CN206562943U - A kind of solar energy cogeneration system complementary with coal fired power plant - Google Patents
A kind of solar energy cogeneration system complementary with coal fired power plant Download PDFInfo
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- CN206562943U CN206562943U CN201720069678.4U CN201720069678U CN206562943U CN 206562943 U CN206562943 U CN 206562943U CN 201720069678 U CN201720069678 U CN 201720069678U CN 206562943 U CN206562943 U CN 206562943U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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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
- 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
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Abstract
A kind of solar energy cogeneration system complementary with coal fired power plant, the device includes coal unit loop, solar energy loop and absorption type heat pump loop, coal unit loop mainly includes boiler, steam turbine, condenser and feed-water heater, solar energy loop mainly includes feed-water heater, solar thermal collector, circulating pump and generator, and absorption type heat pump loop includes generator, condenser, absorber, evaporator, choke valve and circulating pump；The utility model is complementary by solar energy and coal fired power plant, can improve the net generating efficiency of solar energy, reduction solar energy thermal-power-generating cost of investment and cost of electricity-generating.
Description
Technical field
The utility model belongs to solar energy generation technology field, more particularly to a kind of solar energy heat complementary with coal fired power plant
Thermoelectric coproduction device.
Background technology
In recent years, many simple solar energy thermal-power-generating power stations have been built in countries in the world, technically demonstrate solar heat
The feasibility of generation technology.But only trough system realizes commercialization demonstrating running at present, and tower and dish-style is still in demonstration
Stage.These built exemplary power stations show that solar energy thermal-power-generating is still in industrialization early stage.Currently, solar energy is developed
The main difficulty of hot generation technology is：Extensive generate electricity needs to solve optically focused, tracking, transmission, energy storage, conversion of large area etc.
A series of matter of science and technologys.Low (the 1kW/m of solar radiation power density2Require that collected solar energy must have well below)
Aggregation and tracking, the cost of condenser accounts for the 40-70% once invested；Due to the discontinuity of solar radiation, it is necessary to wrap
Containing huge Storage Unit；In order to transport the high temperature refrigerant produced from solar collector, in addition it is also necessary to through up to hundreds of meters to number
The transmission pipeline of km distance.Therefore, solar heat power generation system unit installed capacity and gross investment are big, so as to cause hot generating
Cost is high.Compared to conventional fossil fuel electricity generation system, the unit installation investment of solar energy thermal-power-generating has reached the number of conventional power generation usage
Times, or even more than 10 times.Obviously, the plant investment cost of such high price can not be tolerated and be received by market.
In consideration of it, in solar energy strategical planning geared to the 21st century, developed country is complementary by solar energy and fossil fuel
Generate electricity as a kind of solution route, earn widespread respect.Solar energy can borrow the routine of maturation with fossil energy complemental power-generation
Power station equipment and technology, reach the purpose of reduction solar energy thermal-power-generating cost of investment.Accumulation of energy is substituted using combustion gas or oil burning boiler
Device, efficiency is improved to alleviate the unstable problem of solar energy thermal-power-generating.What the Department of Science and Technology of China printed and distributed for 2012《Solar energy
Generating development in science and technology " 12 " ad hoc planning》Clearly will " the innovative research side such as solar heat and fossil fuel complemental power-generation
Make progress in face " it is classified as one of object of planning.
The content of the invention
In order to solve the problem of above-mentioned prior art is present, the purpose of this utility model is to provide a kind of solar energy and combustion
The complementary cogeneration system in coal power station, the cost of electricity-generating of solar energy is reduced using solar energy and coal fired power plant complementation, in addition,
Cogeneration of heat and power can also be realized using solar-heating more than needed.
