CN202596823U - Open normal-reverse circulation coupling electricity, heat and cold triple co-generation system based on gas turbine - Google Patents
Open normal-reverse circulation coupling electricity, heat and cold triple co-generation system based on gas turbine Download PDFInfo
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- CN202596823U CN202596823U CN2012200809173U CN201220080917U CN202596823U CN 202596823 U CN202596823 U CN 202596823U CN 2012200809173 U CN2012200809173 U CN 2012200809173U CN 201220080917 U CN201220080917 U CN 201220080917U CN 202596823 U CN202596823 U CN 202596823U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
-
- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model discloses an open normal-reverse circulation coupling electricity heat and cold triple co-generation system based on a gas turbine. The open normal-reverse circulation coupling electricity heat and cold triple co-generation system comprises a gas compressor, a combustor, a high pressure turbine, a generator, a waste heat boiler, a smoke reheating device, a smoke cooler, a low pressure turbine and a cooling heat exchanger, wherein a smoke output end of the high pressure turbine is connected with a smoke input end of the waste heat boiler; a steam output end of the waste heat boiler is connected with a steam input end of the combustor; a smoke output end of the waste heat boiler is connected with a hot smoke input end of the smoke reheating device; a smoke output end of the smoke reheating device is connected with a smoke input end of the smoke cooler; a smoke input end of the smoke cooler is connected with an input end of the low pressure turbine; a smoke output end of the low pressure turbine is connected with a smoke input end of the cooling heat exchanger; and a smoke output end of the cooling heat exchanger is connected with a cold smoke input end of the smoke reheating device. The open normal-reverse circulation coupling electricity heat and cold triple co-generation system can improve primary energy utilization rate, and ensure self-balance of recycle water and consumed water.
Description
Technical field
The utility model relates to gas turbine technology, is specifically related to based on the just contrary circulation coupling electrothermal cold triple supply system of the open type of gas turbine.
Background technique
Gas turbine comprises gas compressor, firing chamber and smoke gas turbine (abbreviation turbine), and the pressurized air output terminal of gas compressor links to each other with the air input end of firing chamber, and the flue gas output terminal of firing chamber links to each other with the input end of high pressure turbine.Gas compressor sucks air and continuously with its compression (boost and heat up simultaneously) from atmosphere; Air after the compression gets into the firing chamber, and the fuel mix after-combustion with spraying into becomes high-temperature flue gas; Flow into expansion working in the turbine (step-down is lowered the temperature simultaneously) immediately; The turbine output shaft rotates, and drives compressor impeller and rotates together, and complementary work also can connect the generator input shaft and produce electric power as the output mechanical work of gas turbine.
For making full use of the exhaust heat of gas turbine, generally waste heat recovering device is set at the gas turbine rear portion, be used to produce steam, hot water etc., last flue gas is discharged about 100 ℃.Because working medium communicates with ambient atmosphere in cyclic process, so be open cycle.
The only a little higher than atmospheric pressure of pressure of the flue gas of discharging from turbine generally speaking, (the raised area only is used to overcome the exhaust resistance that parts such as rear portion waste heat recovering device produce).At this moment, gas turbine is a mechanical energy with the thermal power transfer that fuel combustion discharges, and is forward (hot machine) circulation.When heat? recovery that can not be converted into mechanical energy of from turbine, discharging and outside heat supply, this moment, whole device promptly constituted the cogeneration system based on gas turbine.Further again; Utilize the heat in the combustion turbine exhaustion, also can directly or indirectly drive reverse refrigeration cycle (like smoke absorption formula refrigerator, steam absorption refrigerator etc., the chilled water that produces about 7 ℃ is used for refrigeration); Realize external cooling; This moment, whole system promptly constituted hot, cold, electric triple combined supply system on the basis of cogeneration system, promptly was equivalent under the open type forward circulation of gas turbine, construct a reverse refrigeration cycle of enclosed again, formed the supply system of energy cascade utilization.Yet existing heat, cold, the heat of electric triple combined supply system, electricity, cold output ratio immobilize underaction.
