CN203443377U - Improved lime kiln waste gas residual heat power generation system - Google Patents
Improved lime kiln waste gas residual heat power generation system Download PDFInfo
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- CN203443377U CN203443377U CN201320425689.3U CN201320425689U CN203443377U CN 203443377 U CN203443377 U CN 203443377U CN 201320425689 U CN201320425689 U CN 201320425689U CN 203443377 U CN203443377 U CN 203443377U
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- 239000002912 waste gas Substances 0.000 title abstract description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 title abstract 3
- 235000011941 Tilia x europaea Nutrition 0.000 title abstract 3
- 239000004571 lime Substances 0.000 title abstract 3
- 238000010248 power generation Methods 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 46
- 230000008676 import Effects 0.000 claims description 38
- 239000002918 waste heat Substances 0.000 claims description 17
- 210000004907 gland Anatomy 0.000 claims description 6
- 239000003517 fume Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 abstract 2
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000009102 absorption Effects 0.000 description 5
- 238000010521 absorption reaction Methods 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
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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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
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Abstract
The utility model relates to an improved lime kiln waste gas residual heat power generation system. The improved lime kiln waste gas residual heat power generation system comprises a residual heat boiler, a steam turbine, a power generator, a steam condenser, a cooling tower, a condensation water pump, a deaerization plant, a high-pressure steam pocket, a low-pressure steam pocket and a boiler water feeding pump, wherein the residual heat boiler is internally and sequentially provided with a high-pressure super-heater, a high-pressure evaporator, a high-temperature economizer, a low-pressure super-heater, a low-pressure evaporator and a low-temperature economizer from top to bottom; and the inlet of the high-pressure super-heater is connected with a steam conveying pipe of a converter and the outlet of the low-pressure super-heater is connected with a low-pressure steam inlet of the steam turbine. With the adoption of a double-pressure steam system, water and steam of the low-pressure steam pocket absorb heat at a low-temperature smoke section, water and steam of the high-pressure steam pocket absorb heat at a high-temperature smoke section, so that a heat-transmission temperature difference is reduced and the entropy generation is reduced; and meanwhile, high-temperature steam parameters are increased, the power capability of the steam is improved and the generating capacity is increased.
Description
Technical field
The utility model relates to a kind of electricity generation system, specifically a kind of improved limekiln exhaust gas afterheat generating system.
Background technology
Existing limekiln exhaust gas afterheat generating system as shown in Figure 1, comprise gas fume valve 2, waste heat boiler 6, boiler feed pump 15, oxygen-eliminating device 14, steam turbine 9, generator 10, condenser 11, cooling tower 12, boiler-steam dome 8, in waste heat boiler 6, be provided with successively from top to bottom superheater 3, evaporimeter 4 and economizer 5.
Waste heat boiler 6 import waste gas are from limekiln preheater, approximately 350～400 ℃ of intake air temperature, this waste gas enters waste heat boiler 6, by being arranged in superheater 3, evaporimeter 4, the economizer 5 in boiler, progressively be cooled to 160～180 ℃, these waste gas are discharged in atmosphere by chimney 1 through air-introduced machine 7.
After economizer 5 heating of getting to waste heat boiler 6 through boiler feed pump 15 from the boiler feedwater of oxygen-eliminating device 14, enter drum 8, water in drum 8 is got back in drum 8 after evaporimeter 4 heat absorption boilings by natural circulation mode, from the saturated vapor of separating in drum 8, after superheater 3 heat absorptions, become superheated steam, then enter steam turbine 9 expansion actings, after condenser 11 is cooling, become condensate water, by condensate pump 13, get to oxygen-eliminating device 14.
There is following problem in existing this sintering waste heat generating system:
Vapour system is single pressing system, and heat transfer temperature difference is large, and system entropy increases, and energy is not better utilized.
Utility model content
The purpose of this utility model is to propose a kind of improved limekiln exhaust gas afterheat generating system, and it can reduce entropy and increase, and the flow of steam turbine import superheated steam is improved, and can increase generating capacity.
