CN110030048A - A kind of S-CO2Recycle the nuclear power generating system combined with ORC circulation and heat circulation method - Google Patents

A kind of S-CO2Recycle the nuclear power generating system combined with ORC circulation and heat circulation method Download PDF

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CN110030048A
CN110030048A CN201910351284.1A CN201910351284A CN110030048A CN 110030048 A CN110030048 A CN 110030048A CN 201910351284 A CN201910351284 A CN 201910351284A CN 110030048 A CN110030048 A CN 110030048A
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heat
import
outlet
cryogenic
working medium
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CN110030048B (en
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余万
龚棋超
高丹
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China Three Gorges University CTGU
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China Three Gorges University CTGU
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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
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • 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
    • F01K13/00—General layout or general methods of operation of complete plants
    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure

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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

A kind of S-CO2 circulation recycles the nuclear power generating system combined and heat circulation method, including heat source loop, S-CO with ORC2Circulation loop and the circuit ORC, nuclear power plant's primary Ioops are as heat source loop, and heat passes through high-temperature heat-exchanging respectively and cryogenic heat exchanger passes to S-CO2Circulation loop and the circuit ORC, S-CO2The cold source of circulation loop can be used as the low-temperature heat source in the circuit ORC to realize the cascade utilization of thermal energy.S-CO2Circulation loop using precommpression and shunt recompression combine by the way of, can effectively improve circulation the thermal efficiency and net output work.

Description

A kind of S-CO2It recycles and recycles the nuclear power generating system and heat circulation combined with ORC Method
Technical field
The present invention relates to nuclear power generating system, especially a kind of S-CO2It recycles and recycles the nuclear power generating system combined with ORC And heat circulation method.
Background technique
Today's society, the development of the mankind are faced with two significant problems: energy and environment, and exploitation new energy is compeled in eyebrow Eyelash, the Optimum utilization of the various energy also becomes the emphasis research topic of each experts and scholars, and new cleaning fuel is then resource The most important thing in exploitation.Nuclear energy becomes focus development as a kind of new energy, by the features such as its cleanliness without any pollution Resource, although nowadays the research emphasis of nuclear energy is still in nuclear reactor and one time due to nuclear radiation and nuclear leakage etc. In the research on road, but the research for relating to secondary circuit generating efficiency is fewer.
Now, supercritical CO2Brayton cycle in nuclear energy power generation using upper relatively conventional, but the high warm of primary Ioops It can be via high-temperature heat-exchanging and CO2Still there is higher temperature after heat exchange, so can be by supercritical CO2Brayton cycle with it is organic bright Agree circulation combination to generate electricity.However, supercritical CO2It to be cooled down after cryogenic regenerator, this partial heat will be by Cooling medium is taken away to fail preferably to be utilized so as to cause this partial heat, produces thermal loss, therefore be contemplated that it Preheater as Organic Rankine Cycle comes using improving energy utilization efficiency to reduce energy loss.
Prior art center, recompression Brayton cycle will be shunted by, which also having, combines with Rankine cycle and is used for the two of nuclear power station Circuit generates electricity, and shunts and recompresses Brayton cycle only thermal efficiency of cycle with higher, but the output work of its circulation It is not high therefore not high to the utilization rate of thermal energy.
And precommpression has higher output power, the two combination can make to circulate in preferable thermal efficiency of cycle Guarantee higher output work simultaneously.
