CN210087560U - Solar photo-thermal power generation system based on methane reforming energy storage - Google Patents
Solar photo-thermal power generation system based on methane reforming energy storage Download PDFInfo
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- CN210087560U CN210087560U CN201920490928.0U CN201920490928U CN210087560U CN 210087560 U CN210087560 U CN 210087560U CN 201920490928 U CN201920490928 U CN 201920490928U CN 210087560 U CN210087560 U CN 210087560U
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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
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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- Y02P20/133—Renewable energy sources, e.g. sunlight
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Abstract
The utility model discloses a solar photo-thermal power generation system based on methane reforming energy storage, which comprises a heat collector, wherein the outlet of the heat collector is communicated with the hot side inlet of a heat exchanger 4, the hot side outlet of the heat exchanger is communicated with the inlet of a heat exchanger loop compressor, and the outlet of the heat exchange loop compressor is communicated with the inlet of the heat collector; the outlet of the heat collector is communicated with the shell pass inlet of the methane reforming endothermic reactor, and the shell pass outlet of the methane reforming endothermic reactor is communicated with the inlet of the heat exchanger loop compressor; the solar energy heat collector is characterized in that a mirror field used for focusing sunlight on the heat collector is arranged at a position corresponding to the heat collector, the system can realize organic combination of methane reforming energy storage and solar photo-thermal power generation, and can realize stable and continuous utilization of solar energy by combining the methane reforming energy storage and the solar photo-thermal power generation.
Description
Technical Field
The utility model relates to a solar energy utilizes technical field, in particular to solar photothermal power system based on methane reforming energy storage.
Background
Solar energy has characteristics such as clean, inexhaustible, but has the time maldistribution problem, and solar energy all needs to use technologies such as energy storage when being used for generating electricity.
Thermochemical energy storage is mainly based on a reversible thermochemical reaction, realizes storage and release of energy through the fracture recombination of chemical bond, and in the energy storage reaction, the energy storage material absorbs the heat and decomposes into two kinds of substances and stores alone, and when the energy supply needs, two kinds of substances fully contact and take place the reaction, turn into heat energy and release the chemical energy of storing. The thermochemical energy storage density and efficiency are high, and the device is suitable for high-temperature high-density storage of solar energy heat energy. The volume and the weight energy storage density of the thermochemical energy storage are far higher than those of sensible heat or phase change heat storage, the energy storage carrier can be stored for a long time at normal temperature, high-grade heat energy can be usually obtained through the thermochemical energy storage, and most thermochemical energy storage carriers are safe, non-toxic, low in price and convenient to process. Among them, methane reforming is a common thermochemical energy storage system, and has high energy storage density and rich raw material sources.
In northwest areas of China, solar energy resources are abundant, so if a new system can be developed, the system can organically combine methane reforming thermochemical energy storage with solar photo-thermal power generation, and great changes can be brought to solar photo-thermal power generation.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a solar photothermal power system based on methane reforming energy storage combines together methane reforming energy storage and solar photothermal power, can realize carrying out steady continuous utilization to solar energy.
In order to realize the purpose, the utility model discloses a technical scheme is:
a solar photo-thermal power generation system based on methane reforming energy storage comprises a heat collector 2, wherein an outlet of the heat collector 2 is communicated with a hot side inlet of a heat exchanger 4, a hot side outlet of the heat exchanger 4 is communicated with an inlet of a heat exchanger loop compressor 5, and an outlet of the heat exchanger loop compressor 5 is communicated with an inlet of the heat collector 2;
the outlet of the heat collector 2 is communicated with the shell pass inlet of the methane reforming endothermic reactor 7, and the shell pass outlet of the methane reforming endothermic reactor 7 is communicated with the inlet of the heat exchanger loop compressor 5;
the collector 2 is provided with a mirror field 1 corresponding to the position for focusing sunlight on the collector 2.
The tube pass outlet of the methane reforming endothermic reactor 7 is communicated with the inlet of a carbon monoxide and hydrogen storage tank 9, the outlet of the carbon monoxide and hydrogen storage tank 9 is communicated with the inlet of an energy release working medium compressor 11, the outlet of the energy release working medium compressor 11 is communicated with the tube pass inlet of a methane synthesis exothermic reactor 13, the tube pass outlet of the methane synthesis exothermic reactor 13 is communicated with the inlet of a methane and carbon dioxide storage tank 14, the outlet of the methane and carbon dioxide storage tank 14 is communicated with the inlet of an energy storage working medium compressor 16, and the outlet of the energy storage working medium compressor 16 is communicated with the tube pass inlet of the methane reforming endothermic reactor 7.