In addition, the steam-recycling that produces in the waste heat recovering device in the firing chamber, is formed the steam-recycling circulation, working medium is increased, improve than merit; And the air wetting burning has reduced the NOx discharging.But because air wetting, water (steam) is followed smoke evacuation and together is discharged to atmosphere, and system needs to replenish constantly new water, needs to consume big water gaging, reach having high input of recycle-water and water consumption self balancing, and difficulty is high.Simultaneously, because the flue gas dew point temperature is low, the latent heat total amount that flue gas is emitted in the water callback course is little, and value is low, has finally also caused lower primary energy ratio.
The model utility content
The utility model technical problem to be solved just provides a kind of just contrary circulation coupling electrothermal cold triple supply system of the open type based on gas turbine that improves primary energy ratio and heat, electricity, cold output than flexibility and changeability.
For solving the problems of the technologies described above, the technological scheme that the utility model is taked is following:
The just contrary circulation coupling electrothermal cold triple supply system of a kind of open type based on gas turbine; Comprise gas compressor, firing chamber, high pressure turbine and generator; The pressurized air output terminal of said gas compressor links to each other with the air input end of firing chamber; The flue gas output terminal of said firing chamber links to each other with the input end of high pressure turbine; The output shaft of said high pressure turbine links to each other with the impeller shaft of gas compressor, the input shaft of generator respectively, it is characterized in that: also comprise exhaust heat boiler, flue gas recuperator, gas cooler, low pressure turbine and refrigerated heat exchanger, the flue gas output terminal of said high pressure turbine links to each other with the flue gas input end of exhaust heat boiler; The steam output end of said exhaust heat boiler links to each other with the steam input end of firing chamber, and the flue gas output terminal of this exhaust heat boiler links to each other with the hot flue gas input end of flue gas recuperator; The flue gas output terminal of said flue gas recuperator links to each other with the flue gas input end of gas cooler; The flue gas output terminal of said gas cooler links to each other with the input end of low pressure turbine; The flue gas output terminal of said low pressure turbine links to each other with the flue gas input end of refrigerated heat exchanger, the cold delivery outlet output cold of refrigerated heat exchanger; The flue gas output terminal of said refrigerated heat exchanger links to each other with the Cold fume input end of flue gas recuperator.
After the air after the gas compressor compression gets into firing chamber formation high-temperature flue gas, get into high pressure turbine acting and rotation and drive generator for electricity generation; Through the high-temperature flue gas of high pressure turbine output the boiler feed water of exhaust heat boiler is heated into superheated vapor, this superheated vapor through exhaust heat boiler steam output end output and inject the firing chamber, to improve the acting ability of gas turbine; The lower flue gas of flue gas input flue gas recuperator heating and cooling heat exchanger refrigeration back temperature of exhaust heat boiler output is so that enter atmosphere; Flue gas through the output of flue gas recuperator gets into the gas cooler cooling, is used for flue gas is cooled to the near-ambient temperature; Flue gas through gas cooler output gets into low pressure turbine, and the acting output low-temperature flue gas that expands gets into refrigerated heat exchanger, through the cold delivery outlet output cold of refrigerated heat exchanger.
On the basis of the above, the utility model can be done following improvement:
The said exhaust heat boiler of the utility model, flue gas recuperator, gas cooler are equipped with condensate water recovery device, so that the water vapor in the flue gas is reclaimed at the water that exhaust heat boiler, flue gas recuperator, gas cooler condense into.
The utility model also comprises cooling water cooler, and the inlet of this cooling water cooler links to each other with the coolant outlet of gas cooler, and the outlet of this cooling water cooler links to each other with the cooling water inlet of gas cooler, so that recycle cooling water.
The utility model also comprises the steam filter; This steam filter is located between gas cooler and the low pressure turbine; The flue gas output terminal of said gas cooler links to each other with the input end of low pressure turbine through behind the water droplet filter; So that filter the steam that gets in the preceding flue gas of low pressure turbine, reduce the infringement of steam to turbine.
The said exhaust heat boiler of the utility model comprises superheater, vaporizer, the economizer that links to each other successively; The flue gas output terminal of said high pressure turbine links to each other with the flue gas input end of superheater; The steam output end of said superheater links to each other with the steam input end of firing chamber, and the flue gas output terminal of said economizer links to each other with the hot flue gas input end of flue gas recuperator.
