CN214581867U - S-CO2 recompression Brayton cycle ammonia based solar energy utilization device - Google Patents
S-CO2 recompression Brayton cycle ammonia based solar energy utilization device Download PDFInfo
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- CN214581867U CN214581867U CN202120265510.7U CN202120265510U CN214581867U CN 214581867 U CN214581867 U CN 214581867U CN 202120265510 U CN202120265510 U CN 202120265510U CN 214581867 U CN214581867 U CN 214581867U
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title description 21
- 229910021529 ammonia Inorganic materials 0.000 title description 10
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 33
- 238000004146 energy storage Methods 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 23
- 230000008901 benefit Effects 0.000 description 5
- 238000010248 power generation Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses an S-CO2 recompression brayton endless amino solar energy utilizes device, including amino solar thermal chemistry energy storage system, supercritical CO2Recompression Brayton cycle system and third heat exchanger, the supercritical CO2The recompression Brayton cycle system and the amino solar thermochemical energy storage system are respectively connected to a third heat exchanger and exchange heat through a third heat exchangerRealizing supercritical CO2And then compressing the heat exchange between the Brayton cycle system and the amino solar thermal chemical energy storage system. The utility model discloses it has simple structure, efficient characteristics, can reduce technique, running cost, promotes the scale globalization and uses, has wide market application space.
Description
Technical Field
The utility model relates to a solar thermal energy chemistry energy storage technical field especially relates to an S-CO2 recompression brayton endless amino solar energy utilizes device.
Background
Solar energy is a clean renewable energy source, and among all renewable energy sources, solar energy is most widely distributed and most easily obtained. Due to the defects of intermittency, low density and instability and difficult continuous supply of solar energy, the wide application of pure solar thermal power generation still needs to be solved, wherein how to realize efficient and large-scale storage of solar energy and guarantee continuous supply of solar energy in one day is the key of the solar thermal power generation technology.
CO2Has the advantages of proper critical parameters, inactive chemical property, good compressibility, safety, no toxicity, rich reserves and the like. S-CO compared to conventional steam power generation2(supercritical CO)2) The generating system has the advantages of smaller volume, lighter weight, smaller heat loss and higher conversion efficiency, the system can start the generator only by using lower heat, can rapidly adjust the load change and support rapid start and stop, and can save a large amount of water resources, so that the generating system is an ideal choice for solar energy thermal energy storage in desert areas with good illumination resources but short water resources.
S-CO2The Brayton cycle requires only an external supply of 500 ℃ to 800 ℃, which is easily achieved using existing solar concentrator and absorber technologyTo the temperature of (c).
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a S-CO2 recompression Brayton endless amino solar energy utilizes device combines solar thermal chemistry energy storage and S-CO2 recompression Brayton endless advantage, realizes the high-efficient utilization of the energy, provides S-CO2 recompression Brayton endless amino solar energy utilizes device.
The technical scheme of the utility model as follows:
the ammonia-based solar energy utilization device of the S-CO2 recompression Brayton cycle is characterized by comprising an amino-based solar thermochemical energy storage system and supercritical CO2Recompression Brayton cycle system and third heat exchanger, the supercritical CO2The recompression Brayton cycle system and the amino solar thermochemical energy storage system are respectively connected to a third heat exchanger, and supercritical CO is realized through the third heat exchanger2And then compressing the heat exchange between the Brayton cycle system and the amino solar thermal chemical energy storage system.
The S-CO2 recompression Brayton cycle amino solar energy utilization device is characterized in that the amino solar thermochemical energy storage system comprises a heliostat field, an amino endothermic reactor, a first heat exchanger, a normal temperature pressure storage tank, a second heat exchanger and an amino adiabatic reactor; the outlet of the endothermic reactor is communicated with the hot end inlet of the first heat exchanger, the inlet of the amino endothermic reactor is communicated with the cold end outlet of the first heat exchanger, the hot end outlet of the first heat exchanger is communicated with the lower end inlet of the normal temperature pressure storage tank, and the lower end outlet of the normal temperature pressure storage tank is communicated with the cold end inlet of the first heat exchanger; the inlet of the heat-insulating reactor is communicated with the cold end outlet of the second heat exchanger, the outlet of the heat-insulating reactor is communicated with the hot end inlet of the third heat exchanger, the hot end outlet of the third heat exchanger is communicated with the hot end inlet of the second heat exchanger, the cold end inlet of the second heat exchanger is communicated with the outlet at the upper end of the normal-temperature pressure storage tank, and the hot end outlet of the second heat exchanger is communicated with the inlet at the upper end of the normal-temperature pressure storage tank.
