CN202228140U - Comprehensive utilization system of waste heat of flue gas of coke oven - Google Patents
Comprehensive utilization system of waste heat of flue gas of coke oven Download PDFInfo
- Publication number
- CN202228140U CN202228140U CN2011203972030U CN201120397203U CN202228140U CN 202228140 U CN202228140 U CN 202228140U CN 2011203972030 U CN2011203972030 U CN 2011203972030U CN 201120397203 U CN201120397203 U CN 201120397203U CN 202228140 U CN202228140 U CN 202228140U
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- coke oven
- steam turbine
- steam
- flue gas
- waste heat
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Abstract
The utility model discloses a comprehensive utilization system of waste heat of flue gas of a coke oven, and belongs to the technical field of the utilization of the waste heat of the flue gas of the coke oven. The comprehensive utilization system comprises a power generating system formed by a coke oven pipeline, a waste heat boiler, a steam turbine and a power generator, wherein the steam turbine comprises a curtis stage and a pressure stage. The comprehensive utilization system is characterized in that a steam bypass is arranged at the curtis stage and the pressure stage at the middle part of the steam turbine; the steam bypass is connected to a backpressure steam turbine; and the backpressure steam turbine drags mechanical equipment connected with the backpressure steam turbine. By adopting the system, not only can the waste heat of the flue gas of the coke oven be recovered and utilized to generate power, but steam produced after the steam turbine part does work can be utilized to drag other equipment, thereby achieving the purposes of energy conservation and environmental protection.
Description
Technical field
The utility model relates to a kind of coke oven flue gas UTILIZATION OF VESIDUAL HEAT IN technical field, is that a kind of coke oven flue gas residual heat integrative utilizes system specifically.
Background technique
High-temperature coking is meant that raw coal is heated to the 950-1050 degree under the condition of secluding air, finally process coke through stages such as super-dry, pyrolysis, fusion, bonding, curing, contractions.In traditional coking process; Coke-stove gas directly is discharged in the atmosphere by chimney through bottom flue, waste gas exchange shutter, branch flue, main chimney flue after the high-temp waste gas that produces after the combustion chambers burn is reclaimed the part sensible heat of waste gas by checker brick through flue, regenerator then.Because the temperature of the waste gas of discharging from chimney is still very high, the direct discharging of these high-temp waste gas has caused destruction to environment, has accelerated greenhouse effect, and a large amount of heat energy that these high-temp waste gas contained simultaneously is also by in vain waste.
For solving above-mentioned energy waste problem, the coke oven flue gas cogeneration technology is grown up gradually, and this power generation system partly is made up of coke oven waste heat pipeline, exhaust heat boiler, steam turbine and generator etc.The coke oven flue gas waste heat is converted into electric energy, thereby reaches the purpose of energy-conserving and environment-protective.But the problem that exists in the reality is, on the one hand, the high temperature and high pressure steam major part that is produced by exhaust heat boiler is converted into mechanical energy through steam turbine, and then is converted in the process of electric energy by generator, and a part has been wasted in addition; In coke making process, need disintegrator that coal cinder is pulverized on the other hand; Afterheat generating system also needs cooling waterpump and induced draught fan; And the motor that drives disintegrator, cooling waterpump and induced draught fan is heavy-duty motor (450KW), and these motors need consume mass energy.
The model utility content
The technical assignment of the utility model is to provide a kind of coke oven flue gas residual heat integrative to utilize system to above-mentioned deficiency of the prior art; The waste heat that this system not only recycles coke oven flue gas generates electricity; But also the steam of steam turbine capable of using after partly doing work drags other machinery, thereby realizes the purpose of energy-conserving and environment-protective.
The utility model solves the technological scheme that its technical problem adopted: a kind of coke oven flue gas residual heat integrative utilizes system; Comprise the power generation system of forming by coke oven pipeline, exhaust heat boiler, steam turbine and generator; Described steam turbine comprises velocity-compounded stage and pressure level, it is characterized in that, at the velocity-compounded stage and the pressure level place at steam turbine middle part steam by-pass is set; Described steam by-pass is connected to back pressure turbine, and described back pressure turbine drags coupled machinery.
Described machinery is coal pulverizer, induced draught fan or water pump.
Superheated vapor gets into steam turbine and drives generator for electricity generation through velocity-compounded stage and pressure level workmanship, and energy remaining is converted into mechanical energy through back pressure turbine in the steam, and back pressure turbine directly drags machinery such as induced draught fan, coal pulverizer or water pump.
