Efficient ammonia hydrogen production system coupled with heat storage device and implementation method of efficient ammonia hydrogen production system

Abstract

The invention relates to an efficient ammonia hydrogen production system coupled with a heat storage device and an implementation method thereof, and the system comprises an ammonia hydrogen production system used for providing hydrogen for a hydrogenation system; the hydrogenation system is connected with the ammonia hydrogen production system and is used for compressing hydrogen and filling the hydrogen to a user; and the refrigerating system is respectively connected with the ammonia hydrogen production system and the hydrogenation system and is used for cooling the hydrogen in the filling process and preventing the hydrogen from overtemperature in the filling process. The hydrogen production cost can be reduced, the system stability and safety are improved, and efficient conversion and storage of energy are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy conversion and utilization, in particular to a high-efficiency ammonia hydrogen production system coupled with a heat storage device and an implementation method thereof. BACKGROUND

[0002] With the increasing demand for clean energy worldwide, hydrogen energy as a clean and efficient secondary energy source has attracted widespread attention in its production technology. Traditional hydrogen production methods, such as hydrogen production from fossil fuels, are mature in technology, but they are accompanied by large amounts of carbon dioxide emissions, which do not meet the concept of sustainable development. Water electrolysis for hydrogen production can achieve zero carbon emissions during the production process and is an important development direction for future hydrogen production.

[0003] However, the existing water electrolysis hydrogen production system generally has the problem of low energy utilization efficiency. On the one hand, the water electrolysis process requires a large amount of electrical energy for water decomposition, and also consumes a lot of electricity in the water preheating stage, increasing the cost of hydrogen production. On the other hand, if the heat generated during the electrolysis process cannot be effectively recovered and utilized, not only will it cause energy waste, but also it may affect the stability and safety of the system due to heat accumulation. In addition, the hydrogen production system and the heat storage link are independent of each other, and the energy cascade utilization cannot be fully realized, which limits the comprehensive performance improvement of the entire system.

[0004] Therefore, it is of great practical significance to develop a hydrogen production system that can effectively improve energy utilization efficiency and realize efficient energy storage and utilization. SUMMARY

[0005] To solve the above problems, the purpose of the present application is to provide a high-efficiency ammonia hydrogen production system coupled with a heat storage device and an implementation method thereof, which can reduce the cost of hydrogen production, improve the stability and safety of the system, and realize efficient energy conversion and storage.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: The high-efficiency ammonia hydrogen production system coupled with a heat storage device according to the present application comprises: An ammonia hydrogen production system for providing hydrogen gas for a hydrogen filling system; A hydrogen filling system connected with the ammonia hydrogen production system for compressing and filling hydrogen gas to users; A refrigeration system connected with the ammonia hydrogen production system and the hydrogen filling system for cooling hydrogen gas during the filling process to prevent hydrogen gas from overheating during filling.

[0007] Preferably, the ammonia hydrogen production system comprises a storage tank, a first heat exchanger, a reactor, a TSA, a PSA, a fan, and a burner. The storage tank stores liquid ammonia raw materials. The first inlet of the first heat exchanger is connected with the outlet of the storage tank, the first outlet of the first heat exchanger is connected with the first inlet of the reactor, and the first outlet of the reactor is connected with the second inlet of the first heat exchanger; The outlet of the burner is connected with the second inlet of the reactor, and the outlet of the fan is connected with the first inlet of the burner; The second outlet of the first heat exchanger is connected with the inlet of the TSA after being connected with the refrigeration system, the inlet of the PSA is connected with the first outlet of the TSA, the second outlet of the TSA and the first outlet of the PSA are respectively connected with the second inlet of the burner, and the second outlet of the PSA is connected with the hydrogenation system.

[0008] Preferably, the hydrogenation system comprises a low-pressure storage tank, a compressor, a high-pressure storage tank and a refueling machine. The inlet of the low-pressure storage tank is connected with the second outlet of the PSA. The inlet of the compressor is connected with the outlet of the low-pressure storage tank, the inlet of the high-pressure storage tank is connected with the outlet of the compressor, and the outlet of the high-pressure storage tank is connected with the refueling machine after being connected with the refrigeration system.