The S-CO2 recompresses the amino solar energy of Brayton cycleWith a device characterized in that the S-CO2The recompression Brayton cycle system comprises a third heat exchanger, a turbine, a high-temperature heat exchanger, a low-temperature heat exchanger, a main compressor, a secondary compressor and a precooler; the inlet of the turbine is communicated with the outlet of the cold end of the third heat exchanger, the outlet of the turbine is communicated with the inlet of the hot end of the high-temperature heat exchanger, the inlet of the hot end of the low-temperature heat exchanger is communicated with the outlet of the hot end of the high-temperature heat exchanger, the outlet of the cold end of the high-temperature heat exchanger is communicated with the inlet of the cold end of the third heat exchanger, the outlet of the hot end of the low-temperature heat exchanger is divided into two paths, one path is communicated with the inlet of the precooler, the other path is communicated with the inlet of the recompressor, the inlet of the main compressor is communicated with the outlet of the precooler, the outlet of the main compressor is communicated with the inlet of the cold end of the low-temperature heat exchanger, and the inlet of the cold end of the high-temperature heat exchanger is communicated with the outlet of the recompressor and the outlet of the cold end of the low-temperature heat exchanger.
The utility model has the advantages that:
1) the S-CO2 recompression Brayton cycle amino solar energy utilization device has the advantages that the instability of solar energy resources is realized, so that the stable operation of the system can be maintained by the amino solar energy thermochemical heat storage system, the operation of the system at night can be ensured, and the efficient utilization of solar energy is facilitated.
2) The S-CO2 recompression Brayton cycle amino solar energy utilization device is characterized in that carbon dioxide in a supercritical state has a density larger than that of gas and a viscosity smaller than that of liquid, and has the characteristics of strong fluidity, high heat transfer efficiency, small compressibility and the like.
3) The S-CO2 recompression Brayton cycle ammonia-based solar energy utilization device has the characteristics of simple structure and high efficiency, can reduce the technical and operating costs, promotes large-scale global application, and has wide market application space.
Drawings
FIG. 1 is a schematic diagram of the present system;
in the figure: 1-heliostat field, 2-endothermic reactor, 3-first heat exchanger, 4-normal temperature pressure storage tank, 5-second heat exchanger, 6-adiabatic reactor, 7-third heat exchanger, 8-turbine, 9-high temperature heat exchanger, 10-low temperature heat exchanger, 11-main compressor, 12-secondary compressor, 13-precooler.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to FIG. 1, the S-CO2 recompression Brayton cycle ammonia-based solar energy utilization device mainly comprises S-CO2And recompressing the Brayton cycle system and the amino solar thermochemical energy storage system.
The amino solar thermochemical energy storage system comprises a heliostat field 1, an endothermic reactor 2, a first heat exchanger 3, a normal-temperature pressure storage tank 4, a second heat exchanger 5, an adiabatic reactor 6 and a third heat exchanger 7; according to the amino solar thermochemical energy storage system, an outlet of an endothermic reactor 2 is communicated with a hot end inlet of a first heat exchanger 3, an inlet of the endothermic reactor 2 is communicated with a cold end outlet of the first heat exchanger 3, the heliostat field 1 heats ammonia decomposition reaction in the endothermic reactor 2, an inlet of an adiabatic reactor 6 is communicated with a cold end outlet of a second heat exchanger 5, an outlet of the adiabatic reactor 6 is communicated with a hot end inlet of a third heat exchanger 7, a hot end outlet of the third heat exchanger 7 is communicated with a hot end inlet of the second heat exchanger 5, a cold end inlet of the third heat exchanger 7 is communicated with a hot end outlet of a high-temperature heat exchanger 9, and a cold end outlet of the third heat exchanger 7 is communicated with an inlet of a turbine 8. The endothermic reactor 2, the first heat exchanger 3, the normal temperature pressure storage tank 4, the second heat exchanger 5, the adiabatic reactor 6 and the third heat exchanger 7 form a closed cycle.
