CN214880199U - Solar ammonia decomposition hydrogen production system - Google Patents
Solar ammonia decomposition hydrogen production system Download PDFInfo
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- CN214880199U CN214880199U CN202121173079.XU CN202121173079U CN214880199U CN 214880199 U CN214880199 U CN 214880199U CN 202121173079 U CN202121173079 U CN 202121173079U CN 214880199 U CN214880199 U CN 214880199U
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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
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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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
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Abstract
The utility model discloses a solar ammonia decomposition hydrogen production system, which belongs to the technical field of ammonia decomposition hydrogen production and comprises a solar heat absorption system, a fused salt type heat storage system, an ammonia reaction generation system and a fused salt storage system; the solar heat absorption system, the molten salt type heat storage system and the ammonia reaction generation system are sequentially connected through a hot salt pipeline, and the ammonia reaction generation system, the molten salt storage system and the solar heat absorption system are connected through a cold salt pipeline. The utility model discloses change solar energy into heat energy, heat the fused salt, then give the heat transfer of fused salt and make ammonia decompose hydrogen manufacturing for the ammonia, the utility model discloses a heat-retaining system can maintain the system and carry out 24 hours steady operation, is favorable to the high-efficient utilization of solar energy, with the help of the cyclic utilization of fused salt, can significantly reduce the material loss efficiency of operation in-process for economic cost is lower than current electrolysis water hydrogen manufacturing, has more high-efficient simultaneously, to advantages such as environment protection more.
Description
Technical Field
The utility model belongs to the technical field of ammonia decomposition hydrogen manufacturing, concretely relates to solar energy ammonia decomposition hydrogen manufacturing system.
Background
Since the beginning of the industrial revolution, as the development and utilization of traditional fossil energy has progressed to a well-developed stage, large-scale mining and utilization not only causes resource shortage but also causes pollution destruction of the environment. In recent years, the development of hydrogen has been in progress, and the research on hydrogen energy has been paid attention to some extent in all countries around the world. Most of the forms of hydrogen in nature are composed of hydrogen atoms, and hydrogen exists rarely, so that the development and utilization of hydrogen can only be started from hydrogen production to artificially produce hydrogen.
The existing hydrogen production process basically utilizes electrolytic water to produce hydrogen, and is more novel to utilize wind power generation or solar power generation to electrolyze water to produce hydrogen. The problem can be well relieved by the phenomenon of 'wind abandoning and electricity abandoning' in the wind-solar power generation industry, but the hydrogen production by using the electrolyzed water also needs special materials such as electrolyte and the like, and simultaneously suffers from the problem of intermittence of wind power and light heat, the hydrogen production effect cannot reach the best, while the hydrogen production technology by ammonia decomposition can theoretically realize the hydrogen production effect within 24 hours, and through a tower-type fused salt technology, solar energy is stored by using the fused salt and stored in a hot salt tank, and meanwhile, the hot salt tank also adopts a heat preservation technology to keep the temperature of the fused salt in the hot salt tank in a stable state without higher energy loss. The molten salt absorbs heat in the daytime and works, and meanwhile, the excessive hot molten salt is stored in the hot salt tank, and the heat is released again after night.
Utilizing a reversible thermochemical reaction as shown in formula (1):
energy storage by conversion of thermal energy and chemical energy, NH3The system energy storage has the advantages of high density, easy control of reversible reaction, no side reaction, mature technology, reliable application, simple storage and separation and the like, so that the system becomes a preferred thermochemical energy storage substance for solar thermal power generation, the experimental research of utilizing ammonia decomposition reaction as solar energy heat storage power generation has been carried out abroad, the efficiency is more than 0.6, and the system has certain practical prospect.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, the utility model aims to provide a solar energy ammonia decomposition hydrogen production system.
