A compressed air solidification energy storage power generation system and method of use thereof

Abstract

The application discloses a compressed air solidification energy storage power generation system and a use method thereof, which comprises a plurality of air compressors, coolers, cooling dryers, high-temperature generators, gas storage tanks filled with solidification energy storage materials, heat exchangers, a plurality of expanders, low-temperature storage tanks, high-temperature storage tanks and gas and liquid connecting pipelines which are sequentially connected; the working state of the system is adjusted by adjusting various valves; in the gas storage stage, the air is compressed by the plurality of air compressors, the temperature of the high-pressure gas is reduced by the coolers, and then the high-pressure gas is stored in the gas storage tanks; in the gas discharge power generation stage, the pressure of the gas is increased by heating the gas storage tanks, and the high-pressure gas drives the expander and the generator to generate power. The application fully utilizes the waste heat in the gas storage and power generation processes, can realize efficient air compression storage, and effectively reduces the energy consumption of the compressed air.

Description

Technical Field

[0001] This invention belongs to the field of renewable energy storage technology, specifically relating to a compressed air solidification energy storage power generation system and its usage method. Background Technology

[0002] Because renewable energy sources such as wind and solar power are highly uncontrollable, it is necessary to introduce energy storage as a flexible adjustment resource in order to maintain the balance between power supply and consumption and ensure grid security. Therefore, energy storage is an essential infrastructure for the development of new energy.

[0003] Compressed air energy storage utilizes electricity generated from new energy sources such as solar and wind power to store compressed air, which is then released during peak grid load periods to drive steam turbines for power generation. It boasts advantages such as large storage capacity, long storage period, and low investment, and is considered one of the most promising large-scale energy storage technologies.

[0004] The gas compression process consumes a lot of energy. When high-pressure gas storage is used, the energy storage efficiency of compressed air will be low. At the same time, the insufficient utilization of waste heat in the gas storage and power generation processes also affects the overall energy storage efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a compressed air solidification energy storage and power generation system and its usage method, which makes full use of the waste heat in the gas storage and power generation process, can achieve high-efficiency air compression storage, and effectively reduce compressed air energy consumption.

[0006] To achieve the above objectives, the present invention provides a compressed air solidification energy storage and power generation system, including an air storage tank and an air filter. The air storage tank is provided with an air inlet, an air outlet, a heat exchange fluid inlet 1, and a heat exchange fluid inlet 2. The air storage tank is provided with a ventilation pipe and a heat exchange pipe. The ventilation pipe is provided with several openings. The two ends of the ventilation pipe are respectively connected to the air inlet and the air outlet through an expansion and compression device. The two ends of the heat exchange pipe are respectively connected to the heat exchange fluid inlet 1 and the heat exchange fluid inlet 2. The air storage tank is filled with solidified air storage material.

[0007] The air filter is connected to the air inlet of the air tank in sequence through a multi-stage air compressor, a cooling dryer, and four air valves. The front end of the cooling dryer is connected to air valve two, and air valve two and the cooling dryer are connected in parallel to air valve one.

[0008] Each stage of the air compressor is connected to a cooler at the rear.

[0009] All coolers and gas storage tanks are connected to cryogenic and high-temperature storage tanks to form a heat exchange and cooling circuit: the cryogenic heat exchange liquid flowing out of the outlet of the cryogenic storage tank is simultaneously sent to all coolers and gas storage tanks and then enters the high-temperature storage tank.

[0010] The low-temperature heat exchange fluid of the low-temperature storage tank enters the gas storage tank from heat exchange fluid interface one, flows through the heat exchange pipe and then flows out of the gas storage tank through heat exchange fluid interface two, and finally enters the high-temperature storage tank. The outlet of the low-temperature storage tank is connected to heat exchange fluid interface one by liquid valve two, and the inlet of the high-temperature storage tank is connected to heat exchange fluid interface two by liquid valve one.

[0011] The gas tank's outlet is connected to a multi-stage expander, and each expander has a heat exchanger connected to its front end.

[0012] All heat exchangers and gas storage tanks are connected to low-temperature storage tanks and high-temperature storage tanks to form a heat exchange and heating loop: the high-temperature heat exchange liquid flowing out of the outlet of the high-temperature storage tank is simultaneously sent to all heat exchangers and gas storage tanks and then enters the low-temperature storage tank.

