CN209875220U - Peak-shaving power generation system integrating carbon dioxide circulation and liquefied air energy storage - Google Patents
Peak-shaving power generation system integrating carbon dioxide circulation and liquefied air energy storage Download PDFInfo
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Abstract
The utility model provides a peak shaving power generation system integrating carbon dioxide circulation and liquefied air energy storage, which comprises a liquid air energy storage subsystem and a supercritical carbon dioxide circulation subsystem; the liquid air energy storage subsystem comprises an air separation device, a liquid nitrogen and liquid oxygen storage tank, a liquid nitrogen and liquid oxygen pump, a high-low pressure nitrogen turbine, a nitrogen collecting device, a first generator, a heat storage device, a heat transfer medium pump, a switching valve and the like. The supercritical carbon dioxide circulation subsystem comprises a carbon dioxide circulation pump, a high-low temperature heat exchanger, a combustion chamber, a carbon dioxide turbine, a second generator, a water separator, a cooler, a liquid carbon dioxide collecting device and the like. The liquid-air energy storage subsystem stores electricity in the valley and releases the electricity during peak shaving, and the energy of natural gas is circularly converted into electricity by supercritical carbon dioxide during peak shaving, so that the system has the advantages of large energy storage capacity, strong peak shaving capacity, large-scale rapid load regulation capacity, high system efficiency, no pollution, zero emission, 100% carbon capture and high economic value of byproducts.
Description
Technical Field
The utility model relates to a peak shaving power generation system of integrated carbon dioxide circulation and liquefied air energy storage belongs to power system peak shaving and energy storage technical field.
Background
With the increasing installed capacity of new energy power generation, the power system must have sufficient peak shaving capacity to stabilize the fluctuation of new energy power. Meanwhile, the intermittent and fluctuating problems of wind power generation and solar power generation cause the phenomena of wind abandonment and light abandonment in the valley of power utilization, and large-scale energy storage technology is needed. Therefore, advanced peak shaving and energy storage technologies are an urgent need for current power systems.
While hydroelectric power is generally suitable for peak shaving, thermal power is now also involved in peak shaving, and gas turbines are increasingly being used to undertake grid peak load regulation. The pumped storage power station can store energy in a large scale and adjust peak in a large scale, is clean and green renewable energy, and is limited by geographical conditions. The compressed air energy storage system with afterburning can have the functions of energy storage and large-scale peak regulation, but carbon dioxide emission is generated.
In recent years, the development of liquefied air energy storage technology and novel gas turbine technology provides a wide exploration space for developing more advanced energy storage peak shaving power generation systems. The semi-closed direct-fired heating circulation system has the advantages of efficient power generation and low-cost carbon capture, is particularly a semi-closed direct-fired heating circulation system taking supercritical carbon dioxide as a working medium, adopts pure oxygen combustion, is provided with a large air separation unit, and naturally has hardware conditions for energy storage of liquefied air.
How to integrate a semi-closed supercritical carbon dioxide circulation system and a liquid-air energy storage system to enable the system to have large-scale energy storage and large-scale rapid load regulation capacity, and high efficiency, no pollution, zero emission and 100% carbon capture are difficult problems which are solved by technical personnel in the field. No relevant report is found in the industry of the power generation system.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how to integrate a semi-closed supercritical carbon dioxide circulating system and a liquid-air energy storage system to enable the system to have large-scale energy storage and large-scale rapid load regulation capacity, and to realize high efficiency, no pollution, zero emission and 100% carbon capture.
