CN212902808U - Thermochemical energy storage and sensible heat energy storage combined energy storage system - Google Patents
Thermochemical energy storage and sensible heat energy storage combined energy storage system Download PDFInfo
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- CN212902808U CN212902808U CN202021942198.2U CN202021942198U CN212902808U CN 212902808 U CN212902808 U CN 212902808U CN 202021942198 U CN202021942198 U CN 202021942198U CN 212902808 U CN212902808 U CN 212902808U
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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
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
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Abstract
The utility model discloses an energy storage system is united with sensible heat energy storage to thermochemical energy storage, this system include heat absorber, industry turbine, compressor and heat radiator, and the gas outlet of heat absorber is linked together with the entry of industry turbine, and the export of industry turbine is linked together with the gas inlet of heat radiator, and the gas outlet of heat radiator is linked together with the entry of compressor, and the export of compressor is linked together with the entry of heat absorber. The solid outlet of the heat absorber is communicated with the solid inlet of the heat radiator, the solid outlet of the heat radiator is communicated with the solid inlet of the heat absorption gas, a high-temperature gas storage tank is arranged between the heat absorption gas outlet and the industrial turbine inlet, a high-temperature storage bin is arranged between the heat absorption gas outlet and the solid inlet of the heat radiator, a low-temperature storage bin is arranged between the solid outlet of the heat radiator and the inlet of the heat absorber, and a cooler is arranged between the gas outlet of the heat radiator and the inlet of the compressor. The utility model discloses combine together thermochemistry energy storage and sensible heat energy storage, realize high-efficient storage and the utilization to heat energy.
Description
Technical Field
The utility model relates to an energy storage technology field, in particular to thermochemical energy storage and sensible heat energy storage combined energy storage system.
Background
Sensible heat energy storage is energy storage realized by the change of the temperature of an energy storage medium, the energy storage medium is heated to increase the temperature of the energy storage medium, so that heat energy is stored in the energy storage medium, the main energy storage medium comprises high-temperature concrete, high-temperature molten salt and the like, and the sensible heat energy storage is an energy storage form which has the highest technical maturity and the most extensive application in the field of solar thermal power generation at present and is the mainstream solar thermal power generation energy storage technology.
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.
The sensible heat energy storage technology is simple, and energy storage density is low, and thermochemical energy storage density is high, but the technique is complicated, consequently, if can develop a new system, combines sensible heat energy storage and thermochemical energy storage, can improve energy storage density greatly, reduces technical complexity.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide an energy storage system is united with thermochemical energy storage and sensible heat energy storage, combines thermochemical energy storage and sensible heat energy storage, and can realize high-efficient storage and utilization of heat energy.
In order to realize the purpose, the utility model discloses a technical scheme is:
a thermochemical energy storage and sensible heat energy storage combined energy storage system comprises a heat absorber 1, wherein a gas outlet of the heat absorber 1 is communicated with an inlet of an industrial turbine 4, an outlet of the industrial turbine 4 is communicated with a gas inlet of a heat radiator 6, and a solid outlet of the heat radiator 6 is communicated with a solid inlet of the heat absorber 1; the solid outlet of the heat absorber 1 is communicated with the solid inlet of the heat radiator 6; the gas outlet of the heat radiator 6 is communicated with the inlet of the compressor 5, and the outlet of the compressor 5 is communicated with the inlet of the heat absorber 1; the industrial turbine 4 drives a compressor 5.
And a high-temperature gas storage tank 3 is arranged between the gas outlet of the heat absorber 1 and the inlet of the industrial turbine 4.
And a high-temperature bin 2 is arranged between the solid outlet of the heat absorber 1 and the solid inlet of the heat radiator 6.
A low-temperature bin 9 is arranged between the solid outlet of the heat radiator 6 and the solid inlet of the heat absorber 1.
A cooler 7 is arranged between the gas outlet of the heat radiator 6 and the inlet of the compressor 5.
