CN106150580A - Supercritical carbon dioxide circulates the layout and startup optimization mode being combined with combustion engine - Google Patents
Supercritical carbon dioxide circulates the layout and startup optimization mode being combined with combustion engine Download PDFInfo
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- CN106150580A CN106150580A CN201610551594.4A CN201610551594A CN106150580A CN 106150580 A CN106150580 A CN 106150580A CN 201610551594 A CN201610551594 A CN 201610551594A CN 106150580 A CN106150580 A CN 106150580A
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- Prior art keywords
- heat
- heat exchanger
- compressor
- turbine
- regenerator
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses layout and startup optimization mode that the circulation of a kind of supercritical carbon dioxide is combined with combustion engine, including gas turbine, gas electricity generator and CO2Compressor, wherein, gas turbine, gas electricity generator and CO2Compressor is coaxially arranged, and which is capable of CO2The startup of compressor, avoids using heavy-duty motor simultaneously.
Description
Technical field
The invention belongs to energy-conserving and environment-protective field, relate to a kind of supercritical carbon dioxide and circulate the layout being combined with combustion engine and open
The dynamic method of operation.
Background technology
New forms of energy, distributed energy exploitation of increasing concern, China Gas generating be important distributed energy
Form, of a relatively high in various new forms of energy Middle combustion engine efficiency, control flexible simultaneously, can be as the complementation of other new forms of energy
Utilize means, be also one of the means of electrical network regulation.Gas turbine as Ground Power Generation System generally requires and waste heat recovery
System combines to improve its efficiency of energy utilization.Current UTILIZATION OF VESIDUAL HEAT IN mainly uses traditional steam boiler and steam turbine, for
The research improving its thermal efficiency further never stops.Wherein supercritical Brayton cycle is a kind of circulation shape having superiority most
Formula.It is big that Novel supercritical working medium (carbon dioxide, helium and nitrous oxide etc.) has energy density, and heat transfer efficiency is high, system letter
The innate advantages such as list, can be greatly improved heat to power output efficiency, reduce equipment volume, have the highest economy.And dioxy
Change working medium hot physical property within the temperature range of current waste heat recovery field such as carbon sufficiently stable, there is not thermal decomposition problem, completely
May be used for high-temperature part heat recovery.But the compressor wasted work of supercritical carbon dioxide Brayton cycle is relatively big, according to electricity
Motivation is operated alone, and himself needs to expend huge electric energy, and power of motor is relatively big, adds cost and too increases operation tune
Joint difficulty；According to the arrangement of similar combustion engine, by CO2Compressor and CO2Turbine is coaxially arranged, due to supercritical titanium dioxide
Carbon Brayton cycle is closed cycle, and its thermal source is to obtain heat by heat exchanger heat exchange, and the time that starts can not be too fast, then open
Relatively high power motor is need nonetheless remain for time dynamic.
Summary of the invention
It is an object of the invention to the shortcoming overcoming above-mentioned prior art, it is provided that a kind of supercritical carbon dioxide circulation with
The layout of combustion engine combination and startup optimization mode, which is capable of CO2The startup of compressor, avoids using high-power simultaneously
Motor.
For reaching above-mentioned purpose, layout and startup that supercritical carbon dioxide of the present invention circulation is combined with combustion engine are transported
Line mode includes gas turbine, gas electricity generator and CO2Compressor, wherein, gas turbine, gas electricity generator and CO2Compressor is same
Axle is arranged.
Also include CO2Turbine, high-temperature residual heat heat exchanger, low temperature waste heat exchanger and regenerator, the flue gas of gas turbine goes out
Mouth is connected with the cold side entrance of high-temperature residual heat heat exchanger, cold side outlet and the low temperature exhaust heat heat exchange of high-temperature residual heat heat exchanger
The cold side entrance of device is connected, the heat absorbing side outlet of high-temperature residual heat heat exchanger and CO2The CO of turbine2Working medium entrance is connected,
CO2The CO of turbine2Sender property outlet is connected with the cold side entrance of regenerator, the cold side outlet of regenerator and CO2Compressor
CO2Working medium entrance is connected, CO2The CO of compressor2The heat absorbing side entrance of sender property outlet and regenerator and low temperature waste heat exchanger
Heat absorbing side entrance is connected, the heat absorbing side outlet of regenerator and the heat absorbing side outlet of low temperature waste heat exchanger and high-temperature residual heat heat exchange
The heat absorbing side entrance of device is connected.
The cold side of regenerator exports pre-cooled device and CO2The CO of compressor2Working medium entrance is connected.
