Novel green hydrogen ammonia production cooling system and ammonia gas production method

Abstract

The invention provides a novel green hydrogen ammonia production cooling system and an ammonia production method. The system comprises a cooling nitrogen production module, a water electrolysis hydrogen production cooling module and an ammonia synthesis module, the cooled nitrogen preparation module is used for compressing nitrogen, air and the nitrogen-adsorbed gas to obtain compressed gas; cooling the compressed gas to obtain cooled gas; the water electrolysis hydrogen production cooling module is cooled through cooling gas; and the ammonia gas synthesis module is used for proportionally mixing the mixed gas prepared by the water electrolysis hydrogen production cooling module with the dried nitrogen, and synthesizing and collecting ammonia gas. In the embodiment of the invention, the nitrogen serves as one of synthesis raw materials of the ammonia gas and also serves as a coolant of the water electrolysis hydrogen production cooling module to cool each part in the water electrolysis hydrogen production cooling module, so that the traditional water cooling is replaced, the waste of water resources is reduced, the production process of the ammonia gas is simplified, and the synthesis cost of the green ammonia is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ammonia production, and particularly relates to a novel green hydrogen-based ammonia production cooling system and an ammonia production method. Background Art

[0002] Green hydrogen-based ammonia production is a green and environmentally friendly way of ammonia production. Green hydrogen is mainly produced by electrolytic hydrogen production. An electrolytic cell applies an electric current through electrodes to decompose water molecules into hydrogen and oxygen. In related technologies, traditional water cooling methods are usually used to cool the electrolytic water hydrogen production cooling system, that is, cooling water is used to take away the heat generated by the electrolytic cell, so as to maintain the normal operating temperature of the electrolytic cell. However, this cooling method requires a large amount of water resources, circulating water agents, and a large amount of upfront investment and later maintenance costs. Taking a 1000 Nm3 / h alkaline electrolytic cell as an example, if a closed-loop circulating water cooling system is adopted, the consumption is as high as 100-200 tons / hour when the circulating cooling water temperature is 30-40°C. When an open-type cooling tower is used in the circulating cooling water system, the evaporation loss, makeup water volume, and sewage discharge volume of the circulating cooling water system are very large, which not only wastes a large amount of water resources and capital investment, but also brings environmental pollution problems. Summary of the Invention

[0003] In view of the above problems, the embodiments of the present invention provide a novel green hydrogen-based ammonia production cooling system and an ammonia production method to solve the problem of wasting a large amount of water resources and capital investment by cooling the electrolytic cell through traditional water cooling methods in the prior art.

[0004] In a first aspect, the embodiments of the present invention provide a novel green hydrogen-based ammonia production cooling system, which includes a novel green hydrogen-based ammonia production cooling system, and the system includes a cooling nitrogen production module, an electrolytic water hydrogen production cooling module, and an ammonia synthesis module;

[0005] The cooling nitrogen production module is used to compress nitrogen, air, and the gas after nitrogen adsorption to obtain compressed gas; cool the compressed gas to obtain cooled gas; and cool the electrolytic water hydrogen production cooling module with the cooled gas;

[0006] The ammonia synthesis module is used to mix and match the mixed gas produced by the electrolytic water hydrogen production cooling module with the dried nitrogen for ammonia synthesis and collection.

[0007] In a possible implementation manner, the cooling nitrogen production module includes a pressure swing adsorption unit, a first compressor unit, a first cooling unit, a second compressor unit, and a second cooling unit; the compressed gas includes compressed nitrogen, compressed air, and the compressed gas after nitrogen adsorption; the cooled gas includes cooled nitrogen, cooled air, and the cooled gas after nitrogen adsorption;

[0008] The pressure swing adsorption unit is used to adsorb nitrogen from air and send the adsorbed nitrogen into the first compressor unit;

[0009] The first compressor unit is used to compress the nitrogen to generate compressed nitrogen;

[0010] The first cooling unit is used to cool down the compressed nitrogen to generate cooled nitrogen;

[0011] The second compressor unit is used to compress air and the gas after nitrogen adsorption to generate compressed air and the compressed gas after nitrogen adsorption;

[0012] The second cooling unit is used to cool down the compressed air and the compressed gas after nitrogen adsorption to generate cooled air and the cooled gas after nitrogen adsorption.