[0013] The high-temperature heat exchange fluid of the high-temperature storage tank enters the gas storage tank from heat exchange fluid interface two, flows through the heat exchange pipe and then flows out of the gas storage tank through heat exchange fluid interface one, and finally enters the low-temperature storage tank. A liquid valve three is connected between the outlet of the high-temperature storage tank and heat exchange fluid interface two, and a liquid valve four is connected between the inlet of the low-temperature storage tank and heat exchange fluid interface one.

[0014] As a further embodiment of the present invention: gas valve four is connected in parallel with gas valve three and high temperature generator, a flexible inflatable bladder is detachably connected in the middle of the gas pipeline, a branch is provided between the gas storage tank and the heat exchanger, and gas valve five is connected to the branch.

[0015] As a further aspect of the present invention: the ventilation pipe is a cylindrical tube, and the openings are unevenly distributed on the cylindrical tube, with the openings being denser closer to the air outlet.

[0016] As a further aspect of the present invention: all coolers and cooling dryers are connected to a condensate tank.

[0017] The present invention also provides a method for using a compressed air solidification energy storage and power generation system, comprising:

[0018] Gas storage stage:

[0019] Atmospheric air is filtered through an air filter. The filtered gas is then compressed by a multi-stage air compressor, which raises the temperature and releases heat. Liquid valves 1 and 2 are opened, while liquid valves 3 and 4 are closed. The low-temperature heat exchange fluid in the low-temperature storage tank flows through a cooler and then into the high-temperature storage tank, recovering the heat generated during gas compression. The low-temperature heat exchange fluid in the low-temperature storage tank also flows through a gas storage tank to the high-temperature storage tank, where it cools the gas storage tank, increasing the solidification capacity and recovering the heat generated during the solidification process.

[0020] During summer operation, the air is a high-temperature and high-humidity gas. Open gas circuit valve 2 and gas circuit valve 4, close gas circuit valve 1 and gas circuit valve 3. The high-pressure gas, after being compressed by the multi-stage compressor, is cooled and dried by the cooling dryer and then enters the gas storage tank through the air inlet.

[0021] During winter operation, the air is cold and humid. Open gas valve 1 and gas valve 4, close gas valve 2 and gas valve 3, and the high-pressure gas compressed by the multi-stage compressor will directly enter the gas storage tank through the air inlet.

[0022] During the gas release and power generation stage: As compressed air expands and performs work, its temperature drops and it needs to absorb heat. Liquid valves three and four are opened, while liquid valves one and two are closed. The high-temperature heat exchange fluid from the high-temperature storage tank flows through the gas storage tank to the low-temperature storage tank, where it heats the gas inside, increasing its expansion energy. The high-temperature heat exchange fluid from the high-temperature storage tank then flows through a heat exchanger for further heating, further increasing the gas expansion energy. The cooled high-temperature heat exchange fluid then flows into the low-temperature storage tank. The high-pressure, high-temperature gas drives the expander to perform work, which in turn drives the generator to generate electricity.

[0023] Furthermore, after the system has been operating for a certain period of time for gas storage and power generation, gas valve three is opened and gas valve four is closed. The temperature of the drying gas is increased by the high-temperature generator. A flexible inflatable bladder is inserted into the ventilation pipe, and the opening in the middle area of ​​the ventilation pipe is sealed, leaving only the upper and lower ventilation holes. The drying gas flows fully through the gas tank's inlet and ventilation pipes to solidify the gas storage material inside the gas tank. Then, the drying gas carrying moisture flows out of the gas tank from the outlet. Gas valve five is opened, and the high-temperature drying gas passes through the gas tank, dries the solidified gas storage material, and is then directly discharged into the atmosphere.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. This invention, by filling the gas storage tank with solidified gas storage material, can significantly improve the gas storage ratio, achieve lower storage pressure, and maintain the storage volume, thereby enabling compressed air energy storage with smaller size and lower pressure, and significantly improving energy storage density.

[0026] 2. By switching the heat exchange operation mode, this invention collects the heat from the solidification and storage process for gas-driven expander power generation, which improves the efficiency of heat energy utilization, makes full use of the waste heat in the gas storage and power generation process, and can achieve high-efficiency air compression storage, effectively reducing compressed air energy consumption.