[0009] Preferably, the refrigeration system comprises a heat storage device, a generator, a second heat exchanger, an absorber, a pump, a condenser, a third heat exchanger, a refrigeration machine, a cold storage device and a stop valve. The first inlet of the heat storage device is connected with the second outlet of the first heat exchanger through a connecting pipeline, and the first outlet of the heat storage device is connected with the inlet of the TSA through a connecting pipeline. The first inlet of the generator is connected with the second outlet of the first heat exchanger through a connecting pipeline, the first outlet of the generator is connected with the inlet of the TSA through a connecting pipeline, the second outlet of the generator is connected with the second inlet of the heat storage device through a connecting pipeline, and the second outlet of the heat storage device is connected with the second inlet of the generator through a connecting pipeline. The third outlet of the generator is connected with the first inlet of the second heat exchanger, the first outlet of the second heat exchanger is connected with the first inlet of the absorber, the outlet of the absorber is connected with the inlet of the pump, the outlet of the pump is connected with the second inlet of the second heat exchanger, and the second outlet of the second heat exchanger is connected with the third inlet of the generator. The fourth outlet of the generator is connected with the first inlet of the condenser, the second inlet of the condenser is connected with cooling water, the first outlet of the condenser outputs hot water, the second outlet of the condenser is connected with the first inlet of the third heat exchanger, the first outlet of the third heat exchanger is connected with the first inlet of the cold storage device and the first inlet of the refrigerating machine through connecting pipelines respectively, the first outlet of the cold storage device is connected with the second inlet of the third heat exchanger through a connecting pipeline, the second outlet of the third heat exchanger is connected with the second inlet of the absorber, and the first outlet of the refrigerating machine is connected with the second inlet of the third heat exchanger through a connecting pipeline. The second outlet of the cold storage device is connected with the second inlet of the refrigerating machine through a connecting pipeline, and the second outlet of the refrigerating machine is connected with the second inlet of the cold storage device through a connecting pipeline. The third inlet of the refrigerating machine is connected with the outlet of the high-pressure storage tank, and the third outlet of the refrigerating machine is connected with the inlet of the filling machine. The first inlet of the heat storage device is provided with a first stop valve on the connecting pipeline of the second outlet of the first heat exchanger, the first inlet of the generator is provided with a second stop valve on the connecting pipeline of the second outlet of the first heat exchanger, the first outlet of the heat storage device is provided with a third stop valve on the connecting pipeline of the inlet of the TSA, the first outlet of the generator is provided with a fourth stop valve on the connecting pipeline of the inlet of the TSA, the second outlet of the generator is provided with a fifth stop valve on the connecting pipeline of the second inlet of the heat storage device, the second outlet of the heat storage device is provided with a sixth stop valve on the connecting pipeline of the second inlet of the generator, the first outlet of the third heat exchanger is provided with a seventh stop valve on the connecting pipeline of the first inlet of the cold storage device, the first outlet of the cold storage device is provided with an eighth stop valve on the connecting pipeline of the second inlet of the third heat exchanger, the first outlet of the third heat exchanger is provided with a ninth stop valve on the connecting pipeline of the first inlet of the refrigerating machine, the first outlet of the refrigerating machine is provided with a tenth stop valve on the connecting pipeline of the second inlet of the third heat exchanger, the second outlet of the cold storage device is provided with an eleventh stop valve on the connecting pipeline of the second inlet of the refrigerating machine, and the second outlet of the refrigerating machine is provided with a twelfth stop valve on the connecting pipeline of the second inlet of the cold storage device.

[0010] Preferably, the high-efficiency ammonia hydrogen production system further comprises a waste heat power generation device and a lithium battery device, the waste heat power generation device is connected with the second outlet of the reactor and electrically connected with the lithium battery device, and the lithium battery device is used for storing electric energy and supplying electric energy to the power-consuming equipment of the fan and the compressor.