In order to solve the technical problem, the technical scheme of the utility model provide a peak shaver power generation system of integrated carbon dioxide circulation and liquefied air energy storage, its characterized in that: the system comprises a liquid-air energy storage subsystem and a supercritical carbon dioxide circulation subsystem;
the liquid-air energy storage subsystem comprises an air separation device, a liquid nitrogen outlet of the air separation device is connected with an inlet of a liquid nitrogen storage tank, a liquid oxygen outlet of the air separation device is connected with an inlet of the liquid oxygen storage tank, an outlet of the liquid nitrogen storage tank is connected with an inlet of a liquid oxygen pump, an outlet of the liquid nitrogen pump is connected with a nitrogen inlet of a low-temperature heat exchanger, an outlet of the liquid oxygen pump is connected with an oxygen inlet of the low-temperature heat exchanger, a nitrogen outlet of the low-temperature heat exchanger is connected with a nitrogen inlet of a high-temperature heat exchanger, a nitrogen outlet of the high-temperature heat exchanger is connected with an inlet of a high-pressure nitrogen turbine, an outlet of the high-pressure nitrogen turbine is connected with an inlet of a high-temperature reheat nitrogen, a reheat nitrogen outlet of the high-temperature heat exchanger is connected with an inlet of a low-pressure nitrogen turbine; the outlet of the heat storage device is connected with the inlet of a heat transfer medium pump, the outlet of the heat transfer medium pump is divided into two paths which are respectively connected with the heat transfer medium inlet of the air separation device and the heat transfer medium inlet of the high-temperature heat exchanger, the heat transfer medium outlet of the air separation device is connected with one inlet of the switching valve, the heat transfer medium outlet of the high-temperature heat exchanger is connected with the other inlet of the switching valve, and the outlet of;
the supercritical carbon dioxide circulation subsystem comprises a carbon dioxide circulation pump, an outlet of the carbon dioxide circulation pump is connected with a carbon dioxide inlet at the low-temperature side of a high-temperature heat exchanger, a carbon dioxide outlet at the low-temperature side of the high-temperature heat exchanger is connected with a carbon dioxide inlet of a combustion chamber, a carbon dioxide outlet of the combustion chamber is connected with a carbon dioxide turbine inlet, the carbon dioxide turbine is connected with a second generator, redundant carbon dioxide generated by combustion is pumped out from a high-pressure outlet of the carbon dioxide turbine and is connected with a high-temperature side high-pressure carbon dioxide inlet of the high-temperature heat exchanger, a high-temperature side high-pressure carbon dioxide outlet of the high-temperature heat exchanger is connected with an inlet of a first water separator, an outlet of the first water separator is connected with an inlet, the outlet of the second water separator is connected with the low-pressure carbon dioxide inlet of the low-temperature heat exchanger, and the low-pressure carbon dioxide outlet of the low-temperature heat exchanger is connected with the inlet of the carbon dioxide circulating pump; the export of liquefied natural gas storage tank connects the import of liquefied natural gas pump, and the export of liquefied natural gas pump connects low temperature heat exchanger natural gas import, and high temperature heat exchanger natural gas exit linkage high temperature heat exchanger natural gas import, high temperature heat exchanger natural gas exit linkage combustion chamber natural gas import.
Preferably, the air separation plant is a compressed cryogenic air separation plant.
Preferably, the heat transfer medium of the heat storage device is water.
Preferably, the low-temperature heat exchanger and the high-temperature heat exchanger are multi-flow heat exchangers, and comprise a combination of more than one heat exchanger in series and in parallel. The peak shaving power generation system integrating carbon dioxide circulation and liquefied air energy storage has the use method as follows: continuously operating an air separation device in the liquid air energy storage subsystem, and respectively storing prepared liquid oxygen and liquid nitrogen in a liquid oxygen storage tank and a liquid nitrogen storage tank; and adjusting the switching valve to a position where the heat storage device is only communicated with the air separation device, operating a heat transfer medium pump, and transferring the heat of the compressed gas in the air separation device to the heat storage device for storage through the heat transfer medium.
The working processes of the liquid air energy storage subsystem and the supercritical carbon dioxide circulation subsystem during peak shaving of the power grid are as follows:
and adjusting the switching valve to the position where the heat storage device is only communicated with the high-temperature heat exchanger, operating the heat transfer medium pump, and transferring the heat in the heat storage device to the high-temperature heat exchanger through the heat transfer medium.