In order to achieve the above object, the technical scheme that the utility model adopts is as follows:
A kind of improved limekiln exhaust gas afterheat generating system, it comprises waste heat boiler, steam turbine, generator, condenser, cooling tower, condensate pump, oxygen-eliminating device, high pressure drum, low-pressure drum and boiler feed pump, waste heat boiler is provided with and the air inlet of gas inlet channel connection and the gas outlet being communicated with chimney, has successively high-pressure superheater, high pressure evaporator, high-temperature economizer, low-pressure superheater, low pressure evaporator and low-level (stack-gas) economizer in waste heat boiler from top to bottom; The outlet of high-pressure superheater is connected with the high-pressure admission mouth of steam turbine, and the import of high-pressure superheater is connected with the steam steam transmitting pipe of a converter, and the import of high-pressure superheater is also connected with the first outlet of high pressure drum; The outlet of high pressure evaporator is connected with the first import of high pressure drum, and the import of high pressure evaporator is connected with the second outlet of high pressure drum; The outlet of high-temperature economizer is connected with the second import of high pressure drum, and the import of high-temperature economizer is connected with the outlet of low-level (stack-gas) economizer; The outlet of low-pressure superheater is connected with the low pressure admission mouth of steam turbine, and the import of low-pressure superheater is connected with the first outlet of low-pressure drum; The import of low pressure evaporator is connected with the second outlet of low-pressure drum, and the outlet of low pressure evaporator is connected with the first import of low-pressure drum; The import of low-level (stack-gas) economizer is connected with boiler feedwater delivery side of pump, and the outlet of low-level (stack-gas) economizer is also connected with the second import of low-pressure drum, and boiler feedwater delivery side of pump is also connected with the feed-water deaerator of converter by a water-supply-pipe.
Preferably, gas inlet passage is communicated with chimney by a tube connector, in gas inlet passage, chimney and tube connector, is equipped with gas fume valve.
Preferably, before chimney, be provided with air-introduced machine.
Preferably, steam turbine is connected with generator; The steam drain of steam turbine is connected with condenser import, and condenser is connected with cooling tower by a circulating cooling water pump.
Preferably, condenser is connected with gland steam heater by a condensate pump, and gland steam heater is connected with boiler feed pump by oxygen-eliminating device.
The utlity model has following beneficial effect:
Adopt two vapour systems of pressing, a boiler feed pump feedwater part is out got back to the feed-water deaerator of converter, another part is first after low-level (stack-gas) economizer heat absorption, wherein major part enters high-temperature economizer continuation heat absorption, then enter high pressure drum, fraction enters low-pressure drum, the water and steam of low-pressure drum absorbs heat in low-temperature flue gas section, the water and steam of high temperature drum absorbs heat in high-temperature flue gas section, reduce heat transfer temperature difference, reduced entropy product, increased high steam parameter simultaneously, the acting ability that has improved steam, has increased generated energy.In addition, residue steam directly enters high temperature superheater, has improved superheat steam flow, has increased generating capacity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the limekiln exhaust gas afterheat generating system of prior art;
Fig. 2 is the structural representation of the improved limekiln exhaust gas afterheat generating system of the utility model preferred embodiment.
The specific embodiment
Below, by reference to the accompanying drawings and the specific embodiment, the utility model is described further.
As shown in Figure 2, a limekiln exhaust gas afterheat generating system, it comprises waste heat boiler 18, steam turbine 9, generator 10, condenser 11, cooling tower 12, condensate pump 13, oxygen-eliminating device 14, high pressure drum 28, low-pressure drum 29 and boiler feed pump 15.
Waste heat boiler 18 is provided with the air inlet being communicated with gas inlet passage 19 and the gas outlet being communicated with chimney 1, has successively high-pressure superheater 22, high pressure evaporator 23, high-temperature economizer 24, low-pressure superheater 25, low pressure evaporator 26 and low-level (stack-gas) economizer 27 in waste heat boiler 18 from top to bottom.
The outlet of high-pressure superheater 22 is connected with the high-pressure admission mouth of steam turbine 9, and the import of high-pressure superheater 22 is connected with the steam steam transmitting pipe 20 of a converter (figure does not draw), and the import of high-pressure superheater 22 is also connected with the first outlet of high pressure drum 28.
The outlet of high pressure evaporator 23 is connected with the first import of high pressure drum 28, and the import of high pressure evaporator 23 is connected with the second outlet of high pressure drum 28.
The outlet of high-temperature economizer 24 is connected with the second import of high pressure drum 28, and the import of high-temperature economizer 24 is connected with the outlet of low-level (stack-gas) economizer 27.
