CN218093316U - Carbon dioxide energy storage and power generation system - Google Patents
Carbon dioxide energy storage and power generation system Download PDFInfo
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- CN218093316U CN218093316U CN202222013964.2U CN202222013964U CN218093316U CN 218093316 U CN218093316 U CN 218093316U CN 202222013964 U CN202222013964 U CN 202222013964U CN 218093316 U CN218093316 U CN 218093316U
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Abstract
The utility model discloses a carbon dioxide energy storage and power generation system, which comprises a low-temperature carbon dioxide storage tank, a first heat exchanger, a carbon dioxide turbine generator, a compressor, a second heat exchanger and a flash tank, wherein the carbon dioxide storage tank, the first heat exchanger, the carbon dioxide turbine generator, the compressor, the second heat exchanger and the flash tank are sequentially communicated through pipelines, and the flash tank is communicated with the low-temperature carbon dioxide storage tank through pipelines; the utility model provides an entire system recycles, simple structure to, the direct liquefaction of carbon dioxide gas who utilizes the lithium bromide unit after will expanding the electricity generation system of reserveing can greatly reduce the volume of carbon dioxide gas holder, reduces investment and occupation of land, reaches the effect of energy storage, electricity generation and peak regulation simultaneously.
Description
Technical Field
The utility model belongs to the technical field of power generation facility, concretely relates to carbon dioxide energy storage and power generation system.
Background
In recent years, energy storage technology has been rapidly developed. The energy storage system can realize large-capacity heat or energy storage, and stably releases the heat for power generation or other utilization when energy is needed.
The principle of using carbon dioxide for power generation is that in the electricity utilization valley period, redundant electric power is utilized to compress carbon dioxide gas at normal temperature and normal pressure into liquid, and heat energy generated in the compression process is stored; in the peak period of electricity utilization, the stored heat energy is utilized to heat the liquid carbon dioxide to a gas state, and a turbine (steam turbine) is driven to generate electricity.
Carbon dioxide is a non-toxic, non-flammable, high-density fluid with low critical temperature (Tc =31.1 ℃) and moderate critical pressure (Pc =7.38 MPa), and is easy to be compressed, liquefied and stored. However, the volume of the vaporized carbon dioxide expands by more than 500 times, so that the existing carbon dioxide energy storage and power generation system inevitably needs a large-scale gas storage device, and the gas storage device has large investment and needs to occupy a large land area.
Accordingly, there is a need for a carbon dioxide energy storage and generation system to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a carbon dioxide energy storage and power generation system, solves current carbon dioxide energy storage and the large-scale gas storage device of inevitable of power generation system, and the gas storage device investment is big and need occupy great land area scheduling problem.
For solving the above-mentioned problem that exists among the prior art, the utility model discloses a realize through following technical scheme:
a carbon dioxide energy storage and power generation system comprises a low-temperature carbon dioxide storage tank, a first heat exchanger, a carbon dioxide turbine generator, a compressor, a second heat exchanger and a flash tank, wherein the carbon dioxide storage tank, the first heat exchanger, the carbon dioxide turbine generator, the compressor, the second heat exchanger and the flash tank are sequentially communicated through pipelines, and the flash tank and the low-temperature carbon dioxide storage tank are communicated through pipelines.
Furthermore, the side wall of the first heat exchanger is communicated with a heat conduction oil storage tank through a pipeline, and the heat conduction oil storage tank is used for heating the first heat exchanger.
Furthermore, the side wall of the second heat exchanger is communicated with a cold water storage tank through a pipeline, and the cold water storage tank is used for cooling the second heat exchanger.
Furthermore, the side wall of the cold water storage tank is communicated with a lithium bromide unit through a pipeline, and the lithium bromide unit is used for refrigerating water in the cold water storage tank.
Furthermore, the side wall of the lithium bromide unit is communicated with a heat conduction oil storage tank through a pipeline, and the heat conduction oil storage tank is used for driving the lithium bromide unit and refrigerating water.
Furthermore, the side wall of the heat conducting oil storage tank is communicated with a solar heat collecting system through a pipeline, and the solar heat collecting system is used for heating the heat conducting oil in the heat conducting oil storage tank.