The nitrogen pump boosts liquid nitrogen, the liquid nitrogen is heated by the low-temperature heat exchanger, then is further heated by the high-temperature heat exchanger to rise temperature, then is expanded by the high-pressure nitrogen turbine to do work, the pressure is reduced, then is reheated by the high-temperature heat exchanger, then is expanded by the low-pressure nitrogen turbine to do work, exhaust gas enters the nitrogen collecting device, and the high-pressure nitrogen turbine and the low-pressure nitrogen turbine push the first generator to generate electric power.
The liquid oxygen pump boosts the pressure of the liquid oxygen, the liquid oxygen is heated by a low-temperature heat exchanger, and then is further heated by a high-temperature heat exchanger to be heated, and finally enters a combustion chamber; the liquefied natural gas pump boosts the pressure of the liquefied natural gas, the liquefied natural gas is heated by the low-temperature heat exchanger, and then is further heated by the high-temperature heat exchanger to be heated, and finally enters the combustion chamber to be combusted with liquid oxygen.
The carbon dioxide circulating pump boosts a liquid carbon dioxide working medium, the liquid carbon dioxide working medium is heated by the high-temperature heat exchanger and then enters the combustion chamber to be heated, a mixed gas discharged from the combustion chamber enters the carbon dioxide turbine to expand and do work, the carbon dioxide turbine pushes the second generator to generate electric power, a high-pressure outlet of the carbon dioxide turbine pumps out redundant carbon dioxide generated by combustion, the carbon dioxide releases waste heat through the high-temperature heat exchanger, the carbon dioxide is dehumidified through the first water separator, and finally is cooled into liquid through the cooler to be stored in the liquid carbon dioxide collecting device, the carbon dioxide discharged from a low-pressure exhaust port of the carbon dioxide turbine releases waste heat through the high-temperature heat exchanger, is dehumidified through the second water separator.
The first generator and the second generator collectively provide peak shaver power.
Preferably, the air separation unit adjusts the output to be high in a power utilization valley or a power surplus period and adjusts the output to be low in a power utilization peak period.
Preferably, the nitrogen pump boosts the pressure of the liquid nitrogen to 3MPa or more.
Preferably, the liquid oxygen pump increases the pressure of the liquid oxygen to 15MPa or more.
Preferably, the liquefied natural gas pump boosts the pressure of the liquefied natural gas to 15MPa or more.
Preferably, the carbon dioxide circulating pump boosts the pressure of the liquid carbon dioxide working medium to be more than 15MPa, the liquid carbon dioxide working medium is heated by the high-temperature heat exchanger and then enters the combustion chamber to be heated to be more than 800 ℃, the pressure of redundant carbon dioxide generated by combustion and extracted from the high-pressure outlet of the carbon dioxide turbine is 3.8-4.2 MPa, and the pressure of carbon dioxide discharged from the low-pressure exhaust port of the carbon dioxide turbine is 0.7-1 MPa.
Preferably, the inlet medium temperature of the first water separator is above and close to the condensation temperature of carbon dioxide in the medium.
Preferably, the inlet medium temperature of the second water separator is above and near the freezing point of water in the medium.
Preferably, ice that may condense from residual moisture in the carbon dioxide turbine low pressure exhaust stream in the cryogenic heat exchanger is removed at shutdown after the peak shaving operation is complete.
Preferably, the nitrogen discharged from the high-pressure nitrogen turbine and the low-pressure nitrogen turbine is recycled for industrial use, and the waste heat generated by the air separation unit is used for heating output in addition to the system.
Preferably, the carbon dioxide collected by the carbon dioxide collection device can be used for industrial purposes, enhanced oil recovery, or sequestration.