[0013] In a possible implementation manner, the pressure swing adsorption unit at least includes a first pressure swing adsorption unit and a second pressure swing adsorption unit;

[0014] The first pressure swing adsorption unit and the second pressure swing adsorption unit work alternately;

[0015] When the first pressure swing adsorption unit is used to adsorb nitrogen from air, the second pressure swing adsorption unit is used to send the adsorbed nitrogen into the first compressor unit;

[0016] When the second pressure swing adsorption unit is used to adsorb nitrogen from air, the first pressure swing adsorption unit is used to send the adsorbed nitrogen into the first compressor unit.

[0017] In a possible implementation manner, the system further includes a first wind turbine unit and a second wind turbine unit; the first compressor unit is disposed adjacent to the first wind turbine unit, and the second compressor unit is disposed adjacent to the second wind turbine unit;

[0018] The first compressor unit and the second compressor unit respectively use the wind power generated by the adjacent wind turbine units to compress the gas to generate compressed gas, and store a part of the compressed gas as standby compressed gas, and release the standby compressed gas during low wind valleys to assist the adjacent wind turbine units in generating electricity.

[0019] In a possible implementation manner, the electrolytic water hydrogen production cooling module includes a power supply unit, a hydrogen-side gas-liquid separator, and an oxygen-side gas-liquid separator;

[0020] The power supply unit is air-cooled and cooled by the cooled nitrogen;

[0021] The cooling nitrogen gas is introduced into the hydrogen-side gas-liquid separator to cool the gas-liquid mixture in the hydrogen-side gas-liquid separator, achieving hydrogen-side gas-liquid separation;

[0022] The cooling nitrogen gas, the cooling air, or the cooling gas after the adsorbed nitrogen gas is introduced into the oxygen-side gas-liquid separator to cool the gas-liquid mixture in the oxygen-side gas-liquid separator, achieving oxygen-side gas-liquid separation.

[0023] In a possible implementation, the electrolytic water hydrogen production cooling module further includes a hydrogen-side purifier, an oxygen-side purifier, and a heat exchanger;

[0024] The electrolyte separated from the hydrogen-side gas-liquid separator flows into the hydrogen-side purifier, and the electrolyte separated from the oxygen-side gas-liquid separator flows into the oxygen-side purifier. The electrolytes after being purified by the hydrogen-side purifier and the oxygen-side purifier both flow into the heat exchanger.

[0025] In a possible implementation, the electrolytic water hydrogen production cooling module further includes a heat exchanger and an electrolytic cell;

[0026] The cooling nitrogen gas is introduced into the heat exchanger to cool the electrolyte inside the heat exchanger, and the cooled electrolyte is sent back to the electrolytic cell to control the temperature of the electrolytic cell.

[0027] In a possible implementation, the ammonia synthesis module includes a dryer, a hydrogen-nitrogen mixing device, an ammonia synthesis device, and an ammonia collection device;

[0028] The dryer is used to dry the mixed gas to obtain dry gas;

[0029] The hydrogen-nitrogen mixing device is used to proportionally mix the dry gas with the dried nitrogen gas. When the gas collection amount reaches a preset synthesis threshold, the collected gas is sent to the ammonia synthesis device for ammonia synthesis;

[0030] The ammonia collection device is used to collect the ammonia synthesized by the hydrogen-nitrogen mixing device.

[0031] In a possible implementation, the hydrogen-nitrogen mixing device at least includes a first hydrogen-nitrogen mixing device and a second hydrogen-nitrogen mixing device;

[0032] The first hydrogen-nitrogen mixing device and the second hydrogen-nitrogen mixing device collect gas alternately;

[0033] The first hydrogen-nitrogen mixing device is used to send the collected gas to the ammonia synthesis device when the gas collection amount reaches the synthesis threshold, and the second hydrogen-nitrogen mixing device collects the gas;

[0034] The second hydrogen-nitrogen mixing device is used to send the collected gas into the ammonia synthesis device after the gas collection amount reaches the synthesis threshold, and the first hydrogen-nitrogen mixing device is used to collect the gas.