Compared with prior art, the utlity model has following advantage:
The utility model can be in a gas turbine be realized electricity, heat, cold triple supply simultaneously, and the cold that provides of device can be far below ambient temperature simultaneously, and heat, electric, cold output ratio modulation flexibly.Because just contrary circulation coupling, high efficiente callback steam latent heat from flue gas can be higher than 100% based on the Systems Theory primary energy ratio of fuel higher calorific value HHV, reclaims the water yield and also can surpass firing chamber steam injection amount, has guaranteed recycle-water and water consumption self balancing.
Description of drawings
Fig. 1 is the workflow schematic representation of the utility model triple combined supply system;
Fig. 2 is the connection schematic representation of the utility model triple combined supply system.
Among the figure: 1, gas compressor, 2, the firing chamber, 3, high pressure turbine, 4, superheater, 5, vaporizer; 6, economizer, 7, gas cooler, 8, the steam filter, 9, low pressure turbine, 10, refrigerated heat exchanger; 11, water pump, 12, cooling water cooler, 13, generator, 14, the flue gas recuperator.
Embodiment
The just contrary circulation coupling electrothermal cold triple supply system of open type based on gas turbine as shown in Figure 1; Comprise gas compressor 1, firing chamber 2, high pressure turbine 3, generator 1313, exhaust heat boiler, flue gas recuperator 14, gas cooler 7, low pressure turbine 9 and refrigerated heat exchanger 10; The pressurized air output terminal of gas compressor 1 links to each other with the air input end of firing chamber 2; The flue gas output terminal of firing chamber 2 links to each other with the input end of high pressure turbine 3; The output shaft of high pressure turbine 3 links to each other with the impeller shaft of gas compressor 1, the input shaft of generator 13 respectively; The output shaft of high pressure turbine 3 drives the impeller shaft of gas compressor 1, the input shaft rotation of generator 13 simultaneously, and the flue gas output terminal of high pressure turbine 3 links to each other with the flue gas input end of exhaust heat boiler; The steam output end of exhaust heat boiler links to each other with the steam input end of firing chamber 2, and the flue gas output terminal of this exhaust heat boiler links to each other with the hot flue gas input end of flue gas recuperator 14; The flue gas output terminal of flue gas recuperator 14 links to each other with the flue gas input end of gas cooler 7; The flue gas output terminal of gas cooler 7 links to each other with the input end of low pressure turbine 9; The flue gas output terminal of low pressure turbine 9 links to each other with the flue gas input end of refrigerated heat exchanger 10, the cold delivery outlet output cold of refrigerated heat exchanger 10; The flue gas output terminal of refrigerated heat exchanger 10 links to each other with the Cold fume input end of flue gas recuperator 14, and flue gas recuperator 14 is used to reheat the Cold fume of refrigerated heat exchanger 10 outputs.
Wherein, Exhaust heat boiler comprises superheater 4, vaporizer 5, the economizer 6 that links to each other successively; The flue gas output terminal of high pressure turbine 3 links to each other with the flue gas input end of superheater 4; The steam output end of superheater 4 links to each other with the steam input end of firing chamber 2, and the flue gas output terminal of economizer 6 links to each other with the hot flue gas input end of flue gas recuperator 14.The high-temperature flue gas of high pressure turbine 3 outputs is delivered to the flue gas input end of exhaust heat boiler, i.e. the flue gas input end of superheater 4.Boiler feed water at first gets into economizer 6; Water absorbs heat and heats up in economizer 6; Get into vaporizer 5 absorption heats behind the formation hot water and begin to steam, the steam water interface that in vaporizer 5, flows is behind carbonated drink separation and formation saturated vapour, and saturated vapour gets into superheater 4; Absorb heat and make saturated vapour become superheated vapor, superheated vapor is used for external heat supply.
In exhaust heat boiler, flue gas recuperator 14, gas cooler 7, be equipped with condensate water recovery device; So that the water vapor in the flue gas is reclaimed at the water that exhaust heat boiler, flue gas recuperator 14, gas cooler 7 condense into, also discharge a large amount of latent heat in the water vapor condensation process simultaneously.
Native system also is provided with the cooling water cooler 12 that is used to cool off cooling water; The inlet of this cooling water cooler 12 links to each other with the coolant outlet of gas cooler 7; The outlet of this cooling water cooler 12 links to each other with the cooling water inlet of gas cooler 7; With water pump 11 as power, so that recycle cooling water.
