CN105736079B - Electricity generation system operation of power networks control method - Google Patents
Electricity generation system operation of power networks control method Download PDFInfo
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- CN105736079B CN105736079B CN201610295812.2A CN201610295812A CN105736079B CN 105736079 B CN105736079 B CN 105736079B CN 201610295812 A CN201610295812 A CN 201610295812A CN 105736079 B CN105736079 B CN 105736079B
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- steam
- carbon dioxide
- capture device
- valve
- vapor
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Classifications
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- 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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/04—Using steam or condensate extracted or exhausted from steam engine plant for specific purposes other than heating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A kind of electricity generation system operation of power networks control method, including：When the network load of electricity generation system is relatively low, by the first vapor steam blaster and the concatenated connection type of the second vapor steam blaster, secondary booster is carried out to the steam of extraction, the steam after secondary booster is transported to sufficient carbon dioxide capture device；When low during the network load of electricity generation system is in, the steam of extraction is pressurized by the second vapor steam blaster, steam after supercharged is transported to sufficient carbon dioxide capture device；When the network load of electricity generation system is in middle high, the steam of extraction is pressurized by the first vapor steam blaster, steam after supercharged is transported to sufficient carbon dioxide capture device；When the network load of electricity generation system is in higher, the steam of extraction is directly transported to sufficient carbon dioxide capture device.
Description
Technical field
The present invention relates to a kind of electricity generation systems, more particularly, to a kind of environmental protection power generation system with carbon dioxide capture device
System and its operation of power networks method.
Background technology
In recent years, the generation of greenhouse gases clearly results in global warming, and the generation of greenhouse gases further increase by
More increase from global warming.Since carbon dioxide is considered as main greenhouse gases, using carbon dioxide as the greenhouse of representative
Gas largely discharges and the Global climate change of initiation, is the most serious and need most urgent solve the problems, such as that the mankind face at present
One of, carbon capture and storage are considered as a kind of possible master for reducing greenhouse gases and discharging into the atmosphere and control global warming
Want means.
Carbon dioxide mostlys come from the burning of fossil fuel, the flue gases of conventional power plants generally comprise from about 4% to
About 14% carbon dioxide.In China, fossil fuel especially Coal Energy Source is in important ground for a long time in power industry
Position, power industry be especially a large amount of coal-burning power plants CO2 emissions account for national CO2 emission total amount 40~
50%.Therefore, Development of Novel environment-friendly power generation system reduces CO2 emissions, coal fired power plant or even whole society's carbon is subtracted
The importance of row is self-evident.
It is now recognized that the collecting carbonic anhydride technology closest to large-scale industrial application is after-combustion trapping.It is caught in after-combustion
It concentrates, carbon dioxide is removed from flue gas, remaining flue gas is discharged into the atmosphere and by carbon dioxide compression for transporting and storing.
The carbon dioxide being captured can be used for sealing up for safekeeping, methanol manufacture and three times in a variety of applications such as oil recycling.
Chemical absorbing carbon dioxide separation method be it is a kind of be widely used, adaptable flue gas decarbonization technology.Its
Removing carbon dioxide is removed using absorbing from burning gases, and followed by steam stripping regeneration solvent and is captured comprising two in a solvent
Carbonoxide.But this method needs to warm to supply Analytic Tower, to realize the carbon dioxide resolving in Analytic Tower in consuming.
To provide this partial heat, the steam for extracting specified pressure from steam turbine cycle flow path is needed to be boiled again for heating Analytic Tower
Device.
In the prior art, 201110172955.1 patent of invention proposes a kind of hair with carbon dioxide capture and compression
Electric equipment, wherein by using the connection of clutch control steam turbine and generator, to make permission carbon dioxide capture system
System can flexibly be operated with compressor according to load.201080063370.X patent of invention disclose and a kind of carrying dioxy
The power generator for changing carbon capture is used therein by using two steam jet ejectors according to the selection of the load of power generator
One is used to increase the steam pressure extracted from power generator vapour-cycling, to make it meet carbon dioxide capture device
The demand of operating pressure.