And a high-pressure gas storage tank 8 is arranged between the outlet of the compressor 5 and the inlet of the heat absorber 1.
The energy storage method of the thermochemical energy storage and sensible heat combined energy storage system,
nitrogen enters the heat absorber 1 together with calcium hydroxide and heat storage particles, heat is absorbed in the heat absorber 1, the calcium hydroxide is heated and decomposed to generate steam and calcium oxide, the heat storage particles are heated to raise the temperature, the calcium oxide and the heat storage particles enter the high-temperature bin 2, the nitrogen and the steam enter the high-temperature gas storage tank 3, the high-temperature nitrogen and the steam in the high-temperature gas storage tank 3 do work in the industrial turbine 4, the industrial turbine 4 drives the compressor 5 to operate, the nitrogen and the steam after the work do enter the heat radiator 6, the calcium oxide and the heat storage particles in the high-temperature bin 2 enter the heat radiator 6, the steam and the calcium oxide react to generate the calcium hydroxide to release heat, the latent heat is released by the high-temperature heat storage particles, and the calcium hydroxide and the heat storage particles enter the; the nitrogen does not participate in the reaction, and is cooled by a cooler 7 from the upper part of a heat emitter 6, then enters a compressor 5 for compression, and enters a high-pressure gas storage tank 8 for storage after being compressed, the high-pressure nitrogen in the high-pressure gas storage tank 8 carries calcium hydroxide and heat storage particles in a low-temperature storage bin 9 to enter a heat absorber 1, the calcium hydroxide is decomposed by heat absorption, and the heat storage particles heat up by heat absorption to complete circulation.
When the heat input is large, the sum of the heat absorption rate of the heated decomposition of the calcium hydroxide in the heat absorber 1 and the heat absorption rate of the heated temperature rise of the heat storage particles is larger than the sum of the heat release rate of the reaction of the calcium oxide and the water vapor in the heat releaser 6 and the heat release rate of the latent heat released by the heat storage particles, the excessive calcium oxide and the heat storage particles are stored in the high-temperature bin 2, and the excessive water vapor and the nitrogen are stored in the high-temperature gas storage tank 3;
when no heat is input, the nitrogen and the water vapor stored in the high-temperature gas storage tank 3 continuously enter the industrial turbine 4 to do work, the industrial turbine 4 drags the compressor 5 to operate, the nitrogen and the water vapor after doing work enter the heat radiator 6, the calcium oxide and the heat storage particles stored in the high-temperature bin 2 enter the heat radiator 6, the water vapor and the calcium oxide react to generate calcium hydroxide, heat is released, the latent heat is released by the high-temperature heat storage particles, and the calcium hydroxide and the heat storage particles enter the low-temperature bin 9 after the heat is released. The nitrogen does not participate in the reaction, and enters the compressor 5 for compression after being cooled by the cooler 7 from the upper part of the heat emitter 6, and enters the high-pressure gas storage tank 8 for storage after being compressed, because no heat is input, the heat absorber 1 cannot work, the calcium hydroxide and the heat storage particles are stored in the low-temperature storage bin 9, and the high-pressure nitrogen is stored in the high-pressure gas storage tank 8.
The utility model has the advantages that:
thermochemical energy storage and sensible heat energy storage combined energy storage system at concrete during operation, heat calcium hydrate and heat-retaining granule through the heat absorber to the heat-retaining granule of calcium oxide and high temperature that will decompose the formation is stored. When solar radiation is insufficient, the surplus water vapor in the high-temperature gas storage tank, the surplus calcium oxide in the high-temperature storage bin and the heat storage particles are continuously sent into the heat releaser, the water vapor and the calcium oxide carry out chemical combination reaction, and the sensible heat is released by the high-temperature heat storage particles, so that the organic combination of thermochemical energy storage and sensible heat energy storage is realized.