The outlet of low-pressure superheater 25 is connected with the low pressure admission mouth of steam turbine 9, and the import of low-pressure superheater 25 is connected with the first outlet of low-pressure drum 29.
The import of low pressure evaporator 26 is connected with the second outlet of low-pressure drum 29, and the outlet of low pressure evaporator 26 is connected with the first import of low-pressure drum 29.
The import of low-level (stack-gas) economizer 27 is connected with the outlet of boiler feed pump 15, and the outlet of low-level (stack-gas) economizer 27 is also connected with the second import of low-pressure drum 29, and the outlet of boiler feed pump 15 is also connected with the feed-water deaerator of converter by a water-supply-pipe 21.
Gas inlet passage 19 is communicated with chimney 1 by a tube connector, in gas inlet passage 19, chimney 1 and tube connector, is equipped with gas fume valve 2.Before chimney 1, be provided with air-introduced machine 7.
Steam turbine 9 is connected with generator 10; The steam drain of steam turbine 9 is connected with condenser 11 imports, and condenser 11 is connected with cooling tower 12 by a circulating cooling water pump 16.Condenser 11 is connected with gland steam heater 17 by a condensate pump 13, and gland steam heater 17 is connected with boiler feed pump 15 by oxygen-eliminating device 14.
The principle of the present embodiment is as follows:
Limekiln exhaust gas temperature is generally at 350～400 ℃, flow through successively from top to bottom high-pressure superheater 22, high pressure evaporator 23, high-temperature economizer 24, low-pressure superheater 25, low pressure evaporator 26, low-level (stack-gas) economizer 27, the temperature that waste gas goes out waste heat boiler 18 is generally 130～140 ℃.
The low-level (stack-gas) economizer 27 rear minute two-way ，Yi roads of heating of getting to waste heat boiler 18 by boiler feed pump 15 from the boiler feedwater of oxygen-eliminating device 14 enter low-pressure drum 29, and another road enters high-temperature economizer 24.Water in high pressure drum 28 and low-pressure drum 29 is respectively hung oneself after the 26 heat absorption boilings of high pressure evaporator 23 and low pressure evaporator and is arrived drum separately by natural circulation mode, from high pressure drum 28, steam appendix 20 and low-pressure drum 29 saturated vapor out after superheater is separately overheated, high pressure superheated steam and low-pressure superheated steam have been become, enter respectively the high and low pressure air intake of steam turbine 9 in the interior expansion acting of steam turbine 9, exhaust steam after acting, through the cooling condensate water that becomes of condenser 14, is got to oxygen-eliminating device 14 by condensate pump 13 it.
Owing to having adopted dual pressure system, the water and steam of low-pressure drum absorbs heat in low-temperature flue gas section, the water and steam of high temperature drum absorbs heat in high-temperature flue gas section, reduced heat transfer temperature difference, reduced entropy product, meanwhile, due to pipe network saturated vapor more than needed, directly to enter high temperature superheater overheated, increase the high steam flow that enters steam turbine, increased generated energy.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and distortion all should belong to the protection domain of the utility model claim within.
Claims (5)
1. an improved limekiln exhaust gas afterheat generating system, it comprises waste heat boiler, steam turbine, generator, condenser, cooling tower, condensate pump, oxygen-eliminating device and boiler feed pump, it is characterized in that, this improved limekiln exhaust gas afterheat generating system also comprises high pressure drum and low-pressure drum, waste heat boiler is provided with and the air inlet of gas inlet channel connection and the gas outlet being communicated with chimney, has successively high-pressure superheater, high pressure evaporator, high-temperature economizer, low-pressure superheater, low pressure evaporator and low-level (stack-gas) economizer in waste heat boiler from top to bottom; The outlet of high-pressure superheater is connected with the high-pressure admission mouth of steam turbine, and the import of high-pressure superheater is connected with the steam steam transmitting pipe of a converter, and the import of high-pressure superheater is also connected with the first outlet of high pressure drum; The outlet of high pressure evaporator is connected with the first import of high pressure drum, and the import of high pressure evaporator is connected with the second outlet of high pressure drum; The outlet of high-temperature economizer is connected with the second import of high pressure drum, and the import of high-temperature economizer is connected with the outlet of low-level (stack-gas) economizer; The outlet of low-pressure superheater is connected with the low pressure admission mouth of steam turbine, and the import of low-pressure superheater is connected with the first outlet of low-pressure drum; The import of low pressure evaporator is connected with the second outlet of low-pressure drum, and the outlet of low pressure evaporator is connected with the first import of low-pressure drum; The import of low-level (stack-gas) economizer is connected with boiler feedwater delivery side of pump, and the outlet of low-level (stack-gas) economizer is also connected with the second import of low-pressure drum, and boiler feedwater delivery side of pump is also connected with the feed-water deaerator of converter by a water-supply-pipe.