[0011] The application also provides an implementation method of the high-efficiency ammonia hydrogen production system coupled with the heat storage device, comprising the following steps: When the required cold load of the refrigerator is greater than the rated refrigeration load of the refrigeration system, the second stop valve, the fourth stop valve, the fifth stop valve, the sixth stop valve, the ninth stop valve, the tenth stop valve, the eleventh stop valve and the twelfth stop valve are opened, the first stop valve, the third stop valve, the seventh stop valve and the eighth stop valve are closed, the reaction gas after heat exchange in the first heat exchanger enters the generator through the second stop valve to provide heat for the refrigeration working medium, and then enters the TSA through the fourth stop valve, the hot state heat storage working medium of the heat storage device enters the generator through the sixth stop valve to provide heat for the refrigeration working medium, and then flows back to the heat storage device through the fifth stop valve, the refrigeration working medium of the refrigerator enters the second heat exchanger through the pump to be heated, and then enters the generator, absorbs the heat provided by the reaction gas and the heat storage device, and is separated into two parts, one part is the heavy component working medium, enters the second heat exchanger through the bottom outlet of the generator to preheat the refrigeration working medium, and then enters the absorber to mix with the light component working medium to form the refrigeration working medium, and the other part is the light component working medium, enters the condenser, and the external cooling water absorbs the heat of the light component working medium to liquefy it, the cooling water absorbs heat to be heated to provide hot water to the outside, and the liquefied light component working medium is further cooled in the third heat exchanger, and then enters the refrigerator through the ninth stop valve after pressure reduction and temperature reduction by the throttling valve; the cold storage working medium of the cold storage device enters the refrigerator through the twelfth stop valve; the added hydrogen gas absorbs the cold of the light component working medium and the cold storage working medium to prevent the temperature of the hydrogen gas from rising during the pressure reduction process; the liquid light component working medium of the refrigerator is gasified and enters the third heat exchanger through the tenth stop valve to absorb heat and be heated, and then enters the absorber.

[0012] The implementation method, preferably, further comprises the following steps: When the required cold load of the refrigerator is equal to the rated refrigeration load of the refrigeration system, the refrigeration system executes the equal refrigeration load operation strategy, and on the basis of the high refrigeration load operation strategy, the fifth stop valve, the sixth stop valve, the eleventh stop valve and the twelfth stop valve are closed; at this time, the cold quantity converted from the heat provided by the reaction gas can match the cold load demand of the refrigerator, and the heat storage device and the cold storage device do not participate in work.

[0013] The implementation method, preferably, further comprises the following steps: When the required cold load of the refrigerator is lower than the rated refrigeration load of the refrigeration system, the refrigeration system executes the low refrigeration load operation strategy, and on the basis of the high refrigeration load operation strategy, the first stop valve, the third stop valve, the seventh stop valve and the eighth stop valve are opened, and the fifth stop valve, the sixth stop valve, the eleventh stop valve and the twelfth stop valve are closed, and the heat storage device and the cold storage device reserve heat and cold.

[0014] The present application has the following advantages due to the above technical scheme: Improving energy utilization efficiency: the excess heat generated in the process of electrolyzing water is stored by the heat storage device, and is used to preheat the incoming water or provide heat for other heat-using links when needed, reducing the consumption of external energy, improving the comprehensive utilization efficiency of energy, and reducing the cost of hydrogen production.

[0015] Enhancing system stability and safety: the energy management and control system can monitor and regulate the system operation state in real time, effectively avoiding system failure caused by heat accumulation or other parameter abnormalities, and ensuring stable and safe operation of the system. At the same time, the presence of the heat storage device helps to balance the energy supply and demand of the system, improving the system's ability to respond to load fluctuations.

[0016] Realizing energy cascade utilization: the system not only converts electrical energy into hydrogen energy, but also realizes heat storage and cascade utilization, providing support for the hydrogen production process and supplying excess heat to external heat users, expanding the application range of the system and improving the overall utilization value of energy. BRIEF DESCRIPTION OF DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for purposes of illustration only and are not to be construed as limiting the application. Throughout the drawings, like reference numerals refer to like parts. In the drawings: Figure 1 is a structural schematic diagram of the high-efficiency ammonia hydrogen production system coupled with a heat storage device according to the present application. DETAILED DESCRIPTION

[0018] Exemplary embodiments of the present application will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided so that the present application can be more thoroughly understood and the scope of the present application can be accurately conveyed to those skilled in the art.

[0019] The present application provides a high-efficiency ammonia hydrogen production system coupled with a heat storage device and an implementation method thereof, which solves the problems of low energy utilization efficiency, serious heat waste and inability to realize energy cascade utilization of existing hydrogen production systems, reduces the cost of hydrogen production, improves the stability and safety of the system, and realizes efficient conversion and storage of energy.