The method have the advantages that
Layout and startup optimization mode that supercritical carbon dioxide of the present invention circulation is combined with combustion engine include coaxial
Gas turbine, gas electricity generator and the CO arranged2Compressor, after gas turbine startup optimization, gas turbine drives CO2Compressor
Compression CO2Working medium, it is achieved CO2The startup of compressor, avoids using high-power start electricity in supercritical carbon dioxide system simultaneously
Motivation, it is to avoid CO2Power consumption huge during compressor start, when shortening the startup of supercritical carbon dioxide Brayton Cycle system
Between, simultaneously because stable, the flexible adjustment of gas turbine, so that CO2The stable operation of compressor and flexible adjustment, enter
And ensure the flow of supercritical carbon dioxide system and the stable of pressure and flexible adjustment.
CO simultaneously2Turbine and CO2Compressor is arranged apart, and both do not interfere with each other, so that whole carbon dioxide recycle system
The regulating working conditions degree of freedom of system is greatly increased.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Wherein, 1 is CO2Compressor, 2 be gas electricity generator, 3 be gas turbine, 4 for CO2Turbine, 5 it is low temperature exhaust heat heat exchange
Device, 6 be high-temperature residual heat heat exchanger, 7 be regenerator, 8 for precooler.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail:
With reference to Fig. 1, supercritical carbon dioxide of the present invention circulates the layout and startup optimization mode being combined with combustion engine
Including gas turbine 3, gas electricity generator 2 and CO2Compressor 1, wherein, gas turbine 3, gas electricity generator 2 and CO2Compressor 1 is same
Axle is arranged.
Present invention additionally comprises CO2Turbine 4, high-temperature residual heat heat exchanger 6, low temperature waste heat exchanger 5 and regenerator 7, combustion gas is taken turns
The exhanst gas outlet of machine 3 is connected with the cold side entrance of high-temperature residual heat heat exchanger 6, the cold side outlet of high-temperature residual heat heat exchanger 6
It is connected with the cold side entrance of low temperature waste heat exchanger 5, the heat absorbing side outlet of high-temperature residual heat heat exchanger 6 and CO2The CO of turbine 42
Working medium entrance is connected, CO2The CO of turbine 42Sender property outlet is connected with the cold side entrance of regenerator 7, the heat release of regenerator 7
Side outlet and CO2The CO of compressor 12Working medium entrance is connected, CO2The CO of compressor 12Sender property outlet and the heat absorbing side of regenerator 7
The heat absorbing side entrance of entrance and low temperature waste heat exchanger 5 is connected, the heat absorbing side outlet of regenerator 7 and low temperature waste heat exchanger 5
Heat absorbing side outlet be connected with the heat absorbing side entrance of high-temperature residual heat heat exchanger 6.Wherein, the cold side outlet of regenerator 7 is through pre-
Cooler 8 and CO2The CO of compressor 12Working medium entrance is connected.
The specific works process of the present invention is:
CO2Compressor 1 is driven by gas turbine 3, CO2Compressor 1 start-up course is identical with gas turbine 3 start-up course,
CO after gas turbine 3 startup optimization2Compressor 1 runs simultaneously, drives CO2Working fluid flow, quickly realizes CO2Working medium is changed at waste heat
Heat exchange in hot device, can start CO afterwards2Turbine 4 generates electricity；Due to CO2Turbine 4 and CO2Compressor 1 is arranged apart, and both are the most mutual
Disturb mutually, its power, rotating speed, flow all can each self-regulation, during variable working condition, CO2Compressor 1 is controlled by gas turbine 3 system, and
CO2Turbine 4 then individually can be controlled by bypass；
Low temperature exhaust heat is entered back into after the cold side heat release of the flue gas entrance high-temperature residual heat heat exchanger 6 of gas turbine 3 output
Heat exchange in heat exchanger 5, is then then exhausted from, the CO of high-temperature residual heat heat exchanger 6 heat absorbing side output2Working medium enters CO2Turbine 4 generates electricity,
CO2The CO of turbine 4 output2Working medium is successively through in the cold side heat release of regenerator 7 and entering back into CO after pre-cooling in precooler 82
Compressor 1 is compressed, through CO2CO after compressor 1 compression2Working medium is divided into two-way, and wherein, a road enters into regenerator 7
Absorbing heat in heat absorbing side, another road enters in the heat absorbing side of low temperature waste heat exchanger 5 absorbs heat, low temperature waste heat exchanger 5 heat absorbing side
The CO of output2Working medium and the CO of regenerator 7 heat absorbing side output2Working medium enters in high-temperature residual heat heat exchanger 6 heat absorbing side inhales
Heat.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not limited to this
Bright, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in the present invention
Protection domain within.
Claims (3)
1. a supercritical carbon dioxide circulates the layout and startup optimization mode being combined with combustion engine, it is characterised in that include combustion
Gas-turbine (3), gas electricity generator (2) and CO2Compressor (1), wherein, gas turbine (3), gas electricity generator (2) and CO2Compression
Machine (1) is coaxially arranged.