In order to achieve the purpose, the following technical scheme is provided:
a solar ammonia decomposition hydrogen production system comprises a solar heat absorption system, a molten salt type heat storage system, an ammonia reaction generation system and a molten salt storage system; the solar heat absorption system, the molten salt type heat storage system and the ammonia reaction generation system are sequentially connected through a hot salt pipeline, and the ammonia reaction generation system, the molten salt storage system and the solar heat absorption system are connected through a cold salt pipeline.
Further, the ammonia reaction generating system comprises an ammonia decomposition reactor, an ammonia storage tank, a hydrogen storage tank and a nitrogen storage tank, wherein the outlet of the heat salt pump is converged into a pipeline and then is connected with the inlet of the internal channel of the ammonia decomposition reactor, the external channel of the ammonia decomposition reactor is respectively connected with the ammonia storage tank, the hydrogen storage tank and the nitrogen storage tank through gas pipelines, and the outlet of the internal channel of the ammonia decomposition reactor is connected with the molten salt storage system through a cold salt pipeline.
Further, the fused salt storage system include fused salt pre-heater, cold salt jar and cold salt pump, the export of ammonia decomposition reactor's inner channel is connected with the fused salt pre-heater through cold salt pipeline, the fused salt pre-heater is connected with the cold salt jar, then the cold salt jar is connected with the cold salt pump, the cold salt pump passes through the cold salt pipeline and is connected with solar energy heat absorption system.
Furthermore, the solar heat absorption system comprises a heliostat field, a heat absorption pipe and a heat absorption tower, the heliostat field reflects solar energy to the heat absorption pipe, the heat absorption pipe is arranged on the heat absorption tower, the cold salt pump is connected with the heat absorption pipe through a cold salt pipeline, and the heat absorption pipe is connected with the molten salt type heat storage system through a hot salt pipeline.
Further, fused salt formula heat-retaining system includes hot salt jar and hot salt pump, and the heat absorption pipe passes through the hot salt pipeline and is connected with the hot salt jar, and the hot salt jar is connected with the hot salt pump, and the export of hot salt pump is connected with ammonia decomposition reactor.
The utility model discloses a solar energy ammonia decomposition hydrogen manufacturing system, concrete hydrogen manufacturing technology includes following step:
1) the heliostat field reflects sunlight into the heat absorption pipe, molten salt in the heat absorption pipe absorbs heat, and the heated hot molten salt flows into the hot salt tank from the heat absorption pipe along the hot salt pipeline to be stored and insulated;
2) hot molten salt is pumped out from the hot salt tank through a hot salt pump, and the molten salt enters the ammonia decomposition reactor through a hot salt pipeline;
3) the high-temperature molten salt enters an internal channel of the ammonia decomposition reactor through a hot salt pipeline to provide temperature conditions for the ammonia decomposition hydrogen production process;
4) ammonia gas flows into an external channel of the ammonia decomposition reactor from the ammonia storage tank for decomposition to obtain H2And N2Two kinds of gas, subsequently enter into hydrogen holding vessel and nitrogen gas holding vessel respectively in, the fused salt just can fall to cold salt state after the heat transfer, preheat in entering into the fused salt pre-heater through cold salt pipeline, in order to prevent taking place to solidify, enter into the cold salt jar afterwards and store, wait when having sunshine to squeeze into the heat absorption pipe on the heat absorption tower through cold salt pipeline with cold fused salt through cold salt pump again, so circulation is relapse, constantly carry out the heat for ammonia decomposition and provide.
Furthermore, the temperature of the hot molten salt in the hot salt tank is 540-560 ℃, and even the temperature can be higher.
Further, the ammonia gas flows from the ammonia storage tank into the external channel of the ammonia decomposition reactor for decompositionTo obtain H2And N2The two gases are purified by membrane separation and then respectively enter a hydrogen storage tank and a nitrogen storage tank.
Further, the temperature of the molten salt in the cold salt tank (11) is 260 ℃ or higher.