An inlet valve 10 and an outlet valve 12 of the energy releasing working medium compressor are respectively arranged at the inlet and the outlet of the energy releasing working medium compressor 11, and an inlet valve 15 and an outlet valve 17 of the energy storing working medium compressor are respectively arranged at the inlet and the outlet of the energy storing working medium compressor 16.
The shell-side outlet of the methane synthesis exothermic reactor 13 is communicated with the hot-side inlet of the heat exchanger 4, the hot-side outlet of the heat exchanger 4 is communicated with the inlet of the energy release loop compressor 20, and the outlet of the energy release loop compressor 20 is communicated with the shell-side inlet of the methane synthesis exothermic reactor 13.
An energy release loop outlet valve 18 is arranged between the shell pass outlet of the methane synthesis exothermic reactor 13 and the hot side inlet of the heat exchanger 4, and an energy release loop inlet valve 19 is arranged between the outlet of the energy release loop compressor 20 and the shell pass inlet of the methane synthesis exothermic reactor 13.
The outlet of the cold side of the heat exchanger 4 is communicated with the inlet of the power generation system 21, and the outlet of the power generation system 21 is communicated with the inlet of the cold side of the heat exchanger 4.
And a heat exchange loop valve 3 is arranged between the outlet of the heat collector 2 and the hot side inlet of the heat exchanger 4.
An energy storage loop inlet valve 6 is arranged between the heat exchange loop valve 3 and the shell pass inlet of the methane reforming endothermic reactor 7, and an energy storage loop outlet valve 8 is arranged between the shell pass outlet of the methane reforming endothermic reactor 7 and the inlet of the heat exchanger loop compressor 5.
The methane reforming endothermic reactor 7 and the methane synthesis exothermic reactor 13 are both shell-and-tube type.
A solar photo-thermal power generation method based on methane reforming energy storage comprises the following steps:
when solar radiation is sufficient, the heat exchange loop valve 3, the energy storage loop inlet valve 6, the energy storage loop outlet valve 8, the energy storage working medium compressor inlet valve 15 and the energy storage working medium compressor outlet valve 17 are opened, the energy release working medium compressor inlet valve 10, the energy release working medium compressor outlet valve 12, the energy release loop outlet valve 18 and the energy release loop inlet valve 19 are closed, heat transfer working media heated by the heat collector 2 enter the hot side of the heat exchanger 4, and after exchanging heat with power generation working media of the power generation system 21, the heat transfer working media enter the heat exchanger loop compressor 5 and enter the heat collector 2 after being pressurized, and circulation is completed. The method comprises the steps that a power generation working medium absorbs heat at the cold side of a heat exchanger 4 and then enters a power generation system 21, the power generation working medium returns to the cold side of the heat exchanger 4 after acting to continuously absorb heat to complete circulation, a part of heat transfer working medium enters the shell side of a methane reforming endothermic reactor 7 through an energy storage loop inlet valve 6, methane and carbon dioxide in a methane and carbon dioxide storage tank 14 are pressurized by an energy storage working medium compressor 16 and then enter the tube side of the methane reforming endothermic reactor 7, the methane and carbon dioxide undergo a reforming reaction in the tube side to absorb heat of the heat transfer working medium to generate carbon monoxide and hydrogen which enter a carbon monoxide and hydrogen storage tank 9, the heat transfer working medium after heat exchange enters a heat exchanger loop compressor 5 through an energy storage loop outlet valve;
when solar radiation does not exist, the heat exchange loop valve 3, the energy storage loop inlet valve 6, the energy storage loop outlet valve 8, the energy storage working medium compressor inlet valve 15 and the energy storage working medium compressor outlet valve 17 are closed, the energy release working medium compressor inlet valve 10, the energy release working medium compressor outlet valve 12, the energy release loop outlet valve 18 and the energy release loop inlet valve 19 are opened, carbon monoxide and hydrogen in the carbon monoxide and hydrogen storage tank 9 enter a tube pass of the methane synthesis and release reactor 13 after being pressurized by the energy release working medium compressor 11, the carbon monoxide and the hydrogen react to generate methane and carbon dioxide, release heat, enter the methane and carbon dioxide storage tank 14 after exchanging heat with the heat transfer working medium of the shell pass, the heat transfer working medium of the shell pass enters the hot side inlet of the heat exchanger 4 after being heated by the energy release loop outlet valve, and enters the energy release loop compressor 20 after exchanging heat with the power generation working, the pressurized working medium enters the methane synthesis and heat release reactor 13 to continuously absorb heat to complete the circulation, the power generation working medium enters the power generation system 21 after absorbing heat on the cold side of the heat exchanger 4, and returns to the cold side of the heat exchanger 4 to continuously absorb heat after acting, so that the circulation is completed.
