Hydrogen fracturing apparatus and method for recycling hydrogen

Abstract

This invention discloses a hydrogen fracturing apparatus and a method for the recycling and utilization of hydrogen. [Solution] The hydrogen fracturing apparatus according to the present invention includes a hydrogen fracturing furnace, a solid hydrogen storage facility, a first hydrogen recovery line, a second hydrogen recovery line, a hydrogen reuse line, a first exhaust pipe, a second exhaust pipe, an inert gas line, and bypass piping. By reusing the hydrogen gas used in hydrogen fracturing, the hydrogen fracturing apparatus can reduce hydrogen fracturing costs and minimize energy waste.

Description

Technical Field

[0001] The present invention relates to a hydrogen crushing apparatus and a hydrogen recycling method.

Background Art

[0002] Hydrogen crushing utilizes the difference in hydrogen absorption rate between the Nd2Fe 17 B phase and the Nd-rich phase to generate stress at the interface between the Nd2Fe 17 B phase and the Nd-rich phase, thereby forming fine cracks. These fine cracks facilitate crushing of neodymium iron boron sheets into a desired particle size range when crushed by a jet mill. Hydrogen crushing is an important process in magnet manufacturing and contributes to improving the magnetic properties of magnets. Hydrogen crushing mainly includes two steps: hydrogen absorption and hydrogen desorption. In the hydrogen desorption step, hydrogen gas is released into the atmosphere, which leads to a large amount of energy waste.

[0003] CN117051432A discloses an integrated control system for water electrolysis hydrogen generation and alloy-based hydrogen storage, which comprises a water electrolysis hydrogen generation unit and an ultrasonic flaw detector. The water electrolysis hydrogen generation unit is communicated with a first hydrogen gas pipe, an explosion-proof can is communicated with the first hydrogen gas pipe, a second hydrogen gas pipe is communicated with the side of the explosion-proof can away from the first hydrogen gas pipe, a hydrogen storage can is connected to the end of the second hydrogen gas pipe away from the explosion-proof can, the hydrogen storage can is filled with a hydrogen storage alloy, the explosion-proof can is provided with a current cathode protection unit, the positive electrode of the current cathode protection unit is grounded, and an ultrasonic leak detector is mounted on the explosion-proof can. This apparatus is used for storing hydrogen generated by water electrolysis.

[0004] CN119146347A discloses a high-pressure hydrogen filling system for impact testing specimens of metallic materials, the system comprising a specimen hydrogen filling vessel, a high-pressure recovery vessel, a low-pressure recovery vessel, an exhaust gas tank, a first manual valve, a second manual valve, a third manual valve, a fourth manual valve, a pressure reducing valve, a fifth manual valve, a sixth manual valve, a seventh manual valve, a pressure monitoring device, and a hydrogen gas purity monitoring device, all interconnected by a process line, wherein the first manual valve, the exhaust gas tank, the second manual valve, the third manual valve, the specimen hydrogen filling vessel, and the fourth manual valve are connected in this order, and the fifth manual valve, the low-pressure recovery vessel, the sixth manual valve, the seventh manual valve, and the high-pressure recovery vessel are connected in this order, the pressure reducing valve is spanned between the second and sixth manual valves, the pressure detection device is used to detect the pressure in the system, and the hydrogen purity monitoring device is used to monitor the hydrogen purity in the line. This system recovers hydrogen using a high-pressure recovery vessel and a low-pressure recovery vessel, and is large in volume and has low safety. [Overview of the Initiative]

[0005] In view of this, one object of the present invention is to provide a hydrogen fracturing apparatus that enables the reuse of hydrogen gas used in the hydrogen fracturing process, thereby reducing the cost of hydrogen fracturing and minimizing energy waste. Furthermore, the hydrogen fracturing apparatus according to the present invention is highly safe. Another object of the present invention is to provide a method for recycling hydrogen gas using the above-described hydrogen fracturing apparatus.

[0006] The present invention achieves the above objective with the following configuration.

[0007] In one embodiment, the present invention relates to a hydrogen fracturing apparatus comprising a hydrogen fracturing furnace, a solid hydrogen storage facility, a first hydrogen recovery line, a second hydrogen recovery line, a hydrogen reuse line, a first exhaust pipe, a second exhaust pipe, an inert gas line, and bypass piping, The hydrogen crushing furnace is provided with a hydrogen crushing furnace port, and the hydrogen crushing furnace port is arranged to allow gas to enter the hydrogen crushing furnace or to discharge gas from the hydrogen crushing furnace. The solid hydrogen storage facility is provided with a solid hydrogen storage facility inlet, and the solid hydrogen storage facility inlet is arranged to allow hydrogen gas to enter the solid hydrogen storage facility or to discharge it from the solid hydrogen storage facility. The first hydrogen recovery line comprises a first end and a second end that are separated from each other, the first end of the first hydrogen recovery line being connected to the hydrogen crushing furnace port, and the second end of the first hydrogen recovery line being connected to the solid hydrogen storage facility port. The inert gas line comprises a first end and a second end that are separated from each other, the first end of the inert gas line being connected to the first hydrogen recovery line, and the second end of the inert gas line being used to connect to an inert gas supply facility. The first exhaust pipe has a first end and a second end that are separated from each other, the first end of the first exhaust pipe is connected to the first hydrogen recovery line, and the second end of the first exhaust pipe is a free end. The second hydrogen recovery line has a first end and a second end that are separated from each other, the first end of the second hydrogen recovery line is connected to the first hydrogen recovery line, the second end of the second hydrogen recovery line is connected to the first hydrogen recovery line, and the point where the first end of the second hydrogen recovery line and the first hydrogen recovery line intersect is located between the first end of the first hydrogen recovery line and the point where the second end of the second hydrogen recovery line and the first hydrogen recovery line intersect, and the second hydrogen recovery line is provided with a Roots pump and a screw pump in order along the direction from the first end to the second end. The second exhaust pipe has a first end and a second end that are separated from each other, the first end of the second exhaust pipe is connected to the second hydrogen recovery line located between the screw pump and the second end of the second hydrogen recovery line, and the second end of the second exhaust pipe is a free end. The first end of the bypass piping is connected to the screw pump and the second hydrogen recovery line located between the first end of the second exhaust pipe and the second hydrogen recovery line, the second end of the bypass piping is connected to the second exhaust pipe, and a vacuum pump is provided in the bypass piping, the vacuum pump is arranged to discharge gas present in at least a portion of the second hydrogen recovery line and the second exhaust pipe. The present invention provides a hydrogen fracturing apparatus in which one end of the hydrogen reuse line is connected to the opening of the hydrogen fracturing furnace, the other end of the hydrogen reuse line is connected to the opening of the solid hydrogen storage facility, and the hydrogen reuse line is arranged to transport hydrogen gas from the solid hydrogen storage facility to the hydrogen fracturing furnace.

[0008] In the hydrogen fracturing apparatus according to the present invention, preferably, the first hydrogen recovery line is provided with a first valve, a first pressure detection device, a flow meter, and a fourth valve in order along the direction from the first end to the second end. The first valve is located near the opening of the hydrogen fracture furnace, The first pressure detection equipment is arranged to detect the pressure inside the hydrogen crushing furnace. The flow meter is positioned to statistically measure the amount of hydrogen gas passing through the line between the hydrogen crushing furnace and the solid hydrogen storage facility. The fourth valve is positioned to control the flow of gas from the first hydrogen recovery line to the solid hydrogen storage facility.

[0009] In the hydrogen fracturing apparatus according to the present invention, preferably, the first hydrogen recovery line is further provided with a second valve, the second valve being positioned between the first pressure detection equipment and the flow meter. The first end of the second hydrogen recovery line is connected to the first hydrogen recovery line located between the first pressure detection equipment and the second valve, and the second end of the second hydrogen recovery line is connected to the first hydrogen recovery line located between the second valve and the flow meter. The second hydrogen recovery line is equipped with a fifth valve and a sixth valve. The fifth valve is positioned between the first end of the second hydrogen recovery line and the Roots pump. The sixth valve is positioned between the screw pump and the second end of the second hydrogen recovery line.

[0010] According to the hydrogen fracturing apparatus of the present invention, preferably, the hydrogen reuse line includes a first hydrogen reuse line and a second hydrogen reuse line. The first end of the first hydrogen reuse line is connected to the first hydrogen recovery line located between the second valve and the flow meter, and the second end of the first hydrogen reuse line is connected to the solid hydrogen storage facility port. The first end of the second hydrogen reuse line is connected to the first hydrogen recovery line located between the first pressure detection equipment and the second valve, and the second end of the second hydrogen reuse line is connected to the first hydrogen recovery line located between the flow meter and the fourth valve.

[0011] In the hydrogen fracturing apparatus according to the present invention, preferably, the first end of the second exhaust pipe is connected to a second hydrogen recovery line located between the screw pump and the sixth valve. The second exhaust pipe is provided with a tenth valve, The second end of the bypass piping is connected to the second exhaust pipe located between the tenth valve and the second end of the second exhaust pipe. The bypass piping is provided with an 11th valve, which is located between the vacuum pump and the first end of the bypass piping.

[0012] In the hydrogen fracturing apparatus according to the present invention, preferably, the first hydrogen reuse line is provided with a seventh valve, a pressure reducing valve, and a second pressure detection device in order along the direction from the first end to the second end. The pressure reducing valve is positioned to reduce the pressure of hydrogen gas released from the solid hydrogen storage facility. The second pressure detection device is arranged to detect the pressure inside the solid hydrogen storage facility. The second hydrogen reuse line is provided with an eighth valve, which is positioned close to the first end of the second hydrogen reuse line.

[0013] According to the hydrogen fracturing apparatus of the present invention, preferably the hydrogen fracturing apparatus further includes an external hydrogen gas line, The external hydrogen gas line comprises a first end and a second end that are separated from each other, the first end of the external hydrogen gas line is connected to a second hydrogen reuse line located between the eighth valve and the second end of the second hydrogen reuse line, and the second end of the external hydrogen gas line is used to connect to a hydrogen gas supply facility. The second hydrogen reuse line is provided with a ninth valve, which is positioned between the point where the first end of the external hydrogen gas line and the second hydrogen reuse line intersect and the second end of the second hydrogen reuse line.