The system mainly uses binary molten salt, which is composed of 60% and 40% NaNO by mass3And KNO3Composition, commonly referred to as solar salt. The salt can resist the temperature of 620 ℃ at most and the actual operation temperature is 260-565 ℃.
The utility model discloses a beneficial achievement is:
1. a solar ammonia decomposition hydrogen production system based on a heat storage type is provided, and the heat storage system can maintain the stable operation of the system for 24 hours due to the intermittent solar energy, so that the efficient utilization of the solar energy is facilitated.
2. The amino system has the advantages of abundant and cheap raw materials, all-weather continuous energy supply, high energy storage density, easy control of reversible reaction, no side reaction, mature technology, reliable application and simple storage and separation.
3. Solar energy ammonia decomposes hydrogen manufacturing system based on heat storage formula with the help of the recycling of fused salt, can significantly reduce the material loss efficiency in the operation process for economic cost is lower than current electrolytic water hydrogen manufacturing, has more high-efficient simultaneously, to the more environmental protection's of environment advantage.
Drawings
FIG. 1 is a process diagram of the system flow of the present invention;
in the figure: 1-a heliostat field; 2-a heat absorption tube; 3-a heat absorption tower; 4-hot salt pipeline; 5-ammonia decomposition reactor; 6-ammonia storage tank, 7-hydrogen storage tank; 8-nitrogen storage tank; 9-gas pipeline; 10-molten salt preheater; 11-cold salt tank; 12-cold salt pump; 13-hot salt tank; 14-hot salt pump; 15-cold salt pipeline.
Detailed Description
The present invention will be further described with reference to the drawings, but the scope of the present invention is not limited thereto.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in FIG. 1, the solar ammonia decomposition hydrogen production system comprises a heliostat field 1, a heat absorption pipe 2, a heat absorption tower 3, a hot salt pipeline 4, an ammonia decomposition reactor 5, an ammonia storage tank 6, a hydrogen storage tank 7, a nitrogen storage tank 8, a gas pipeline 9, a molten salt preheater 10, a cold salt tank 11, a cold salt pump 12, a hot salt tank 13, a hot salt pump 14 and a cold salt pipeline 15, wherein the heliostat field 1 absorbs sunlight to the heat absorption pipe 2, the heat absorption pipe 2 is arranged on the heat absorption tower 3, the heat absorption pipe 2 is connected with the hot salt tank 13 through the hot salt pipeline 4, the hot salt tank 13 is connected with the hot salt pump 14, the outlet of the hot salt pump 14 is connected with the inlet of the ammonia decomposition reactor 5 through the hot salt pipeline 4 and is connected with the inlet of the internal pipeline of the ammonia decomposition reactor 5, the ammonia storage tank 6, the hydrogen storage tank 7 and the nitrogen storage tank 8 are connected with the external pipeline of the ammonia decomposition reactor 5 through the gas pipeline 9, the outlet of the internal pipeline of the ammonia decomposition reactor 5 is connected with the inlet of the molten salt preheater 10 through the cold salt pipeline 15 And then, the outlet of the molten salt preheater 10 is connected with the inlet of the cold salt tank 11, the outlet of the cold salt tank 11 is connected with the cold salt pump 12, and the cold salt pump 12 is connected with the heat absorption pipe 2 through the cold salt pipeline 15 to form a circulation loop.