In addition, the energy storage particles are doped in the calcium oxide and the calcium hydroxide, so that the caking of the calcium oxide and the calcium hydroxide can be effectively relieved, and the circulation efficiency of the calcium oxide and the calcium hydroxide is improved.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Wherein, 1 is a heat absorber, 2 is a high-temperature storage bin, 3 is a high-temperature gas storage tank, 4 is an industrial turbine, 5 is a compressor, 6 is a heat radiator, 7 is a cooler, 8 is a high-pressure gas storage tank, and 9 is a low-temperature storage bin.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model relates to a thermochemical energy storage and sensible heat energy storage combined energy storage system, including heat absorber 1, industrial turbine 4, compressor 5 and radiator 6. The gas outlet of the heat absorber 1 is communicated with the inlet of the industrial turbine 4, the outlet of the industrial turbine 4 is communicated with the gas inlet of the heat radiator 6, the gas outlet of the heat radiator 6 is communicated with the inlet of the compressor 5, and the outlet of the compressor 5 is communicated with the inlet of the heat absorber 1.
The solid outlet of the absorber 1 communicates with the solid inlet of the heat spreader 6.
The solid outlet of the heat spreader 6 communicates with the solid inlet of the heat absorber 1.
As the preferred embodiment of the present invention, the present invention further comprises a high temperature gas storage tank 3 disposed between the gas outlet of the heat absorber 1 and the inlet of the industrial turbine 4, a high temperature storage bin 2 disposed between the solid outlet of the heat absorber 1 and the solid inlet of the heat radiator 6, a low temperature storage bin 9 disposed between the solid outlet of the heat radiator 6 and the inlet of the heat absorber 1, a cooler 7 disposed between the gas outlet of the heat radiator 6 and the inlet of the compressor 5, and a high pressure gas storage tank 8 disposed between the outlet of the compressor 5 and the inlet of the heat absorber 1.
Preferably, the heat absorber 1 is in the form of a fluidized bed, operating at a temperature of 600-700 ℃.
Preferably, the heat emitter 6 is in the form of a fluidized bed or moving bed reactor, operating at a temperature of 500-600 ℃.
Preferably, the mass ratio of the calcium hydroxide to the heat storage particles is 1: 1.
Preferably, the heat storage particles are silicon carbide particles.
As shown in figure 1, the energy storage method of the thermochemical energy storage and sensible heat energy storage combined energy storage system of the utility model is that nitrogen carries calcium hydroxide and heat storage particles into a heat absorber 1 to absorb heat in the heat absorber 1, the calcium hydroxide is heated and decomposed to generate steam and calcium oxide, the heat storage particles are heated to raise the temperature, the calcium oxide and the heat storage particles enter the high-temperature bin 2, nitrogen and the steam enter the high-temperature gas storage tank 3, high-temperature nitrogen and the steam in the high-temperature gas storage tank 3 do work in the industrial turbine 4, the industrial turbine 4 drives the compressor 5 to operate, the nitrogen and the steam after doing work enter the heat radiator 6, the calcium oxide and the heat storage particles in the high-temperature bin 2 enter the heat radiator 6, the steam and the calcium oxide react to generate the calcium hydroxide, heat is released, latent heat is released by the high-temperature heat storage particles, and after the heat is released, the calcium hydroxide and the heat storage particles enter the low-. The nitrogen does not participate in the reaction, and is cooled by a cooler 7 from the upper part of a heat emitter 6, then enters a compressor 5 for compression, and enters a high-pressure gas storage tank 8 for storage after being compressed, the high-pressure nitrogen in the high-pressure gas storage tank 8 carries calcium hydroxide and heat storage particles in a low-temperature storage bin 9 to enter a heat absorber 1, the calcium hydroxide is decomposed by heat absorption, and the heat storage particles heat up by heat absorption to complete circulation.