[0014] According to the hydrogen fracturing apparatus of the present invention, preferably, the first end of the inert gas line is connected to the first pressure detection equipment and to a first hydrogen recovery line located between the first end of the second hydrogen recovery line and the point where the first hydrogen recovery line intersects, and a 14th valve is provided in the inert gas line. A 13th valve is provided in the aforementioned external hydrogen gas line.

[0015] The hydrogen fracturing apparatus according to the present invention preferably further includes a liquid heat exchange facility, and the solid hydrogen storage facility is further provided with a circulating liquid inlet and a circulating liquid outlet. The aforementioned liquid heat exchange equipment includes a first storage tank, a second storage tank, a heat exchanger, a first liquid import pipe, a second liquid import pipe, a liquid export pipe, a first connection line, and a second connection line. The second storage tank is arranged to store a heat-absorbing liquid, and the second storage tank has a second storage tank inlet and a second storage tank outlet. The heat exchanger is provided with a heat source inlet, a cold source inlet, a cold source outlet and a heat source outlet, the cold source inlet is arranged to allow external cooling liquid to enter the heat exchanger, the heat source inlet is arranged to allow the endothermic liquid that has absorbed heat in the solid hydrogen storage facility to enter the heat exchanger, the heat source outlet is arranged to discharge the endothermic liquid that has undergone heat exchange inside the heat exchanger out of the heat exchanger, and the cold source outlet is arranged to discharge the cooling liquid that has undergone heat exchange out of the heat exchanger, The first liquid inlet pipe is provided with a first end and a second end that are spaced apart from each other, the first end of the first liquid inlet pipe is connected to the circulating liquid inlet, and the second end of the first liquid inlet pipe is connected to the outlet of the second storage tank, The second liquid inlet pipe is provided with a first end and a second end that are spaced apart from each other, the first end of the second liquid inlet pipe is connected to the inlet of the second storage tank, and the second end of the second liquid inlet pipe is connected to the heat source outlet of the heat exchanger, The liquid outlet pipe is provided with a first end and a second end that are spaced apart from each other, the first end of the liquid outlet pipe is connected to the circulating liquid outlet, and the second end of the liquid outlet pipe is connected to the heat source inlet of the heat exchanger, The first storage tank includes a first storage tank body and a heating facility, the first storage tank body is arranged to store the heat supply liquid, the first storage tank body is provided with a first storage tank inlet and a first storage tank outlet, and the heating facility is arranged to heat the heat supply liquid inside the first storage tank body, The first connection line is provided with a first end and a second end that are spaced apart from each other, the first end of the first connection line is connected to the outlet of the first storage tank, and the second end of the first connection line is connected to the first liquid inlet pipe, The second connection line is provided with a first end and a second end that are spaced apart from each other, the first end of the second connection line is connected to the inlet of the first storage tank, and the second end of the second connection line is connected to the liquid outlet pipe.

[0016] In another aspect, the present invention relates to With the hydrogen crushing material placed in the hydrogen crushing furnace, the 14th valve and the 1st valve are opened, an inert gas is introduced into the hydrogen crushing furnace through the inert gas pipeline, and when the pressure in the hydrogen crushing furnace reaches P+10 to P+30 kPa, the 14th valve is closed to stop the inert gas filling, and the first pressure detection device is used to determine whether there is any gas leakage in the hydrogen crushing furnace, If there is no gas leakage, the 12th valve is opened to discharge the gas in the hydrogen crushing furnace through the first hydrogen recovery line and the first exhaust pipe, and when the pressure in the hydrogen crushing furnace reaches P, the 12th valve is closed, then the 5th valve, the Roots pump, the screw pump and the 10th valve are opened, and the residual gas in the hydrogen crushing furnace is discharged through the second exhaust pipe until the pressure in the hydrogen crushing furnace is ≤1.5 Pa, closing the 5th valve, the Roots pump, the screw pump and the 10th valve, opening the 11th valve and the vacuum pump to discharge the gas in the second hydrogen recovery line located between the screw pump and the 6th valve and the gas in the second exhaust pipe, and then closing the 11th valve and the vacuum pump, which is step (1), The 7th valve, the 3rd valve, the 9th valve, the 8th valve and the 1st valve are opened, and the hydrogen gas released from the solid hydrogen storage facility is introduced into the hydrogen crushing furnace through the first hydrogen reuse line, the first hydrogen recovery line where the flow meter is located, the second hydrogen reuse line and the first hydrogen recovery line where the 1st valve is located, The first pressure detection device is used to detect the pressure in the hydrogen crushing furnace, when the pressure in the hydrogen crushing furnace is ≥ P+80 kPa, the 8th valve is closed to stop filling hydrogen gas into the hydrogen crushing furnace, and when the pressure in the hydrogen crushing furnace is ≤ P+75 kPa, the 8th valve is opened to fill hydrogen gas into the hydrogen crushing furnace, and this operation is repeated until the pressure in the hydrogen crushing furnace stabilizes at P+50 to P+120 kPa to complete the hydrogen filling process, which is step (2), After the hydrogen absorption process of the hydrogen crushing material is completed, the 2nd valve, the 3rd valve and the 4th valve are opened, the hydrogen gas in the hydrogen crushing furnace is introduced into the solid hydrogen storage facility through the first hydrogen recovery line, and when the pressure detected by the first pressure detection device reaches ≤ P+30 kPa, the 2nd valve, the 3rd valve and the 4th valve are closed, and the hydrogen crushing furnace is heated at the same time, Step (3) is to open the fifth valve, the Roots pump, the screw pump, the sixth valve, the third valve, and the fourth valve when the temperature inside the hydrogen crushing furnace reaches 400-700°C, allowing hydrogen gas to enter the solid hydrogen storage facility through the first hydrogen recovery line where the first valve is located, the second hydrogen recovery line, and the first hydrogen recovery line where the third valve and the fourth valve are located, and after 5-10 hours, stop heating the hydrogen crushing furnace, close the first valve, the fifth valve, the Roots pump, the screw pump, the sixth valve, the third valve, and the fourth valve, and stop hydrogen gas recovery. Step (4): After hydrogen gas recovery is stopped, the 14th valve and the 1st valve are opened to allow inert gas to enter the hydrogen fracturing furnace through the inert gas line. When the pressure inside the hydrogen fracturing furnace detected by the 1st pressure sensor reaches P+10 to P+30 kPa, the 14th valve is closed. As the hydrogen fracturing material inside the hydrogen fracturing furnace cools, the pressure inside the hydrogen fracturing furnace decreases. When the pressure inside the hydrogen fracturing furnace falls to ≤ P, the 14th air-operated valve is activated, and inert gas is introduced into the hydrogen fracturing furnace to maintain the pressure inside the hydrogen fracturing furnace at P to P+30 kPa until the hydrogen fracturing material inside the hydrogen fracturing furnace cools to ambient temperature. (However, P represents atmospheric pressure.) The present invention provides a method for the recycling and utilization of hydrogen using the above-described hydrogen fracturing apparatus.

[0017] The hydrogen fracturing apparatus according to the present invention can reuse the hydrogen gas used in hydrogen fracturing, thereby reducing hydrogen fracturing costs and minimizing energy waste. Furthermore, the hydrogen fracturing apparatus according to the present invention is highly safe. [Brief explanation of the drawing]

[0018] [Figure 1] Figure 1 is a schematic diagram of the structure of a hydrogen fracturing apparatus according to one embodiment of the present invention. [Modes for carrying out the invention]

[0019] The present invention will be further described below based on specific embodiments, but the technical scope of the present invention is not limited thereto.

[0020] In this invention, "high pressure" means a pressure higher than atmospheric pressure.

[0021] In this invention, "low pressure" means a pressure that is lower than or equal to atmospheric pressure.

[0022] <Hydrogen Destruction Equipment> The hydrogen fracturing apparatus according to the present invention includes a hydrogen fracturing furnace, a solid hydrogen storage facility, a first hydrogen recovery line, a second hydrogen recovery line, a hydrogen reuse line, a first exhaust pipe, a second exhaust pipe, an inert gas line, and bypass piping. In some embodiments, it further includes one or more of an external hydrogen gas line and a liquid heat exchange facility. The configuration of each component will be described in detail below.

[0023] Hydrogen fracturing reactor The hydrogen fracturing furnace according to the present invention is provided with a hydrogen fracturing furnace port. The hydrogen fracturing furnace port is arranged to allow gas to enter the hydrogen fracturing furnace or to discharge gas from the hydrogen fracturing furnace. The hydrogen fracturing furnace port may be located at the top of the hydrogen fracturing furnace.

[0024] Solid hydrogen storage facilities The solid hydrogen storage facility according to the present invention is provided with a solid hydrogen storage facility inlet. The solid hydrogen storage facility inlet is arranged to allow hydrogen gas to enter the solid hydrogen storage facility or to discharge it from the solid hydrogen storage facility.

[0025] The solid hydrogen storage facility may also be provided with a circulating fluid inlet and a circulating fluid outlet. The circulating fluid inlet is positioned to allow the absorption liquid or heat supply liquid to enter the solid hydrogen storage facility. The circulating fluid outlet is positioned to discharge the absorption liquid or heat supply liquid from the solid hydrogen storage facility. The solid hydrogen storage facility inlet and the circulating fluid inlet may be provided on both sides of the solid hydrogen storage facility. The circulating fluid inlet and the circulating fluid outlet may be provided on the same side of the solid hydrogen storage facility.

[0026] First hydrogen recovery line The first hydrogen recovery line according to the present invention comprises a first end and a second end that are separated from each other. The first end of the first hydrogen recovery line is connected to the opening of a hydrogen crushing furnace. The second end of the first hydrogen recovery line is connected to the opening of a solid hydrogen storage facility.

[0027] The first hydrogen recovery line is equipped with a first valve, a first pressure detection device, a flow meter, and a fourth valve, arranged in order from the first end to the second end. The first hydrogen recovery line may also be equipped with a second valve and / or a third valve.

[0028] The first valve is positioned near the hydrogen fracturing furnace opening. The first valve is preferably an air-operated valve.

[0029] The first pressure detection equipment is positioned to detect the pressure inside the hydrogen fracturing furnace. Preferably, the first pressure detection equipment is a pressure sensor.

[0030] Flow meters are positioned to statistically measure the amount of hydrogen gas passing through the line between the hydrogen fracturing furnace and the solid hydrogen storage facility.