[0035] Second, an ammonia production method provided by an embodiment of the present invention is applied to a new green hydrogen-to-ammonia cooling system. The system includes a cooling nitrogen production module, an electrolytic water hydrogen production cooling module, and an ammonia synthesis module. The method includes:

[0036] The cooling nitrogen production module compresses nitrogen, air, and the gas after nitrogen adsorption to obtain compressed gas; cools the compressed gas to obtain cooled gas; and cools the electrolytic water hydrogen production cooling module with the cooled gas.

[0037] The ammonia synthesis module mixes and proportions the mixed gas produced by the electrolytic water hydrogen production cooling module with dried nitrogen for ammonia synthesis and collection.

[0038] In the technical solution provided by the embodiment of the present invention, nitrogen serves as both one of the raw materials for ammonia synthesis and a coolant for the electrolytic water hydrogen production cooling module to cool each component in the electrolytic water hydrogen production cooling module, replacing the traditional water cooling, which can not only reduce the waste of water resources, but also simplify the ammonia production process and reduce the upfront investment and later maintenance costs of equipment.

[0039] In the embodiment of the present invention, the wind power generation of the wind turbine is used to supply power to the compressor set, which solves the problem of wind power consumption to a certain extent. Description of the Drawings

[0040] Figure 1 It is a schematic diagram of a new green hydrogen-to-ammonia cooling system provided by an embodiment of the present invention.

[0041] Figure 2 It is a flowchart of an ammonia production method provided by an embodiment of the present invention. Detailed Embodiments

[0042] To make the purpose, technical solution, and advantages of the present invention clearer and more understandable, the present invention will be further described below with reference to the drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0043] Figure 1 It is a schematic diagram of a new green hydrogen-to-ammonia cooling system provided by an embodiment of the present invention, as Figure 1As shown in the figure, the new green hydrogen ammonia production cooling system includes a cooling nitrogen production module 1, an electrolyzed water hydrogen production cooling module 2, and an ammonia synthesis module 3.

[0044] In the embodiment of the present invention, the cooling nitrogen production module 1 includes a pressure swing adsorption unit 11, a first compressor unit 12, a first cooling unit 13, a second compressor unit 14, and a second cooling unit 15. The compressed gas includes compressed nitrogen, compressed air, and the compressed gas after nitrogen adsorption; the cooling gas includes cooled nitrogen, cooled air, and the cooled gas after nitrogen adsorption. The pressure swing adsorption unit 11 is used to adsorb nitrogen from the air by pressure swing adsorption and send the adsorbed nitrogen to the first compressor unit; the first compressor unit 12 is used to compress the nitrogen to generate compressed nitrogen; the first cooling unit 13 is used to cool the compressed nitrogen to generate cooled nitrogen; the second compressor unit 14 is used to compress the air and the gas after nitrogen adsorption to generate compressed air and the compressed gas after nitrogen adsorption; the second cooling unit 15 is used to cool the compressed air and the compressed gas after nitrogen adsorption to generate cooled air and the cooled gas after nitrogen adsorption. Among them, a part of the second compressor unit 14 is used to compress the air, and a part is used to compress the gas after nitrogen adsorption.

[0045] In the embodiment of the present invention, the pressure swing adsorption unit 11 at least includes a first pressure swing adsorption unit 111 and a second pressure swing adsorption unit 112. The first pressure swing adsorption unit 111 and the second pressure swing adsorption unit 112 work alternately; when the first pressure swing adsorption unit 111 is used to adsorb nitrogen from the air, the second pressure swing adsorption unit 112 is used to send the adsorbed nitrogen to the first compressor unit 12; when the second pressure swing adsorption unit 112 is used to adsorb nitrogen from the air, the first pressure swing adsorption unit 111 is used to send the adsorbed nitrogen to the first compressor unit 12. In practical applications, the pressure swing adsorption unit may include more than two pressure swing adsorption units, and the embodiment of the present invention does not limit this.

[0046] In the embodiment of the present invention, temperature detection instruments and pressure detection instruments are respectively arranged at the outlets of the first compressor unit 12, the first cooling unit 13, the second compressor unit 14, and the second cooling unit 15. Among them, the temperature detection instrument is used to perform temperature detection and generate a temperature detection result; the pressure detection instrument is used to perform pressure detection and generate a pressure detection result. The staff can adjust the relevant pipeline valves according to the temperature detection result and the pressure detection result to enable the new green hydrogen ammonia production cooling system to operate safely and efficiently.