[0027] 3. This invention adjusts the use of the cooling dryer according to the temperature and humidity of the gas in the environment. The cooling dryer is turned on in high temperature and high humidity environments and turned off in low temperature and low humidity environments, thus saving energy. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the compressed air solidification energy storage and power generation system of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the gas storage tank of the present invention.

[0030] Figure 3 This is a schematic diagram of the structure of the ventilation pipe filled with a flexible inflatable bladder according to the present invention.

[0031] In the diagram: 1. Air filter, 2. Air compressor, 3. Condensate tank, 4. Cooler, 5. Gas valve 1, 6. Gas valve 2, 7. Cooling dryer, 8. Gas valve 3, 9. Gas valve 4, 10. High temperature generator, 11. Gas storage tank, 12. Gas valve 5, 13. Heat exchanger, 14. Expander, 15. Liquid valve 1, 16. Liquid valve 2, 17. Liquid valve 3, 18. Liquid valve 4, 19. High temperature storage tank, 20. Low temperature storage tank, 21. Solidified gas storage material, 22. Expansion and compression device, 23. Ventilation pipe, 24. Heat exchange pipe, 25. Flexible inflatable bladder;

[0032] 11.1 Air inlet, 11.2 Air outlet, 11.3 Heat exchange fluid inlet one, 11.4 Heat exchange fluid inlet two. Detailed Implementation

[0033] The present invention will be further illustrated by the following examples.

[0034] like Figure 1 and Figure 2 As shown, a compressed air solidification energy storage and power generation system includes a storage tank 11 and an air filter 1. The storage tank 11 is provided with an air inlet 11.1, an air outlet 11.2, a heat exchange fluid inlet 11.3, and a heat exchange fluid inlet 11.4. The storage tank 11 is provided with a ventilation pipe 23 and a heat exchange pipe 24. The ventilation pipe 23 has several openings. The two ends of the ventilation pipe 23 are connected to the air inlet 11.1 and the air outlet 11.2 respectively through an expansion and compression device 22. The two ends of the heat exchange pipe 24 are connected to the heat exchange fluid inlet 11.3 and the heat exchange fluid inlet 11.4 respectively. The storage tank 11 is filled with solidified air storage material 21. The solid air storage material is granular and is fully and uniformly filled in the storage tank 11. The expansion and compression device 22 is made of a highly compressible elastic material and can be made of elastic rubber with a sleeve spring. It can adjust the expansion amount according to the filling gaps to ensure that the tank is tightly filled.

[0035] Air filter 1 is connected to the air inlet 11.1 of air tank 11 in sequence through multi-stage air compressor 2, cooling dryer 7, and air valve 4 9. Air valve 2 6 is connected to the front end of cooling dryer 7, and air valve 2 6 and cooling dryer 7 are connected in parallel with air valve 1 5.

[0036] Each stage of air compressor 2 is connected to a cooler 4 at the rear end; during the air storage stage, the heat generated by air compression can be exchanged to recover waste heat for use during the power generation stage, thereby reducing energy waste.

[0037] All coolers 4 and gas storage tank 11 are connected to low-temperature storage tank 20 and high-temperature storage tank 19 to form a heat exchange and cooling circuit: the low-temperature heat exchange liquid flowing out of the outlet of low-temperature storage tank 20 is simultaneously sent to all coolers 4 and gas storage tank 11 and then enters high-temperature storage tank 19.

[0038] The low-temperature heat exchange fluid of the low-temperature storage tank 20 enters the gas storage tank 11 from the heat exchange fluid interface 11.3, flows through the heat exchange pipe 24 and then flows out of the gas storage tank 11 through the heat exchange fluid interface 21.4, and finally enters the high-temperature storage tank 19. The outlet of the low-temperature storage tank 20 is connected to the heat exchange fluid interface 11.3 by a liquid valve 26, and the inlet of the high-temperature storage tank 19 is connected to the heat exchange fluid interface 21.4 by a liquid valve 15.

[0039] The gas outlet 11.2 of the gas storage tank 11 is connected to a multi-stage expander 14, and a heat exchanger 13 is connected to the front end of each expander 14.