Furthermore, a fourth fluid pump is installed on a pipeline communicated between the first heat exchanger and the heat conduction oil storage tank, a second fluid pump is installed on a pipeline communicated between the second heat exchanger and the cold water storage tank, a third fluid pump is installed on a pipeline communicated between the lithium bromide unit and the cold water storage tank, a fifth fluid pump is installed on a pipeline communicated between the lithium bromide unit and the heat conduction oil storage tank, and a sixth fluid pump is installed on a pipeline communicated between the heat conduction oil storage tank and the solar heat collection system.
Furthermore, a buffer tank is also arranged on a pipeline communicated between the carbon dioxide turbine generator and the compressor.
Further, a first fluid pump is installed on a pipeline communicated between the carbon dioxide storage tank and the first heat exchanger.
Compared with the prior art, the utility model has the advantages of as follows:
the utility model discloses in, the heat energy storage that turns into high temperature conduction oil with solar energy through solar energy collection system is in the conduction oil storage tank, partly high temperature conduction oil is through first heat exchanger, carbon dioxide to coming out from the low temperature carbon dioxide storage tank heats the vaporization, high pressure carbon dioxide gas gets into carbon dioxide turbine generator electricity generation, the carbon dioxide gas who comes out is after the compressor compression, get into the cooling of second heat exchanger, become low temperature carbon dioxide liquid after the flash distillation, get into low temperature carbon dioxide storage tank again at last, entire system recycles, moreover, the steam generator is simple in structure, can greatly reduce the volume of carbon dioxide gas holder, reduce investment and take up an area of, reach the energy storage simultaneously, the effect of electricity generation and peak regulation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.
FIG. 1 is a schematic structural view of a carbon dioxide energy storage and power generation system of the present invention;
the reference numerals in the drawings mean: 1: a low temperature carbon dioxide storage tank; 2: a first heat exchanger; 3: a carbon dioxide turbine generator; 4: a buffer tank; 5: a compressor; 6: a second heat exchanger; 7: a flash tank; 8: a lithium bromide unit; 9: a cold water storage tank; 10: a heat conducting oil storage tank; 11: a solar energy collection system; 12: a first fluid pump; 13: a second fluid pump; 14: a third fluid pump; 15: a fourth fluid pump; 16: a fifth fluid pump; 17: a sixth fluid pump.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a carbon dioxide energy storage and power generation system includes a low-temperature carbon dioxide storage tank 1, a first heat exchanger 2, a carbon dioxide turbine generator 3, a compressor 5, a second heat exchanger 6, and a flash tank 7, wherein the carbon dioxide storage tank 1, the first heat exchanger 2, the carbon dioxide turbine generator 3, the compressor 5, the second heat exchanger 6, and the flash tank 7 are sequentially communicated through a pipeline, and the flash tank 7 and the low-temperature carbon dioxide storage tank 1 are communicated through a pipeline.
Specifically, the first heat exchanger 2 heats and vaporizes carbon dioxide coming out of the low-temperature carbon dioxide storage tank 1, high-pressure carbon dioxide enters the carbon dioxide turbine generator 3 for power generation, the coming carbon dioxide is compressed by the compressor 5 and then enters the second heat exchanger 6 for cooling, the carbon dioxide is changed into low-temperature carbon dioxide liquid after flash evaporation, and finally the low-temperature carbon dioxide liquid enters the low-temperature carbon dioxide storage tank 1 again, so that the whole system is recycled.
Further, the side wall of the first heat exchanger 2 is communicated with a heat conduction oil storage tank 10 through a pipeline, and the heat conduction oil storage tank 10 is used for heating the first heat exchanger 2.
The high-temperature heat conducting oil stored in the heat conducting oil storage tank 10 enters the first heat exchanger 2 through a pipeline, and heats the first heat exchanger 2.
Further, the side wall of the second heat exchanger 6 is communicated with a cold water storage tank 9 through a pipeline, and the cold water storage tank 9 is used for cooling the second heat exchanger 6.
The cold water stored in the cold water storage tank 9 enters the second heat exchanger 6 through a pipeline and cools the second heat exchanger 6.