The utility model discloses a solar energy ammonia decomposes hydrogen manufacturing system, concrete processing method includes following steps, the sunlight shines down from the sky, through the reflection of heliostat field 1, light will reflect to in the heat-absorbing pipe 2, the fused salt in the heat-absorbing pipe 2 will carry out heat absorption work, the fused salt will be promoted to above 560 ℃ from about 260 ℃, the hot molten salt after being heated will flow to hot salt pipeline 4 from heat-absorbing pipe 2, the fused salt in hot salt pipeline 4 will flow into hot salt jar 13 and store the heat preservation, the fused salt temperature will keep about 560 ℃, hot molten salt is extracted from hot salt jar 13, utilize hot salt pump 14 to take out the fused salt from hot salt jar 13, then in utilizing hot salt pipeline 4 to transmit the fused salt to ammonia reaction generating system, the fused salt enters into the internal channel of ammonia decomposition reactor 5 through hot salt pipeline 4, provide the condition for ammonia decomposition hydrogen manufacturing process, then, the ammonia gas flows from the ammonia storage tank 6 into the external passage of the ammonia decomposition reactor 5 to be decomposed, and the reaction proceeds as shown in the formula (2),
to obtain H2And N2Two gases, N produced2And H2Due to the difference in properties, fusion did not occur after production, and N was separated by membrane separation2And H2Screening separation, enter into hydrogen holding vessel 7 and nitrogen gas holding vessel 8 afterwards, the fused salt just can fall to the cold salt state after the heat transfer, preheat in entering into fused salt pre-heater 10 through cold salt pipeline 15, prevent that the fused salt subcooling from taking place to solidify, preheat about 260 ℃, the fused salt stores in entering into the cold salt jar through cold salt pipeline 15 again, the cold salt jar also has the heat preservation function simultaneously for the fused salt can not take place to solidify. When sunlight exists, cold molten salt is pumped into the heat absorption pipes 2 on the heat absorption tower 3 through the cold salt pipelines 15 by the cold salt pump 12, the sunlight is reflected by the heliostat field 1 and then is gathered in the heat absorption pipes 2, the cold molten salt absorbs heat in the heat absorption pipes 2 again, and the temperature is raised to form hot molten salt. The hot molten salt is subjected to subsequent processes through the hot salt pipeline 4, so that the circulation is completed again and again, and heat is continuously provided for ammonia decomposition.
Claims (6)
1. A solar energy ammonia decomposition hydrogen production system is characterized by comprising a solar energy heat absorption system, a molten salt type heat storage system, an ammonia reaction generation system and a molten salt storage system; the solar heat absorption system, the molten salt type heat storage system and the ammonia reaction generation system are sequentially connected through a hot salt pipeline (4), and the ammonia reaction generation system, the molten salt storage system and the solar heat absorption system are connected through a cold salt pipeline (15).
2. The solar energy system for producing hydrogen through ammonia decomposition according to claim 1, wherein the molten salt type heat storage system comprises a hot salt tank (13), a hot salt pump (14) and a hot salt pipeline (4), the hot salt pump (14) and the ammonia decomposition reactor (5) are connected through the hot salt pipeline (4), and an outlet of the hot salt pump (14) is connected with the ammonia reaction generation system after passing through the hot salt pipeline (4).
3. The solar ammonia decomposition hydrogen production system according to claim 2, wherein the ammonia reaction generation system comprises an ammonia decomposition reactor (5), an ammonia storage tank (6), a hydrogen storage tank (7) and a nitrogen storage tank (8), the outlets of the heat salt pumps (14) are converged into a pipeline and then connected with the inlet of the internal channel of the ammonia decomposition reactor (5), the external channel of the ammonia decomposition reactor (5) is respectively connected with the ammonia storage tank (6), the hydrogen storage tank (7) and the nitrogen storage tank (8) through gas pipelines (9), and the outlet of the internal channel of the ammonia decomposition reactor (5) is connected with the molten salt storage system through a cold salt pipeline (15).
4. The solar ammonia decomposition hydrogen production system according to claim 3, wherein the molten salt storage system comprises a molten salt preheater (10), a cold salt tank (11) and a cold salt pump (12), the outlet of the internal channel of the ammonia decomposition reactor (5) is connected with the molten salt preheater (10) through a cold salt pipeline (15), the molten salt preheater (10) is connected with the cold salt tank (11), and the cold salt pump (12) is connected with the solar heat absorption system through the cold salt pipeline (15).