Summary of the invention
The technical problem to be solved by the present invention is to a kind of S-CO2Circulation and ORC recycle the nuclear power generating system that is combined and Heat circulation method, can exchange heat in effective use system heat, improve thermal efficiency of cycle.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of S-CO2Circulation is tied with ORC circulation The nuclear power generating system of conjunction, including heat source loop, S-CO2Circulation loop and the circuit ORC；
The heat source loop includes high-temperature heat-exchanging, cryogenic heat exchanger and coolant pump, the first import of high-temperature heat-exchanging with Nuclear reactor connection, the first outlet of high-temperature heat-exchanging and the first import of cryogenic heat exchanger connect, and the first of cryogenic heat exchanger Outlet is connect with the import of coolant pump；
The S-CO2Circulation loop includes high-temperature heat-exchanging, high temperature regenerator, cryogenic regenerator, cooler, compressor, again Compressor, precompactors, turbine, the second import of high-temperature heat-exchanging are connect with the first outlet of high temperature regenerator, high-temperature heat-exchanging Second outlet and the import of turbine connect, the first import of high temperature regenerator is connected with the second outlet of cryogenic regenerator, height Second import of warm regenerator is connected with the outlet of turbine, and the second outlet of high temperature regenerator is connected with the import of precompactors, The outlet of precompactors is connected with the first import of cryogenic regenerator, the first outlet of cryogenic regenerator and cooler first into Mouthful connection, the first outlet of cryogenic regenerator connect with the import of the machine of recompression, recompresses outlet and the cryogenic regenerator of machine The import of second import connection, the first outlet of cooler and compressor connects, and the of the outlet of compressor and cryogenic regenerator Two imports connection；
The circuit ORC includes cryogenic heat exchanger, expanding machine, condenser, working medium pump, cooler, and the second of cryogenic heat exchanger Outlet is connect with the import of expanding machine, and the second import of cryogenic heat exchanger and the second outlet of cooler connect, and expanding machine goes out Mouthful be connected with the import of condenser, the outlet of condenser is connected with the import of working medium pump, working medium pump discharge and cooler second into Mouth is connected, and condensed saturation working medium is sent in cooler and CO via working medium pump2Gas exchanges heat.
In preferred scheme, the S-CO2Supercritical CO is used in circulation loop2As working medium, ORC is used in circuit R123 or R227ea are as working medium.
In preferred scheme, the S-CO2Cooler in circulation loop is used as the preheater in the circuit ORC simultaneously Preheat organic working medium.
In preferred scheme, the S-CO2Organic working medium is converted to saturation by cryogenic heat exchanger and steams in circulation loop Vapour or superheated steam.
In preferred scheme, the cooling medium in the condenser is water.
In preferred scheme, the turbine is also connect with the first generator, and the expanding machine also connects with the second generator It connects.
A kind of S-CO2Recycle the heat circulation method of the nuclear power generating system combined with ORC circulation, including S-CO2It is recycled back to Road and the circuit ORC；
The S-CO2Circulation loop the following steps are included:
1) nuclear reactor will be sent into high-temperature heat-exchanging after coolant heating and be heated；
2) coolant heats CO in high-temperature heat-exchanging2Gas generates supercritical CO2Gas；
3) supercritical CO2Gas is sent into turbine and does manual work, and the first electrical power generators are driven；
4) supercritical CO2While workmanship in gas feeding turbine, compressor, recompression machine, precompactors workmanship are driven；
5) the high-temperature low-pressure CO after doing manual work2Gas enters the CO in high temperature regenerator with cryogenic regenerator output2Gas realization is changed Heat；
6) the high-temperature low-pressure CO after exchanging heat2Gas is sent into precompactors and carries out precommpression operation；
7) CO after precommpression2Gas enters in cryogenic regenerator to carry out with the gas mixture flow by compressor, recompression machine Heat exchange；
8) the gas flow point stream after heat exchange is completed, a part enters compressor after condenser, and another part enters recompression machine；
9) by the CO of compressor and recompression machine output2After gas mixing, mixed gas absorbs cryogenic regenerator and high temperature respectively After the heat of regenerator, into high-temperature heat-exchanging, circulation is realized；
The circuit ORC the following steps are included:
1) it is preheated by organic working medium of the cooler to ORC；
2) organic working medium after preheating is sent into high-temperature heat-exchanging and is heated；
3) coolant after high-temperature heat-exchanging, which is fed again into cryogenic heat exchanger, heats organic working medium；
4) organic working medium after heating, which is sent into expanding machine, expands workmanship, drives the second electrical power generators；
5) steam exhaust generated is pumped into expanding machine by working medium and absorbs S-CO after condenser condenses2CO in circulation2Working medium condensation Heat in the process；
6) it finally enters in cryogenic heat exchanger and heats, form circulation.