Furthermore, the side wall of the cold water storage tank 9 is communicated with a lithium bromide unit 8 through a pipeline, and the lithium bromide unit 8 is used for refrigerating the water in the cold water storage tank 9.
Furthermore, the side wall of the lithium bromide unit 8 is communicated with a heat conduction oil storage tank 10 through a pipeline, and the heat conduction oil storage tank 10 is used for driving the lithium bromide unit 8 and refrigerating water.
Furthermore, the side wall of the heat conducting oil storage tank 10 is communicated with a solar heat collecting system 11 through a pipeline, and the solar heat collecting system 11 is used for heating the heat conducting oil in the heat conducting oil storage tank 10.
Furthermore, a fourth fluid pump 15 is installed on a pipeline communicated between the first heat exchanger 2 and the heat conduction oil storage tank 10, a second fluid pump 13 is installed on a pipeline communicated between the second heat exchanger 6 and the cold water storage tank 9, a third fluid pump 14 is installed on a pipeline communicated between the lithium bromide unit 8 and the cold water storage tank 9, a fifth fluid pump 16 is installed on a pipeline communicated between the lithium bromide unit 8 and the heat conduction oil storage tank 10, and a sixth fluid pump 17 is installed on a pipeline communicated between the heat conduction oil storage tank 10 and the solar heat collection system 11.
Specifically, the sixth fluid pump 17 conveys low-temperature heat conduction oil to the ground solar heat collector system 11, the heat collection system collects the heat of the solar energy and transfers the heat to the heat conduction oil, and then the heat conduction oil in the heat conduction oil storage tank 10 is heated to 200-280 ℃, so that the effects of solar energy storage and heat storage are achieved; meanwhile, the fifth fluid pump 16 sends high-temperature heat conduction oil into the lithium bromide unit 8, the lithium bromide unit 8 can generate cold water at 5 ℃, and the generated cold water is stored in the cold water storage tank 9, so that solar heat energy is converted into cold energy for carbon dioxide compression and cooling.
The lithium bromide absorption type water chilling unit 8 is a lithium bromide absorption type water chilling unit, and in the system, high-temperature heat conduction oil is used as a driving heat source, a lithium bromide solution is used as an absorbent, water is used as a refrigerant, and cold water is prepared at the same time.
The solar heat collecting system 11 includes, but is not limited to, trough, tower, fresnel, and butterfly solar collectors.
It should be noted that, some pipes in the system are provided with corresponding valves which are all arranged conventionally, and when circulation is needed, the valves are opened, and when circulation is not needed, the valves are closed.
Further, a buffer tank 4 is installed on a pipeline communicating between the carbon dioxide turbine generator 3 and the compressor 5.
Further, a first fluid pump 12 is installed on a pipeline communicated between the carbon dioxide storage tank 1 and the first heat exchanger 2.
The utility model provides a carbon dioxide energy storage and power generation system working process as follows:
firstly, in daytime, the sixth fluid pump 17 conveys low-temperature heat conduction oil to the ground solar heat collector system 11, the heat collection system collects the heat of the solar energy and transfers the heat to the heat conduction oil, and then the heat conduction oil in the heat conduction oil storage tank 10 is heated to 200-280 ℃, so that the effect of solar energy storage and heat storage is achieved; meanwhile, the fifth fluid pump 16 sends high-temperature heat conduction oil into the lithium bromide unit 8, the lithium bromide unit 8 can generate cold water at 5 ℃, and the generated cold water is stored by the cold water storage tank 9, so that solar heat energy is converted into cold energy for carbon dioxide compression and cooling; then, when the carbon dioxide power generation system is required to generate power or power grid peak regulation, the first fluid pump 12 conveys the carbon dioxide liquid into the first heat exchanger 2 to perform vaporization volume expansion (the heat conduction oil in the heat conduction oil storage tank 10 provides heat energy), and the high-pressure carbon dioxide gas enters the carbon dioxide turbine generator set 3 to generate power; the carbon dioxide gas after volume expansion enters the buffer tank 4, the compressor 5 compresses the carbon dioxide in the buffer tank 4 into high-pressure carbon dioxide, the high-pressure carbon dioxide gas becomes high-temperature carbon dioxide liquid (cold water in the cold water storage tank 9 provides cold energy) after heat exchange through the second heat exchanger 6, the high-temperature carbon dioxide liquid becomes low-temperature carbon dioxide liquid after flash evaporation expansion through the flash tank 7, and the low-temperature carbon dioxide liquid returns to the carbon dioxide storage tank again.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present disclosure.