[0047] In an embodiment of the present invention, the new green hydrogen ammonia production cooling system further includes a wind turbine 4, which includes a first wind turbine 41 and a second wind turbine 42; the first compressor unit 12 is disposed adjacent to the first wind turbine 41, and the second compressor unit 14 is disposed adjacent to the second wind turbine 42. The first compressor unit 12 and the second compressor unit 14 respectively use the wind power generated by the adjacent wind turbines to compress the gas to generate compressed gas, and store a part of the compressed gas as standby compressed gas, and release the standby compressed gas during the low wind valley period to assist the adjacent wind turbines in generating electricity. That is to say, the electricity used by the compressor unit comes from the wind turbine, and at the same time, the compressor unit also releases the standby compressed gas to provide kinetic energy when the wind is weak, so as to drive the wind turbine to generate wind power.

[0048] As Figure 1 shown, the cooling nitrogen production module 1 further includes a nitrogen purifier 16, which is used to remove impurities in nitrogen and improve the purity of nitrogen.

[0049] In an embodiment of the present invention, the electrolytic water hydrogen production cooling module 2 includes a power supply unit 21 and an electrolytic cell 22. The power supply unit 21 supplies direct current to the electrolytic cell 22 by means of new energy inversion and rectification. In practical applications, the power supply unit 21 can also adopt other power supply methods to supply power to the electrolytic cell 22, and the embodiments of the present invention do not limit this. The power supply unit 21 is cooled by cooling nitrogen. Compared with the traditional water-cooled heat dissipation, in the embodiment of the present invention, the power supply unit is cooled by cooling nitrogen, which improves the heat dissipation efficiency of the power supply unit, and the relevant pipeline valves can be adjusted according to the internal temperature of the power supply unit to control the flow rate of compressed nitrogen.

[0050] In an embodiment of the present invention, the electrolytic water hydrogen production cooling module 2 further includes a hydrogen-side gas-liquid separator 23 and an oxygen-side gas-liquid separator 24. Inside the electrolytic cell 22, the electrolyte produces hydrogen under the electrolysis of the power supply unit 21, generating hydrogen containing electrolyte and oxygen containing electrolyte. Among them, the hydrogen containing electrolyte enters the hydrogen-side gas-liquid separator 23, and the oxygen containing electrolyte enters the oxygen-side gas-liquid separator 24. Cooling nitrogen is introduced into the hydrogen-side gas-liquid separator 23 to cool the gas-liquid mixture in the hydrogen-side gas-liquid separator 23 to achieve hydrogen-side gas-liquid separation. Cooling nitrogen, cooling air or the cooled gas after adsorbed nitrogen is introduced into the oxygen-side gas-liquid separator 24 to cool the gas-liquid mixture in the oxygen-side gas-liquid separator 24 to achieve oxygen-side gas-liquid separation.

[0051] In the embodiment of the present invention, the electrolyzed water hydrogen production cooling module 2 further includes a hydrogen-side purifier 25, an oxygen-side purifier 26, and a heat exchanger 27. The gas separated from the oxygen-side gas-liquid separator 24 is discharged through the oxygen-side exhaust port or enters the second compressor unit 14. The electrolyte separated from the hydrogen-side gas-liquid separator 23 flows into the hydrogen-side purifier 25, and the electrolyte separated from the oxygen-side gas-liquid separator 24 flows into the oxygen-side purifier 26. The electrolytes after being purified by the hydrogen-side purifier 25 and the oxygen-side purifier 26 both flow into the heat exchanger 27. Cooling nitrogen is introduced into the heat exchanger 27 to cool the electrolyte inside the heat exchanger 27, and the cooled electrolyte is sent back to the electrolytic cell 22 to control the temperature of the electrolytic cell 22. The compressed nitrogen in the heat exchanger 27 escapes from the upper part of the heat exchanger 27 and is incorporated into the nitrogen circulation system to re-enter the first compressor unit 12. Inside the heat exchanger 27, the cooling nitrogen directly and fully contacts the electrolyte, enabling rapid and controllable cooling of the electrolyte. In addition, temperature detection instruments and pressure detection instruments are respectively arranged on both sides of the heat exchanger 27, capable of realizing real-time monitoring of temperature and pressure to control the cell temperature of the electrolytic cell, so that the electrochemical reaction inside the electrolytic cell operates efficiently.