Between gas cooler 7 and low pressure turbine 9, also be provided with steam filter 8; Be used for filtering the steam of flue gas; The flue gas output terminal of gas cooler 7 links to each other with the input end of low pressure turbine 9 through behind the water droplet filter; So that filter the steam that gets in the low pressure turbine 9 preceding flue gases, reduce the infringement of steam to turbine.
The working principle of native system is: 1) turbine expansion cooling: the flue gas acting of in turbine, expanding, be accompanied by the decline of pressure, and the temperature of flue gas also descends.When the inlet flue gas parameter is 20 ℃/4atm, the turbine expansion ratio is 4, and isentropic efficiency is 90% o'clock, and the flue-gas temperature behind the low pressure turbine is about-60 ℃.Under the similarity condition, the inlet flue gas parameter is that 20 ℃/10atm, turbine expansion ratio are 10 o'clock, and the flue-gas temperature behind the low pressure turbine can reach-100 ℃ approximately.2) flue gas condensing: when flue gas descended because of the heat exchange temperature, the water vapour in the flue gas was discharged a large amount of latent heat by partial condensation in the condensation process.Simultaneously, flue gas pressures raises, and dew point temperature rises, and the flue gas dew point temperature raises, and the condensation heat release also can be used effectively.
Expand into through the high pressure turbine flue gas and to be higher than the atmospheric pressure level; Continue to expand into atmospheric pressure through low pressure turbine; Exhaust heat boiler recovery high pressure turbine exhaust gas heat is set behind high pressure turbine simultaneously to be used for heat supply or to improve combustion machine acting ability; And gas cooler is set makes flue gas before getting into low pressure turbine, drop to the near-ambient temperature levels, make flue gas its temperature after continuing to expand into atmospheric pressure can drop to below the ambient temperature through low pressure turbine, the flue gas cold can be used for refrigeration.Through said process, general gas turbine heat machine circulation is split into positive thermotropism machine circulation, two mutual open type thermodynamic cycles to coupling of reverse refrigeration cycle, in a gas turbine, realized heat, electricity, cold triple supply simultaneously.Simultaneously, during owing to heat exchange between the high and low pressure turbine, flue gas pressures is high than normal pressure; The flue gas dew point temperature rises, and flue gas begins condensation when higher temperature, and the water yield was big when flue gas was cooled to same temperature; The flue gas dew point temperature raises, and the condensation heat release also can be used effectively.
In addition, can make its external heating load and generated energy to change each other through adjustment steam injection amount, side the opposing party for a long time be few, and heat, electricity, cold output ratio be modulation flexibly, has certain flexibility ratio, and can change the energy supply total amount through the adjustment fuel feed.Under the ISO condition; Be 30 in the gas compressor pressure ratio, the combustor exit temperature be 1280 ℃, cooling air volume be the gas compressor total discharge 12%, the superheated vapor parameter is that 445 ℃/3.82MPa, high pressure turbine expand into 4 barometric pressure, the low pressure turbine inlet flue gas are cooled to calculate device water yield all greater than the steam injection amount under 20 ℃ the situation; Flue-gas temperature behind the low pressure turbine reaches-60 ℃ approximately.When the whole heat supply of superheated vapor, it is about 21%, 8%, 80% that the ratio that the electricity that device produces, hot and cold power and fuel are imported thermal power reaches respectively, and promptly primary energy ratio can reach about 109% (LHV); When superheated vapor 50% heat supply, 50% re-injection firing chamber, it is about 29%, 6%, 40% that the ratio that the electricity that device produces, hot and cold power and fuel are imported thermal power reaches respectively, and promptly primary energy ratio can reach about 75% (LHV).According to the difference that the gas turbine parameter is selected, the flue-gas temperature in these three combined supply apparatus behind the yield ratio of each energy, primary energy ratio, the low pressure turbine also can be different.
The mode of execution of the utility model is not limited thereto; Foregoing according to the utility model; Utilize the ordinary skill knowledge and the customary means of related domain; Do not breaking away under the above-mentioned basic fundamental thought of the utility model prerequisite, the utility model can also be made modification, replacement or the change of other various ways, all drops within the utility model rights protection scope.