[0040] All heat exchangers 13 and gas storage tank 11 are connected to low-temperature storage tank 20 and high-temperature storage tank 19 to form a heat exchange and heating circuit: the high-temperature heat exchange liquid flowing out of the outlet of high-temperature storage tank 19 is simultaneously sent to all heat exchangers 13 and gas storage tank 11 and then enters low-temperature storage tank 20; the low-temperature heat exchange liquid is used for the next gas storage stage.

[0041] The high-temperature heat exchange fluid of the high-temperature storage tank 19 enters the gas storage tank 11 through the heat exchange fluid interface 2 11.4, flows through the heat exchange pipe 24, and then flows out of the gas storage tank 11 through the heat exchange fluid interface 1 11.3, and finally enters the low-temperature storage tank 20. A liquid valve 3 17 is connected between the outlet of the high-temperature storage tank 19 and the heat exchange fluid interface 2 11.4, and a liquid valve 4 18 is connected between the inlet of the low-temperature storage tank 20 and the heat exchange fluid interface 1 11.3.

[0042] By adjusting the opening and closing of each valve, different operating states of the system can be adjusted.

[0043] After a period of use, the solidified gas storage material 21 will absorb a certain amount of moisture, thus affecting its gas storage performance. To ensure its gas storage performance, further measures are needed, such as... Figures 1 to 3As shown, gas valve 49 is connected in parallel with gas valve 38 and high-temperature generator 10. A flexible inflatable bladder 25 is detachably connected to the middle of the ventilation pipe 23. A branch is provided between the gas storage tank 11 and the heat exchanger 13. A gas valve 512 is connected to the branch. The high-temperature generator 10 generates high-temperature dry gas. The flexible inflatable bladder 25 forms a blockage on the ventilation pipe 23, so that the high-temperature dry gas enters the gas storage tank 11 through the opening at one end of the flexible inflatable bladder 25 on the ventilation pipe 23 to dry the solidified gas storage material 21. The moisture is carried away and discharged from the gas storage tank 11 through the opening at the other end of the flexible inflatable bladder 25 on the ventilation pipe 23.

[0044] To fully utilize the ventilation pipe 23 for gas storage, the ventilation pipe 23 is further designed as a cylindrical tube with unevenly distributed openings, becoming denser closer to the outlet port 11.2. This ensures that compressed gas flows from the ventilation pipe 23 to the solidified gas storage material 21 outside the ventilation pipe 23 at the same flow rate, achieving a uniform curing rate in the horizontal direction.

[0045] Furthermore, all coolers 4 and cooling dryers 7 are connected to condensate tanks 3.

[0046] A method of using a compressed air solidification energy storage and power generation system includes:

[0047] Gas storage stage:

[0048] Atmospheric air is filtered by air filter 1 to remove dust, oil, rust, moisture, and other substances. The filtered gas is then compressed by multi-stage air compressor 2, which raises the temperature and releases heat. Liquid valves 15 and 16 are opened, while liquid valves 17 and 18 are closed. The low-temperature heat exchange liquid in low-temperature storage tank 20 flows through cooler 4 and then into high-temperature storage tank 19, recovering the heat generated during gas compression. The low-temperature heat exchange liquid in low-temperature storage tank 20 flows through gas storage tank 11 and then into high-temperature storage tank 19, where it cools the gas storage tank 11, increasing the solidification capacity and recovering the heat generated during the solidification process.

[0049] During summer operation, the air is a high-temperature and high-humidity gas. Open gas circuit valve 26 and gas circuit valve 49, close gas circuit valve 15 and gas circuit valve 38. The high-pressure gas after being compressed by the multi-stage compressor is cooled and dried by the cooling dryer 7 and then enters the gas storage tank 11 through the air inlet 11.1.

[0050] During winter operation, the air is cold and humid. Open gas valve 1 (5) and gas valve 4 (9), and close gas valve 2 (6) and gas valve 3 (8). The high-pressure gas compressed by the multi-stage compressor enters the gas storage tank 11 directly through the air inlet 11.1.