[0031] The fourth valve is positioned in close proximity to the solid hydrogen storage facility. The fourth valve is used to control the gas flow from the first hydrogen recovery line to the solid hydrogen storage facility. The fourth valve is preferably an air-operated valve.

[0032] The second valve is positioned between the first pressure detection device and the flow meter. The second valve may be positioned close to the flow meter. The second valve is preferably an air-operated valve.

[0033] The third valve is positioned between the flow meter and the fourth valve. The third valve may be positioned close to the flow meter. The third valve is preferably an air-operated valve.

[0034] Second hydrogen recovery line The second hydrogen recovery line according to the present invention comprises a first end and a second end that are separated from each other. The first end of the second hydrogen recovery line is connected to the first hydrogen recovery line, and the second end of the second hydrogen recovery line is connected to the first hydrogen recovery line, and the point where the first end of the second hydrogen recovery line and the first hydrogen recovery line intersect is located between the first end of the first hydrogen recovery line and the point where the second end of the second hydrogen recovery line and the first hydrogen recovery line intersect. The first end of the second hydrogen recovery line may be connected to the first hydrogen recovery line located between the first pressure detection equipment and the second valve. The second end of the second hydrogen recovery line may be connected to the first hydrogen recovery line located between the second valve and the flow meter.

[0035] The second hydrogen recovery line is equipped with a Roots pump and a screw pump in order from the first end to the second end. The second hydrogen recovery line may also be equipped with a fifth valve and / or a sixth valve.

[0036] The Roots pump and screw pump can be powered. The Roots pump and screw pump are positioned to introduce gas from the hydrogen fracturing furnace into the second hydrogen recovery line via the first hydrogen recovery line.

[0037] The fifth valve is located between the first end of the second hydrogen recovery line and the Roots pump. The fifth valve is positioned to control the gas flow from the first hydrogen recovery line to the second hydrogen recovery line. The fifth valve is preferably an air-operated valve.

[0038] The sixth valve is located between the screw pump and the second end of the second hydrogen recovery line. The sixth valve is positioned to control the flow of hydrogen gas from the second hydrogen recovery line to the first hydrogen recovery line. The sixth valve is preferably an air-operated valve.

[0039] First exhaust pipe The first exhaust pipe according to the present invention comprises a first end and a second end that are separated from each other. The first end of the first exhaust pipe is connected to a first hydrogen recovery line. The second end of the first exhaust pipe is a free end. The first exhaust pipe is arranged to discharge a high-pressure gas into the atmosphere. The high-pressure gas may be a mixture of an inert gas and air, for example, a mixture of argon gas and air.

[0040] The point where the first end of the first exhaust pipe intersects with the first hydrogen recovery line may be located between the point where the first end of the second hydrogen recovery line intersects with the first hydrogen recovery line and the second valve. The point where the first end of the first exhaust pipe intersects with the first hydrogen recovery line may be located between the point where the first end of the second hydrogen reuse line intersects with the first hydrogen recovery line and the second valve.

[0041] A 12th valve may be provided in the first exhaust pipe. The 12th valve may be provided in close proximity to the first end of the first exhaust pipe. The 12th valve is positioned to control the flow of gas from the first hydrogen recovery line to the first exhaust pipe. The 12th valve is preferably an air-operated valve.

[0042] Second exhaust pipe The second exhaust pipe according to the present invention comprises a first end and a second end that are separated from each other. The first end of the second exhaust pipe is connected to the second hydrogen recovery line, which is located between the screw pump and the second end of the second hydrogen recovery line. The second end of the second exhaust pipe is a free end. Preferably, the first end of the second exhaust pipe is connected to the second hydrogen recovery line, which is located between the screw pump and the sixth valve. The second exhaust pipe is arranged to discharge low-pressure gas into the atmosphere. The low-pressure gas may be a mixture of an inert gas and air, for example, a mixture of argon gas and air.

[0043] A tenth valve may be provided in the second exhaust pipe. The tenth valve may be provided in close proximity to the first end of the second exhaust pipe. The tenth valve is used to control the flow of gas from the second hydrogen recovery line to the second exhaust pipe. The tenth valve is preferably an air-operated valve.

[0044] Hydrogen recycling line One end of the hydrogen reuse line according to the present invention is connectable to the opening of a hydrogen fracturing furnace, and the other end of the hydrogen reuse line is connectable to the opening of a solid hydrogen storage facility. The hydrogen reuse line is arranged to transport hydrogen gas from the solid hydrogen storage facility to the hydrogen fracturing furnace.

[0045] In some embodiments, the hydrogen recycling line includes a first hydrogen recycling line and a second hydrogen recycling line.

[0046] The first hydrogen reuse line comprises a first end and a second end, which are separated from each other. The first end of the first hydrogen reuse line is connected to the first hydrogen recovery line, which is located between the second valve and the flow meter. The second end of the first hydrogen reuse line is connected to the solid hydrogen storage facility inlet. Specifically, the second end of the first hydrogen reuse line is connected to the first hydrogen recovery line, which is located between the solid hydrogen storage facility inlet and the fourth valve.

[0047] The first hydrogen reuse line may be equipped with a seventh valve, a pressure reducing valve, and a second pressure detection device in order along the direction from the first end to the second end.

[0048] The seventh valve is positioned to control the flow of hydrogen gas from the first hydrogen reuse line to the first hydrogen recovery line. The seventh valve is preferably an air-operated valve.

[0049] Pressure reducing valves are used to reduce the pressure of hydrogen gas released from solid hydrogen storage facilities.

[0050] The second pressure detection equipment may be installed in close proximity to the solid hydrogen storage equipment. The second pressure detection equipment is used to detect the pressure inside the solid hydrogen storage equipment. The second pressure detection equipment is preferably a pressure sensor.

[0051] The second hydrogen reuse line comprises a first end and a second end, which are separated from each other. The first end of the second hydrogen reuse line is connected to the first hydrogen recovery line, which is located between the first pressure detection equipment and the second valve. The second end of the second hydrogen reuse line is connected to the first hydrogen recovery line, which is located between the flow meter and the fourth valve. Preferably, the second end of the second hydrogen reuse line is connected to the first hydrogen recovery line, which is located between the third valve and the fourth valve.

[0052] An eighth valve may be provided in the second hydrogen reuse line. The eighth valve may be provided in close proximity to the first end of the second hydrogen reuse line. The eighth valve is positioned to control the flow of hydrogen gas from the second hydrogen reuse line to the first hydrogen recovery line. The eighth valve is preferably an air-operated valve.

[0053] A ninth valve may be provided in the second hydrogen reuse line. The ninth valve may be located between the eighth valve and the second end of the second hydrogen reuse line. The point where the first end of the external hydrogen gas line and the second hydrogen reuse line intersect may be located between the eighth valve and the ninth valve. The ninth valve is positioned to control the flow of hydrogen gas from the external hydrogen gas line toward the second end of the second hydrogen reuse line. The ninth valve is preferably an air-operated valve.

[0054] Inert gas line The inert gas line of the present invention comprises a first end and a second end that are separated from each other. The first end of the inert gas line is used to connect to a first hydrogen recovery line, and the second end of the inert gas line is used to connect to an inert gas supply facility. The inert gas line is used to transport the inert gas to a hydrogen fracturing furnace. The inert gas is preferably argon gas.

[0055] The point where the first end of the inert gas line intersects with the first hydrogen recovery line may be located between the first pressure detection equipment and the point where the first end of the second hydrogen reuse line intersects with the first hydrogen recovery line. The point where the first end of the inert gas line intersects with the first hydrogen recovery line may be located between the first pressure detection equipment and the point where the first end of the second hydrogen recovery line intersects with the first hydrogen recovery line. The second end of the inert gas line is used to connect to the inert gas supply equipment. The inert gas is preferably argon gas.

[0056] A 14th valve may be provided in the inert gas line. The 14th valve is positioned to control the flow of inert gas from the inert gas line to the first hydrogen recovery line. The 14th valve is preferably an air-operated valve.

[0057] Bypass piping The first end of the bypass piping according to the present invention is connected to the screw pump and the second hydrogen recovery line located between the first end of the second exhaust pipe and the second hydrogen recovery line. The second end of the bypass piping is connected to the second exhaust pipe. Preferably, the second end of the bypass piping is connected to the second exhaust pipe located between the second end of the second exhaust pipe and the tenth valve.

[0058] A vacuum pump is provided in the bypass piping. The vacuum pump may be located between the 11th valve and the second end of the bypass piping. The vacuum pump may also be located in the middle of the bypass piping. The vacuum pump is positioned to discharge gas present in at least a portion of the second hydrogen recovery line and the second exhaust pipe. Preferably, the vacuum pump discharges gas present in the second hydrogen recovery line and the second exhaust pipe between the screw pump and the 6th valve. After filling the hydrogen fracturing furnace with inert gas, the mixed gas consisting of inert gas and air in the hydrogen fracturing furnace is discharged via the second hydrogen recovery line and the second exhaust pipe, with some of the mixed gas remaining in the second hydrogen recovery line and the second exhaust pipe. If these mixed gases are not discharged, during the low-pressure hydrogen gas recovery process, the hydrogen gas extracted from the hydrogen fracturing furnace will mix with the mixed gas remaining in the second hydrogen recovery line and the second exhaust pipe, creating an explosion risk. These mixed gases, along with the low-pressure hydrogen gas, will enter the solid hydrogen storage facility, affecting the service life of the solid hydrogen storage facility.

[0059] A 11th valve may be provided in the bypass piping. The 11th valve may be provided close to the first end of the bypass piping. The 11th valve is used to control the flow of gas from the second hydrogen recovery line to the bypass piping. The 11th valve is preferably an air-operated valve.

[0060] External hydrogen gas line The external hydrogen gas line according to the present invention comprises a first end and a second end that are separated from each other. The first end of the external hydrogen gas line is connected to a second hydrogen reuse line located between the eighth valve and the second end of the second hydrogen reuse line. The second end of the external hydrogen gas line is used to connect to a hydrogen gas supply facility. Preferably, the first end of the external hydrogen gas line is connected to a second hydrogen reuse line located between the eighth valve and the ninth valve.