Supercritical carbon dioxide the most according to claim 1 circulates the layout and startup optimization mode being combined with combustion engine, its
It is characterised by, also includes CO2Turbine (4), high-temperature residual heat heat exchanger (6), low temperature waste heat exchanger (5) and regenerator (7), combustion gas
The exhanst gas outlet of turbine (3) is connected with the cold side entrance of high-temperature residual heat heat exchanger (6), putting of high-temperature residual heat heat exchanger (6)
Hot side outlet is connected with the cold side entrance of low temperature waste heat exchanger (5), the outlet of the heat absorbing side of high-temperature residual heat heat exchanger (6) with
CO2The CO of turbine (4)2Working medium entrance is connected, CO2The CO of turbine (4)2The cold side entrance phase of sender property outlet and regenerator (7)
Connection, the cold side outlet of regenerator (7) and CO2The CO of compressor (1)2Working medium entrance is connected, CO2The CO of compressor (1)2
Sender property outlet is connected with the heat absorbing side entrance of regenerator (7) and the heat absorbing side entrance of low temperature waste heat exchanger (5), regenerator
(7) heat absorbing side outlet and the heat absorbing side of low temperature waste heat exchanger (5) export the heat absorbing side entrance with high-temperature residual heat heat exchanger (6)
It is connected.
Supercritical carbon dioxide the most according to claim 1 circulates the layout and startup optimization mode being combined with combustion engine, its
Being characterised by, the cold side of regenerator (7) exports pre-cooled device (8) and CO2The CO of compressor (1)2Working medium entrance is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610551594.4A CN106150580A (en) | 2016-07-13 | 2016-07-13 | Supercritical carbon dioxide circulates the layout and startup optimization mode being combined with combustion engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610551594.4A CN106150580A (en) | 2016-07-13 | 2016-07-13 | Supercritical carbon dioxide circulates the layout and startup optimization mode being combined with combustion engine |
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| CN106150580A true CN106150580A (en) | 2016-11-23 |
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| CN201610551594.4A Pending CN106150580A (en) | 2016-07-13 | 2016-07-13 | Supercritical carbon dioxide circulates the layout and startup optimization mode being combined with combustion engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108765199A (en) * | 2018-06-06 | 2018-11-06 | 华电电力科学研究院有限公司 | A kind of active efficient and environment-friendly type distributed energy resource system and operation method |
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| CN103967648A (en) * | 2014-05-21 | 2014-08-06 | 哈尔滨工程大学 | Comprehensive waste heat recovery system of ship low-speed diesel engine |
| CN104405599A (en) * | 2014-09-24 | 2015-03-11 | 西安交通大学 | Fuel gas-supercritical carbon dioxide united power electricity generation system utilizing solar energy |
| CN104481697A (en) * | 2014-12-05 | 2015-04-01 | 西安交通大学 | Fuel gas, diesel and supercritical carbon dioxide electric-power generation ship power-driven system |
| CN205332163U (en) * | 2016-01-20 | 2016-06-22 | 西安热工研究院有限公司 | High -efficient power generation system of coal -based super supercritical carbon dioxide brayton cycle double split flow |
| CN205858430U (en) * | 2016-07-13 | 2017-01-04 | 西安热工研究院有限公司 | A kind of combustion engine CO being easy to startup optimization2association system |
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2016
- 2016-07-13 CN CN201610551594.4A patent/CN106150580A/en active Pending
Patent Citations (8)
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| US6877322B2 (en) * | 2002-09-17 | 2005-04-12 | Foster Wheeler Energy Corporation | Advanced hybrid coal gasification cycle utilizing a recycled working fluid |
| CN102686834A (en) * | 2009-11-06 | 2012-09-19 | 通用电气公司 | Gas engine drives for gasification plants |
| US20120096861A1 (en) * | 2010-10-21 | 2012-04-26 | Kabushiki Kaisha Toshiba | Carbon dioxide recovery method and carbon-dioxide-recovery-type steam power generation system |
| CN103967648A (en) * | 2014-05-21 | 2014-08-06 | 哈尔滨工程大学 | Comprehensive waste heat recovery system of ship low-speed diesel engine |
| CN104405599A (en) * | 2014-09-24 | 2015-03-11 | 西安交通大学 | Fuel gas-supercritical carbon dioxide united power electricity generation system utilizing solar energy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108765199A (en) * | 2018-06-06 | 2018-11-06 | 华电电力科学研究院有限公司 | A kind of active efficient and environment-friendly type distributed energy resource system and operation method |
| CN108765199B (en) * | 2018-06-06 | 2023-08-04 | 华电电力科学研究院有限公司 | Distributed energy system and operation method |
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Application publication date: 20161123 |