[0020] As shown in Figure 1 , the high-efficiency ammonia hydrogen production system coupled with a heat storage device provided by the present application comprises: an ammonia hydrogen production system for providing hydrogen gas for a hydrogenation system; a hydrogenation system connected with the ammonia hydrogen production system for compressing and filling hydrogen gas to users; A refrigeration system is connected with the ammonia hydrogen production system and the hydrogen filling system respectively, and used for cooling hydrogen during filling process to prevent hydrogen from over-temperature during filling.

[0021] In the above embodiment, preferably, the ammonia hydrogen production system comprises a storage tank, a first heat exchanger, a reactor, a TSA (temperature swing adsorption tower), a PSA (pressure swing adsorption tower), a fan and a burner. The storage tank stores liquid ammonia raw material. A first inlet of the first heat exchanger is connected with an outlet of the storage tank, a first outlet of the first heat exchanger is connected with a first inlet of the reactor, and a first outlet of the reactor is connected with a second inlet of the first heat exchanger. An outlet of the burner is connected with a second inlet of the reactor, and an outlet of the fan is connected with a first inlet of the burner. A second outlet of the first heat exchanger is connected with an inlet of the TSA after being connected with a refrigeration system, an inlet of the PSA is connected with a first outlet of the TSA, a second outlet of the TSA and a first outlet of the PSA are respectively connected with a second inlet of the burner, and a second outlet of the PSA is connected with a hydrogen filling system.

[0022] In the above embodiment, preferably, the hydrogen filling system comprises a low-pressure storage tank, a compressor, a high-pressure storage tank and a filling machine, an inlet of the low-pressure storage tank is connected with a second outlet of the PSA, an inlet of the compressor is connected with an outlet of the low-pressure storage tank, an inlet of the high-pressure storage tank is connected with an outlet of the compressor, and an outlet of the high-pressure storage tank is connected with the filling machine after being connected with a refrigeration system.

[0023] In the above embodiment, preferably, the refrigeration system comprises a heat storage device, a generator, a second heat exchanger, an absorber, a pump, a condenser, a third heat exchanger, a refrigeration machine, a cold storage device and a stop valve. A first inlet of the heat storage device is connected with a second outlet of the first heat exchanger through a connecting pipeline, and a first outlet of the heat storage device is connected with an inlet of the TSA through a connecting pipeline. A first inlet of the generator is connected with a second outlet of the first heat exchanger through a connecting pipeline, a first outlet of the generator is connected with an inlet of the TSA through a connecting pipeline, a second outlet of the generator is connected with a second inlet of the heat storage device through a connecting pipeline, and a second outlet of the heat storage device is connected with a second inlet of the generator through a connecting pipeline. The third outlet of the generator is connected with the first inlet of the second heat exchanger, the first outlet of the second heat exchanger is connected with the first inlet of the absorber, the outlet of the absorber is connected with the inlet of the pump, the outlet of the pump is connected with the second inlet of the second heat exchanger, and the second outlet of the second heat exchanger is connected with the third inlet of the generator; The fourth outlet of the generator is connected with the first inlet of the condenser, the second inlet of the condenser is connected with cooling water, the first outlet of the condenser outputs hot water, the second outlet of the condenser is connected with the first inlet of the third heat exchanger, the first outlet of the third heat exchanger is connected with the first inlet of the cold storage device and the first inlet of the refrigeration machine through a connecting pipeline respectively, the first outlet of the cold storage device is connected with the second inlet of the third heat exchanger through a connecting pipeline, the second outlet of the third heat exchanger is connected with the second inlet of the absorber, and the first outlet of the refrigeration machine is connected with the second inlet of the third heat exchanger through a connecting pipeline; The second outlet of the cold storage device is connected with the second inlet of the refrigeration machine through a connecting pipeline, and the second outlet of the refrigeration machine is connected with the second inlet of the cold storage device through a connecting pipeline; The third inlet of the refrigeration machine is connected with the outlet of the high-pressure storage tank, and the third outlet of the refrigeration machine is connected with the inlet of the filling machine; The first inlet of the heat storage device is provided with a first stop valve on a connecting pipeline of the second outlet of the first heat exchanger, the first inlet of the generator is provided with a second stop valve on a connecting pipeline of the second outlet of the first heat exchanger, the first outlet of the heat storage device is provided with a third stop valve on a connecting pipeline of the inlet of the TSA, the first outlet of the generator is provided with a fourth stop valve on a connecting pipeline of the inlet of the TSA, the second outlet of the generator is provided with a fifth stop valve on a connecting pipeline of the second inlet of the heat storage device, the second outlet of the heat storage device is provided with a sixth stop valve on a connecting pipeline of the second inlet of the generator, the first outlet of the third heat exchanger is provided with a seventh stop valve on a connecting pipeline of the first inlet of the cold storage device, the first outlet of the cold storage device is provided with an eighth stop valve on a connecting pipeline of the second inlet of the third heat exchanger, the first outlet of the third heat exchanger is provided with a ninth stop valve on a connecting pipeline of the first inlet of the refrigeration machine, the first outlet of the refrigeration machine is provided with a tenth stop valve on a connecting pipeline of the second inlet of the third heat exchanger, the second outlet of the cold storage device is provided with an eleventh stop valve on a connecting pipeline of the second inlet of the refrigeration machine, and the second outlet of the refrigeration machine is provided with a twelfth stop valve on a connecting pipeline of the second inlet of the cold storage device.