Claims (5)
1. one kind based on the just contrary circulation coupling electrothermal cold triple supply system of the open type of gas turbine; Comprise gas compressor, firing chamber, high pressure turbine and generator; The pressurized air output terminal of said gas compressor links to each other with the air input end of firing chamber; The flue gas output terminal of said firing chamber links to each other with the input end of high pressure turbine; The output shaft of said high pressure turbine links to each other with the impeller shaft of gas compressor, the input shaft of generator respectively, it is characterized in that: also comprise exhaust heat boiler, flue gas recuperator, gas cooler, low pressure turbine and refrigerated heat exchanger, the flue gas output terminal of said high pressure turbine links to each other with the flue gas input end of exhaust heat boiler; The steam output end of said exhaust heat boiler links to each other with the steam input end of firing chamber, and the flue gas output terminal of this exhaust heat boiler links to each other with the hot flue gas input end of flue gas recuperator; The flue gas output terminal of said flue gas recuperator links to each other with the flue gas input end of gas cooler; The flue gas output terminal of said gas cooler links to each other with the input end of low pressure turbine; The flue gas output terminal of said low pressure turbine links to each other with the flue gas input end of refrigerated heat exchanger, the cold delivery outlet output cold of refrigerated heat exchanger, and the flue gas output terminal of said refrigerated heat exchanger links to each other with the Cold fume input end of flue gas recuperator.
2. the just contrary circulation coupling electrothermal cold triple supply system of the open type based on gas turbine according to claim 1, it is characterized in that: said exhaust heat boiler, flue gas recuperator, gas cooler are equipped with condensate water recovery device.
3. the just contrary circulation coupling electrothermal cold triple supply system of the open type based on gas turbine according to claim 1; It is characterized in that: also comprise cooling water cooler; The inlet of this cooling water cooler links to each other with the coolant outlet of gas cooler, and the outlet of this cooling water cooler links to each other with the cooling water inlet of gas cooler.
4. the just contrary circulation coupling electrothermal cold triple supply system of the open type based on gas turbine according to claim 1; It is characterized in that: also comprise the steam filter; This steam filter is located between gas cooler and the low pressure turbine, and the flue gas output terminal of said gas cooler links to each other with the input end of low pressure turbine through behind the water droplet filter.
5. according to the just contrary circulation coupling electrothermal cold triple supply system of each described open type of claim 1-4 based on gas turbine; It is characterized in that: said exhaust heat boiler comprises superheater, vaporizer, the economizer that links to each other successively; The flue gas output terminal of said high pressure turbine links to each other with the flue gas input end of superheater; The steam output end of said superheater links to each other with the steam input end of firing chamber, and the flue gas output terminal of said economizer links to each other with the hot flue gas input end of flue gas recuperator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200809173U CN202596823U (en) | 2012-03-06 | 2012-03-06 | Open normal-reverse circulation coupling electricity, heat and cold triple co-generation system based on gas turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012200809173U CN202596823U (en) | 2012-03-06 | 2012-03-06 | Open normal-reverse circulation coupling electricity, heat and cold triple co-generation system based on gas turbine |
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| CN202596823U true CN202596823U (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200809173U Withdrawn - After Issue CN202596823U (en) | 2012-03-06 | 2012-03-06 | Open normal-reverse circulation coupling electricity, heat and cold triple co-generation system based on gas turbine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606237A (en) * | 2012-03-06 | 2012-07-25 | 广东电网公司电力科学研究院 | Open forward and inverse cycle coupling triple supply system of electricity, heat and cold based on combustion gas turbine |
| CN107606594A (en) * | 2017-09-05 | 2018-01-19 | 新奥（中国）燃气投资有限公司 | Steam and hot water dual-purpose type cogeneration units |
-
2012
- 2012-03-06 CN CN2012200809173U patent/CN202596823U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606237A (en) * | 2012-03-06 | 2012-07-25 | 广东电网公司电力科学研究院 | Open forward and inverse cycle coupling triple supply system of electricity, heat and cold based on combustion gas turbine |
| CN107606594A (en) * | 2017-09-05 | 2018-01-19 | 新奥（中国）燃气投资有限公司 | Steam and hot water dual-purpose type cogeneration units |
| CN107606594B (en) * | 2017-09-05 | 2019-09-17 | 新奥（中国）燃气投资有限公司 | Steam and hot water dual-purpose type cogeneration units |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121212 Effective date of abandoning: 20140730 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20121212 Effective date of abandoning: 20140730 |
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| RGAV | Abandon patent right to avoid regrant |