[0052] In the embodiment of the present invention, the mixed gas produced by the electrolyzed water hydrogen production cooling module 2 is the gas separated from the hydrogen-side gas-liquid separator 23, that is, a hydrogen-nitrogen mixed gas. Temperature detection instruments, pressure detection instruments, flow rate detection instruments, and gas content detection instruments are arranged at the outlet of the hydrogen-side gas-liquid separator 23, which are respectively used for temperature detection, pressure detection, flow rate detection, and gas content detection of the hydrogen-nitrogen mixed gas. The qualified gas is sent to the ammonia synthesis module 3 for ammonia synthesis and collection; the unqualified gas is discharged through the hydrogen-side exhaust port.

[0053] In the embodiment of the present invention, the ammonia synthesis module 3 includes a dryer 31, a hydrogen-nitrogen mixing device 32, an ammonia synthesis device 33, and an ammonia collection device 34. The dryer 31 is used to dry the qualified mixed gas to obtain dry gas; the hydrogen-nitrogen mixing device 32 is used to mix and match the dry gas with the dried nitrogen. When the gas collection amount reaches the preset synthesis threshold, the collected gas is sent to the ammonia synthesis device 33 for ammonia synthesis; the ammonia collection device 34 is used to collect the ammonia synthesized by the hydrogen-nitrogen mixing device.

[0054] It should be noted that when the nitrogen content in the dry gas is insufficient, a part of nitrogen needs to be supplemented and sent into the dryer, and the dried nitrogen and the dry gas are sent into the hydrogen-nitrogen mixing device 32 together to ensure the normal production of ammonia.

[0055] In the embodiments of the present invention, the hydrogen-nitrogen mixing device 32 includes at least a first hydrogen-nitrogen mixing device and a second hydrogen-nitrogen mixing device. The first hydrogen-nitrogen mixing device and the second hydrogen-nitrogen mixing device alternately collect gases. The first hydrogen-nitrogen mixing device and the second hydrogen-nitrogen mixing device alternately collect hydrogen and nitrogen; the first hydrogen-nitrogen mixing device is used to send the collected gas into the ammonia synthesis device after the gas collection amount reaches the synthesis threshold, and the second hydrogen-nitrogen mixing device conducts gas collection; the second hydrogen-nitrogen mixing device is used to send the collected gas into the ammonia synthesis device after the gas collection amount reaches the synthesis threshold, and the first hydrogen-nitrogen mixing device conducts gas collection.

[0056] The novel green hydrogen-based ammonia production cooling system provided by the embodiments of the present invention can have a wide range of applications in the fields of green hydrogen and green ammonia production industry, new energy applications, environmental protection industry, etc. First, in the field of green hydrogen and green ammonia production industry, the novel green hydrogen-based ammonia production cooling system of the present invention greatly reduces the waste of water resources, simplifies the synthesis process of green ammonia, reduces capital investment, and improves the safety in the process of green hydrogen-based ammonia production. Second, in the field of new energy applications, the present invention uses the wind power generation of wind turbines to supply power to the compressor unit, which solves the problem of wind power consumption to a certain extent. And, green hydrogen refers to the direct production by renewable energy power generation such as solar energy and wind energy, and basically no greenhouse gases are generated during the production process. It is a green and environmentally friendly hydrogen production method, which conforms to the current global sustainable development trend. Finally, in the field of environmental protection industry, the novel green hydrogen-based ammonia production cooling system of the present invention does not require a large amount of circulating water agents, which not only reduces costs but also reduces environmental pollution, and has a positive promoting effect on the development of the environmental protection industry. At the same time, since the cooling system of the present invention uses compressed nitrogen for cooling, this also provides a new technical route for the environmental protection industry. Generally speaking, the novel green hydrogen-based ammonia production cooling system of the present invention has broad application prospects in the above-mentioned several fields, with huge market demand, and is expected to promote the technological progress and industrial development of related fields.