5. The solar ammonia decomposition hydrogen production system according to claim 4, wherein the solar heat absorption system comprises a heliostat field (1), a heat absorption pipe (2) and a heat absorption tower (3), the heliostat field (1) transmits solar energy to the heat absorption pipe (2), the heat absorption pipe (2) is arranged on the heat absorption tower (3), a cold salt pump (12) is connected with the heat absorption pipe (2) through a cold salt pipeline (15), and the heat absorption pipe (2) is connected with the molten salt heat storage system through a hot salt pipeline (4).
6. The solar ammonia decomposition hydrogen production system according to claim 5, wherein the molten salt type heat storage system comprises a hot salt tank (13) and a hot salt pump (14), the heat absorption pipe (2) is connected with the hot salt tank (13) through a hot salt pipeline (4), the hot salt tank (13) is connected with the hot salt pump (14), and an outlet of the hot salt pump (14) is connected with an inlet of the internal channel of the ammonia decomposition reactor (5) through the hot salt pipeline (4).
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| CN202121173079.XU CN214880199U (en) | 2021-05-28 | 2021-05-28 | Solar ammonia decomposition hydrogen production system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113184806A (en) * | 2021-05-28 | 2021-07-30 | 浙江工业大学 | Solar ammonia decomposition hydrogen production system and process method |
| US11697108B2 (en) | 2021-06-11 | 2023-07-11 | Amogy Inc. | Systems and methods for processing ammonia |
| US11724245B2 (en) | 2021-08-13 | 2023-08-15 | Amogy Inc. | Integrated heat exchanger reactors for renewable fuel delivery systems |
| US11764381B2 (en) | 2021-08-17 | 2023-09-19 | Amogy Inc. | Systems and methods for processing hydrogen |
| US11795055B1 (en) | 2022-10-21 | 2023-10-24 | Amogy Inc. | Systems and methods for processing ammonia |
| US11834334B1 (en) | 2022-10-06 | 2023-12-05 | Amogy Inc. | Systems and methods of processing ammonia |
| US11834985B2 (en) | 2021-05-14 | 2023-12-05 | Amogy Inc. | Systems and methods for processing ammonia |
| US11866328B1 (en) | 2022-10-21 | 2024-01-09 | Amogy Inc. | Systems and methods for processing ammonia |
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2021
- 2021-05-28 CN CN202121173079.XU patent/CN214880199U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11834985B2 (en) | 2021-05-14 | 2023-12-05 | Amogy Inc. | Systems and methods for processing ammonia |
| CN113184806A (en) * | 2021-05-28 | 2021-07-30 | 浙江工业大学 | Solar ammonia decomposition hydrogen production system and process method |
| US11697108B2 (en) | 2021-06-11 | 2023-07-11 | Amogy Inc. | Systems and methods for processing ammonia |
| US11724245B2 (en) | 2021-08-13 | 2023-08-15 | Amogy Inc. | Integrated heat exchanger reactors for renewable fuel delivery systems |
| US11764381B2 (en) | 2021-08-17 | 2023-09-19 | Amogy Inc. | Systems and methods for processing hydrogen |
| US11769893B2 (en) | 2021-08-17 | 2023-09-26 | Amogy Inc. | Systems and methods for processing hydrogen |
| US11843149B2 (en) | 2021-08-17 | 2023-12-12 | Amogy Inc. | Systems and methods for processing hydrogen |
| US11834334B1 (en) | 2022-10-06 | 2023-12-05 | Amogy Inc. | Systems and methods of processing ammonia |
| US11840447B1 (en) | 2022-10-06 | 2023-12-12 | Amogy Inc. | Systems and methods of processing ammonia |
| US11912574B1 (en) | 2022-10-06 | 2024-02-27 | Amogy Inc. | Methods for reforming ammonia |
| US11795055B1 (en) | 2022-10-21 | 2023-10-24 | Amogy Inc. | Systems and methods for processing ammonia |
| US11866328B1 (en) | 2022-10-21 | 2024-01-09 | Amogy Inc. | Systems and methods for processing ammonia |
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