In preferred scheme, it is anti-that the coolant is fed again into core by coolant pump after exchanging heat through cryogenic heat exchanger It answers and absorbs the heat that nuclear fuel generates in heap.
A kind of S-CO provided by the present invention2The nuclear power generating system combined with ORC circulation and heat circulation method are recycled, By using above structure, it can realize under the premise of making full use of the heat in nuclear power plant's primary Ioops and recycle condensation Exchange heat heat in device, and simultaneously preheats the organic working medium in the circuit ORC, improves and enters working medium in cryogenic heat exchanger Enthalpy, the thermal efficiency of circulation can be improved.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is block diagram of the invention.
In figure: high-temperature heat-exchanging 1, high temperature regenerator 2, cryogenic regenerator 3, cooler 4, compressor 5 recompress machine 6, in advance Compressor 7, turbine 8, cryogenic heat exchanger 9, expanding machine 10, condenser 11, working medium pump 12, the first generator 13, the second generator 14, nuclear reactor 15, coolant pump 16.
Specific embodiment
Embodiment 1:
As shown in figure 1, a kind of S-CO2It recycles and recycles the nuclear power generating system combined, including heat source loop, S-CO with ORC2It is recycled back to Road and the circuit ORC；
The heat source loop includes high-temperature heat-exchanging 1, cryogenic heat exchanger 9 and coolant pump 16, high-temperature heat-exchanging 1 first into Mouth is connect with nuclear reactor 15, and the first outlet of high-temperature heat-exchanging 1 is connect with the first import of cryogenic heat exchanger 9, low-temperature heat exchange The first outlet of device 9 is connect with the import of coolant pump 16；
The S-CO2Circulation loop includes high-temperature heat-exchanging 1, high temperature regenerator 2, cryogenic regenerator 3, cooler 4, compressor 5, machine 6, precompactors 7, turbine 8 are recompressed, 1 second import of high-temperature heat-exchanging connect with the first outlet of high temperature regenerator 2, connects Receive the CO heated by high temperature regenerator 22The second outlet of gas, high-temperature heat-exchanging 1 is connect with the import of turbine 8, will be heated High temperature and pressure CO afterwards2Gas is sent into expansion work in turbine 8, and the of the first import of high temperature regenerator 2 and cryogenic regenerator 3 Two outlets are connected, and receive the CO after exchanging heat via cryogenic regenerator 32Gas, the second import and the turbine 8 of high temperature regenerator 2 Outlet is connected, and receives the steam exhaust for finishing function, and the second outlet of high temperature regenerator 2 is connected with the import of precompactors 7, will be in high temperature Regenerator 2 and low temperature CO2Steam exhaust after gas converting heat carries out precommpression, the outlet of precompactors 7 and the first of cryogenic regenerator 3 Import is connected, and compressed steam exhaust is sent in cryogenic regenerator and is exchanged heat, the first outlet and cooling of cryogenic regenerator 3 First import of device 4 connects, and condenses to the steam exhaust after exchanging heat via cryogenic regenerator 3, the first outlet of cryogenic regenerator 3 It is connect with the import of recompression machine 6, to the part CO of shunting2Gas is compressed, and outlet and the cryogenic regenerator of machine 6 are recompressed 3 the second import connection, by the CO of recompression2The gas mixing compressed after gas and cooling is sent into cryogenic regenerator 3, cooler 4 first outlet is connect with the import of compressor 5, and gas after cooling is compressed, the outlet and low temperature backheat of compressor 5 Second import of device 3 is connected compressed cryogenic high pressure CO2Gas, which is sent in cryogenic regenerator 3, to absorb heat；
The circuit ORC includes cryogenic heat exchanger 9, expanding machine 10, condenser 11, working medium pump 12, cooler 4, low-temperature heat exchange The second outlet of device 9 is connect with the import of expanding machine 10, and the working medium after being heated by cryogenic heat exchanger 9 is sent in expanding machine 10 Second import of expansion work, cryogenic heat exchanger 9 is connect with the second outlet of cooler 4, receive in cooler 4 with CO2Gas Body exchanged heat after organic working medium, the outlet of expanding machine 10 is connected with the import of condenser 11, and the steam exhaust that will finish function carries out Condensation, the outlet of condenser 11 are connected with the import of working medium pump 12, and the outlet of working medium pump 12 is connected with 4 second import of cooler, cold Saturation working medium after solidifying is sent in cooler 4 and CO via working medium pump 122Gas exchanges heat.