S-CO2The recompression Brayton cycle system comprises a third heat exchanger 7, a turbine 8, a high-temperature heat exchanger 9, a low-temperature heat exchanger 10, a main compressor 11, a recompressor 12 and a precooler 13; S-CO2Then, the Brayton cycle system is compressed, the inlet of the turbine 8 is communicated with the outlet of the cold end of the third heat exchanger 7, the outlet of the turbine 8 is communicated with the inlet of the hot end of the high-temperature heat exchanger 9, the inlet of the hot end of the low-temperature heat exchanger 10 is communicated with the outlet of the hot end of the high-temperature heat exchanger 9, the outlet of the cold end of the high-temperature heat exchanger 9 is communicated with the inlet of the cold end of the third heat exchanger 7, and S-CO2After absorbing heat and raising temperature from the high-temperature heat exchanger 9, the heat is further absorbed and raised temperature in the third heat exchanger 7, and finally the heat is expanded and does work in the turbine 8. Low temperature heat exchangeThe outlet of the hot end of the device 10 is divided into two paths, one path is communicated with the inlet of the precooler 13, the other path is communicated with the inlet of the recompressor 12, the inlet of the main compressor 11 is communicated with the outlet of the precooler 13, the outlet of the main compressor 11 is communicated with the inlet of the cold end of the low-temperature heat exchanger 10, and the inlet of the cold end of the high-temperature heat exchanger 9 is communicated with the outlet of the recompressor 12 and the outlet of the cold end of the low-temperature heat exchanger 10. The turbine 8, the high temperature heat exchanger 9, the low temperature heat exchanger 10, the main compressor 11, the recompressor 12 and the precooler 13 form a closed cycle.
The utility model discloses a concrete working process does:
an amino solar thermochemical energy storage system, wherein liquid ammonia in a normal-temperature pressure storage tank 4 passes through a first heat exchanger 3 and then enters an endothermic reactor 2 to undergo ammonia decomposition reaction; the endothermic reactor 2 absorbs heat from the solar energy concentrated by the heliostat field 1 and decomposes ammonia into N2And H2，N2And H2The mixture is stored in a normal temperature pressure storage tank 4 through a first heat exchanger 3; n of the normal temperature storage tank 42And H2The ammonia is synthesized from the second heat exchanger 5 to the adiabatic reactor 1, the generated ammonia passes through the third heat exchanger 7, the second heat exchanger 5 to the normal temperature pressure storage tank 4, and the steps are repeated in a circulating way.
S-CO2Then compresses the S-CO of the Brayton cycle system after the expansion of the turbine 8 to do work2Sequentially enters a high-temperature heat exchanger 9 and a low-temperature heat exchanger 10 for heat exchange, and low-temperature and low-pressure S-CO flows out of the low-temperature heat exchanger2One path is firstly sent into a precooler to further release heat, then sent into a main compressor to be heated and pressurized, and finally sent into a low-temperature heat exchanger 10 to absorb heat and be heated, and the other path is directly sent into a secondary compressor 12 to be heated and pressurized, and then is mixed with S-CO in the low-temperature heat exchanger 102The mixed materials are converged together and enter a high-temperature heat exchanger 9 to absorb heat and raise the temperature, then enter a heater 7 to further raise the temperature, and finally enter a turbine 8 to do work through expansion, and the steps are repeated in a circulating way.