The utlity model has following outstanding beneficial effect: superheated vapor gets into steam turbine and has recycled most of waste heat energy through velocity-compounded stage and pressure level; Energy remaining is converted into mechanical energy through the utilization of back pressure turbine secondary recovery again in the steam, and the waste heat energy in the coke oven flue gas has obtained sufficient recycling, need not consume primary energy; Saved the energy; Reduced the enterprise production cost, reduced the pollution of coke oven flue gas simultaneously, protected environment environment; Help Sustainable Development of Enterprises, improved the comprehensive benefit of enterprise.
Description of drawings
Accompanying drawing 1 is the structure principle chart of the utility model.
Description of reference numerals: 1 coke oven, 2 exhaust heat boilers, 3 steam turbine, 4 generators, 5 back pressure turbines, 6 induced draught fans, 7 steam by-passes.
Embodiment
As shown in Figure 1, a kind of coke oven flue gas residual heat integrative utilizes system, comprises the existing power generation system of being made up of coke oven pipeline, exhaust heat boiler 2, steam turbine 3 and generator 4.The waste gas outlet of coke oven 1 is connected with exhaust heat boiler 2 through pipeline; Feedwater gets into exhaust heat boiler 2 through feed water pump; After waste heating, become superheated vapor; The steam (vapor) outlet of exhaust heat boiler is connected to steam turbine 3 through steam line, and superheated vapor gets into steam turbine and drives generator 4 generatings through velocity-compounded stage and pressure level workmanship.
Velocity-compounded stage and pressure level place at the steam turbine middle part are provided with steam by-pass 7, and described steam by-pass 7 is connected to back pressure turbine 5, and back pressure turbine 5 drags coupled machinery, and described machinery is coal pulverizer, induced draught fan or water pump.
Among Fig. 1, directly connect back pressure turbine 5 by steam by-pass 7, back pressure turbine 5 drags induced draught fan 6.
The waste gas outlet of coke oven 1 is connected with exhaust heat boiler 2 through pipeline; Get into exhaust heat boiler 2 through feed water pump, after heating, become superheated vapor, the steam (vapor) outlet of exhaust heat boiler 2 is connected to steam turbine 3 through steam line; Superheated vapor gets into steam turbine 3 through velocity-compounded stage and pressure level acting; Most of waste heat is converted into mechanical energy through steam turbine 3 and drives generator 4 generatings, and energy remaining is converted into mechanical energy through back pressure turbine 5 in the steam, directly drags induced draught fan 6.
Claims (2)
1. a coke oven flue gas residual heat integrative utilizes system; Comprise the power generation system of forming by coke oven pipeline, exhaust heat boiler, steam turbine and generator; Described steam turbine comprises velocity-compounded stage and pressure level, it is characterized in that, at the velocity-compounded stage and the pressure level place at steam turbine middle part steam by-pass is set; Described steam by-pass is connected to back pressure turbine, and described back pressure turbine drags coupled machinery.
2. coke oven flue gas residual heat integrative according to claim 1 utilizes system, it is characterized in that, described machinery is coal pulverizer, induced draught fan or water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203972030U CN202228140U (en) | 2011-10-18 | 2011-10-18 | Comprehensive utilization system of waste heat of flue gas of coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203972030U CN202228140U (en) | 2011-10-18 | 2011-10-18 | Comprehensive utilization system of waste heat of flue gas of coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228140U true CN202228140U (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203972030U Expired - Fee Related CN202228140U (en) | 2011-10-18 | 2011-10-18 | Comprehensive utilization system of waste heat of flue gas of coke oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228140U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777875A (en) * | 2012-08-01 | 2012-11-14 | 中广核工程有限公司 | Steam converter system of nuclear power plant |
| CN107218092A (en) * | 2017-05-31 | 2017-09-29 | 西安石大能源股份有限公司 | Waste heat power generation equipment |
| CN108469017A (en) * | 2018-04-04 | 2018-08-31 | 浙江巨化热电有限公司 | A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device and its method |
-
2011
- 2011-10-18 CN CN2011203972030U patent/CN202228140U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777875A (en) * | 2012-08-01 | 2012-11-14 | 中广核工程有限公司 | Steam converter system of nuclear power plant |
| CN107218092A (en) * | 2017-05-31 | 2017-09-29 | 西安石大能源股份有限公司 | Waste heat power generation equipment |
| CN107218092B (en) * | 2017-05-31 | 2023-03-10 | 西安石大能源股份有限公司 | Waste heat power generation equipment |
| CN108469017A (en) * | 2018-04-04 | 2018-08-31 | 浙江巨化热电有限公司 | A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device and its method |
| CN108469017B (en) * | 2018-04-04 | 2023-09-15 | 浙江巨化热电有限公司 | Comprehensive utilization device and method for back pressure steam turbine of double-drag electric pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20121018 |