[0051] During the gas release and power generation stage: As compressed air expands and performs work, its temperature drops and it needs to absorb heat. Liquid valves 17 (third) and 18 (fourth) are opened, while liquid valves 15 (first) and 16 (second) are closed. The high-temperature heat exchange liquid in the high-temperature storage tank 19 flows through the gas storage tank 11 to the low-temperature storage tank 20. The high-temperature heat exchange liquid heats the gas storage tank 11, increasing its expansion energy. The high-temperature heat exchange liquid in the high-temperature storage tank 19 then flows through the heat exchanger 13 for further heating, further increasing the gas expansion energy. The cooled high-temperature heat exchange liquid then flows into the low-temperature storage tank 20. The high-pressure, high-temperature gas drives the expander 14 to perform work, which in turn drives the generator to generate electricity.

[0052] Furthermore, after the gas storage and power generation system of the present invention has been running for a certain period of time (about one month), a certain amount of moisture will accumulate in the solidified gas storage material 21, which will affect the gas storage efficiency, and the inside of the gas storage tank 11 needs to be dried.

[0053] Open gas valve 3 (8) and close gas valve 4 (9). The temperature of the drying gas is raised by the high-temperature generator 10. Insert a flexible inflatable bladder 25 into the ventilation pipe 23 and seal the opening in the middle area of ​​the ventilation pipe 23, leaving only the upper and lower ventilation holes open. The drying gas flows fully through the air inlet 11.1 of the gas storage tank 11 and the ventilation pipe 23, solidifying the gas storage material 21 inside the gas storage tank 11. Then, the drying gas carrying moisture flows out of the gas storage tank 11 from the air outlet 11.2. Open gas valve 5 (12). The high-temperature drying gas passes through the gas storage tank 11, dries the solidified gas storage material 21, and is then directly discharged into the atmosphere.

Claims

1. A compressed air solidification energy storage and power generation system, comprising an air storage tank (11) and an air filter (1), characterized in that, The gas storage tank (11) is provided with an air inlet (11.1), an air outlet (11.2), a heat exchange fluid inlet 1 (11.3), and a heat exchange fluid inlet 2 (11.4). The gas storage tank (11) is provided with a ventilation pipe (23) and a heat exchange pipe (24). The ventilation pipe (23) is provided with several openings. The two ends of the ventilation pipe (23) are connected to the air inlet (11.1) and the air outlet (11.2) respectively through an expansion and compression device (22). The two ends of the heat exchange pipe (24) are connected to the heat exchange fluid inlet 1 (11.3) and the heat exchange fluid inlet 2 (11.4) respectively. The gas storage tank (11) is filled with solidified gas storage material (21). The air filter (1) is connected to the air inlet (11.1) of the air storage tank (11) in sequence through the multi-stage air compressor (2), the cooling dryer (7), and the fourth air valve (9). The front end of the cooling dryer (7) is connected to the second air valve (6). The second air valve (6) and the cooling dryer (7) are connected in parallel to the first air valve (5). Each stage of the air compressor (2) is connected to a cooler (4) at its rear end; All coolers (4) and gas storage tanks (11) are connected to low-temperature storage tank (20) and high-temperature storage tank (19) to form a heat exchange and cooling circuit: the low-temperature heat exchange liquid flowing out of the outlet of the low-temperature storage tank (20) is simultaneously sent to all coolers (4) and gas storage tanks (11) and then enters the high-temperature storage tank (19). The low-temperature heat exchange fluid of the low-temperature storage tank (20) enters the gas storage tank (11) through the heat exchange fluid interface one (11.3), flows through the heat exchange pipe (24) and then flows out of the gas storage tank (11) through the heat exchange fluid interface two (11.4), and finally enters the high-temperature storage tank (19). The outlet of the low-temperature storage tank (20) is connected to the heat exchange fluid interface one (11.3) by a liquid valve two (16), and the inlet of the high-temperature storage tank (19) is connected to the heat exchange fluid interface two (11.4) by a liquid valve one (15). The outlet port (11.2) of the gas storage tank (11) is connected to a multi-stage expander (14), and a heat exchanger (13) is connected to the front end of each expander (14). All heat exchangers (13) and gas storage tanks (11) are connected to low-temperature storage tank (20) and high-temperature storage tank (19) to form a heat exchange and heating circuit: the high-temperature heat exchange liquid flowing out of the outlet of the high-temperature storage tank (19) is simultaneously sent to all heat exchangers (13) and gas storage tanks (11) and then enters the low-temperature storage tank (20). The high-temperature heat exchange liquid of the high-temperature storage tank (19) enters the gas storage tank (11) through the heat exchange liquid interface two (11.4), flows through the heat exchange pipe (24), and then flows out of the gas storage tank (11) through the heat exchange liquid interface one (11.3), and finally enters the low-temperature storage tank (20). The outlet of the high-temperature storage tank (19) is connected to the heat exchange liquid interface two (11.4) by a liquid valve three (17), and the inlet of the low-temperature storage tank (20) is connected to the heat exchange liquid interface one (11.3) by a liquid valve four (18).