[0061] A 13th valve may be provided in the external hydrogen gas line. The 13th valve is positioned to control the flow of hydrogen gas from the external hydrogen gas line to the second hydrogen reuse line. The 13th valve is preferably an air-operated valve.

[0062] Liquid heat exchange equipment The liquid heat exchange equipment according to the present invention is arranged to provide a heat exchange liquid to a solid hydrogen storage facility. The liquid heat exchange equipment may include a first storage tank, a second storage tank, a heat exchanger, a first liquid import pipe, a second liquid import pipe, a liquid export pipe, a first connection line, and a second connection line.

[0063] The second storage tank is positioned to store a heat-absorbing liquid. A heat-absorbing liquid is a liquid at a temperature lower than the temperature of the solid hydrogen storage material in the solid hydrogen storage facility. The heat-absorbing liquid can exchange heat with the solid hydrogen storage material and carry away its thermal energy. The second storage tank is equipped with a second storage tank inlet and a second storage tank outlet. The second storage tank inlet is positioned to allow the heat-absorbing liquid to enter the second storage tank. The second storage tank outlet is positioned to discharge the heat-absorbing liquid from the second storage tank.

[0064] A heat exchanger includes a heat source inlet, a cold source inlet, a cold source outlet, and a heat source outlet.

[0065] The coolant inlet is positioned to allow external coolant to enter the heat exchanger. The external coolant may be circulating cooling water.

[0066] The heat source inlet is positioned to allow the heat-absorbing liquid, which has absorbed heat within the solid hydrogen storage facility, to enter the heat exchanger.

[0067] The heat source outlet is positioned to discharge the heat-exchanged absorbent liquid from the heat exchanger.

[0068] The coolant outlet is positioned to discharge the heat-exchanged coolant from the heat exchanger.

[0069] The heat exchanger contains an external coolant and a heat-absorbing liquid, which exchange heat to lower the temperature of the absorbed liquid. The heat-exchanged liquid is then discharged from the heat source outlet and enters the second storage tank for recycling.

[0070] The first liquid import pipe has a first end and a second end that are separated from each other. The first end of the first liquid import pipe is connected to the circulating fluid inlet. The second end of the first liquid import pipe is connected to the outlet of the second storage tank.

[0071] A third control valve may be provided in the first liquid import piping. The third control valve is positioned to control communication between the outlet of the second storage tank and the circulating fluid inlet. The third control valve may be a butterfly valve.

[0072] The first liquid import piping may be equipped with a liquid transport pump and / or a first thermometer.

[0073] The first thermometer may be installed near the circulating fluid inlet. The first thermometer is positioned to detect the temperature of the liquid in the first liquid import pipe.

[0074] A liquid transport pump may be installed between the first thermometer and the third control valve. The liquid transport pump is positioned to transport the liquid in the first liquid import piping to the solid hydrogen storage facility.

[0075] The second liquid import pipe has a first end and a second end that are separated from each other. The first end of the second liquid import pipe is connected to the inlet of the second storage tank. The second end of the second liquid import pipe is connected to the heat source outlet of the heat exchanger.

[0076] The liquid export piping has two separate ends, a first end and a second end. The first end of the liquid export piping is connected to the circulating fluid outlet. The second end of the liquid export piping is connected to the heat source inlet of the heat exchanger.

[0077] A fourth control valve may be provided in the liquid export piping. The fourth control valve is positioned to control communication between the circulating fluid outlet and the heat source inlet. The fourth control valve is preferably a butterfly valve.

[0078] A second thermometer may be provided in the liquid export piping. The second thermometer may be provided near the circulating fluid outlet. The second thermometer is positioned to detect the temperature of the liquid in the liquid export piping.

[0079] The first storage tank includes the first storage tank body and heating equipment. The first storage tank body is arranged to store a heat supply liquid. The heat supply liquid is a liquid having a temperature higher than the temperature of the solid hydrogen storage material in the solid hydrogen storage facility. The heat supply liquid can exchange heat with the solid hydrogen storage material and supply thermal energy to it. The first storage tank is provided with a first storage tank inlet and a first storage tank outlet. The heating equipment is arranged to heat the heat supply liquid in the first storage tank body.

[0080] The first connection line has a first end and a second end that are separated from each other, with the first end of the first connection line connected to the outlet of the first storage tank. The second end of the first connection line is connected to the first liquid import piping. Specifically, the second end of the first connection line is connected to the first liquid import piping located between the circulating fluid inlet and the third control valve. Preferably, the second end of the first connection line is connected to the first liquid import piping located between the liquid transport pump and the third control valve.

[0081] A first control valve may be provided in the first connection line. The first control valve is positioned to control communication between the outlet of the first storage tank and the inlet of the circulating fluid. The first control valve is preferably a butterfly valve.

[0082] The first end of the second connection line is connected to the inlet of the first storage tank. The second end of the second connection line is connected to the liquid export piping. Specifically, the second end of the second connection line is connected to the second liquid export piping located between the circulating fluid outlet and the fourth control valve. Preferably, the second end of the second connection line is connected to the second liquid export piping located between the second thermometer and the fourth control valve.

[0083] A second control valve may be provided in the second connection line. The second control valve is positioned to control communication between the first storage tank inlet and the circulating fluid outlet. The second control valve is preferably a butterfly valve.

[0084] <Methods for the recycling and reuse of hydrogen> The hydrogen recycling method using the hydrogen crushing apparatus described above according to the present invention includes an airtightness inspection step (1), a hydrogen filling step (2), a hydrogen release step (3), and an inert gas filling step (4). These will be described in detail below.

[0085] Airtightness testing steps The airtightness test step according to the present invention includes an inert gas filling step (A), a step of discharging a mixed gas (B), and a step of discharging residual mixed gas (C).

[0086] In step (A), with the hydrogen fracturing material placed inside the hydrogen fracturing furnace, the 14th valve and the 1st valve are opened, and inert gas is introduced into the hydrogen fracturing furnace through the inert gas piping. When the pressure inside the hydrogen fracturing furnace reaches P+10 to P+30 kPa, preferably P+18 to P+22 kPa, the 14th valve is closed to stop the filling of inert gas, and the presence or absence of gas leakage in the hydrogen fracturing furnace is determined using the 1st pressure detection equipment. In step (B), if there is no gas leak, the 12th valve is opened to discharge the gas in the hydrogen fracturing furnace (a mixed gas consisting of inert gas and air) through the 1st hydrogen recovery line and the 1st exhaust pipe. When the pressure in the hydrogen fracturing furnace reaches P, the 12th valve is closed, and the 5th valve, Roots pump, screw pump, and 10th valve are opened to discharge the residual gas in the hydrogen fracturing furnace through the 2nd exhaust pipe until the pressure in the hydrogen fracturing furnace is ≤ 1.5 Pa.

[0087] In step (C), the fifth valve, the Roots pump, the screw pump, and the tenth valve are closed, and the eleventh valve and the vacuum pump are opened to discharge the gas in the second hydrogen recovery line located between the screw pump and the sixth valve and the gas in the second exhaust pipe, and then the eleventh valve and the vacuum pump are closed. The opening time of the eleventh valve and the vacuum pump may be 3 to 20 minutes, preferably 5 to 10 minutes. Preferably, the vacuum pump is closed after the eleventh valve is closed.

[0088] In the above step, the inert gas may be argon gas.

[0089] In the above steps, P represents atmospheric pressure.

[0090] Hydrogen refueling step The seventh valve, the third valve, the ninth valve, the eighth valve, and the first valve are opened, allowing the hydrogen gas released from the solid hydrogen storage facility to enter the hydrogen fragmentation furnace through the first hydrogen reuse line, the first hydrogen recovery line where the flow meter is located, the second hydrogen reuse line, and the first hydrogen recovery line where the first valve is located.

[0091] The pressure inside the hydrogen crushing furnace is detected using the first pressure detection equipment. When the pressure inside the hydrogen crushing furnace is ≥ P+80kPa, preferably ≥ P+100kPa, the eighth valve is closed to stop the filling of hydrogen gas into the hydrogen crushing furnace. When the pressure inside the hydrogen crushing furnace is ≤ P+75kPa, preferably ≤ P+70kPa, the eighth valve is opened to fill the hydrogen crushing furnace with hydrogen gas. This process is repeated until the pressure inside the hydrogen crushing furnace stabilizes at P+50 to P+120kPa, preferably P+70 to P+100kPa, completing the hydrogen filling process.

[0092] In some embodiments, the following steps are further included: If, during the hydrogen filling process, the amount of hydrogen filled as measured by the flow meter is equal to the amount of hydrogen gas stored in the solid hydrogen storage facility, hydrogen is filled from an external system. Specifically, valves 9, 3, and 7 are closed, and valves 13 and 8 are opened to import hydrogen gas from the external system into the hydrogen fracturing furnace. When the pressure in the hydrogen fracturing furnace is ≥ P+80kPa, preferably ≥ P+100kPa, valve 8 is closed to stop the filling of hydrogen gas into the hydrogen fracturing furnace. When the pressure in the hydrogen fracturing furnace is ≤ P+75kPa, preferably ≤ P+70kPa, valve 8 is opened to fill the hydrogen fracturing furnace with hydrogen gas. This is repeated until the pressure in the hydrogen fracturing furnace stabilizes at P+50 to P+120kPa, preferably P+70 to P+100kPa, to complete the hydrogen filling process.

[0093] In some embodiments, the following steps are further included.

[0094] When filling a hydrogen fracturing furnace with hydrogen using a solid hydrogen storage facility, the first and second control valves are opened, and the heat supply liquid stored in the first storage tank enters the solid hydrogen storage facility via the first connection line and the first liquid import piping. Preferably, the heat supply liquid enters the solid hydrogen storage facility via the first connection line and the first liquid import piping by the action of a liquid transport pump. The heat supply liquid supplies thermal energy to the solid hydrogen storage material in the solid hydrogen storage facility, causing it to release hydrogen gas. After the heat supply is complete, the heat supply liquid is returned to the first storage tank via the liquid export piping and the second connection line. In this way, the heat supply liquid is used in a reciprocal circulation.

[0095] When filling the hydrogen fracturing furnace with hydrogen using an external system, the first and second control valves are closed to stop the transport of heat supply liquid to the solid hydrogen storage facility.

[0096] In the above steps, P represents atmospheric pressure.