To achieve the above objectives, the utility model is adopted the following technical scheme that：
The complementary cogeneration system of a kind of solar energy and coal fired power plant, including coal unit loop, solar energy loop and
Absorption type heat pump loop, the coal unit loop includes boiler 1, and the superheated steam outlet of boiler 1 and the overheat of steam turbine 2 are steamed
Vapour entrance be connected, the exhaust steam outlet of steam turbine 2 is connected with the exhaust steam entrance of condenser 3, the condensation water out of condenser 3 with it is multiple
The condensation water inlet of feed-water heater 4 is connected step by step, the feedwater outlet of first order feed-water heater and the feed-water intake phase of boiler 1
Even, the regenerative steam outlet of steam turbine 2 is connected step by step with the regenerative steam entrance of multiple feed-water heaters 4；
The solar energy loop includes feed-water heater 4, the heat-transfer working medium outlet of feed-water heater 4 and the biography of generator 7
Hot working fluid entrance is connected, and the heat-transfer working medium outlet of generator 7 is connected with the heat-transfer working medium entrance of first circulation pump 6, first circulation
The heat-transfer working medium outlet of pump 6 is connected with the heat-transfer working medium entrance of solar thermal collector 5, and the heat-transfer working medium of solar thermal collector 5 goes out
Mouth is connected with the heat-transfer working medium entrance of feed-water heater 4；
The absorption type heat pump loop includes generator 7, and the refrigerant outlet of generator 7 connects the refrigerant of condenser 8
Entrance, the refrigerant outlet of condenser 8 connects the refrigerant inlet of evaporator 10, the refrigerant of evaporator 10 by choke valve 11
The refrigerant inlet of outlet connection absorber 9, the weak solution outlet of absorber 9 connects generator 7 by second circulation pump 12
Weak solution entrance, the concentrated solution entrance of the concentrated solution outlet connection absorber 9 of generator 7；The heat-transfer working medium of the generator 7 enters
Mouth is connected with the heat-transfer working medium outlet of feed-water heater 4, the heat-transfer working medium outlet of generator 7 and the heat transfer work of first circulation pump 6
Matter entrance is connected；Hot net water externally carries out heat supply after being absorbed heat respectively in absorber 9 and condenser 8；The heat-transfer working medium of evaporator 10
Entrance is connected with the cooling circulating water outlet of condenser 3, and the outlet of the heat-transfer working medium of evaporator 10 and the cooling circulating water of condenser 3 enter
Mouth connection.
The method that the solar energy cogeneration system complementary with coal fired power plant realizes cogeneration of heat and power, is returned in coal unit
In road：From the boiler feedwater of condenser 3, by the regenerative steam of steam turbine 2 and solar thermal collector 5 in feed-water heater 4
Heat-transfer working medium heating after, into boiler 1, absorb turns into superheated steam wherein after heat；Superheated steam has very high pressure
And temperature, after introducing steam turbine 2 through pipeline, the rotor of swiftly flowing Steam Actuation steam turbine 2 rotates acting；Steaming after acting
Vapour is discharged from the steam drain of the bottom of steam turbine 2, referred to as exhaust steam；Exhaust steam condenses into water in condenser 3, completes a circulation；
In solar energy loop：After heat-transfer working medium is heated in solar thermal collector 5, into feed-water heater 4, substitution
Partially or completely from the regenerative steam of steam turbine 2, heating boiler feed water, subsequently into the heat dilute solution of generator 7, then by
First circulation pump 6 squeezes into solar thermal collector 5, completes a circulation；
In absorption type heat pump loop：Working media includes refrigerant and absorption, refrigeration by adsorption in absorption type heat pump loop
The absorbent solution of agent, the two composition working medium pair；Heated using heat-transfer working medium in generator 7 by second circulation pump 12 from absorption
What the conveying of device 9 came has certain density solution, and most of low boiling point refrigerant in solution is evaporated；Refrigerant steams
Vapour enters in condenser 8, and the working-medium water of dynamic power unit is heated into high temperature and high pressure steam, meanwhile, refrigerant is cooled to be situated between
Matter is condensed into refrigerant liquid, then is depressured to evaporating pressure through choke valve 11；Refrigerant warp knuckle stream enters in evaporator 10, absorbs
The heat of turbine discharge and be excited into the refrigerant vapour under evaporating pressure, meanwhile, turbine discharge is condensed into liquid；
Evaporating pressure is dropped into absorber 9 through choke valve 11 through the remaining concentrated solution of generating process in generator 7, and from evaporator
10 low pressure refrigerant vapor out is mixed, and is absorbed low pressure refrigerant vapor and is returned to original concentration；Absorption process is
Exothermic process, by the feedwater heating from feed-water heater 4；The solution of concentration is recovered in absorber 9 again through second circulation
Continued cycling through after pump 12 boosts in feeding generator 7.
Compared to the prior art the utility model, has the following advantages that：
1st, it is complementary by solar energy and coal fired power plant, the net generating efficiency of solar energy can be improved, reduction solar energy thermal-power-generating is thrown
Provide cost and cost of electricity-generating.
2nd, part or all of extracted steam from turbine is substituted using solar energy light gathering and heat collecting, return steam turbine acting of drawing gas can be made,
Increase the generated output of coal fired power plant.