In preferred scheme, the S-CO2Supercritical CO is used in circulation loop2As working medium, ORC is used in circuit R123 or R227ea can be selected as working medium in low-boiling-point organic compound.
In preferred scheme, S-CO2The pattern combined using precommpression with recompression in circulation loop, supercritical CO2Saturating Its pressure can be down to critical pressure hereinafter, being compressed to critical pressure or more by precompactors again, together after expansion working in flat Shi Jinhang shunts recompression to improve the folder point problem of heat exchanger.
In preferred scheme, S-CO2High temperature regenerator and cryogenic regenerator are provided in circulation loop to improve thermal energy benefit Use efficiency.
In preferred scheme, S-CO2It is circularly set compressor, precompactors, recompression machine, first to CO2Gas carries out Then precommpression carries out shunting recompression.
In preferred scheme, the S-CO2Cooler 4 in circulation loop is simultaneously as the preheater in the circuit ORC To preheat organic working medium.
In preferred scheme, the S-CO2Organic working medium is converted to saturation by cryogenic heat exchanger 9 and steams in circulation loop Vapour or superheated steam.
In preferred scheme, the cooling medium in the condenser 11 is water.
In preferred scheme, the turbine 8 is also connect with the first generator 13, and the expanding machine 10 also generates electricity with second Machine 14 connects.
Embodiment 2:
A kind of S-CO2Recycle the heat circulation method of the nuclear power generating system combined with ORC circulation, including S-CO2Circulation loop With the circuit ORC；
The S-CO2Circulation loop the following steps are included:
1) nuclear reactor 15 will be sent into high-temperature heat-exchanging 1 after coolant heating and be heated；
2) coolant heats CO in high-temperature heat-exchanging 12Gas generates supercritical CO2Gas；
3) supercritical CO2Gas is sent into turbine 8 and does manual work, and the power generation of the first generator 13 is driven；
4) supercritical CO2While workmanship in gas feeding turbine 8, compressor 5, recompression machine 6, precompactors 7 is driven to do manual work；
5) the high-temperature low-pressure CO after doing manual work2Gas enters the CO exported in high temperature regenerator 2 with cryogenic regenerator 32Gas is realized Heat exchange；
6) the high-temperature low-pressure CO after exchanging heat2Gas is sent into precompactors 7 and carries out precommpression operation；
7) CO after precommpression2Gas enters in cryogenic regenerator 3 to be flowed into the gas mixing by compressor 5, recompression machine 6 Row heat exchange；
8) the gas flow point stream after heat exchange is completed, a part enters compressor 5 after condenser 11, and another part enters recompression Machine 6；
9) CO exported by compressor 5 and recompression machine 62After gas mixing, mixed gas absorbs cryogenic regenerator 3 and height respectively After the heat of warm regenerator 2, into high-temperature heat-exchanging 1, circulation is realized；
The circuit ORC the following steps are included:
1) it is preheated by organic working medium of the cooler 4 to ORC；
2) organic working medium after preheating is sent into high-temperature heat-exchanging 1 and is heated；
3) coolant after high-temperature heat-exchanging 1 is fed again into cryogenic heat exchanger 9 and heats to organic working medium；
4) organic working medium after heating, which is sent into expanding machine 10, expands workmanship, drives the power generation of the second generator 14；
5) steam exhaust generated is sent into expanding machine 10 by working medium pump 12 and absorbs S-CO after the condensation of condenser 112CO in circulation2Work Heat in matter condensation process；
6) it finally enters and is heated in cryogenic heat exchanger 9, form circulation.