Compared with the prior art, the utility model provides an integrated carbon dioxide circulation has following beneficial effect with peak regulation power generation system of liquefied air energy storage:
1. the energy storage device has large-scale energy storage capacity, and for a unit with the grade of more than 10MWe, liquid oxygen is used as an oxidant of a combustion chamber in a supercritical carbon dioxide cycle, the liquid oxygen demand is very large, so that the yield of liquid nitrogen used as an energy storage medium is increased in proportion, and the surplus power of a power grid can be greatly consumed through an air separation device;
2. the system has large-scale rapid load regulation capacity, the supercritical carbon dioxide circulation adopts a semi-closed direct combustion heating mode, the expansion ratio of a carbon dioxide turbine is high, the exhaust temperature of the carbon dioxide turbine is low, and the carbon dioxide turbine is rapidly cooled and liquefied by liquid nitrogen, liquid oxygen, liquefied natural gas and a carbon dioxide working medium from a carbon dioxide circulating pump, so that the starting speed of the circulation is accelerated, and the supercritical carbon dioxide circulation has no compressor and adopts a pump, so that the reliability of the system is good;
3. the system has high efficiency, no pollution, zero emission and 100 percent carbon capture, and because the supercritical carbon dioxide cycle power generation efficiency is high, and the supercritical carbon dioxide cycle adopts natural gas and pure oxygen for combustion, almost no pollution gas is generated during combustion, and the carbon dioxide generated during combustion can be directly collected, and meanwhile, the liquid air energy storage subsystem has high storage and storage cycle efficiency and no pollution;
4. the byproduct has high economic value, the air separation device can generate gas products such as argon and the like, nitrogen discharged by the nitrogen turbine can be recycled for industrial application, a large amount of waste heat generated by the air separation device can be used for system self and can be output for heating, and the captured carbon dioxide can also be used for industrial application and enhanced oil recovery.
Drawings
Fig. 1 is a schematic diagram of a peak shaving power generation system integrating carbon dioxide circulation and liquefied air energy storage provided in this embodiment;
description of reference numerals:
1-air separation plant, 2-liquid nitrogen storage tank, 3-liquid oxygen storage tank, 4-liquid nitrogen pump, 5-liquid oxygen pump, 6-low temperature heat exchanger, 7-high temperature heat exchanger, 8-high pressure nitrogen turbine, 9-nitrogen gas collection device, 10-low pressure nitrogen turbine, 11-first generator, 12-heat storage device, 13-heat transfer medium pump, 14-switching valve, 15-liquefied natural gas storage tank, 16-liquefied natural gas pump, 17-carbon dioxide circulating pump, 18-combustion chamber, 19-carbon dioxide turbine, 20-second generator, 21-first water separator, 22-cooler, 23-liquid carbon dioxide collection device, 24-second water separator.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Fig. 1 is a schematic view of a peak shaving power generation system integrating carbon dioxide circulation and liquefied air energy storage provided in this embodiment, where the peak shaving power generation system integrating carbon dioxide circulation and liquefied air energy storage includes a liquid air energy storage subsystem and a supercritical carbon dioxide circulation subsystem.
The liquid air energy storage subsystem comprises an air separation device 1, a liquid nitrogen outlet of the air separation device 1 is connected with an inlet of a liquid nitrogen storage tank 2, a liquid oxygen outlet of the air separation device 1 is connected with an inlet of a liquid oxygen storage tank 3, an outlet of the liquid nitrogen storage tank 2 is connected with an inlet of a liquid nitrogen pump 4, an outlet of the liquid oxygen storage tank 3 is connected with an inlet of a liquid oxygen pump 5, an outlet of the liquid oxygen pump 4 is connected with an inlet of a low-temperature heat exchanger 6, an outlet of the low-temperature heat exchanger 6 is connected with an inlet of a high-temperature heat exchanger 7, an outlet of the low-temperature heat exchanger 6 is connected with an oxygen inlet of the high-temperature heat exchanger 7, an outlet of the high-temperature heat exchanger 7 is connected with an inlet of a high-pressure nitrogen turbine 8, an outlet of the high-pressure nitrogen turbine 8 is connected with an inlet of the high-temperature heat exchanger 7, an, an oxygen outlet of the high-temperature heat exchanger 7 is connected with an oxygen inlet of a combustion chamber 18 of the supercritical carbon dioxide subsystem; the outlet of the heat storage device 12 is connected with the inlet of a heat transfer medium pump 13, the outlet of the heat transfer medium pump 13 is divided into two paths to be respectively connected with the heat transfer medium inlet of the air separation device 1 and the heat transfer medium inlet of the high-temperature heat exchanger 7, the heat transfer medium outlet of the air separation device 1 is connected with one inlet of a switching valve 14, the heat transfer medium outlet of the high-temperature heat exchanger 7 is connected with the other inlet of the switching valve 14, and the outlet of the switching valve.