The above-mentioned embodiments are further described in detail for the purpose of the present invention, but it should be understood by those skilled in the art that these embodiments are merely illustrative, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
- An amino solar energy utilization device of an S-CO2 recompression Brayton cycle is characterized by comprising an amino solar thermochemical energy storage system and an S-CO2Recompression Brayton cycle system and a third heat exchanger (7), the S-CO2The recompression Brayton cycle system and the amino solar thermochemical energy storage system are respectively connected to a third heat exchanger (7), and S-CO is realized through the third heat exchanger (7)2And then compressing the heat exchange between the Brayton cycle system and the amino solar thermal chemical energy storage system.
- 2. The S-CO2 recompression brayton cycle amino solar energy utilization device according to claim 1, characterized in that the amino solar thermal chemical energy storage system comprises a heliostat field (1), an amino endothermic reactor (2), a first heat exchanger (3), an ambient pressure storage tank (4), a second heat exchanger (5) and an amino adiabatic reactor (6); the outlet of the endothermic reactor (2) is communicated with the hot end inlet of the first heat exchanger (3), the inlet of the amino endothermic reactor (2) is communicated with the cold end outlet of the first heat exchanger (3), the hot end outlet of the first heat exchanger (3) is communicated with the lower end inlet of the normal temperature pressure storage tank (4), and the lower end outlet of the normal temperature pressure storage tank (4) is communicated with the cold end inlet of the first heat exchanger (3); the inlet of the heat-insulating reactor (6) is communicated with the cold-end outlet of the second heat exchanger (5), the outlet of the heat-insulating reactor (6) is communicated with the hot-end inlet of the third heat exchanger (7), the hot-end outlet of the third heat exchanger (7) is communicated with the hot-end inlet of the second heat exchanger (5), the cold-end inlet of the second heat exchanger (5) is communicated with the upper end outlet of the normal-temperature pressure storage tank (4), and the hot-end outlet of the second heat exchanger (5) is communicated with the upper end inlet of the normal-temperature pressure storage tank (4).
- 3. The S-CO2 recompression brayton cycle amino solar power of claim 1With a device characterized in that the S-CO2The recompression Brayton cycle system comprises a third heat exchanger (7), a turbine (8), a high-temperature heat exchanger (9), a low-temperature heat exchanger (10), a main compressor (11), a recompressor (12) and a precooler (13); the inlet of the turbine (8) is communicated with the outlet of the cold end of the third heat exchanger (7), the outlet of the turbine (8) is communicated with the inlet of the hot end of the high-temperature heat exchanger (9), the inlet of the hot end of the low-temperature heat exchanger (10) is communicated with the outlet of the hot end of the high-temperature heat exchanger (9), the outlet of the cold end of the high-temperature heat exchanger (9) is communicated with the inlet of the cold end of the third heat exchanger (7), the outlet of the hot end of the low-temperature heat exchanger (10) is divided into two paths, one path is communicated with the inlet of the precooler (13), the other path is communicated with the inlet of the recompressor (12), the inlet of the main compressor (11) is communicated with the outlet of the precooler (13), the outlet of the main compressor (11) is communicated with the inlet of the cold end of the low-temperature heat exchanger (10), and the inlet of the cold end of the high-temperature heat exchanger (9) is communicated with the outlet of the recompressor (12) and the outlet of the cold end of the low-temperature heat exchanger (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120265510.7U CN214581867U (en) | 2021-01-31 | 2021-01-31 | S-CO2 recompression Brayton cycle ammonia based solar energy utilization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120265510.7U CN214581867U (en) | 2021-01-31 | 2021-01-31 | S-CO2 recompression Brayton cycle ammonia based solar energy utilization device |
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| CN214581867U true CN214581867U (en) | 2021-11-02 |
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| CN202120265510.7U Expired - Fee Related CN214581867U (en) | 2021-01-31 | 2021-01-31 | S-CO2 recompression Brayton cycle ammonia based solar energy utilization device |
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| CN (1) | CN214581867U (en) |
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2021
- 2021-01-31 CN CN202120265510.7U patent/CN214581867U/en not_active Expired - Fee Related
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Granted publication date: 20211102 |