[0097] Hydrogen release step After the hydrogen storage process is complete, the second, third, and fourth valves are opened to allow the hydrogen gas in the hydrogen crushing furnace to enter the solid hydrogen storage facility through the first hydrogen recovery line. When the pressure detected by the first pressure detection equipment reaches ≤ P + 30 kPa, preferably ≤ P + 20 kPa, the second, third, and fourth valves are closed, and the hydrogen crushing furnace is heated simultaneously.

[0098] When the temperature inside the hydrogen crushing furnace reaches 400-700°C, preferably 500-600°C, the fifth valve, Roots pump, screw pump, sixth valve, third valve, and fourth valve are opened to allow hydrogen gas to enter the solid hydrogen storage facility through the first hydrogen recovery line where the first valve is located, the second hydrogen recovery line, and the first hydrogen recovery line where the third valve and fourth valve are located. After 5-10 hours, preferably 7-8 hours, the heating of the hydrogen crushing furnace is stopped, and the first valve, fifth valve, Roots pump, screw pump, sixth valve, third valve, and fourth valve are closed to stop the recovery of hydrogen gas.

[0099] In some embodiments, the following steps are further included.

[0100] When recovering hydrogen gas into the solid hydrogen storage facility, the third and fourth control valves are opened, and the heat-absorbing liquid stored in the second storage tank enters the solid hydrogen storage facility via the first liquid import piping. Preferably, the heat-absorbing liquid enters the solid hydrogen storage facility via the first liquid import piping by the action of a liquid transport pump. The heat-absorbing liquid carries away the thermal energy generated when the solid hydrogen storage material in the solid hydrogen storage facility absorbs hydrogen gas, thereby lowering the temperature of the solid hydrogen storage material. After heat absorption is complete, the heat-absorbing liquid enters the heat exchanger via the liquid export piping. External coolant (e.g., cooling circulation water) enters the heat exchanger from the cold source inlet of the heat exchanger. Heat exchange takes place between the heat-absorbing liquid and the external coolant in the heat exchanger. The heat-exchanged heat-absorbing liquid is transported to the second storage tank via the second liquid import piping. In this way, the heat-absorbing liquid is used in a reciprocal circulation.

[0101] When stopping the recovery of hydrogen gas into the solid hydrogen storage facility, the third and fourth control valves are closed, and the transport of the heat-absorbing liquid to the solid hydrogen storage facility is stopped.

[0102] The total amount of hydrogen gas recovered can be measured using a flow meter.

[0103] In the above steps, P represents atmospheric pressure.

[0104] Inert gas filling step After stopping the recovery of hydrogen gas, the 14th valve and the 1st valve are opened to allow inert gas to enter the hydrogen fracturing furnace through the inert gas line. When the pressure inside the hydrogen fracturing furnace, as detected by the 1st pressure sensor, reaches P+10 to P+30 kPa, preferably P+15 to P+25 kPa, the 14th valve is closed. As the hydrogen fracturing material inside the hydrogen fracturing furnace cools, the pressure inside the hydrogen fracturing furnace decreases. When the pressure inside the hydrogen fracturing furnace falls to ≤ P, the 14th air-operated valve is activated to introduce inert gas into the hydrogen fracturing furnace and maintain the pressure inside the hydrogen fracturing furnace at P to P+30 kPa, preferably P to P+20 kPa, until the hydrogen fracturing material inside the hydrogen fracturing furnace cools to ambient temperature (e.g., 20 to 35°C).

[0105] The inert gas may be argon gas.

[0106] In the above steps, P represents atmospheric pressure.

[0107] Example 1 As shown in Figure 1, the hydrogen fracturing apparatus of this embodiment includes a hydrogen fracturing furnace 1, solid hydrogen storage equipment 2, a first hydrogen recovery line 3, a second hydrogen recovery line 4, a first exhaust pipe 5, a second exhaust pipe 6, a hydrogen reuse line, an inert gas line 8, an external hydrogen gas line 9, a bypass pipe 10, and liquid heat exchange equipment. In this embodiment, the hydrogen gas pressure in the first hydrogen recovery line 3 is greater than the hydrogen gas pressure in the second hydrogen recovery line 4. The gas pressure in the first exhaust pipe 5 is greater than the gas pressure in the second exhaust pipe 6.

[0108] The hydrogen fracturing furnace 1 is provided with a hydrogen fracturing furnace port. The hydrogen fracturing furnace port is used to allow gas to enter the hydrogen fracturing furnace 1 or to discharge gas from the hydrogen fracturing furnace 1. The hydrogen fracturing furnace port may be located at the top of the hydrogen fracturing furnace 1.

[0109] The solid hydrogen storage facility 2 is equipped with a solid hydrogen storage facility inlet, a circulating fluid inlet, and a circulating fluid outlet. The solid hydrogen storage facility inlet is used to allow hydrogen gas to enter the solid hydrogen storage facility 2 or to discharge it from the solid hydrogen storage facility 2. The circulating fluid inlet is used to allow the heat absorption liquid or heat supply liquid to enter the solid hydrogen storage facility 2. The circulating fluid outlet is used to discharge the heat absorption liquid or heat supply liquid from the solid hydrogen storage facility 2. The solid hydrogen storage facility inlet and the circulating fluid inlet are located on both sides of the solid hydrogen storage facility 2. The circulating fluid inlet and the circulating fluid outlet are located on the same side of the solid hydrogen storage facility 2.

[0110] The first hydrogen recovery line 3 has a first end and a second end that are separated from each other. The first end of the first hydrogen recovery line 3 is connected to the hydrogen crushing furnace port, and the second end of the first hydrogen recovery line 3 is connected to the solid hydrogen storage facility port. The first hydrogen recovery line 3 is equipped with a first valve 301, a first pressure detection device 302, a second valve 303, a flow meter 304, a third valve 305, and a fourth valve 306, in order from the first end to the second end.

[0111] The first valve 301 is located in close proximity to the hydrogen fracturing furnace opening. Preferably, the first valve 301 is an air-operated valve.

[0112] The first pressure detection device 302 is used to detect the pressure inside the hydrogen crushing furnace 1. The first pressure detection device 302 is preferably a pressure sensor.

[0113] The second valve 303 is located in close proximity to the flow meter 304. The second valve 303 is preferably an air-operated valve.

[0114] The flow meter 304 is used to statistically measure the amount of hydrogen gas passing through the line between the hydrogen fracturing furnace 1 and the solid hydrogen storage facility 2.

[0115] The third valve 305 is positioned in close proximity to the flow meter 304. Preferably, the third valve 305 is an air-operated valve.

[0116] The fourth valve 306 is located in close proximity to the solid hydrogen storage facility 2 and is used to control the flow of gas from the first hydrogen recovery line 3 to the solid hydrogen storage facility 2. The fourth valve 306 is preferably an air-operated valve.

[0117] The second hydrogen recovery line 4 has a first end and a second end that are separated from each other. The first end of the second hydrogen recovery line 4 is connected to the first hydrogen recovery line 3, which is located between the first pressure detection equipment 302 and the second valve 303. The second end of the second hydrogen recovery line 4 is connected to the first hydrogen recovery line 3, which is located between the second valve 303 and the flow meter 304.

[0118] The second hydrogen recovery line 4 is equipped with a fifth valve 401, a Roots pump 402, a screw pump 403, and a sixth valve 404, arranged in order from the first end to the second end.

[0119] The fifth valve 401 is used to control the flow of gas from the first hydrogen recovery line 3 to the second hydrogen recovery line 4. The fifth valve 401 is preferably an air-operated valve.

[0120] The Roots pump 402 and the screw pump 403 are used to supply power and introduce gas from the hydrogen fracturing furnace 1 to the second hydrogen recovery line 4 via the first hydrogen recovery line 3.

[0121] The sixth valve 404 is used to control the flow of hydrogen gas from the second hydrogen recovery line 4 to the first hydrogen recovery line 3. The sixth valve 404 is preferably an air-operated valve.

[0122] The hydrogen recycling line includes the first hydrogen recycling line 71 and the second hydrogen recycling line 72.

[0123] The first hydrogen reuse line 71 has a first end and a second end that are separated from each other. The first end of the first hydrogen reuse line 71 is connected to the first hydrogen recovery line 3, which is located between the second valve 303 and the flow meter 304. The second end of the first hydrogen reuse line 71 is connected to the first hydrogen recovery line 3, which is located between the fourth valve 306 and the solid hydrogen storage facility 2.

[0124] The first hydrogen reuse line 71 is equipped with a seventh valve 711, a pressure reducing valve 712, and a second pressure detection device 713, arranged in order from the first end to the second end.

[0125] The seventh valve 711 is used to control the flow of hydrogen gas from the first hydrogen reuse line 71 to the first hydrogen recovery line 3. The seventh valve 711 is preferably an air-operated valve.

[0126] The pressure reducing valve 712 is used to reduce the pressure of hydrogen gas released from the solid hydrogen storage facility 2.

[0127] The second pressure detection device 713 is positioned in close proximity to the solid hydrogen storage facility 2. The second pressure detection device 713 is used to detect the pressure inside the solid hydrogen storage facility 2. Preferably, the second pressure detection device 713 is a pressure sensor.

[0128] The second hydrogen reuse line 72 has a first end and a second end that are separated from each other. The first end of the second hydrogen reuse line 72 is connected to the first hydrogen recovery line 3, which is located between the first pressure detection equipment 302 and the second valve 303. The second end of the second hydrogen reuse line 72 is connected to the first hydrogen recovery line 3, which is located between the third valve 305 and the fourth valve 306.

[0129] The second hydrogen reuse line 72 is provided with an eighth valve 721 and a ninth valve 722, arranged in order from the first end to the second end.

[0130] The eighth valve 721 is positioned close to the first end of the second hydrogen reuse line 72. The eighth valve 721 is used to control the flow of hydrogen gas from the second hydrogen reuse line 72 to the first hydrogen recovery line 3. The eighth valve 721 is preferably an air-operated valve.

[0131] The ninth valve 722 is positioned in close proximity to the eighth valve 721. The ninth valve 722 is used to control the flow of hydrogen gas from the external hydrogen gas line 9 toward the second end of the second hydrogen reuse line 72. The ninth valve 722 is preferably an air-operated valve.