[0057] In the technical solution provided by the embodiments of the present invention, nitrogen is used not only as one of the raw materials for ammonia synthesis but also as a coolant for the electrolytic water hydrogen production cooling module to cool each component in the electrolytic water hydrogen production cooling module, replacing the traditional water cooling, which can not only reduce the waste of water resources but also simplify the ammonia production process and reduce the upfront investment and later maintenance costs of equipment.

[0058] In the embodiments of the present invention, the wind power generation of wind turbines is used to supply power to the compressor unit, which solves the problem of wind power consumption to a certain extent.

[0059] Figure 2 It is a flowchart of a method for producing ammonia provided by the embodiments of the present invention. As Figure 2 shown, the method includes:

[0060] Step 101: The cooling nitrogen production module compresses nitrogen, air, and the gas after nitrogen adsorption to obtain compressed gas; cools the compressed gas to obtain cooled gas; and cools the electrolytic water hydrogen production cooling module with the cooled gas.

[0061] In the embodiments of the present invention, each step is executed by a new green hydrogen ammonia production cooling system, which includes a cooling nitrogen production module, an electrolytic water hydrogen production cooling module, and an ammonia synthesis module. For specific descriptions, reference can be made to the embodiments of the above new green hydrogen ammonia production cooling system. For the sake of brevity, the descriptions will not be repeated here.

[0062] Step 102: The ammonia synthesis module mixes and proportions the mixed gas produced by the electrolytic water hydrogen production cooling module with dried nitrogen for ammonia synthesis and collection.

[0063] In the technical solution provided by the embodiments of the present invention, nitrogen serves as both one of the raw materials for ammonia synthesis and the coolant for the electrolytic water hydrogen production cooling module, cooling each component in the electrolytic water hydrogen production cooling module, replacing the traditional water cooling, which can not only reduce the waste of water resources, but also simplify the ammonia production process and reduce the upfront investment and later maintenance costs of equipment.

[0064] In the embodiments of the present invention, the wind power generation of the wind turbine is used to supply power to the compressor unit, which solves the problem of wind power consumption to a certain extent.

[0065] As described above, only the specific preferred embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A novel green hydrogen ammonia production cooling system, characterized in that, The system includes a cooling nitrogen production module, an electrolytic water hydrogen production cooling module, and an ammonia synthesis module; The cooling nitrogen production module is used to compress nitrogen, air, and the gas after nitrogen adsorption to obtain compressed gas; cool the compressed gas to obtain cooled gas; and cool the electrolytic water hydrogen production cooling module with the cooled gas; The ammonia synthesis module is used to mix and proportion the mixed gas produced by the electrolytic water hydrogen production cooling module with the dried nitrogen, and perform ammonia synthesis and collection.

2. The system according to claim 1, wherein The cooling nitrogen production module includes a pressure swing adsorption unit, a first compressor unit, a first cooling unit, a second compressor unit, and a second cooling unit; the compressed gas includes compressed nitrogen, compressed air, and the compressed gas after nitrogen adsorption; the cooled gas includes cooled nitrogen, cooled air, and the cooled gas after nitrogen adsorption; The pressure swing adsorption unit is used to adsorb nitrogen from the air by pressure swing adsorption and send the adsorbed nitrogen to the first compressor unit; The first compressor unit is used to compress the nitrogen to generate compressed nitrogen; The first cooling unit is used to cool the compressed nitrogen to generate cooled nitrogen; The second compressor unit is used to compress air and the gas after nitrogen adsorption to generate compressed air and the compressed gas after nitrogen adsorption; The second cooling unit is used to cool the compressed air and the compressed gas after nitrogen adsorption to generate cooled air and the cooled gas after nitrogen adsorption.

3. The system according to claim 2, wherein The pressure swing adsorption unit includes at least a first pressure swing adsorption unit and a second pressure swing adsorption unit; The first pressure swing adsorption unit and the second pressure swing adsorption unit work alternately; When the first pressure swing adsorption unit is used to adsorb nitrogen from the air, the second pressure swing adsorption unit is used to send the adsorbed nitrogen to the first compressor unit; When the second pressure swing adsorption unit is used to adsorb nitrogen from the air, the first pressure swing adsorption unit is used to send the adsorbed nitrogen to the first compressor unit.