In preferred scheme, the coolant is fed again into after exchanging heat through cryogenic heat exchanger 9 by coolant pump 16 The heat that nuclear fuel generates is absorbed in nuclear reactor 15.
Using the above structure and method, it can be realized back under the premise of making full use of the heat in nuclear power plant's primary Ioops It receives using the heat that exchanges heat in condenser, and simultaneously preheats the organic working medium in the circuit ORC, improve and enter low temperature and change The enthalpy of working medium in hot device, can be improved the thermal efficiency of circulation.

Claims (8)

1. a kind of supercritical CO2Recycle nuclear power generating system with Organic Rankine Cycle in conjunction with, it is characterized in that: including heat source loop, S-CO2Circulation loop and the circuit ORC；
The heat source loop includes high-temperature heat-exchanging (1), cryogenic heat exchanger (9) and coolant pump (16), high-temperature heat-exchanging (1) The first import connect with nuclear reactor (15), the first import of the first outlet of high-temperature heat-exchanging (1) and cryogenic heat exchanger (9) Connection, the first outlet of cryogenic heat exchanger (9) are connect with the import of coolant pump (16)；
The S-CO2Circulation loop includes high-temperature heat-exchanging (1), high temperature regenerator (2), cryogenic regenerator (3), cooler (4), compressor (5), recompression machine (6), precompactors (7), turbine (8), (1) second import of high-temperature heat-exchanging and high temperature backheat The first outlet of device (2) connects, and the second outlet of high-temperature heat-exchanging (1) is connect with the import of turbine (8), high temperature regenerator (2) The first import be connected with the second outlet of cryogenic regenerator (3), the second import of high temperature regenerator (2) and turbine (8) go out Mouth is connected, and the second outlet of high temperature regenerator (2) is connected with the import of precompactors (7), the outlet of precompactors (7) and low temperature First import of regenerator (3) is connected, and the first outlet of cryogenic regenerator (3) is connect with the first import of cooler (4), low temperature The first outlet of regenerator (3) is connect with the import of recompression machine (6), recompresses the outlet and cryogenic regenerator (3) of machine (6) Second import connection, the first outlet of cooler (4) are connect with the import of compressor (5), and the outlet of compressor (5) and low temperature return Second import of hot device (3) connects；
The circuit ORC includes cryogenic heat exchanger (9), expanding machine (10), condenser (11), working medium pump (12), cooler (4), the second outlet of cryogenic heat exchanger (9) is connect with the import of expanding machine (10), the second import of cryogenic heat exchanger (9) with it is cold But the second outlet connection of device (4), the outlet of expanding machine (10) are connected with the import of condenser (11), the outlet of condenser (11) It is connected with the import of working medium pump (12), working medium pump (12) outlet is connected with (4) second import of cooler, condensed saturation working medium It is sent in cooler (4) and CO via working medium pump (12)2Gas exchanges heat.
2. a kind of supercritical CO according to claim 12The nuclear power generating system in conjunction with Organic Rankine Cycle is recycled, It is characterized in that: the S-CO2Supercritical CO is used in circulation loop2As working medium, R123 or R227ea is used in the circuit ORC As working medium.
3. a kind of supercritical CO according to claim 12The nuclear power generating system in conjunction with Organic Rankine Cycle is recycled, It is characterized in that: the S-CO2Cooler (4) in circulation loop is organic to preheat as the preheater in the circuit ORC simultaneously Working medium.
4. a kind of supercritical CO according to claim 22The nuclear power generating system in conjunction with Organic Rankine Cycle is recycled, It is characterized in that: the S-CO2Organic working medium is converted to saturated vapor by cryogenic heat exchanger (9) in circulation loop or overheat is steamed Vapour.
5. a kind of supercritical CO according to claim 12The nuclear power generating system in conjunction with Organic Rankine Cycle is recycled, Be characterized in that: the cooling medium in the condenser (11) is water.