[0024] In the above embodiment, preferably, the application further comprises a waste heat power generation device connected with the second outlet of the reactor and electrically connected with the lithium battery device, for storing electric energy in the lithium battery device, and the lithium battery device supplies electric energy to the power-consuming equipment of the fan and the compressor.

[0025] The application further provides an implementation method of a high-efficiency ammonia hydrogen production system coupled with a heat storage device, comprising the following steps: When the required cold load of the refrigerator is greater than the rated cold load of the refrigeration system, the second stop valve, the fourth stop valve, the fifth stop valve, the sixth stop valve, the ninth stop valve, the tenth stop valve, the eleventh stop valve and the twelfth stop valve are opened, the first stop valve, the third stop valve, the seventh stop valve and the eighth stop valve are closed, the reaction gas after heat exchange in the first heat exchanger enters the generator through the second stop valve to provide heat for the refrigeration working medium, and then enters the TSA through the fourth stop valve, the hot-state heat storage working medium of the heat storage device enters the generator through the sixth stop valve to provide heat for the refrigeration working medium, and then flows back to the heat storage device through the fifth stop valve, the refrigeration working medium of the refrigerator enters the second heat exchanger after being heated by the pump, and then enters the generator, absorbs the heat provided by the reaction gas and the heat storage device, and is separated into two parts, one part is the heavy component working medium, enters the second heat exchanger through the bottom outlet of the generator to preheat the refrigeration working medium, and then enters the absorber to mix with the light component working medium to form the refrigeration working medium, and the other part is the light component working medium, enters the condenser, and the external cooling water absorbs the heat of the light component working medium to liquefy it, the cooling water absorbs heat to be heated and provides hot water to the outside, and the liquefied light component working medium is further cooled in the third heat exchanger, is reduced in pressure by the throttle valve, and then enters the refrigerator through the ninth stop valve, the cold storage working medium of the cold storage device enters the refrigerator through the twelfth stop valve, the added hydrogen gas absorbs the cold energy of the light component working medium and the cold storage working medium to prevent the temperature of the hydrogen gas from rising during the pressure reduction process, and the liquid light component working medium of the refrigerator is vaporized, enters the third heat exchanger through the tenth stop valve to absorb heat and be heated, and then enters the absorber.

[0026] In the above embodiment, preferably, the implementation method further comprises the following steps: When the required cold load of the refrigerator is equal to the rated cold load of the refrigeration system, the refrigeration system executes the equal cold load operation strategy, and on the basis of the high cold load operation strategy, the fifth stop valve, the sixth stop valve, the eleventh stop valve and the twelfth stop valve are closed; at this time, the cold energy converted from the heat provided by the reaction gas can match the cold load demand of the refrigerator, and the heat storage device and the cold storage device do not participate in work.

[0027] In the above embodiment, preferably, the implementation method further comprises the following steps: When the required cold load of the refrigerator is lower than the rated refrigeration load of the refrigeration system, the refrigeration system executes a low refrigeration load operation strategy, on the basis of the high refrigeration load operation strategy, the first stop valve, the third stop valve, the seventh stop valve and the eighth stop valve are opened, and the fifth stop valve, the sixth stop valve, the eleventh stop valve and the twelfth stop valve are closed, and the heat storage device and the cold storage device reserve heat and cold.