[0132] The second exhaust pipe 6 has a first end and a second end that are separated from each other. The first end of the second exhaust pipe 6 is connected to the second hydrogen recovery line 4, which is located between the screw pump 403 and the sixth valve 404. The second end of the second exhaust pipe 6 is a free end. The second exhaust pipe 6 is used to discharge low-pressure gas.

[0133] A tenth valve 601 is provided in the second exhaust pipe 6. The tenth valve 601 is positioned close to the first end of the second exhaust pipe 6. The tenth valve 601 is used to control the flow of gas from the second hydrogen recovery line 4 to the second exhaust pipe 6. Preferably, the tenth valve 601 is an air-operated valve.

[0134] The bypass pipe 10 has a first end and a second end that are separated from each other. The first end of the bypass pipe 10 is connected to the second hydrogen recovery line 4, which is located between the screw pump 403 and the first end of the second exhaust pipe 6. The second end of the bypass pipe 10 is connected to the second exhaust pipe 6, which is located between the second end of the second exhaust pipe 6 and the tenth valve 601.

[0135] The bypass piping 10 is equipped with an 11th valve 1001 and a vacuum pump 1002 in order along the direction from the first end to the second end.

[0136] The 11th valve 1001 is positioned close to the first end of the bypass piping 10. The 11th valve 1001 is used to control the flow of gas from the second hydrogen recovery line 4 to the bypass piping 10. The 11th valve 1001 is preferably an air-operated valve.

[0137] The vacuum pump 1002 is located between the 11th valve 1001 and the second end of the bypass piping 10. The vacuum pump 1002 may also be located in the middle of the bypass piping 10. The vacuum pump 1002 is used to discharge gas from the second hydrogen recovery line 4 located between the screw pump 403 and the 6th valve 404, and from the second exhaust pipe 6.

[0138] The first exhaust pipe 5 has a first end and a second end that are separated from each other. The first end of the first exhaust pipe 5 is connected to the first hydrogen recovery line 3, and the point where the two intersect is located between the point where the first end of the second hydrogen recovery line 4 intersects with the first hydrogen recovery line 3 and the second valve 303, and also between the point where the first end of the second hydrogen reuse line 72 intersects with the first hydrogen recovery line 3 and the second valve 303. The second end of the first exhaust pipe 5 is a free end.

[0139] A 12th valve 501 is provided in the first exhaust pipe 5. The 12th valve 501 is positioned close to the first end of the first exhaust pipe 5. The 12th valve 501 is used to control the flow of gas from the first hydrogen recovery line 3 to the first exhaust pipe 5. The 12th valve 501 is preferably an air-operated valve.

[0140] The external hydrogen gas line 9 has a first end and a second end that are separated from each other. The first end of the external hydrogen gas line 9 is connected to the second hydrogen reuse line 72, which is located between the eighth valve 721 and the ninth valve 722. The second end of the external hydrogen gas line 9 is used to connect to the hydrogen gas supply equipment.

[0141] A 13th valve 901 is provided in the external hydrogen gas line 9. The 13th valve 901 is used to control the flow of hydrogen gas from the external hydrogen gas line 9 to the second hydrogen reuse line 72. The 13th valve 901 is preferably an air-operated valve.

[0142] The inert gas line 8 has a first end and a second end that are separated from each other. The first end of the inert gas line 8 is connected to the first hydrogen recovery line 3, and the point where the two intersect is located between the first pressure detection equipment 302 and the point where the first end of the second hydrogen reuse line 72 intersects with the first hydrogen recovery line 3, and also between the first pressure detection equipment 302 and the point where the first end of the second hydrogen recovery line 4 intersects with the first hydrogen recovery line 3. The second end of the inert gas line 8 is used to connect to an inert gas supply equipment. The inert gas is preferably argon gas.

[0143] A 14th valve 801 is provided in the inert gas line 8. The 14th valve 801 is used to control the flow of inert gas from the inert gas line 8 to the first hydrogen recovery line 3. The 14th valve 801 is preferably an air-operated valve.

[0144] The liquid heat exchange equipment includes a second storage tank 111, a first storage tank 112, a heat exchanger 113, a first liquid import pipe 114, a second liquid import pipe 115, a liquid export pipe 116, a first connection line 117, and a second connection line 118.

[0145] The second storage tank 111 is used to store a thermal absorbent liquid and is equipped with a second storage tank inlet and a second storage tank outlet. The thermal absorbent liquid refers to a liquid having a temperature lower than the temperature of the solid hydrogen storage material in the solid hydrogen storage facility 2. The second storage tank inlet is used for the thermal absorbent liquid to enter the second storage tank 111. The second storage tank outlet is used for discharging the thermal absorbent liquid from the second storage tank 111. The second storage tank 111 may be equipped with a second storage tank liquid level gauge. The second storage tank liquid level gauge is used to detect the liquid level height in the second storage tank 111.

[0146] The heat exchanger 113 includes a heat source inlet, a cold source inlet, a cold source outlet, and a heat source outlet. The cold source inlet is used for external coolant (e.g., cooling circulating water) to enter the heat exchanger 113. The cold source outlet is used to discharge the heat-exchanged coolant from the heat exchanger 113. The heat source inlet is used for the heat-absorbing liquid absorbed in the solid hydrogen storage facility 2 to enter the heat exchanger 113. The heat source outlet is used to discharge the heat-exchanged heat-absorbing liquid from the heat exchanger 113.

[0147] The first storage tank 112 includes a first storage tank body and a heater. The first storage tank body is used to store a heat supply liquid. The heat supply liquid refers to a liquid having a temperature higher than the temperature of the solid hydrogen storage material in the solid hydrogen storage facility 2. The heater is used to heat the heat supply liquid in the first storage tank body. The first storage tank body has a first storage tank outlet and a first storage tank inlet. The first storage tank 112 may be equipped with a first storage tank liquid level gauge. The first storage tank liquid level gauge is used to detect the liquid level in the first storage tank 112.

[0148] The first liquid import pipe 114 has a first end and a second end that are separated from each other. The first end of the first liquid import pipe 114 is connected to the circulating fluid inlet. The second end of the first liquid import pipe 114 is connected to the outlet of the second storage tank.

[0149] The first liquid import pipe 114 is equipped with a first thermometer 1141, a liquid transport pump 1142, and a third control valve 1143 in order from the first end to the second end.

[0150] The first thermometer 1141 is installed near the circulating fluid inlet. The first thermometer 1141 is used to detect the temperature of the liquid in the first liquid import pipe 114.

[0151] The liquid transport pump 1142 is used to supply power and transport the liquid in the first liquid import pipe 114 to the solid hydrogen storage facility 2.

[0152] The third control valve 1143 controls communication between the outlet of the second storage tank and the inlet of the circulating fluid. The third control valve 1143 is preferably a butterfly valve.

[0153] The second liquid import pipe 115 has a first end and a second end that are separated from each other. The first end of the second liquid import pipe 115 is connected to the inlet of the second storage tank. The second end of the second liquid import pipe 115 is connected to the heat source outlet of the heat exchanger 113.

[0154] The liquid export pipe 116 has a first end and a second end that are separated from each other. The first end of the liquid export pipe 116 is connected to the circulating liquid outlet. The second end of the liquid export pipe 116 is connected to the heat source inlet of the heat exchanger 113.

[0155] The liquid export piping 116 is equipped with a second thermometer 1161 and a fourth control valve 1162 in order from the first end to the second end.

[0156] The second thermometer 1161 is installed near the circulating fluid outlet. The second thermometer 1161 is used to detect the liquid temperature in the liquid export piping 116.

[0157] The fourth control valve 1162 controls the communication between the circulating fluid outlet and the heat source inlet. The fourth control valve 1162 is preferably a butterfly valve.

[0158] The first connection line 117 has a first end and a second end that are separated from each other. The first end of the first connection line 117 is connected to the outlet of the first storage tank. The second end of the first connection line 117 is connected to the first liquid import piping 114, which is located between the liquid transport pump 1142 and the third control valve 1143.

[0159] A first control valve 1171 is provided in the first connection line 117. The first control valve 1171 controls communication between the outlet of the first storage tank and the inlet of the circulating fluid. The first control valve 1171 is preferably a butterfly valve.

[0160] The second connection line 118 has a first end and a second end that are separated from each other. The first end of the second connection line 118 is connected to the inlet of the first storage tank. The second end of the second connection line 118 is connected to the liquid export piping 116 between the second thermometer 1161 and the fourth control valve 1162.

[0161] A second control valve 1181 is provided in the second connection line 118. The second control valve 1181 controls communication between the inlet of the first storage tank and the outlet of the circulating fluid. The second control valve 1181 is preferably a butterfly valve.

[0162] Example 2 The method for recycling hydrogen under atmospheric pressure of 100 kPa using the hydrogen fracturing apparatus of Example 1 includes the following steps.

[0163] (1) A hydrogen-destroying material (e.g., neodymium iron boron magnet) was placed in the hydrogen destroyer 1, and the 14th valve 801 and the 1st valve 301 were opened to allow argon gas to enter the hydrogen destroyer 1 through the inert gas line 8. When the pressure inside the hydrogen destroyer 1 reached 120 kPa, the 14th valve 801 was closed and the filling of argon gas was stopped. The presence or absence of gas leakage in the hydrogen destroyer 1 was determined using the 1st pressure detection equipment 302.

[0164] If no gas leak was detected, the 12th valve 501 was opened. The mixed gas (consisting of argon gas and air) inside the hydrogen fracturing furnace 1 was discharged through the first hydrogen recovery line 3 and the first exhaust pipe 5. When the pressure inside the hydrogen fracturing furnace 1 reached 100 kPa, the 12th valve 501 was closed, and the 5th valve 401, Roots pump 402, screw pump 403, and 10th valve 601 were opened to discharge the residual mixed gas inside the hydrogen fracturing furnace 1 through the second exhaust pipe 6 until the pressure inside the hydrogen fracturing furnace 1 was ≤ 1.5 Pa.

[0165] The fifth valve 401, the Roots pump 402, the screw pump 403, and the tenth valve 601 were closed. The eleventh valve 1001 and the vacuum pump 1002 were opened to discharge the gas in the second hydrogen recovery line 4 located between the screw pump 403 and the sixth valve 404, and the gas in the second exhaust pipe 6. After the eleventh valve 1001 and the vacuum pump 1002 were open for 5 to 10 minutes, the eleventh valve 1001 was closed, and then the vacuum pump 1002 was closed.

