler 6 is connected with Turbo-generator Set 14 by superheat steam pipeline 15, Turbo-generator Set 14 is connected with waste heat boiler 6 by condensate return pipe 16 simultaneously, and waste heat boiler 6 is provided with fume emission mouth 13.
Be provided with the first temperature-detecting device 8 at mixed flue gas flue 4, be provided with the second temperature-detecting device 7 and gas-detecting device at high-temperature flue gas flue 4.
Described waste heat boiler 6 is for carrying two pressure waste heat boilers of oxygen-eliminating device.
Coke oven flue waste gas is converted to the method for the UTILIZATION OF VESIDUAL HEAT IN generating of high-quality waste gas: coke oven flue waste gas 1 is passed in the blender 2 by low temperature waste gas flue 17, simultaneously blast furnace gas and combustion air pass in the burner 10 in the hot-gas generator 3, the high-temperature flue gas that produces passes in the blender 2 by high-temperature flue gas flue 4, intake by control blast furnace gas control valve 9 control blast furnace gases, thereby the amount of control high-temperature flue gas, two kinds of flue gases mix the mixed flue gas of 350 ℃ of formation, mixed flue gas passes into by mixed flue gas flue 4 and carries out heat exchange in the waste heat boiler 6, produce superheated steam, and flue gas is discharged from fume emission mouth 13, superheated steam passes into Turbo-generator Set 14 by superheat steam pipeline 15, Turbo-generator Set 14 produces electric energy, and produced simultaneously condensed water is back to waste heat boiler 6 by condensate return pipe 16.
Embodiment 2:
The coke oven flue waste gas that present embodiment is described is converted to the heat utilization power generating system of high-quality waste gas, and its waste heat boiler 6 is not for the single-pressure HGSR of oxygen-eliminating device.
Claims (6)
1. a coke oven flue waste gas is converted to the heat utilization power generating system of high-quality waste gas, it mainly comprises coke oven flue waste gas, it is characterized in that coke oven flue waste gas is connected with blender by the low temperature waste gas flue, blender is connected with hot-gas generator by the high-temperature flue gas flue simultaneously, in hot-gas generator, be provided with burner, be respectively equipped with blast furnace gas pipeline and combustion air pipeline on the burner, be provided with the blast furnace gas control valve at blast furnace gas pipeline, blender is connected with waste heat boiler by the mixed flue gas pipeline, produces superheated steam by heat exchange in the waste heat boiler.
2. coke oven flue waste gas according to claim 1 is converted to the heat utilization power generating system of high-quality waste gas, it is characterized in that waste heat boiler is connected with Turbo-generator Set by superheat steam pipeline, Turbo-generator Set is connected with waste heat boiler by the condensate return pipe simultaneously, and waste heat boiler is provided with the fume emission mouth.
3. coke oven flue waste gas according to claim 1 is converted to the heat utilization power generating system of high-quality waste gas, it is characterized in that being provided with the first temperature-detecting device at the mixed flue gas flue.
4. coke oven flue waste gas according to claim 1 is converted to the heat utilization power generating system of high-quality waste gas, it is characterized in that being provided with the second temperature-detecting device and gas-detecting device at the high-temperature flue gas flue.
5. coke oven flue waste gas according to claim 1 and 2 is converted to the heat utilization power generating system of high-quality waste gas, it is characterized in that described waste heat boiler is to carry two pressure waste heat boilers of oxygen-eliminating device or not with the single-pressure HGSR of oxygen-eliminating device.
6. a coke oven flue waste gas is converted to the method for the UTILIZATION OF VESIDUAL HEAT IN generating of high-quality waste gas, it is characterized in that coke oven flue waste gas is passed in the blender by the low temperature waste gas flue, simultaneously blast furnace gas and combustion air pass in the burner in the hot-gas generator, the high-temperature flue gas that produces passes in the blender by the high-temperature flue gas flue, intake by control blast furnace gas control valve control blast furnace gas, thereby the amount of control high-temperature flue gas, two kinds of flue gases mix the mixed flue gas of 350 ℃ of formation, mixed flue gas passes into by the mixed flue gas flue and carries out heat exchange in the waste heat boiler, produce superheated steam, and flue gas is discharged from the fume emission mouth, superheated steam passes into Turbo-generator Set by superheat steam pipeline, Turbo-generator Set produces electric energy, and produced simultaneously condensed water is back to waste heat boiler by the condensate return pipe.
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| CN201210300899XA CN102997691A (en) | 2012-08-22 | 2012-08-22 | System and method for generating electricity by using residual heat generated in transformation of coke oven flue waste gas into high-quality waste gas |
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| CN201210300899XA CN102997691A (en) | 2012-08-22 | 2012-08-22 | System and method for generating electricity by using residual heat generated in transformation of coke oven flue waste gas into high-quality waste gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244210A (en) * | 2013-04-23 | 2013-08-14 | 中冶南方工程技术有限公司 | Coke oven flue gas waste heat power generation system and coke oven flue gas waste heat power generation method |
| CN103453534A (en) * | 2013-09-11 | 2013-12-18 | 中石化上海工程有限公司 | Method for comprehensively utilizing energy of oxidation tail gas of phenol-acetone device to generate byproduct steam |
| CN105928186A (en) * | 2016-05-03 | 2016-09-07 | 长沙恒宇节能环保科技有限公司 | Efficient waste heat boiler |
| CN108707710A (en) * | 2018-05-24 | 2018-10-26 | 北京科技大学 | A kind of method coke oven flue gas resource processing and utilized |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244210A (en) * | 2013-04-23 | 2013-08-14 | 中冶南方工程技术有限公司 | Coke oven flue gas waste heat power generation system and coke oven flue gas waste heat power generation method |
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| CN105928186A (en) * | 2016-05-03 | 2016-09-07 | 长沙恒宇节能环保科技有限公司 | Efficient waste heat boiler |
| CN108707710A (en) * | 2018-05-24 | 2018-10-26 | 北京科技大学 | A kind of method coke oven flue gas resource processing and utilized |
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Inventor after: Kong Ping Inventor after: Yao Qiong Inventor after: Zhang Bozhong Inventor after: Ren Lei Inventor after: Liu Haiming Inventor after: Kong Ximin Inventor after: Zhou Haiping Inventor before: Zhou Haiping Inventor before: Kong Ping Inventor before: Yao Qiong Inventor before: Zhang Bozhong Inventor before: Kong Ximin |
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Free format text: CORRECT: INVENTOR; FROM: ZHOU HAIPING KONG PING YAO QIONG ZHANG BOZHONG KONG XIMIN TO: KONG PING YAO QIONG ZHANG BOZHONG REN LEI LIU HAIMING KONG XIMIN ZHOU HAIPING |
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Application publication date: 20130327 |