Claims (9)
1. The carbon dioxide energy storage and power generation system is characterized by comprising a low-temperature carbon dioxide storage tank (1), a first heat exchanger (2), a carbon dioxide turbine generator (3), a compressor (5), a second heat exchanger (6) and a flash tank (7), wherein the carbon dioxide storage tank (1), the first heat exchanger (2), the carbon dioxide turbine generator (3), the compressor (5), the second heat exchanger (6) and the flash tank (7) are sequentially communicated through pipelines, and the flash tank (7) is communicated with the low-temperature carbon dioxide storage tank (1) through the pipelines.
2. The carbon dioxide energy storage and power generation system according to claim 1, wherein the side wall of the first heat exchanger (2) is communicated with a heat conduction oil storage tank (10) through a pipeline, and the heat conduction oil storage tank (10) is used for heating the first heat exchanger (2).
3. The carbon dioxide energy storage and power generation system according to claim 1, wherein the side wall of the second heat exchanger (6) is communicated with a cold water storage tank (9) through a pipeline, and the cold water storage tank (9) is used for cooling the second heat exchanger (6).
4. The carbon dioxide energy storage and power generation system as claimed in claim 3, characterized in that the side wall of the cold water storage tank (9) is connected with a lithium bromide unit (8) through a pipeline, and the lithium bromide unit (8) is used for refrigerating water in the cold water storage tank (9).
5. The carbon dioxide energy storage and power generation system according to claim 4, wherein the side wall of the lithium bromide unit (8) is communicated with a heat conduction oil storage tank (10) through a pipeline, and the heat conduction oil storage tank (10) is used for driving the lithium bromide unit (8) and refrigerating water.
6. The carbon dioxide energy storage and power generation system as claimed in claim 5, wherein the side wall of the heat conducting oil storage tank (10) is communicated with a solar heat collection system (11) through a pipeline, and the solar heat collection system (11) is used for heating the heat conducting oil in the heat conducting oil storage tank (10).
7. The carbon dioxide energy storage and power generation system as claimed in claim 6, wherein a fourth fluid pump (15) is installed on a pipeline communicated between the first heat exchanger (2) and the heat conduction oil storage tank (10), a second fluid pump (13) is installed on a pipeline communicated between the second heat exchanger (6) and the cold water storage tank (9), a third fluid pump (14) is installed on a pipeline communicated between the lithium bromide unit (8) and the cold water storage tank (9), a fifth fluid pump (16) is installed on a pipeline communicated between the lithium bromide unit (8) and the heat conduction oil storage tank (10), and a sixth fluid pump (17) is installed on a pipeline communicated between the heat conduction oil storage tank (10) and the solar heat collection system (11).
8. The carbon dioxide energy storage and power generation system according to claim 1, wherein a buffer tank (4) is further installed on a pipeline communicating between the carbon dioxide turbine generator (3) and the compressor (5).
9. Carbon dioxide energy storage and power generation system according to claim 1, characterized in that a first fluid pump (12) is mounted on the conduit communicating between the carbon dioxide storage tank (1) and the first heat exchanger (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222013964.2U CN218093316U (en) | 2022-08-01 | 2022-08-01 | Carbon dioxide energy storage and power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222013964.2U CN218093316U (en) | 2022-08-01 | 2022-08-01 | Carbon dioxide energy storage and power generation system |
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| Publication Number | Publication Date |
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| CN218093316U true CN218093316U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222013964.2U Active CN218093316U (en) | 2022-08-01 | 2022-08-01 | Carbon dioxide energy storage and power generation system |
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| CN (1) | CN218093316U (en) |
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- 2022-08-01 CN CN202222013964.2U patent/CN218093316U/en active Active
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