[0028] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-efficiency ammonia hydrogen production system coupled with a thermal storage device, characterized in that, The application relates to a hydrogen production system, which comprises: an ammonia hydrogen production system for providing hydrogen for a hydrogen filling system; a hydrogen filling system connected with the ammonia hydrogen production system for compressing and filling hydrogen to users; a refrigeration system connected with the ammonia hydrogen production system and the hydrogen filling system respectively for cooling hydrogen during the filling process to prevent the hydrogen from over-temperature during the filling.

2. The efficient ammonia to hydrogen system of claim 1, wherein, The ammonia hydrogen production system comprises a storage tank, a first heat exchanger, a reactor, a TSA, a PSA, a fan and a burner. The storage tank stores liquid ammonia raw materials. A first inlet of the first heat exchanger is connected with a first outlet of the storage tank, a first outlet of the first heat exchanger is connected with a first inlet of the reactor, and a first outlet of the reactor is connected with a second inlet of the first heat exchanger. An outlet of the burner is connected with a second inlet of the reactor, and an outlet of the fan is connected with a first inlet of the burner. A second outlet of the first heat exchanger is connected with an inlet of the TSA after being connected with the refrigeration system, an inlet of the PSA is connected with a first outlet of the TSA, a second outlet of the TSA and a first outlet of the PSA are respectively connected with a second inlet of the burner, and a second outlet of the PSA is connected with the hydrogen filling system.

3. The efficient ammonia to hydrogen system of claim 2, wherein, The hydrogen filling system comprises a low-pressure storage tank, a compressor, a high-pressure storage tank and a filling machine. An inlet of the low-pressure storage tank is connected with a second outlet of the PSA. An inlet of the compressor is connected with an outlet of the low-pressure storage tank, an inlet of the high-pressure storage tank is connected with an outlet of the compressor, and an outlet of the high-pressure storage tank is connected with the filling machine after being connected with the refrigeration system.

4. The high-efficiency ammonia-based hydrogen production system of claim 3, wherein, The refrigeration system comprises a heat storage device, a generator, a second heat exchanger, an absorber, a pump, a condenser, a third heat exchanger, a refrigeration machine, a cold storage device and a stop valve. A first inlet of the heat storage device is connected with a second outlet of the first heat exchanger through a connecting pipeline, and a first outlet of the heat storage device is connected with an inlet of the TSA through a connecting pipeline. A first inlet of the generator is connected with a second outlet of the first heat exchanger through a connecting pipeline, a first outlet of the generator is connected with an inlet of the TSA through a connecting pipeline, a second outlet of the generator is connected with a second inlet of the heat storage device through a connecting pipeline, and a second outlet of the heat storage device is connected with a second inlet of the generator through a connecting pipeline. A third outlet of the generator is connected with a first inlet of the second heat exchanger, a first outlet of the second heat exchanger is connected with a first inlet of the absorber, an outlet of the absorber is connected with an inlet of the pump, an outlet of the pump is connected with a second inlet of the second heat exchanger, and a second outlet of the second heat exchanger is connected with a third inlet of the generator. The fourth outlet of the generator is connected with the first inlet of the condenser, the second inlet of the condenser is connected with cooling water, the first outlet of the condenser outputs hot water, the second outlet of the condenser is connected with the first inlet of the third heat exchanger, the first outlet of the third heat exchanger is connected with the first inlet of the cold storage device and the first inlet of the refrigeration machine through connecting pipelines respectively, the first outlet of the cold storage device is connected with the second inlet of the third heat exchanger through a connecting pipeline, the second outlet of the third heat exchanger is connected with the second inlet of the absorber, and the first outlet of the refrigeration machine is connected with the second inlet of the third heat exchanger through a connecting pipeline; The second outlet of the cold storage device is connected with the second inlet of the refrigeration machine through a connecting pipeline, and the second outlet of the refrigeration machine is connected with the second inlet of the cold storage device through a connecting pipeline; The third inlet of the refrigeration machine is connected with the outlet of the high-pressure storage tank, and the third outlet of the refrigeration machine is connected with the inlet of the filling machine. The first inlet of the heat storage device is provided with a first stop valve on the connecting pipeline of the second outlet of the first heat exchanger, the first inlet of the generator is provided with a second stop valve on the connecting pipeline of the second outlet of the first heat exchanger, the first outlet of the heat storage device is provided with a third stop valve on the connecting pipeline of the inlet of the TSA, the first outlet of the generator is provided with a fourth stop valve on the connecting pipeline of the inlet of the TSA, the second outlet of the generator is provided with a fifth stop valve on the connecting pipeline of the second inlet of the heat storage device, the second outlet of the heat storage device is provided with a sixth stop valve on the connecting pipeline of the second inlet of the generator, the first outlet of the third heat exchanger is provided with a seventh stop valve on the connecting pipeline of the first inlet of the cold storage device, the first outlet of the cold storage device is provided with an eighth stop valve on the connecting pipeline of the second inlet of the third heat exchanger, the first outlet of the third heat exchanger is provided with a ninth stop valve on the connecting pipeline of the first inlet of the refrigeration machine, the first outlet of the refrigeration machine is provided with a tenth stop valve on the connecting pipeline of the second inlet of the third heat exchanger, the second outlet of the cold storage device is provided with an eleventh stop valve on the connecting pipeline of the second inlet of the refrigeration machine, and the second outlet of the refrigeration machine is provided with a twelfth stop valve on the connecting pipeline of the second inlet of the cold storage device.