The supercritical carbon dioxide circulation subsystem comprises a carbon dioxide circulation pump 17, an outlet of the carbon dioxide circulation pump 17 is connected with a carbon dioxide inlet at the low-temperature side of the high-temperature heat exchanger 7, a carbon dioxide outlet at the low-temperature side of the high-temperature heat exchanger 7 is connected with a carbon dioxide inlet at the combustion chamber 18, a carbon dioxide outlet at the combustion chamber 18 is connected with an inlet of a carbon dioxide turbine 19, the carbon dioxide turbine 19 is connected with a second power generator 20, redundant carbon dioxide generated by combustion is pumped out from a high-pressure outlet of the carbon dioxide turbine 19 and is connected with a high-temperature side high-pressure carbon dioxide inlet of the high-temperature heat exchanger 7, a high-temperature side high-pressure carbon dioxide outlet of the high-temperature heat exchanger 7 is connected with an inlet of a first water separator, a low-pressure carbon dioxide outlet of the high-temperature heat exchanger 7 is connected with an inlet of a second water separator 24, an outlet of the second water separator 24 is connected with a low-pressure carbon dioxide inlet of the low-temperature heat exchanger 6, and a low-pressure carbon dioxide outlet of the low-temperature heat exchanger 6 is connected with an inlet of a carbon dioxide circulating pump 17; an outlet of the liquefied natural gas storage tank 15 is connected with an inlet of a liquefied natural gas pump 16, an outlet of the liquefied natural gas pump 16 is connected with a natural gas inlet of the low-temperature heat exchanger 6, a natural gas outlet of the low-temperature heat exchanger 6 is connected with a natural gas inlet of the high-temperature heat exchanger 7, and a natural gas outlet of the high-temperature heat exchanger 7 is connected with a natural gas inlet of the combustion.
The peak shaving power generation system integrating carbon dioxide circulation and liquefied air energy storage provided by the embodiment comprises the following specific steps:
the air separation device 1 in the liquid air energy storage subsystem continuously operates, the output is adjusted to be high in the electricity utilization valley or the electricity surplus period, the output is adjusted to be low in the electricity utilization peak, and electricity is used for preparing liquid oxygen and liquid nitrogen in the most economical mode and is stored in the liquid oxygen storage tank 3 and the liquid nitrogen storage tank 2 respectively. The switching valve 14 is adjusted to a position where the heat storage apparatus 12 communicates only with the air separation apparatus 1, and the heat transfer medium pump 13 is operated to transfer heat of the compressed gas in the air separation apparatus 1 to the heat storage apparatus 12 through the heat transfer medium for storage.
The liquid air energy storage subsystem and the supercritical carbon dioxide circulation subsystem are quickly started when the peak load of the power grid is regulated, meanwhile, the switching valve 14 is regulated to the position where the heat storage device 12 is only communicated with the high-temperature heat exchanger 7, the heat transfer medium pump 13 runs, and heat in the heat storage device 12 is transferred to the high-temperature heat exchanger 7 through the heat transfer medium.