2. improved limekiln exhaust gas afterheat generating system as claimed in claim 1, is characterized in that, gas inlet passage is communicated with chimney by a tube connector, in gas inlet passage, chimney and tube connector, is equipped with gas fume valve.
3. improved limekiln exhaust gas afterheat generating system as claimed in claim 1, is characterized in that, is provided with air-introduced machine before chimney.
4. improved limekiln exhaust gas afterheat generating system as claimed in claim 1, is characterized in that, steam turbine is connected with generator; The steam drain of steam turbine is connected with condenser import, and condenser is connected with cooling tower by a circulating cooling water pump.
5. improved limekiln exhaust gas afterheat generating system as claimed in claim 1, is characterized in that, condenser is connected with gland steam heater by a condensate pump, and gland steam heater is connected with boiler feed pump by oxygen-eliminating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320425689.3U CN203443377U (en) | 2013-07-17 | 2013-07-17 | Improved lime kiln waste gas residual heat power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320425689.3U CN203443377U (en) | 2013-07-17 | 2013-07-17 | Improved lime kiln waste gas residual heat power generation system |
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| CN203443377U true CN203443377U (en) | 2014-02-19 |
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| CN201320425689.3U Expired - Lifetime CN203443377U (en) | 2013-07-17 | 2013-07-17 | Improved lime kiln waste gas residual heat power generation system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836604A (en) * | 2014-03-03 | 2014-06-04 | 上海宝钢节能环保技术有限公司 | Novel waste heat recovery combined heating and power system |
| CN104832228A (en) * | 2015-04-23 | 2015-08-12 | 周绍启 | Low-grade energy and purified water recovery system in natural-gas power generation |
| CN105135894A (en) * | 2015-07-03 | 2015-12-09 | 中信重工机械股份有限公司 | Device and technique using rotary kiln barrel heat to generate power |
| CN105571335A (en) * | 2014-10-15 | 2016-05-11 | 广东华信达节能环保有限公司 | Afterheat recycling (power generation) device |
| CN111479985A (en) * | 2017-12-13 | 2020-07-31 | 维美德技术有限公司 | Method and system for recovering thermal energy in a system comprising a chemical recovery boiler and a lime kiln |
| CN117968402A (en) * | 2024-03-20 | 2024-05-03 | 中圣科技(江苏)股份有限公司 | Waste heat recycling system of graphitization furnace |
-
2013
- 2013-07-17 CN CN201320425689.3U patent/CN203443377U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836604A (en) * | 2014-03-03 | 2014-06-04 | 上海宝钢节能环保技术有限公司 | Novel waste heat recovery combined heating and power system |
| CN103836604B (en) * | 2014-03-03 | 2016-01-27 | 上海宝钢节能环保技术有限公司 | A kind of waste heat recovery cogeneration system |
| CN105571335A (en) * | 2014-10-15 | 2016-05-11 | 广东华信达节能环保有限公司 | Afterheat recycling (power generation) device |
| CN104832228A (en) * | 2015-04-23 | 2015-08-12 | 周绍启 | Low-grade energy and purified water recovery system in natural-gas power generation |
| CN104832228B (en) * | 2015-04-23 | 2019-10-22 | 周绍启 | Natural gas power middle-low grade energy and pure water reclamation system |
| CN105135894A (en) * | 2015-07-03 | 2015-12-09 | 中信重工机械股份有限公司 | Device and technique using rotary kiln barrel heat to generate power |
| CN111479985A (en) * | 2017-12-13 | 2020-07-31 | 维美德技术有限公司 | Method and system for recovering thermal energy in a system comprising a chemical recovery boiler and a lime kiln |
| CN117968402A (en) * | 2024-03-20 | 2024-05-03 | 中圣科技(江苏)股份有限公司 | Waste heat recycling system of graphitization furnace |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |
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| CX01 | Expiry of patent term |