[0166] (2) The first control valve 1171 and the second control valve 1181 were opened. The liquid transport pump 1142 caused the heat supply liquid stored in the first storage tank 112 to enter the solid hydrogen storage facility 2 via the first connection line 117 and the first liquid import pipe 114. The heat supply liquid supplied thermal energy to the solid hydrogen storage material in the solid hydrogen storage facility 2, causing it to release hydrogen gas. After the heat supply was complete, the heat supply liquid was returned to the first storage tank 112 via the liquid export pipe 116 and the second connection line 118. In this way, the heat supply liquid was used in a reciprocal circulation.

[0167] The seventh valve 711, the third valve 305, the ninth valve 722, the eighth valve 721, and the first valve 301 were opened, and the hydrogen gas released from the solid hydrogen storage facility 2 entered the hydrogen fracturing furnace 1 via the first hydrogen reuse line 71, the first hydrogen recovery line 3 where the flow meter 304 is located, the second hydrogen reuse line 72, and the first hydrogen recovery line 3 where the first valve 301 is located. The pressure inside the hydrogen fracturing furnace 1 was detected using the first pressure detection equipment 302. When the pressure inside the hydrogen fracturing furnace 1 was ≥ 200 kPa, the eighth valve 721 was closed, and the filling of hydrogen gas into the hydrogen fracturing furnace 1 was stopped. When the pressure inside the hydrogen fracturing furnace 1 was ≤ 170 kPa, the eighth valve 721 was activated, and hydrogen gas was filled into the hydrogen fracturing furnace 1. In this way, the operation was continued until the pressure inside the hydrogen fracturing furnace 1 stabilized at 170-200 kPa, completing the hydrogen filling process.

[0168] During the hydrogen refueling process, if the amount of hydrogen refueled measured by the flow meter 304 was equal to the amount of hydrogen gas stored in the solid hydrogen storage facility 2, hydrogen refueling was performed from an external system. Specifically, valves 722 (9th), 305 (3rd), and 711 (7th) were closed, and control valves 1171 (1st) and 2nd (2nd) were closed to stop the transport of heat supply liquid to the solid hydrogen storage facility 2. Valves 901 (13th) and 721 (8th) were opened, and hydrogen gas from the external system entered the hydrogen fracturing furnace 1. When the pressure inside the hydrogen fracturing furnace 1 was ≥ 200 kPa, valve 721 (8th) was closed. When the pressure inside the hydrogen fracturing furnace 1 was ≤ 170 kPa, valve 721 (8th) was opened. This operation was continued until the pressure inside the hydrogen fracturing furnace 1 stabilized at 170-200 kPa, completing the hydrogen refueling process.

[0169] (3) After the hydrogen storage process was completed, the third control valve 1143 and the fourth control valve 1162 were opened, and the heat-absorbing liquid stored in the second storage tank 111 was introduced into the solid hydrogen storage facility 2 via the first liquid import pipe 114 by the action of the liquid transport pump 1142. The heat-absorbing liquid carried away the thermal energy generated by the solid hydrogen storage material in the solid hydrogen storage facility 2 absorbing hydrogen gas, thereby lowering the temperature of the solid hydrogen storage material. After the heat absorption was completed, the heat-absorbing liquid was introduced into the heat exchanger 113 via the liquid export pipe 116. External cooling liquid (e.g., cooling circulation water) was introduced into the heat exchanger 113 from the cold source inlet of the heat exchanger 113. Heat exchange took place between the heat-absorbing liquid and the external cooling liquid in the heat exchanger 113. The heat-exchanged heat-absorbing liquid was transported to the second storage tank 111 via the second liquid import pipe 115. In this way, the heat-absorbing liquid was circulated back and forth.

[0170] The second valve 303, the third valve 305, and the fourth valve 306 were opened, allowing the hydrogen gas in the hydrogen crushing furnace 1 to enter the solid hydrogen storage facility 2 via the first hydrogen recovery line 3. When the pressure detected by the first pressure detection equipment 302 reached ≤ 120 kPa, the second valve 303, the third valve 305, and the fourth valve 306 were closed, and the hydrogen crushing furnace 1 was heated simultaneously. When the temperature inside the hydrogen crushing furnace 1 reached 500-600°C, the fifth valve 401, the Roots pump 402, the screw pump 403, the sixth valve 404, the third valve 305, and the fourth valve 306 were opened in sequence, allowing the hydrogen gas to enter the solid hydrogen storage facility 2 via the first hydrogen recovery line 3 where the first valve 301 is located, the second hydrogen recovery line 4, and the first hydrogen recovery line 3 where the third valve 305 and the fourth valve 306 are located. After 7-8 hours, heating of the hydrogen crushing furnace 1 was stopped. The first valve 301, the fifth valve 401, the Roots pump 402, the screw pump 403, the sixth valve 404, the third valve 305, and the fourth valve 306 were closed to stop the recovery of hydrogen gas. The third control valve 1143 and the fourth control valve 1162 were closed to stop the transport of the heat-absorbing liquid to the solid hydrogen storage facility 2. The total amount of hydrogen gas recovered was measured by the flow meter 302.

[0171] (4) After stopping the recovery of hydrogen gas, the 14th valve 801 and the 1st valve 301 were opened, and argon gas was introduced into the hydrogen fracturing furnace 1 via the inert gas line 8. When the pressure inside the hydrogen fracturing furnace 1, as detected by the 1st pressure detection equipment 302, reached 120 kPa, the 14th valve 801 was closed. As the hydrogen fracturing material inside the hydrogen fracturing furnace 1 cooled, the pressure inside the hydrogen fracturing furnace 1 decreased. When the pressure inside the hydrogen fracturing furnace 1 decreased to ≤100 kPa, the 14th valve 801 was activated, and argon gas was introduced into the hydrogen fracturing furnace 1 to maintain the pressure inside the hydrogen fracturing furnace 1 at 100-120 kPa until the hydrogen fracturing material inside the hydrogen fracturing furnace 1 cooled to ambient temperature.

[0172] The present invention is not limited to the embodiments described above, and any modifications, improvements, or substitutions that a person skilled in the art could conceive of without departing from the spirit of the invention are also included within the scope of the invention. [Explanation of Symbols]

[0173] 1…Hydrogen fracturing furnace, 2…Solid hydrogen storage equipment, 3…First hydrogen recovery line, 301…First valve, 302…First pressure detection equipment, 303…Second valve, 304…Flow meter, 305…Third valve, 306…Fourth valve, 4…Second hydrogen recovery line, 401…Fifth valve, 402…Roots pump, 403…Screw pump, 404…Sixth valve, 5…First exhaust pipe, 501…Twelfth valve, 6…Second exhaust pipe, 601…Tenth valve, 71…First hydrogen reuse line, 711…Seventh valve, 712…Depressurizing valve, 713…Second pressure detection equipment, 72…Second hydrogen reuse line, 721…Eighth valve, 722…Ninth valve Valve, 8...Inert gas line, 801...Valve 14, 9...External hydrogen gas line, 901...Valve 13, 10...Bypass piping, 1001...Valve 11, 1002...Vacuum pump, 111...Second storage tank, 112...First storage tank, 113...Heat exchanger, 114...First liquid import piping, 1141...First thermometer, 1142...Liquid transport pump, 1143...Third control valve, 115...Second liquid import piping, 116...Liquid export piping, 1161...Second thermometer, 1162...Fourth control valve, 117...First connection line, 1171...First control valve, 118...Second connection line, 1181...Second control valve.

Claims

1. A hydrogen fracturing apparatus including a hydrogen fracturing furnace, solid hydrogen storage equipment, a first hydrogen recovery line, a second hydrogen recovery line, a hydrogen reuse line, a first exhaust pipe, a second exhaust pipe, an inert gas line, and bypass piping, The hydrogen crushing furnace is provided with a hydrogen crushing furnace port, and the hydrogen crushing furnace port is arranged to allow gas to enter the hydrogen crushing furnace or to discharge gas from the hydrogen crushing furnace. The solid hydrogen storage facility is provided with a solid hydrogen storage facility inlet, and the solid hydrogen storage facility inlet is arranged to allow hydrogen gas to enter the solid hydrogen storage facility or to discharge it from the solid hydrogen storage facility. The first hydrogen recovery line comprises a first end and a second end that are separated from each other, the first end of the first hydrogen recovery line being connected to the hydrogen crushing furnace port, and the second end of the first hydrogen recovery line being connected to the solid hydrogen storage facility port. The inert gas line comprises a first end and a second end that are separated from each other, the first end of the inert gas line being connected to the first hydrogen recovery line, and the second end of the inert gas line being used to connect to an inert gas supply facility. The first exhaust pipe has a first end and a second end that are separated from each other, the first end of the first exhaust pipe is connected to the first hydrogen recovery line, and the second end of the first exhaust pipe is a free end. The second hydrogen recovery line has a first end and a second end that are separated from each other, the first end of the second hydrogen recovery line is connected to the first hydrogen recovery line, the second end of the second hydrogen recovery line is connected to the first hydrogen recovery line, and the point where the first end of the second hydrogen recovery line and the first hydrogen recovery line intersect is located between the first end of the first hydrogen recovery line and the point where the second end of the second hydrogen recovery line and the first hydrogen recovery line intersect, and the second hydrogen recovery line is provided with a Roots pump and a screw pump in order along the direction from the first end to the second end. The second exhaust pipe has a first end and a second end that are separated from each other, the first end of the second exhaust pipe is connected to a second hydrogen recovery line located between the screw pump and the second end of the second hydrogen recovery line, and the second end of the second exhaust pipe is a free end. The first end of the bypass piping is connected to the screw pump and the second hydrogen recovery line located between the first end of the second exhaust pipe and the second hydrogen recovery line, the second end of the bypass piping is connected to the second exhaust pipe, and a vacuum pump is provided in the bypass piping, the vacuum pump is arranged to discharge gas present in at least a portion of the second hydrogen recovery line and the second exhaust pipe. The hydrogen fracturing apparatus is characterized in that one end of the hydrogen reuse line is connectable to the opening of the hydrogen fracturing furnace, the other end of the hydrogen reuse line is connectable to the opening of the solid hydrogen storage facility, and the hydrogen reuse line is arranged to transport hydrogen gas from the solid hydrogen storage facility to the hydrogen fracturing furnace.