The utility model has the advantages that:
solar photothermal power system based on methane reforming energy storage at concrete during operation, utilize solar energy to heat the heat transfer working medium through the heat collector to send into methane reforming endothermic reactor shell side with partly heat transfer working medium, take place the reforming reaction after methane and the carbon dioxide endotherm in the tube side, absorbed the heat. When solar radiation is insufficient, carbon monoxide and hydrogen are sent to a methane synthesis exothermic reactor tube pass to react and release heat, so that organic combination of methane reforming energy storage and solar photo-thermal power generation is realized.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Wherein, 1 is a mirror field, 2 is a heat collector, 3 is a heat exchange loop valve, 4 is a heat exchanger, 5 is a heat exchanger loop compressor, 6 is an energy storage loop inlet valve, 7 is a methane reforming endothermic reactor, 8 is an energy storage loop outlet valve, 9 is a carbon monoxide and hydrogen storage tank, 10 is an energy release working medium compressor inlet valve, 11 is an energy release working medium compressor, 12 is an energy release working medium compressor outlet valve, 13 is a methane synthesis exothermic reactor, 14 is a methane and carbon dioxide storage tank, 15 is an energy storage working medium compressor inlet valve, 16 is an energy storage working medium compressor, 17 is an energy storage working medium compressor outlet valve, 18 is an energy release loop outlet valve, 19 is an energy release loop inlet valve, 20 is an energy release loop compressor, and 21 is a power generation system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the solar photo-thermal power generation system based on methane reforming energy storage, including heat collector 2, heat exchanger 4, methane reforming endothermic reactor 7, carbon monoxide and hydrogen storage tank 9, methane synthesis exothermic reactor 13, methane and carbon dioxide storage tank 14, power generation system 21, heat exchanger loop compressor 5, energy release working medium compressor 11, energy storage working medium compressor 16, energy release loop compressor 20. The outlet of the heat collector 2 is communicated with the inlet of the hot side of the heat exchanger 4, the outlet of the hot side of the heat exchanger 4 is communicated with the inlet of the heat exchanger loop compressor 5, and the outlet of the heat exchanger loop compressor 5 is communicated with the inlet of the heat collector 2.
The outlet of the heat collector 2 is communicated with the shell pass inlet of the methane reforming endothermic reactor 7, and the shell pass outlet of the methane reforming endothermic reactor 7 is communicated with the inlet of the heat exchanger loop compressor 5. The tube pass outlet of the methane reforming endothermic reactor 7 is communicated with the inlet of a carbon monoxide and hydrogen storage tank 9, the outlet of the carbon monoxide and hydrogen storage tank 9 is communicated with the inlet of an energy release working medium compressor 11, the outlet of the energy release working medium compressor 11 is communicated with the tube pass inlet of a methane synthesis exothermic reactor 13, the tube pass outlet of the methane synthesis exothermic reactor 13 is communicated with the inlet of a methane and carbon dioxide storage tank 14, the outlet of the methane and carbon dioxide storage tank 14 is communicated with the inlet of an energy storage working medium compressor 16, and the outlet of the energy storage working medium compressor 16 is communicated with the tube pass inlet of the methane reforming endothermic reactor 7. The shell-side outlet of the methane synthesis exothermic reactor 13 is communicated with the hot-side inlet of the heat exchanger 4, the hot-side outlet of the heat exchanger 4 is communicated with the inlet of the energy release loop compressor 20, and the outlet of the energy release loop compressor 20 is communicated with the shell-side inlet of the methane synthesis exothermic reactor 13.