When the heat input is large, the sum of the heat absorption rate of the heated decomposition of the calcium hydroxide in the heat absorber 1 and the heat absorption rate of the heated temperature rise of the heat storage particles is larger than the sum of the heat release rate of the reaction of the calcium oxide and the water vapor in the heat releaser 6 and the heat release rate of the latent heat released by the heat storage particles, the excessive calcium oxide and the heat storage particles are stored in the high-temperature bin 2, and the excessive water vapor and the nitrogen are stored in the high-temperature gas storage tank 3.
When no heat is input, the nitrogen and the water vapor stored in the high-temperature gas storage tank 3 continuously enter the industrial turbine 4 to do work, the industrial turbine 4 drives the compressor 5, the nitrogen and the water vapor after doing work enter the heat radiator 6, the calcium oxide and the heat storage particles stored in the high-temperature bin 2 enter the heat radiator 6, the water vapor and the calcium oxide react to generate calcium hydroxide, heat is released, the latent heat is released by the high-temperature heat storage particles, and the calcium hydroxide and the heat storage particles enter the low-temperature bin 9 after the heat is released. The nitrogen does not participate in the reaction, and enters the compressor 5 for compression after being cooled by the cooler 7 from the upper part of the heat emitter 6, and enters the high-pressure gas storage tank 8 for storage after being compressed, because no heat is input, the heat absorber 1 cannot work, the calcium hydroxide and the heat storage particles are stored in the low-temperature storage bin 9, and the high-pressure nitrogen is stored in the high-pressure gas storage tank 8.
It should be noted that the above-mentioned embodiments are only illustrative of the technical idea and features of the present invention, and the specific implementation methods, such as the types of the heat absorber 1, the industrial turbine 4 and the heat radiator 6, and the operation temperatures of the heat absorber 1 and the heat radiator 6 and the mass ratio of the calcium hydroxide to the heat storage particles, 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 (5)
1. A thermochemical energy storage and sensible heat energy storage combined energy storage system is characterized by comprising a heat absorber (1), wherein a gas outlet of the heat absorber (1) is communicated with an inlet of an industrial turbine (4), an outlet of the industrial turbine (4) is communicated with a gas inlet of a heat radiator (6), a solid outlet of the heat radiator (6) is communicated with a solid inlet of the heat absorber (1), a solid outlet of the heat absorber (1) is communicated with a solid inlet of the heat radiator (6), a gas outlet of the heat radiator (6) is communicated with an inlet of a compressor (5), an outlet of the compressor (5) is communicated with an inlet of the heat absorber (1), and the industrial turbine (4) drags the compressor (5);
and a high-pressure gas storage tank (8) is arranged between the outlet of the compressor (5) and the inlet of the heat absorber (1).
2. A combined thermochemical and sensible energy storage system according to claim 1, characterized in that a high temperature gas storage tank (3) is arranged between the gas outlet of the heat absorber (1) and the inlet of the industrial turbine (4).
3. A thermochemical and sensible energy storage combined energy storage system according to claim 1, characterized in that a high temperature storage bin (2) is arranged between the solid outlet of the heat absorber (1) and the solid inlet of the heat radiator (6).
4. A thermochemical and sensible energy storage combined energy storage system according to claim 1, characterized in that a low temperature storage bin (9) is arranged between the solid outlet of the heat spreader (6) and the solid inlet of the heat absorber (1).
5. A thermochemical and sensible energy storage combined energy storage system according to claim 1, characterized in that a cooler (7) is arranged between the gas outlet of the heat radiator (6) and the inlet of the compressor (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021942198.2U CN212902808U (en) | 2020-09-08 | 2020-09-08 | Thermochemical energy storage and sensible heat energy storage combined energy storage system |
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| CN202021942198.2U CN212902808U (en) | 2020-09-08 | 2020-09-08 | Thermochemical energy storage and sensible heat energy storage combined energy storage system |
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| CN212902808U true CN212902808U (en) | 2021-04-06 |
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