3rd, reclaiming coal unit exhaust steam in steam turbine waste heat using absorption heat pump is used for heat supply.
4th, the heat-transfer working medium that feed-water heater is exported further is utilized, the average collection of solar thermal collector can be reduced
Hot temperature, improves the collecting efficiency of solar thermal collector.
Brief description of the drawings
Fig. 1 is the utility model solar energy cogeneration system schematic diagram complementary with coal fired power plant.
Embodiment
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
Illustrated by taking China's typical case's 600MW coal units as an example, absorption heat pump uses lithium bromide absorption type heat pump, too
The heat-transfer working medium of positive energy heat collector uses conduction oil.
As shown in figure 1, coal unit loop：Coal unit loop mainly includes boiler 1, and steam turbine 2 and is given condenser 3
Water heater 4.The superheated steam outlet of boiler 1 is connected with the superheated steam entrance of steam turbine 2, the exhaust steam of steam turbine 2 export and
The exhaust steam entrance of condenser 3 is connected, and the condensation water out of condenser 3 is connected step by step with the condensation water inlet of feed-water heater 4, the
The feedwater outlet of one-level feed-water heater is connected with the feed-water intake of boiler 1, regenerative steam outlet and the multiple feedwater of steam turbine 2
The regenerative steam entrance of heater 4 is connected step by step.The course of work in coal unit loop is：From the boiler feedwater of condenser 3,
By after the heat-conducting oil heating of the regenerative steam of steam turbine 2 and solar thermal collector 5 in feed-water heater 4, into boiler 1,
Wherein absorbing turns into superheated steam after heat.Superheated steam has very high pressure and temperature, after introducing steam turbine 2 through pipeline, high
The rotor of the Steam Actuation steam turbine 2 of speed flowing rotates acting.Steam after acting is discharged from the steam drain of the bottom of steam turbine 2,
Referred to as exhaust steam.Exhaust steam condenses into water in condenser 3, completes a circulation.
Solar energy loop：Solar energy loop mainly includes feed-water heater 4, and solar thermal collector 5, circulating pump 6 occurs
Device 7.The conduction oil outlet of feed-water heater 4 is connected with the heat conduction oil-in of generator 7, the conduction oil outlet of generator 7 and the
The heat conduction oil-in of one circulating pump 6 is connected, the conduction oil outlet of first circulation pump 6 and the heat conduction oil-in of solar thermal collector 5
It is connected, the conduction oil outlet of solar thermal collector 5 is connected with the heat conduction oil-in of feed-water heater 4.The course of work is：Conduction oil
After being heated in solar thermal collector 5, into feed-water heater 4, the backheat partially or completely from steam turbine 2 is replaced to take out
Vapour, heating boiler feed water heats lithium bromide weak solution subsequently into generator 7, then squeezes into solar thermal collector by circulating pump 6
5, complete a circulation.
Absorption type heat pump loop：Absorption type heat pump loop includes generator 7, condenser 8, absorber 9, evaporator 10, section
Flow valve 11 and solution pump 12.The refrigerant of generator 7-water out connects refrigerant-water inlet of condenser 8, the system of condenser 8
Cryogen-water out connects refrigerant-water inlet of evaporator 10 by choke valve 11, and refrigerant-water out of evaporator 10 connects
Refrigerant-water inlet of absorber 9 is connect, the lithium bromide weak solution outlet of absorber 9 connects generator 7 by second circulation pump 12
Lithium bromide weak solution entrance, generator 7 lithium bromide concentrated solution outlet connection absorber 9 lithium bromide concentrated solution entrance；Institute
The heat conduction oil-in for stating generator 7 is connected with the conduction oil outlet of feed-water heater 4, the conduction oil outlet of generator 7 and first
The heat conduction oil-in connection of circulating pump 6.Hot net water externally carries out heat supply after being absorbed heat respectively in absorber 9 and condenser 8.Steam
The hair heat conduction oil-in of device 10 is connected with the cooling circulating water outlet of condenser 3, and the conduction oil outlet of evaporator 10 is cold with condenser 3
But circulation water inlet connection.