6. a kind of supercritical CO according to claim 12The nuclear power generating system in conjunction with Organic Rankine Cycle is recycled, Be characterized in that: the turbine (8) also connect with the first generator (13), the expanding machine (10) also with the second generator (14) Connection.
7. a kind of supercritical CO described in -6 any one according to claim 12Recycle the nuclear energy hair in conjunction with Organic Rankine Cycle The heat circulation method of electric system, it is characterised in that including S-CO2Circulation loop and the circuit ORC；
S-CO2Circulation loop the following steps are included:
1) nuclear reactor (15) will be sent into heating in high-temperature heat-exchanging (1) after coolant heating；
2) coolant heats CO in high-temperature heat-exchanging (1)2Gas generates supercritical CO2Gas；
3) supercritical CO2Gas is sent into workmanship in turbine (8), drives the first generator (13) power generation；
4) supercritical CO2While gas is sent into workmanship in turbine (8), compressor (5), recompression machine (6), precompactors are driven (7) it does manual work；
5) the high-temperature low-pressure CO after doing manual work2Gas enters the CO in high temperature regenerator (2) with cryogenic regenerator (3) output2Gas is real Now exchange heat；
6) the high-temperature low-pressure CO after exchanging heat2Gas is sent into precompactors (7) and carries out precommpression operation；
7) CO after precommpression2Gas enters mixed with the gas by compressor (5), recompression machine (6) in cryogenic regenerator (3) Interflow exchanges heat；
8) the gas flow point stream after heat exchange is completed, a part enters compressor (5) after condenser (11), and another part enters again Compressor (6)；
9) by the CO of compressor (5) and recompression machine (6) output2After gas mixing, mixed gas absorbs cryogenic regenerator respectively (3) and after the heat of high temperature regenerator (2), into high-temperature heat-exchanging (1), circulation is realized；
The circuit ORC the following steps are included:
1) organic working medium of ORC is preheated by cooler (4)；
2) organic working medium after preheating is sent into heating in high-temperature heat-exchanging (1)；
3) coolant after high-temperature heat-exchanging (1) is fed again into cryogenic heat exchanger (9) and heats to organic working medium；
4) organic working medium after heating is sent into expansion workmanship in expanding machine (10), drives the second generator (14) power generation；
5) steam exhaust generated is sent into expanding machine (10) by working medium pump (12) and absorbs S-CO after condenser (11) condensation2In circulation CO2Heat in working medium condensation process；
6) heating in cryogenic heat exchanger (9) is finally entered, circulation is formed.
8. a kind of supercritical CO according to claim 72Recycle the heat of the nuclear power generating system in conjunction with Organic Rankine Cycle Can round-robin method, it is characterised in that: the coolant after cryogenic heat exchanger (9) heat exchange by coolant pump (16) again It is sent into nuclear reactor (15) and absorbs the heat that nuclear fuel generates.
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CN110671205A (en) * 2019-10-10 2020-01-10 中南大学 LNG-based gas turbine-supercritical CO2ORC cycle series power generation system
CN110821586A (en) * 2019-10-29 2020-02-21 中国神华能源股份有限公司国华电力分公司 Thermodynamic cycle power generation system and method
CN110905611A (en) * 2019-11-28 2020-03-24 中南大学 Combined supply system based on organic Rankine cycle and supercritical carbon dioxide cycle
CN113123839A (en) * 2019-12-30 2021-07-16 上海汽轮机厂有限公司 Supercritical carbon dioxide circulation system
CN114439558A (en) * 2022-01-07 2022-05-06 哈尔滨工业大学 Spatial nuclear power system based on mixed working medium supercritical recompression Brayton-Rankine combined cycle
CN114607482A (en) * 2022-03-23 2022-06-10 西安热工研究院有限公司 High-temperature gas cooled reactor cogeneration system and method
CN115274170A (en) * 2022-08-01 2022-11-01 哈尔滨工程大学 High-thermal-efficiency Brayton and Rankine combined cycle power generation nuclear reactor system
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