The patent of invention of 201080063370.X makes the steam pressure of extraction meet carbon dioxide to catch by steam jet ejector
Obtain the demand of the operating pressure of device.But it is when the load of power generator is relatively low, in order to meet carbon dioxide capture device
Operating pressure demand, even directly can only extract steam or use from boiler export by the high pressure section from steam turbine
The higher steam jet ejector of pressurization amplitude.And if causing the steam of acting to reduce from the drawn upstream steam of steam turbine, meeting
If the generating efficiency of reduction system needs to increase cost using the higher vapor steam blaster of pressurization amplitude.
Invention content
The present invention provides a kind of environmentally friendly steam power-generating system with carbon dioxide capture, can improve
The above-mentioned deficiency of the invention of 201080063370.X can also make in the case where that need not use more high pressure vapor steam blaster
The steam pressure extracted from steam turbine low pressure stage meets the demand of the operating pressure of carbon dioxide capture device.
As one aspect of the present invention, provide a kind of environment-friendly power generation system, including turbine, vapor steam blaster and
Carbon dioxide capture device, the turbine include pressure turbine, middle-pressure turbine and low-pressure turbine；The steam spray
Emitter can receive low-pressure turbine outlet steam, and increase the pressure of the steam；Steaming after the vapor steam blaster pressurization
Gas introduces carbon dioxide capture device by pipeline；The vapor steam blaster includes that the first steam jet ejector and the second steam spray
Emitter can change according to the network load of electricity generation system between first vapor steam blaster and the second vapor steam blaster
In parallel and series relationship, and the change flowed to by steam, make the steam by vapor steam blaster meet carbon dioxide and catch
Obtain the requirement of device operating pressure.
Preferably, the outlet line of the low-pressure turbine is divided into two-way, wherein leading to condenser all the way, in addition divides all the way
For three-way connection (pipe) line；First via pipeline is communicated by the first valve with the carbon dioxide capture device in three tunnel, the second tunnel
Pipeline passes sequentially through the second valve, the first vapor steam blaster and third valve and is communicated with the carbon dioxide capture device, the
It is identical as the carbon dioxide capture device that three-way connection (pipe) line passes sequentially through the 4th valve and the second vapor steam blaster；Described first
Pipeline between vapor steam blaster and the third valve is communicated by the 5th valve with the entrance of second vapor steam blaster.
Preferably, the pressurization amplitude of second vapor steam blaster is more than the pressurization amplitude of the first vapor steam blaster.
Preferably, second valve and the 4th valve are flow valve, when low-pressure turbine outlet steam can not expire
The requirement of sufficient carbon dioxide capture device operating pressure, and the steam pressure for passing through the pressurization of the first vapor steam blaster is more than titanium dioxide
When the requirement of carbon acquisition equipment operating pressure, opens first and arrive third flow valve, close the 4th valve and the 5th valve, pass through
The flow for adjusting the second valve makes the steam pressure of inflow carbon dioxide capture device be equal to or slightly greater than carbon dioxide capture
Pressure needed for the operation of device.
Preferably, when it is impossible to meet carbon dioxide capture device fortune for the steam pressure by the pressurization of the first vapor steam blaster
The requirement of row pressure, and the steam pressure for passing through the pressurization of the second vapor steam blaster is more than carbon dioxide capture device operating pressure
It is required that when, the first valve and the 5th valve are closed, the second valve, third valve and the 4th valve are opened, by adjusting the
The flow of two valves and the 4th valve makes the steam pressure of inflow carbon dioxide capture device be equal to or slightly greater than titanium dioxide
Pressure needed for the operation of carbon acquisition equipment.