To include refrigerant-water and absorption, the absorbent of refrigeration by adsorption agent-water molten for working media in absorption type heat pump loop
Liquid, the two composition working medium pair；Using conduction oil heated in generator 7 by second circulation pump 12 from absorber 9 convey come tool
There is certain density solution, and come out most of low boiling point refrigerant-water evaporation in solution；Refrigerant-water vapour enters
In condenser 8, the working-medium water of dynamic power unit is heated into high temperature and high pressure steam, meanwhile, refrigerant-water is cooled medium
Refrigerant-water liquid is condensed into, then evaporating pressure is depressured to through choke valve 11；Refrigerant-water warp knuckle stream enters in evaporator 10,
Absorb the heat of turbine discharge and be excited into refrigerant-water vapour under evaporating pressure, meanwhile, turbine discharge is condensed into
Liquid；Evaporating pressure is dropped into absorber 9 through choke valve 11 through the remaining lithium bromide concentrated solution of generating process in generator 7
In, mixed with low pressure refrigerant-water vapour from evaporator 10 out, absorb low pressure refrigerant-water vapour and simultaneously return to original
The concentration come；Absorption process is exothermic process, by the feedwater heating from feed-water heater 4；Concentration is recovered in absorber 9
Solution again through second circulation pump 12 boost after feeding generator 7 in continue cycling through.
Claims (1)
1. a kind of solar energy cogeneration system complementary with coal fired power plant, it is characterised in that：Including coal unit loop, the sun
Energy loop and absorption type heat pump loop, the coal unit loop include boiler (1), the superheated steam outlet of boiler (1) and vapour
The superheated steam entrance of turbine (2) is connected, and the exhaust steam outlet of steam turbine (2) is connected with the exhaust steam entrance of condenser (3), condenser
(3) condensation water out is connected step by step with the condensation water inlet of multiple feed-water heaters (4), the feedwater of first order feed-water heater
Outlet is connected with the feed-water intake of boiler (1), the regenerative steam outlet of steam turbine (2) and the backheat of multiple feed-water heaters (4)
Extraction entrance is connected step by step；
The solar energy loop includes feed-water heater (4), heat-transfer working medium outlet and the generator (7) of feed-water heater (4)
Heat-transfer working medium entrance is connected, and the heat-transfer working medium outlet of generator (7) is connected with the heat-transfer working medium entrance of first circulation pump (6), the
The heat-transfer working medium outlet of one circulating pump (6) is connected with the heat-transfer working medium entrance of solar thermal collector (5), solar thermal collector (5)
Heat-transfer working medium outlet be connected with the heat-transfer working medium entrance of feed-water heater (4)；
The absorption type heat pump loop includes generator (7), the refrigeration of the refrigerant outlet connection condenser (8) of generator (7)
Agent entrance, the refrigerant outlet of condenser (8) connects the refrigerant inlet of evaporator (10), evaporator by choke valve (11)
(10) refrigerant inlet of refrigerant outlet connection absorber (9), the weak solution outlet of absorber (9) passes through second circulation pump
(12) the weak solution entrance of connection generator (7), the concentrated solution entrance of the concentrated solution outlet connection absorber (9) of generator (7)；
The heat-transfer working medium entrance of the generator (7) is connected with the heat-transfer working medium outlet of feed-water heater (4), the heat transfer of generator (7)
Sender property outlet is connected with the heat-transfer working medium entrance of first circulation pump (6)；Hot net water is respectively in absorber (9) and condenser (8)
Heat supply is externally carried out after heat absorption；Evaporator (10) heat-transfer working medium entrance is connected with the cooling circulating water outlet of condenser (3), is evaporated
The outlet of device (10) heat-transfer working medium is connected with the cooling circulating water entrance of condenser (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720069678.4U CN206562943U (en) | 2017-01-17 | 2017-01-17 | A kind of solar energy cogeneration system complementary with coal fired power plant |
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| CN201720069678.4U CN206562943U (en) | 2017-01-17 | 2017-01-17 | A kind of solar energy cogeneration system complementary with coal fired power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761962A (en) * | 2017-01-17 | 2017-05-31 | 中国华能集团清洁能源技术研究院有限公司 | A kind of solar energy cogeneration system complementary with coal fired power plant and method |
| CN113865118A (en) * | 2021-09-15 | 2021-12-31 | 吉林省电力科学研究院有限公司 | Light energy access coal-fired unit and light-coal energy complementary load adjusting method |
-
2017
- 2017-01-17 CN CN201720069678.4U patent/CN206562943U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761962A (en) * | 2017-01-17 | 2017-05-31 | 中国华能集团清洁能源技术研究院有限公司 | A kind of solar energy cogeneration system complementary with coal fired power plant and method |
| CN113865118A (en) * | 2021-09-15 | 2021-12-31 | 吉林省电力科学研究院有限公司 | Light energy access coal-fired unit and light-coal energy complementary load adjusting method |
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