The outlet of the cold side of the heat exchanger 4 is communicated with the inlet of the power generation system 21, and the outlet of the power generation system 21 is communicated with the inlet of the cold side of the heat exchanger 4.
As the utility model discloses a preferred embodiment, the utility model discloses still include heat transfer loop valve 3, energy storage circuit inlet valve 6, energy storage circuit outlet valve 8, release can working medium compressor inlet valve 10, release can working medium compressor outlet valve 12, energy storage working medium compressor inlet valve 15, energy storage working medium compressor outlet valve 17, release can return circuit outlet valve 18 and release can return circuit inlet valve 19.
Preferably, the power generation system 21 may be a steam rankine cycle power generation system, an organic rankine cycle power generation system, or a supercritical carbon dioxide brayton cycle power generation system.
The mirror field 1 collects sunlight onto the heat collector 2, heat transfer working media heated by the heat collector 2 enter the hot side of the heat exchanger 4 to exchange heat with power generation working media of the power generation system 21, the heat transfer working media enter the heat exchanger loop compressor 5, and enter the heat collector 2 after pressurization to complete circulation. The power generation working medium absorbs heat at the cold side of the heat exchanger 4, enters the power generation system 21, returns to the cold side of the heat exchanger 4 after acting, and continuously absorbs heat to complete circulation.
When the solar radiation is sufficient, the inlet valve 6 of the energy storage loop, the outlet valve 8 of the energy storage loop, the inlet valve 15 of the energy storage working medium compressor and the outlet valve 17 of the energy storage working medium compressor are opened, and the inlet valve 10 of the energy release working medium compressor, the outlet valve 12 of the energy release working medium compressor, the outlet valve 18 of the energy release loop and the inlet valve 19 of the energy release loop are closed. A part of the heat transfer working medium heated by the heat collector 2 enters the shell pass of the methane reforming endothermic reactor 7 through the inlet valve 6 of the energy storage loop, methane and carbon dioxide in the methane and carbon dioxide storage tank 14 enter the tube pass of the methane reforming endothermic reactor 7 after being pressurized by the energy storage working medium compressor 16, and the methane and carbon dioxide undergo a reforming reaction in the tube pass to absorb the heat of the heat transfer working medium to generate carbon monoxide and hydrogen which enter the carbon monoxide and hydrogen storage tank 9. The heat transfer working medium after heat exchange enters the heat exchanger loop compressor 5 through the outlet valve 8 of the energy storage loop, and returns to the heat collector after being pressurized to continuously absorb heat.
When no solar radiation exists, the heat exchange loop valve 3, the energy storage loop inlet valve 6, the energy storage loop outlet valve 8, the energy storage working medium compressor inlet valve 15 and the energy storage working medium compressor outlet valve 17 are closed, and the energy release working medium compressor inlet valve 10, the energy release working medium compressor outlet valve 12, the energy release loop outlet valve 18 and the energy release loop inlet valve 19 are opened. Carbon monoxide and hydrogen in the carbon monoxide and hydrogen storage tank 9 enter a tube pass of the methane synthesis exothermic reactor 13 after being pressurized by the energy release working medium compressor 11, the carbon monoxide and the hydrogen react to generate methane and carbon dioxide, release heat, and enter the methane and carbon dioxide storage tank 14 after exchanging heat with the heat transfer working medium of the shell pass, the heat transfer working medium of the shell pass enters a hot side inlet of the heat exchanger 4 through the outlet valve of the energy release loop after being heated, and enters the energy release loop compressor 20 after exchanging heat with the power generation working medium of the power generation system 21, and enters the methane synthesis exothermic reactor 13 after being pressurized to continuously absorb heat, thereby completing the circulation. The power generation working medium absorbs heat at the cold side of the heat exchanger 4, enters the power generation system 21, returns to the cold side of the heat exchanger 4 after acting, and continuously absorbs heat to complete circulation.
It should be noted that the above embodiments are only intended to illustrate the technical idea and features of the present invention, and that the specific implementation methods, such as the type of the heat exchanger loop compressor 5, the type of the power generation system 21, etc., can be modified and improved without departing from the scope and the basic spirit of the present invention as defined in the claims.