As another aspect of the present invention, the operation of power networks method of above-mentioned environment-friendly power generation system is provided, including such as
Lower flow：When the network load of electricity generation system is at full capacity or is higher than specific first load, the low-pressure turbine goes out
Mouth steam meets the requirement of carbon dioxide capture device operating pressure, opens the first valve, closes the second valve to the 5th valve,
By the vapor stream of extraction by the first pipeline introducing carbon dioxide acquisition equipment, to run the carbon dioxide capture device；When
When the network load of electricity generation system is higher than specific second load less than specific first load, low-pressure turbine outlet steam can not
Meet the requirement of carbon dioxide capture device operating pressure, and the steam pressure for passing through the pressurization of the first vapor steam blaster meets dioxy
Change the requirement of carbon acquisition equipment operating pressure, open second and third valve, closes the first valve, the 4th valve and the 5th
Valve is filled by the vapor stream of extraction by the second pipeline introducing carbon dioxide acquisition equipment with running the carbon dioxide capture
It sets；
When the network load of electricity generation system is higher than specific third load less than specific second load, sprayed by the first steam
It is impossible to meet the requirements of carbon dioxide capture device operating pressure for the steam pressure of emitter pressurization, and pass through the second vapour injection
The steam pressure of device pressurization meets the requirement of carbon dioxide capture device operating pressure, opens the 4th valve, close the first valve,
Second valve, third valve and the 5th valve, by the vapor stream of extraction by third pipeline introducing carbon dioxide acquisition equipment,
To run the carbon dioxide capture device；When the network load of electricity generation system is less than specific third load, steamed by second
The steam pressure of gas blowout emitter pressurization it is impossible to meet the requirement of carbon dioxide capture device operating pressure, open the second valve with
And the 5th valve, the first valve, third valve and the 4th valve are closed, the vapor stream of extraction is passed sequentially through into the spray of the first steam
After emitter and the second vapor steam blaster carry out secondary booster, introducing carbon dioxide acquisition equipment, to run the carbon dioxide
Acquisition equipment.
Description of the drawings
Fig. 1 is the schematic diagram of the embodiment of the present invention.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Referring to the embodiment of the environment-friendly power generation system of the present invention shown in Fig. 1 comprising steam generator 6, steam turbine
Machine, generator 5, vapor steam blaster, carbon dioxide capture device 10 and condenser 7.Steam generator 6 is used for by entering
Its internal water is heated, and generates the high pressure steam for power generation.Steam turbine plant includes pressure turbine 1, middle pressure whirlpool
Turbine 2 and low-pressure turbine 3 are arranged on common axis 4.The steam that steam generator 6 generates passes through pressure turbine 1
Afterwards, after being heated by reheating pipeline, middle-pressure turbine, low-pressure turbine 3 are passed sequentially through, to drive coupled generator
5 and produce electricl energy.
The vapor exit line of low-pressure turbine 3 is divided into two-way, wherein leading to condenser 7 all the way, is condensed in condenser 7
Steam generator 6 is imported by conducting wire 8 again, is recycled after heating and degassing apparatus at condensed water；Other one
Road reaches the capture that carbon dioxide capture device is used for carbon dioxide by vapor steam blaster or directly by pipeline.
Vapor steam blaster includes the first steam jet ejector 26 and the second vapor steam blaster 32, can will be by therein
Steam pressurizes, wherein the pressurization amplitude of the second vapor steam blaster 32 is more than the pressurization amplitude of the first vapor steam blaster 26.
In addition low-pressure turbine vapor exit line is divided into three-way connection (pipe) line all the way, wherein first via pipeline 20 passes through first
Valve 21 is communicated with carbon dioxide capture device 10；Second road pipeline 24 passes sequentially through the second valve 25, the first vapor steam blaster
26 and third valve 28 communicate 10 with carbon dioxide capture device；Third road pipeline 30 passes sequentially through the 4th valve 31 and
Two vapor steam blasters 32 identical as carbon dioxide capture device 10；Pipeline between first vapor steam blaster 26 and third valve 28
27 are communicated by the 5th valve 29 with the entrance of the second vapor steam blaster 32.
Carbon dioxide capture device 10 include for example based on freezing ammonia or amine technological operation absorber and for compress from
It is vented one or more carbon-dioxide gas compressors of the carbon dioxide extracted.The carbon dioxide being captured and compressed is by means of pipeline 11
It is transported to storage or transportation facility.Not carbonated gas is released to air or is oriented to via pipeline 12 further to divide
From or processing.The condensate water of carbon dioxide capture process is directed to steam generator 6 by pipeline 13.