2. The first hydrogen recovery line is equipped with a first valve, a first pressure detection device, a flow meter, and a fourth valve in order from the first end to the second end. The first valve is located near the opening of the hydrogen fracture furnace, The first pressure detection equipment is arranged to detect the pressure inside the hydrogen crushing furnace. The flow meter is positioned to statistically measure the amount of hydrogen gas passing through the line between the hydrogen crushing furnace and the solid hydrogen storage facility. The hydrogen fracturing apparatus according to claim 1, characterized in that the fourth valve is arranged to control the flow of gas from the first hydrogen recovery line to the solid hydrogen storage facility.

3. The first hydrogen recovery line is further provided with a second valve, which is positioned between the first pressure detection equipment and the flow meter. The first end of the second hydrogen recovery line is connected to the first hydrogen recovery line located between the first pressure detection equipment and the second valve, and the second end of the second hydrogen recovery line is connected to the first hydrogen recovery line located between the second valve and the flow meter. The second hydrogen recovery line is equipped with a fifth valve and a sixth valve. The fifth valve is positioned between the first end of the second hydrogen recovery line and the Roots pump. The hydrogen fracturing apparatus according to claim 2, characterized in that the sixth valve is positioned between the screw pump and the second end of the second hydrogen recovery line.

4. The hydrogen recycling line includes a first hydrogen recycling line and a second hydrogen recycling line. The first end of the first hydrogen reuse line is connected to the first hydrogen recovery line located between the second valve and the flow meter, and the second end of the first hydrogen reuse line is connected to the solid hydrogen storage facility port. The hydrogen fracturing apparatus according to claim 3, characterized in that the first end of the second hydrogen reuse line is connected to a first hydrogen recovery line located between the first pressure detection equipment and the second valve, and the second end of the second hydrogen reuse line is connected to a first hydrogen recovery line located between the flow meter and the fourth valve.

5. The first end of the second exhaust pipe is connected to the second hydrogen recovery line located between the screw pump and the sixth valve. The second exhaust pipe is provided with a tenth valve, The second end of the bypass piping is connected to the second exhaust pipe located between the tenth valve and the second end of the second exhaust pipe. The hydrogen fracturing apparatus according to claim 4, characterized in that an eleventh valve is provided in the bypass piping, and the eleventh valve is positioned between the vacuum pump and the first end of the bypass piping.

6. The first hydrogen reuse line is equipped with a seventh valve, a pressure reducing valve, and a second pressure detection device in order from the first end to the second end. The pressure reducing valve is positioned to reduce the pressure of hydrogen gas released from the solid hydrogen storage facility. The second pressure detection device is arranged to detect the pressure inside the solid hydrogen storage facility. The hydrogen fracturing apparatus according to claim 5, characterized in that the second hydrogen reuse line is provided with an eighth valve, and the eighth valve is positioned in close proximity to the first end of the second hydrogen reuse line.

7. The hydrogen fracturing apparatus further includes an external hydrogen gas line, The external hydrogen gas line comprises a first end and a second end that are separated from each other, the first end of the external hydrogen gas line is connected to a second hydrogen reuse line located between the eighth valve and the second end of the second hydrogen reuse line, and the second end of the external hydrogen gas line is used to connect to a hydrogen gas supply facility. The hydrogen fracturing apparatus according to claim 6, wherein the second hydrogen reuse line is provided with a ninth valve, and the ninth valve is positioned between the point where the first end of the external hydrogen gas line and the second hydrogen reuse line intersect and the second end of the second hydrogen reuse line.

8. The first end of the inert gas line is connected to the first pressure detection equipment and the first hydrogen recovery line located between the first end of the second hydrogen recovery line and the point where the first hydrogen recovery line intersects, and the inert gas line is provided with a 14th valve. The hydrogen fracturing apparatus according to claim 7, characterized in that a 13th valve is provided in the external hydrogen gas line.

9. The solid hydrogen storage facility further includes a liquid heat exchange system, and the solid hydrogen storage facility is further provided with a circulating fluid inlet and a circulating fluid outlet. The aforementioned liquid heat exchange equipment includes a first storage tank, a second storage tank, a heat exchanger, a first liquid import pipe, a second liquid import pipe, a liquid export pipe, a first connection line, and a second connection line. The second storage tank is arranged to store an endothermic liquid, and the second storage tank has a second storage tank inlet and a second storage tank outlet. The heat exchanger comprises a heat source inlet, a cold source inlet, a cold source outlet, and a heat source outlet, wherein the cold source inlet is arranged to allow external coolant to enter the heat exchanger, the heat source inlet is arranged to allow heat-absorbing liquid absorbed in a solid hydrogen storage facility to enter the heat exchanger, the heat source outlet is arranged to discharge the heat-absorbing liquid that has undergone heat exchange from the heat exchanger, and the cold source outlet is arranged to discharge the heat-exchanged coolant from the heat exchanger. The first liquid import pipe has a first end and a second end that are separated from each other, the first end of the first liquid import pipe is connected to the circulating liquid inlet, and the second end of the first liquid import pipe is connected to the outlet of the second storage tank. The second liquid import pipe has a first end and a second end that are separated from each other, the first end of the second liquid import pipe is connected to the inlet of the second storage tank, and the second end of the second liquid import pipe is connected to the heat source outlet of the heat exchanger. The liquid export piping comprises a first end and a second end that are separated from each other, the first end of the liquid export piping being connected to the circulating liquid outlet, and the second end of the liquid export piping being connected to the heat source inlet of the heat exchanger. The first storage tank includes a first storage tank body and heating equipment, the first storage tank body is arranged to store a heat supply liquid, the first storage tank body is provided with a first storage tank inlet and a first storage tank outlet, and the heating equipment is arranged to heat the heat supply liquid in the first storage tank body. The first connection line comprises a first end and a second end that are separated from each other, the first end of the first connection line being connected to the outlet of the first storage tank, and the second end of the first connection line being connected to the first liquid import piping. The hydrogen fracturing apparatus according to claim 8, wherein the second connection line comprises a first end and a second end that are separated from each other, the first end of the second connection line is connected to the inlet of the first storage tank, and the second end of the second connection line is connected to the liquid export piping.

10. With the hydrogen fracturing material placed inside the hydrogen fracturing furnace, the 14th valve and the 1st valve are opened, and inert gas is introduced into the hydrogen fracturing furnace through the inert gas piping. When the pressure inside the hydrogen fracturing furnace reaches P+10 to P+30 kPa, the 14th valve is closed to stop the filling of inert gas, and the presence or absence of gas leakage in the hydrogen fracturing furnace is determined using the 1st pressure detection equipment. If there is no gas leak, the 12th valve is opened to discharge the gas in the hydrogen fracturing furnace through the 1st hydrogen recovery line and the 1st exhaust pipe. When the pressure in the hydrogen fracturing furnace reaches P, the 12th valve is closed, and the 5th valve, Roots pump, screw pump, and 10th valve are opened to discharge the residual gas in the hydrogen fracturing furnace through the 2nd exhaust pipe until the pressure in the hydrogen fracturing furnace is ≤ 1.5 Pa. Step (1) close the fifth valve, the Roots pump, the screw pump, and the tenth valve, open the eleventh valve and the vacuum pump to discharge the gas in the second hydrogen recovery line located between the screw pump and the sixth valve and the gas in the second exhaust pipe, and then close the eleventh valve and the vacuum pump. By opening the seventh valve, the third valve, the ninth valve, the eighth valve, and the first valve, the hydrogen gas released from the solid hydrogen storage facility is allowed to enter the hydrogen fracturing furnace through the first hydrogen reuse line, the first hydrogen recovery line where the flow meter is located, the second hydrogen reuse line, and the first hydrogen recovery line where the first valve is located. Step (2): The pressure inside the hydrogen crushing furnace is detected using the first pressure detection equipment. When the pressure inside the hydrogen crushing furnace is ≥ P + 80 kPa, the eighth valve is closed to stop the filling of hydrogen gas into the hydrogen crushing furnace. When the pressure inside the hydrogen crushing furnace is ≤ P + 75 kPa, the eighth valve is opened to fill the hydrogen crushing furnace with hydrogen gas. This process is repeated until the pressure inside the hydrogen crushing furnace stabilizes at P + 50 to P + 120 kPa, thereby completing the hydrogen filling process. After the hydrogen storage process of the hydrogen-fracturing material is completed, the second, third, and fourth valves are opened, allowing the hydrogen gas in the hydrogen-fracturing furnace to enter the solid hydrogen storage facility through the first hydrogen recovery line. When the pressure detected by the first pressure detection equipment reaches ≤ P + 30 kPa, the second, third, and fourth valves are closed, and the hydrogen-fracturing furnace is heated simultaneously. Step (3) is to open the fifth valve, the Roots pump, the screw pump, the sixth valve, the third valve, and the fourth valve when the temperature inside the hydrogen crushing furnace reaches 400 to 700°C, allowing hydrogen gas to enter the solid hydrogen storage facility through the first hydrogen recovery line where the first valve is located, the second hydrogen recovery line, and the first hydrogen recovery line where the third valve and the fourth valve are located, and after 5 to 10 hours, stop heating the hydrogen crushing furnace, and close the first valve, the fifth valve, the Roots pump, the screw pump, the sixth valve, the third valve, and the fourth valve to stop hydrogen gas recovery, and Step (4): After hydrogen gas recovery is stopped, the 14th valve and the 1st valve are opened to allow inert gas to enter the hydrogen fracturing furnace through the inert gas line. When the pressure inside the hydrogen fracturing furnace detected by the 1st pressure sensor reaches P+10 to P+30 kPa, the 14th valve is closed. As the hydrogen fracturing material inside the hydrogen fracturing furnace cools, the pressure inside the hydrogen fracturing furnace decreases. When the pressure inside the hydrogen fracturing furnace falls to ≤ P, the 14th air-operated valve is activated to introduce inert gas into the hydrogen fracturing furnace until the hydrogen fracturing material inside the hydrogen fracturing furnace cools to ambient temperature, thereby maintaining the pressure inside the hydrogen fracturing furnace at P to P+30 kPa. (However, P represents atmospheric pressure.) A method for recycling hydrogen using a hydrogen fracturing apparatus according to 8 or 9, characterized by including the following:

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