2. The compressed air solidification energy storage and power generation system according to claim 1, characterized in that, Gas valve four (9) is connected in parallel with gas valve three (8) and high temperature generator (10). A flexible air bladder (25) is detachably connected in the middle of the gas pipe (23). A branch is provided between the gas storage tank (11) and the heat exchanger (13), and gas valve five (12) is connected on the branch.

3. A compressed air solidification energy storage and power generation system according to claim 1 or 2, characterized in that, The ventilation pipe (23) is a cylindrical tube with unevenly distributed openings. The openings are denser closer to the air outlet (11.2).

4. A compressed air solidification energy storage and power generation system according to claim 1 or 2, characterized in that, All coolers (4) and cooling dryers (7) are connected to condensate tanks (3).

5. A method of using the compressed air solidification energy storage and power generation system according to any one of claims 1-4, characterized in that, include: Gas storage stage: The air in the atmosphere is filtered by the air filter (1), and the filtered gas is compressed by the multi-stage air compressor (2). The temperature will rise and heat will be released. The liquid valve one (15) and liquid valve two (16) are opened, and the liquid valve three (17) and liquid valve four (18) are closed. The low temperature heat exchange liquid in the low temperature storage tank (20) flows through the cooler (4) for cooling and then flows into the high temperature storage tank (19) to recover the heat generated during the gas compression process. The low temperature heat exchange liquid in the low temperature storage tank (20) flows through the gas storage tank (11) and then to the high temperature storage tank (19). The low temperature heat exchange liquid cools the gas storage tank (11) to increase the solidification storage capacity and recover the heat generated during the solidification process. During summer operation, the air is a high temperature and high humidity gas. Open the gas path valve 2 (6) and gas path valve 4 (9), and close the gas path valve 1 (5) and gas path valve 3 (8). The high pressure gas after being compressed by the multi-stage compressor is cooled and dried by the cooling dryer (7) and then enters the gas storage tank (11) through the air inlet (11.1). During winter operation, the air is cold and humid. Open gas valve 1 (5) and gas valve 4 (9), and close gas valve 2 (6) and gas valve 3 (8). The high-pressure gas compressed by the multi-stage compressor enters the gas storage tank (11) directly through the air inlet (11.1). Gas release and power generation stage: During the expansion and work of compressed air, the temperature will drop and heat needs to be absorbed. Open the liquid circuit valve three (17) and liquid circuit valve four (18), and close the liquid circuit valve one (15) and liquid circuit valve two (16). The high temperature heat exchange liquid in the high temperature storage tank (19) flows through the gas storage tank (11) to the low temperature storage tank (20). The high temperature heat exchange liquid heats the gas storage tank (11) and increases the gas expansion energy. The high temperature heat exchange liquid in the high temperature storage tank (19) flows through the heat exchanger (13) for heating, further increasing the gas expansion energy. Then the cooled high temperature heat exchange liquid flows into the low temperature storage tank (20). The high pressure and high temperature gas drives the expander (14) to do work and drive the generator to generate electricity.

6. The method of using the compressed air solidification energy storage and power generation system according to claim 5, characterized in that, After the system has been running for a certain period of time for gas storage and power generation, open gas valve three (8) and close gas valve four (9). The temperature of the dry gas is raised by the high-temperature generator (10). Insert a flexible inflatable bag (25) into the ventilation pipe (23) and close the opening in the middle area of ​​the ventilation pipe (23), leaving only the upper and lower ventilation holes. The dry gas flows through the gas inlet (11.1) and ventilation pipe (23) of the gas storage tank (11) to solidify the gas storage material (21). Then the dry gas carries moisture and flows out of the gas storage tank (11) from the gas outlet (11.2). Open gas valve five (12). The high-temperature dry gas passes through the gas storage tank (11) and dries the solidified gas storage material (21) before being discharged directly into the atmosphere.

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