The operation of power networks method of the electricity generation system of the embodiment of the present invention, including following flow.When the power grid of electricity generation system is negative
When lotus is at full capacity or is higher than specific first load, low-pressure turbine 3 exports steam and meets carbon dioxide capture device 10
The first valve 21 is opened in the requirement of operating pressure, closes 25 to the 5th valve 29 of the second valve, and the vapor stream of extraction is passed through the
One pipeline, 20 introducing carbon dioxide acquisition equipment 10, to run carbon dioxide capture device 10.
When the network load of electricity generation system is higher than specific second load less than specific first load, low-pressure turbine 3 goes out
It is impossible to meet the requirements of 10 operating pressure of carbon dioxide capture device for mouth steam, and pass through the pressurization of the first vapor steam blaster 26
Steam pressure meets the requirement of 10 operating pressure of carbon dioxide capture device, opens the second valve 25 and third valve 28, closes
The first valve 21, the 4th valve 31 and the 5th valve 27 are closed, the vapor stream of extraction is passed through into the second pipeline introducing carbon dioxide
Acquisition equipment 10, to run carbon dioxide capture device 10.
When the network load of electricity generation system is higher than specific third load less than specific second load, sprayed by the first steam
It is impossible to meet the requirements of 10 operating pressure of carbon dioxide capture device for the steam pressure that emitter 26 is pressurizeed, and pass through the second steam
The steam pressure that injector 32 pressurizes meets the requirement of 10 operating pressure of carbon dioxide capture device.The 4th valve 31 is opened, is closed
The first valve 21, the second valve 25, third valve 28 and the 5th valve 29 are closed, the vapor stream of extraction is passed through into third pipeline 30
Introducing carbon dioxide acquisition equipment 10, to run carbon dioxide capture device 10；
When the network load of electricity generation system is less than specific third load, by the steam of the second vapor steam blaster 32 pressurization
It is impossible to meet the requirements of 10 operating pressure of carbon dioxide capture device for pressure, open the second valve 25 and the 5th valve 29,
Close the first valve 21, third valve 28 and the 4th valve 31.At this moment, the first vapor steam blaster 26 and the second vapor steam blaster
Series relationship is changed to by parallel connection between 32, the first vapor steam blaster outlet steam is changed by directly reaching carbon dioxide capture device 10
For by reaching carbon dioxide capture device 10 after the second vapor steam blaster 32, therefore vapor stream passes sequentially through the first vapour injection
After device 26 and the second vapor steam blaster 32 carry out secondary booster, introducing carbon dioxide acquisition equipment 10, to run the dioxy
Change carbon acquisition equipment 10.
Above-mentioned setting through the invention, when the load of electricity generation system is relatively low, by the connection for changing vapor steam blaster
Mode carries out secondary booster to the steam of extraction, to use high pressure steam injector or extract high-pressure turbine
In the case of machine steam, the requirement of 10 operating pressure of carbon dioxide capture device can also be met.
Preferably, the second valve 25 and the 4th valve 31 can be set to flow valve, is steamed when low-pressure turbine 3 exports
It is impossible to meet the requirements of 10 operating pressure of carbon dioxide capture device for gas, and pass through the steam of the first vapor steam blaster 26 pressurization
When pressure is more than the requirement of 10 operating pressure of carbon dioxide capture device, opens first and arrive third valve, close the 4th valve 30
And the 5th valve 29 makes the steam pressure etc. of inflow carbon dioxide capture device 10 by adjusting the flow of the second valve 25
In or slightly larger than carbon dioxide capture device 10 operation needed for pressure.When the steam by the pressurization of the first vapor steam blaster 26
It is impossible to meet the requirements of 10 operating pressure of carbon dioxide capture device for pressure, and pass through the steaming of the second vapor steam blaster 32 pressurization
When atmospheric pressure is more than the requirement of 10 operating pressure of carbon dioxide capture device, the first valve 21 and the 5th valve 29 are closed, is opened
The second valve 25, third valve 28 and the 4th valve 31 are opened, by adjusting the flow of the second valve 25 and the 4th valve 31,
The steam pressure of inflow carbon dioxide capture device 10 is set to be equal to or slightly greater than needed for the operation of carbon dioxide capture device 10
Pressure.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
Various corresponding change and deformations, but these corresponding change and deformations can be made according to the present invention by knowing those skilled in the art
The protection domain of the claims in the present invention should all be belonged to.