The liquid nitrogen pump 4 boosts the pressure of the liquid nitrogen to 10MPa, the liquid nitrogen is heated by the low-temperature heat exchanger 6, further heated by the high-temperature heat exchanger 7 and expanded by the high-pressure nitrogen turbine 8 to do work, the pressure is reduced to 2MPa, the liquid nitrogen is reheated by the high-temperature heat exchanger 7 and expanded by the low-pressure nitrogen turbine 10 to do work, exhaust gas enters the nitrogen collecting device 9, and the high-pressure nitrogen turbine 8 and the low-pressure nitrogen turbine 10 push the first generator 11 to generate electric power; the liquid oxygen is boosted to 35MPa by the liquid oxygen pump 5, heated by the low-temperature heat exchanger 6, further heated by the high-temperature heat exchanger 7, and finally enters the combustion chamber 18 to be combusted with natural gas; the liquefied natural gas pump 16 boosts the pressure of the liquefied natural gas to be more than 35MPa, the liquefied natural gas is heated by the low-temperature heat exchanger 6, is further heated by the high-temperature heat exchanger 7, and finally enters the combustion chamber 18 for combustion; meanwhile, the switching valve 14 is adjusted to a position where the heat storage device 12 is communicated only with the reheater 9, and the heat transfer medium pump 13 is operated to transfer the heat in the heat storage device 12 to the reheater 9 through the heat transfer medium; the carbon dioxide circulating pump 17 boosts the liquid carbon dioxide working medium to 35MPa, the liquid carbon dioxide working medium is heated by the high-temperature heat exchanger 7, then enters the combustion chamber 18 to be heated to 1100 ℃, the mixed gas discharged from the combustion chamber 18 enters the carbon dioxide turbine 19 to expand and do work, the carbon dioxide turbine 19 pushes the second generator 20 to generate electric power, the redundant carbon dioxide generated by combustion is extracted from the high-pressure outlet of the carbon dioxide turbine 19, the pressure of the carbon dioxide is about 4MPa, the waste heat is released by the high-temperature heat exchanger 7, then the carbon dioxide is dehumidified by the first water separator 21, finally the carbon dioxide is cooled into liquid by the cooler 22 and stored in the liquid carbon dioxide collecting device 23, the pressure of the carbon dioxide discharged from the low-pressure exhaust port of the carbon dioxide turbine 19 is 0.8MPa, the waste heat is released by the high-temperature heat exchanger 7, then the, and finally to the carbon dioxide circulation pump 17. The first generator 11 and the second generator 20 together provide peak shaving power.
Through the operation mode, the electric power stored by the liquid-air energy storage subsystem in the valley is released in the peak regulation process, and the energy of the natural gas is converted into the electric power by the supercritical carbon dioxide in the peak regulation process, so that the system is large in energy storage capacity and strong in peak regulation capacity.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be termed a second element, and, similarly, a second element may be termed a first element, without departing from the scope of example embodiments.
The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the present invention in any way and in any way, and it should be understood that modifications and additions may be made by those skilled in the art without departing from the method of the present invention, and such modifications and additions are also considered to be within the scope of the present invention. Those skilled in the art can make various changes, modifications and evolutions equivalent to those made by the above-disclosed technical content without departing from the spirit and scope of the present invention, and all such changes, modifications and evolutions are equivalent embodiments of the present invention; meanwhile, any changes, modifications and evolutions of equivalent changes to the above embodiments according to the actual technology of the present invention are also within the scope of the technical solution of the present invention.
Claims (2)
1. The utility model provides an integrated peak shaver power generation system of carbon dioxide circulation and liquefied air energy storage which characterized in that: the system comprises a liquid-air energy storage subsystem and a supercritical carbon dioxide circulation subsystem;