5. The efficient ammonia to hydrogen system of claim 4, wherein, A waste heat power generation device is connected with the second outlet of the reactor and electrically connected with a lithium battery device, for storing electric energy in the lithium battery device, and the lithium battery device supplies electric energy to the power-consuming devices of the fan and the compressor.

6. A method of implementing a high-efficiency ammonia hydrogen production system based on the coupled heat storage device according to any one of claims 1 to 5, characterized in that, The method comprises the following steps: The method comprises the following steps: When the required cold load of the refrigerator is greater than the rated refrigeration load of the refrigeration system, the second stop valve, the fourth stop valve, the fifth stop valve, the sixth stop valve, the ninth stop valve, the tenth stop valve, the eleventh stop valve and the twelfth stop valve are opened; the first stop valve, the third stop valve, the seventh stop valve and the eighth stop valve are closed; the reaction gas after heat exchange in the first heat exchanger enters the generator through the second stop valve to provide heat for the refrigeration working medium, and then enters the TSA through the fourth stop valve; the hot state heat storage working medium of the heat storage device enters the generator through the sixth stop valve to provide heat for the refrigeration working medium, and then flows back to the heat storage device through the fifth stop valve; the refrigeration working medium of the refrigerator enters the second heat exchanger after being heated by the pump, and then enters the generator to absorb the heat provided by the reaction gas and the heat storage device, and is separated into two parts, one part is the heavy component working medium, which enters the second heat exchanger through the bottom outlet of the generator to preheat the refrigeration working medium, and then enters the absorber to mix with the light component working medium to form the refrigeration working medium; one part of the light component working medium enters the condenser, and the external cooling water absorbs the heat of the light component working medium to liquefy it, and the cooling water absorbs heat to provide hot water to the outside, and the liquefied light component working medium enters the third heat exchanger to further cool, and then enters the refrigerator through the ninth stop valve after being cooled by the throttling valve; the cold storage working medium of the cold storage device enters the refrigerator through the twelfth stop valve; the added hydrogen gas absorbs the cold of the light component working medium and the cold storage working medium to prevent the temperature of the hydrogen gas from rising during the pressure reduction process; the liquid light component working medium of the refrigerator is gasified and enters the third heat exchanger through the tenth stop valve to absorb heat and then enters the absorber.

7. The method of claim 6, wherein, Further comprising the following steps: When the required cold load of the refrigerator is equal to the rated refrigeration load of the refrigeration system, the refrigeration system executes the equal refrigeration load operation strategy, and on the basis of the high refrigeration load operation strategy, the fifth stop valve, the sixth stop valve, the eleventh stop valve and the twelfth stop valve are closed; at this time, the heat converted from the heat provided by the reaction gas can match the cold load demand of the refrigerator, and the heat storage device and the cold storage device do not participate in work.

8. The method of claim 7, wherein, Further comprising the following steps: When the required cold load of the refrigerator is lower than the rated refrigeration load of the refrigeration system, the refrigeration system executes the low refrigeration load operation strategy, and on the basis of the high refrigeration load operation strategy, the first stop valve, the third stop valve, the seventh stop valve and the eighth stop valve are opened, and the fifth stop valve, the sixth stop valve, the eleventh stop valve and the twelfth stop valve are closed, and the heat storage device and the cold storage device store heat and cold.

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