Claims (9)
1. The solar photo-thermal power generation system based on methane reforming energy storage is characterized by comprising a heat collector (2), wherein an outlet of the heat collector (2) is communicated with a hot side inlet of a heat exchanger (4), a hot side outlet of the heat exchanger (4) is communicated with an inlet of a heat exchanger loop compressor (5), and an outlet of the heat exchanger loop compressor (5) is communicated with an inlet of the heat collector (2);
an outlet of the heat collector (2) is communicated with a shell pass inlet of the methane reforming endothermic reactor (7), and a shell pass outlet of the methane reforming endothermic reactor (7) is communicated with an inlet of the heat exchanger loop compressor (5);
a mirror field (1) used for focusing sunlight on the heat collector (2) is arranged at the corresponding position of the heat collector (2).
2. The solar photothermal power system based on methane reforming energy storage is characterized in that a tube side outlet of the methane reforming endothermic reactor (7) is communicated with an inlet of a carbon monoxide and hydrogen storage tank (9), an outlet of the carbon monoxide and hydrogen storage tank (9) is communicated with an inlet of an energy release working medium compressor (11), an outlet of the energy release working medium compressor (11) is communicated with a tube side inlet of a methane synthesis exothermic reactor (13), a tube side outlet of the methane synthesis exothermic reactor (13) is communicated with an inlet of a methane and carbon dioxide storage tank (14), an outlet of the methane and carbon dioxide storage tank (14) is communicated with an inlet of an energy storage working medium compressor (16), and an outlet of the energy storage working medium compressor (16) is communicated with a tube side inlet of the methane reforming endothermic reactor (7).
3. The solar photo-thermal power generation system based on methane reforming energy storage is characterized in that an inlet and an outlet of the energy releasing working medium compressor (11) are respectively provided with an inlet valve (10) of the energy releasing working medium compressor and an outlet valve (12) of the energy releasing working medium compressor, and an inlet and an outlet of the energy storing working medium compressor (16) are respectively provided with an inlet valve (15) of the energy storing working medium compressor and an outlet valve (17) of the energy storing working medium compressor.
4. The solar photo-thermal power generation system based on methane reforming energy storage is characterized in that a shell side outlet of the methane synthesis exothermic reactor (13) is communicated with a hot side inlet of the heat exchanger (4), a hot side outlet of the heat exchanger (4) is communicated with an inlet of the energy release loop compressor (20), and an outlet of the energy release loop compressor (20) is communicated with the shell side inlet of the methane synthesis exothermic reactor (13).
5. The solar photo-thermal power generation system based on methane reforming energy storage is characterized in that an energy release loop outlet valve (18) is arranged between the shell side outlet of the methane synthesis exothermic reactor (13) and the hot side inlet of the heat exchanger (4), and an energy release loop inlet valve (19) is arranged between the outlet of the energy release loop compressor (20) and the shell side inlet of the methane synthesis exothermic reactor (13).
6. The solar photo-thermal power generation system based on methane reforming energy storage as claimed in claim 2, characterized in that the methane reforming endothermic reactor (7) and the methane synthesis exothermic reactor (13) are both shell-and-tube type.
7. The solar photo-thermal power generation system based on methane reforming energy storage is characterized in that a cold side outlet of the heat exchanger (4) is communicated with an inlet of a power generation system (21), and an outlet of the power generation system (21) is communicated with a cold side inlet of the heat exchanger (4).
8. The solar photo-thermal power generation system based on methane reforming energy storage is characterized in that a heat exchange loop valve (3) is arranged between the outlet of the heat collector (2) and the hot side inlet of the heat exchanger (4).
9. The solar photo-thermal power generation system based on methane reforming energy storage is characterized in that an energy storage loop inlet valve (6) is arranged between the heat exchange loop valve (3) and the shell-side inlet of the methane reforming endothermic reactor (7), and an energy storage loop outlet valve (8) is arranged between the shell-side outlet of the methane reforming endothermic reactor (7) and the inlet of the heat exchanger loop compressor (5).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944756A (en) * | 2019-04-12 | 2019-06-28 | 西安热工研究院有限公司 | A kind of solar light-heat power-generation system and method based on methane reforming energy storage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944756A (en) * | 2019-04-12 | 2019-06-28 | 西安热工研究院有限公司 | A kind of solar light-heat power-generation system and method based on methane reforming energy storage |
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