4. The system according to claim 2, wherein The system further includes a first wind turbine generator set and a second wind turbine generator set; the first compressor unit is disposed adjacent to the first wind turbine generator set, and the second compressor unit is disposed adjacent to the second wind turbine generator set; The first compressor unit and the second compressor unit respectively use the wind power generated by the adjacent wind turbine generator sets to compress the gas to generate compressed gas, and store a part of the compressed gas as standby compressed gas, and release the standby compressed gas during low wind valley periods to assist the adjacent wind turbine generator sets in generating electricity.

5. The system according to claim 2, wherein The electrolytic water hydrogen production cooling module includes a power supply unit, a hydrogen-side gas-liquid separator, and an oxygen-side gas-liquid separator; The power supply unit is air-cooled and cooled by the cooled nitrogen; The cooled nitrogen is introduced into the hydrogen-side gas-liquid separator to cool the gas-liquid mixture in the hydrogen-side gas-liquid separator to achieve hydrogen-side gas-liquid separation; The cooled nitrogen, the cooled air, or the cooled gas after nitrogen adsorption is introduced into the oxygen-side gas-liquid separator to cool the gas-liquid mixture in the oxygen-side gas-liquid separator to achieve oxygen-side gas-liquid separation.

6. The system according to claim 5, characterized in that, The hydrogen production cooling module for electrolyzed water also includes a hydrogen-side purifier, an oxygen-side purifier, and a heat exchanger; The electrolyte separated from the hydrogen-side gas-liquid separator flows into the hydrogen-side purifier, and the electrolyte separated from the oxygen-side gas-liquid separator flows into the oxygen-side purifier. The electrolytes after purification by the hydrogen-side purifier and the oxygen-side purifier both flow into the heat exchanger.

7. The system according to claim 6, wherein The hydrogen production cooling module for electrolyzed water also includes an electrolytic cell; Cooling nitrogen gas is introduced into the heat exchanger to cool the electrolyte inside the heat exchanger, and the cooled electrolyte is sent back to the electrolytic cell to control the temperature of the electrolytic cell.

8. The system according to claim 1, wherein The ammonia synthesis module includes a dryer, a hydrogen-nitrogen mixing device, an ammonia synthesis device, and an ammonia collection device; The dryer is used to dry the mixed gas to obtain a dry gas; The hydrogen-nitrogen mixing device is used to proportionally mix the dry gas with the dried nitrogen gas. When the gas collection amount reaches a preset synthesis threshold, the collected gas is sent to the ammonia synthesis device for ammonia synthesis; The ammonia collection device is used to collect the ammonia synthesized by the hydrogen-nitrogen mixing device.

9. The system according to claim 8, wherein The hydrogen-nitrogen mixing device at least includes a first hydrogen-nitrogen mixing device and a second hydrogen-nitrogen mixing device; The first hydrogen-nitrogen mixing device and the second hydrogen-nitrogen mixing device collect gas alternately; The first hydrogen-nitrogen mixing device is used to send the collected gas to the ammonia synthesis device after the gas collection amount reaches the synthesis threshold, and the second hydrogen-nitrogen mixing device is used for gas collection; The second hydrogen-nitrogen mixing device is used to send the collected gas to the ammonia synthesis device after the gas collection amount reaches the synthesis threshold, and the first hydrogen-nitrogen mixing device is used for gas collection.

10. A method for producing ammonia, characterized in that, Applied to a new green hydrogen-to-ammonia cooling system, the system includes a cooling nitrogen production module, a hydrogen production cooling module for electrolyzed water, and an ammonia synthesis module. The method includes: The cooling nitrogen production module compresses nitrogen gas, air, and the gas after nitrogen adsorption to obtain a compressed gas; cools the compressed gas to obtain a cooling gas; and cools the hydrogen production cooling module for electrolyzed water with the cooling gas; The ammonia synthesis module proportionally mixes the mixed gas produced by the hydrogen production cooling module for electrolyzed water with the dried nitrogen gas for ammonia synthesis and collection.

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