Claims (1)
1. a kind of electricity generation system operation of power networks control method, including：It is negative less than specific third in the network load when electricity generation system
When lotus, by the first vapor steam blaster and the concatenated connection type of the second vapor steam blaster, low-pressure turbine outlet steam is received,
Secondary booster is carried out to the steam of extraction, the steam after secondary booster is transported to carbon dioxide capture device；Work as electricity generation system
Network load less than specific second load be higher than specific third load when, pass through the second vapor steam blaster receive low-pressure turbine
Steam is exported, the steam of extraction is pressurized, steam after supercharged is transported to carbon dioxide capture device；Work as electricity generation system
Network load be at full capacity or higher than specific first load when, by the first vapor steam blaster receive low-pressure turbine go out
Mouth steam, is pressurized the steam of extraction, steam after supercharged is transported to carbon dioxide capture device；When electricity generation system
When network load is at full capacity or is higher than specific first load, directly the low-pressure turbine outlet steam of extraction is transported to
Carbon dioxide capture device；The pressurization amplitude of wherein the second vapor steam blaster is more than the pressurization amplitude of the first vapor steam blaster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610295812.2A CN105736079B (en) | 2015-08-22 | 2015-08-22 | Electricity generation system operation of power networks control method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510517566.6A CN105134317B (en) | 2015-08-22 | 2015-08-22 | A kind of environment-friendly power generation system and its operation of power networks method |
| CN201610295812.2A CN105736079B (en) | 2015-08-22 | 2015-08-22 | Electricity generation system operation of power networks control method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510517566.6A Division CN105134317B (en) | 2015-08-22 | 2015-08-22 | A kind of environment-friendly power generation system and its operation of power networks method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105736079A CN105736079A (en) | 2016-07-06 |
| CN105736079B true CN105736079B (en) | 2018-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610295812.2A Expired - Fee Related CN105736079B (en) | 2015-08-22 | 2015-08-22 | Electricity generation system operation of power networks control method |
Country Status (1)
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| CN (1) | CN105736079B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4528811A (en) * | 1983-06-03 | 1985-07-16 | General Electric Co. | Closed-cycle gas turbine chemical processor |
| DE3616797A1 (en) * | 1986-05-17 | 1987-11-19 | Koerting Ag | Steam turbine system |
| DE19535318C2 (en) * | 1995-09-22 | 1997-11-27 | Steag Ag | Method and arrangement for preheating the feed water of a steam generator in power plant processes |
| EP2333256B1 (en) * | 2009-12-08 | 2013-10-16 | Alstom Technology Ltd | Power plant with CO2 capture and method to operate such power plant |
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2015
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| CN105736079A (en) | 2016-07-06 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20180625 Address after: 510000 East 501, No. 64, 66, Jianzhong Road, Tianhe District, Guangzhou, Guangdong. Applicant after: Guangdong southeast transmission and Transformation Engineering Co.,Ltd. Address before: 215124 46 Xingguo Road, Guo Xiang, Wuzhong District, Suzhou, Jiangsu Applicant before: Zhao Dongxu |
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Address after: 510000 East 501, No. 64, 66, Jianzhong Road, Tianhe District, Guangzhou, Guangdong. Patentee after: GUANGDONG DN ENERGY SYSTEM TECHNOLOGY Co.,Ltd. Address before: 510000 East 501, No. 64, 66, Jianzhong Road, Tianhe District, Guangzhou, Guangdong. Patentee before: Guangdong southeast transmission and Transformation Engineering Co.,Ltd. |
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