the liquid air energy storage subsystem comprises an air separation device (1), a liquid nitrogen outlet of the air separation device (1) is connected with an inlet of a liquid nitrogen storage tank (2), a liquid oxygen outlet of the air separation device (1) is connected with an inlet of a liquid oxygen storage tank (3), an outlet of the liquid nitrogen storage tank (2) is connected with an inlet of a liquid nitrogen pump (4), an outlet of the liquid oxygen storage tank (3) is connected with an inlet of a liquid oxygen pump (5), an outlet of the liquid nitrogen pump (4) is connected with an inlet of a low-temperature heat exchanger (6) nitrogen, an outlet of the liquid oxygen pump (5) is connected with an inlet of a low-temperature heat exchanger (6) oxygen, an outlet of the low-temperature heat exchanger (6) is connected with an inlet of a high-temperature heat exchanger (7) oxygen, an outlet of the high-temperature heat exchanger (7) is connected with an inlet of a high-pressure nitrogen turbine (8), an outlet of the high-pressure nitrogen turbine (8) is connected with, the outlet of the low-pressure nitrogen turbine (10) is connected with a nitrogen collecting device (9), the high-pressure nitrogen turbine (8) and the low-pressure nitrogen turbine (10) are coaxially connected with a first generator (11), and the oxygen outlet of the high-temperature heat exchanger (7) is connected with the oxygen inlet of a combustion chamber (18) of the supercritical carbon dioxide subsystem; the outlet of the heat storage device (12) is connected with the inlet of a heat transfer medium pump (13), the outlet of the heat transfer medium pump (13) is divided into two paths to be respectively connected with the heat transfer medium inlet of the air separation device (1) and the heat transfer medium inlet of the high-temperature heat exchanger (7), the heat transfer medium outlet of the air separation device (1) is connected with one inlet of a switching valve (14), the heat transfer medium outlet of the high-temperature heat exchanger (7) is connected with the other inlet of the switching valve (14), and the outlet of the switching valve (14) is connected with the inlet;
the supercritical carbon dioxide circulation subsystem comprises a carbon dioxide circulation pump (17), the outlet of the carbon dioxide circulation pump (17) is connected with the carbon dioxide inlet of the high-temperature heat exchanger (7), the carbon dioxide outlet of the high-temperature heat exchanger (7) is connected with the carbon dioxide inlet of the combustion chamber (18), the carbon dioxide outlet of the combustion chamber (18) is connected with the inlet of the carbon dioxide turbine (19), the carbon dioxide turbine (19) is connected with the second power generator (20), the redundant carbon dioxide generated by combustion is extracted from the high-pressure outlet of the carbon dioxide turbine (19) and is connected with the high-pressure carbon dioxide inlet of the high-temperature heat exchanger (7), the high-pressure carbon dioxide outlet of the high-temperature heat exchanger (7) is connected with the inlet of the first water separator (21), the outlet of the first water separator (21) is connected with the inlet of the cooler (22), the outlet of the, a low-pressure carbon dioxide outlet of the high-temperature heat exchanger (7) is connected with an inlet of a second water separator (24), an outlet of the second water separator (24) is connected with a low-pressure carbon dioxide inlet of the low-temperature heat exchanger (6), and a low-pressure carbon dioxide outlet of the low-temperature heat exchanger (6) is connected with an inlet of a carbon dioxide circulating pump (17); an outlet of the liquefied natural gas storage tank (15) is connected with an inlet of a liquefied natural gas pump (16), an outlet of the liquefied natural gas pump (16) is connected with an inlet of a natural gas of the low-temperature heat exchanger (6), an outlet of the natural gas of the low-temperature heat exchanger (6) is connected with an inlet of a natural gas of the high-temperature heat exchanger (7), and an outlet of the natural gas of the high-temperature heat exchanger (7) is connected with an inlet of a.
2. The peak shaving power generation system integrating carbon dioxide recycling and liquefied air energy storage according to claim 1, wherein: the air separation plant is a compression copious cooling air separation plant.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812304A (en) * | 2019-03-06 | 2019-05-28 | 上海发电设备成套设计研究院有限责任公司 | The peaking generation system and method for integrated carbon dioxide recycle and liquefied air energy storage |
| CN113670003A (en) * | 2021-07-29 | 2021-11-19 | 北京科技大学 | High-safety energy storage, power generation and substance recovery external compression air separation process flow |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812304A (en) * | 2019-03-06 | 2019-05-28 | 上海发电设备成套设计研究院有限责任公司 | The peaking generation system and method for integrated carbon dioxide recycle and liquefied air energy storage |
| CN109812304B (en) * | 2019-03-06 | 2023-08-29 | 上海发电设备成套设计研究院有限责任公司 | Peak regulation power generation system and method integrating carbon dioxide circulation and liquefied air energy storage |
| CN113670003A (en) * | 2021-07-29 | 2021-11-19 | 北京科技大学 | High-safety energy storage, power generation and substance recovery external compression air separation process flow |
| CN113670003B (en) * | 2021-07-29 | 2022-08-09 | 北京科技大学 | High-safety energy storage, power generation and substance recovery external compression air separation process flow |
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