Gas delivery system for magnesium-based hydrogen storage materials

Abstract

The purpose of this invention is to disclose a magnesium-based hydrogen storage material gas delivery system, relating to the field of magnesium-based hydrogen storage material delivery technology. The system includes an argon gas delivery end, a hydrogen storage material generating chamber, a receiving tank, a first filtration system, and an argon gas recovery system. The hydrogen storage material generating chamber is equipped with a safety valve, a safety gas path, and a second filtration system at its top. The argon gas delivery end has a first gas path, a second gas path, and a third gas path. The first gas path is a continuous flow gas path and continuously supplies argon gas to the safety gas path. The second gas path inputs argon gas to the top of the hydrogen storage material generating chamber and serves as a pressure source. The third gas path is equipped with a high-frequency switching valve and intermittently supplies argon gas to the delivery pipeline. Technical advantages: The continuous flow gas path of the first gas path prevents the risk of backflow of external gas; the intermittent gas path supplies gas to the delivery pipeline, flushing the accumulated hydrogen storage material inside the pipeline and preventing blockage; the second gas path inputs argon gas to the top of the hydrogen storage material generating chamber and serves as a pressure source.

Description

Technical Field

[0001] This invention relates to the field of magnesium-based hydrogen storage material transportation technology, and in particular to a magnesium-based hydrogen storage material gas transportation system. Background Technology

[0002] Hydrogen energy possesses both energy and material properties, playing a bridging role in the ambitious dual-carbon development strategy, and has been incorporated into the national energy strategy. Magnesium-based hydrogen storage materials, such as magnesium hydride, have widely available raw materials and are easy to store and transport safely, making them one of the main materials for solid-state hydrogen storage. However, the transportation of flammable and explosive magnesium hydride during its large-scale production presents a significant technical challenge.

[0003] Therefore, it is necessary to develop a magnesium-based hydrogen storage material gas delivery system. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to disclose a magnesium-based hydrogen storage material gas delivery system.

[0005] To achieve the above-mentioned objectives, the present invention provides a magnesium-based hydrogen storage material gas delivery system, comprising an argon gas delivery end, a hydrogen storage material generating chamber, a receiving tank, a first filtration system, and an argon gas recovery system;

[0006] The gas overflowing from the receiving tank enters the argon recovery system after passing through the first filtration system;

[0007] The two ends of the delivery pipeline are respectively connected to the bottom of the hydrogen storage material generating chamber and the top of the receiving tank;

[0008] The top of the hydrogen storage material generating chamber is equipped with a safety valve, a safety gas path, and a second filtration system. The gas overflowing from the safety valve is sent to the second filtration system after passing through the safety gas path, and the second filtration system is connected to the atmosphere.

[0009] The argon gas delivery end is provided with a first gas path, a second gas path and a third gas path. The first gas path is a continuous flow gas path and continuously supplies argon gas to the safety gas path.

[0010] The second gas path supplies argon gas to the top of the hydrogen storage material generating chamber and serves as a pressure source;

[0011] The third gas path is equipped with a high-frequency switching valve and intermittently supplies argon gas to the delivery pipeline;

[0012] The bottom of the hydrogen storage material generating chamber is a conical part with a cone angle of 30°-37°, and a vibrator is installed on the outer wall of the conical part.

[0013] Preferably, the gas pressure in the hydrogen storage material generating chamber is 0.1MPa-0.8MPa.

[0014] Preferably, the air pressure of the receiving tank is 10kPa-80kPa.

[0015] Preferably, a balance valve is also provided at the top of the hydrogen storage material generating chamber, and the gas overflowing from the balance valve is introduced into the safety gas path.

[0016] Preferably, the conveying pipe has a plurality of bends, the bending radius of which is at least 10 times the radius of the bend.

[0017] Preferably, the first filtration system is located above the receiving tank, and the magnesium-based hydrogen storage material intercepted by the first filtration system flows back to the receiving tank under the action of gravity.

[0018] Preferably, the argon gas recovery system includes a low-pressure gas storage tank, a third filtration system, a compressor, a refrigerated dryer, and a high-pressure gas storage tank, wherein the high-pressure gas storage tank is introduced into the argon gas delivery end through a recovery gas path.

[0019] Preferably, the argon gas discharged from the first filtration system passes sequentially through a low-pressure gas storage tank, a third filtration system, a compressor, a refrigerated dryer, a high-pressure gas storage tank, and a recovery gas path.

[0020] Preferably, the pressure of the low-pressure gas storage tank is lower than the pressure of the first filtration system;

[0021] The pressure of the high-pressure gas storage tank is 0.5MPa-1.2MPa, and the temperature of the argon gas inside the high-pressure gas storage tank is 25℃-40℃.

[0022] Preferably, the outlet of the first filtration system is equipped with an oxygen content analyzer, a water vapor content analyzer, and an air vent valve.

[0023] Compared with the prior art, the technical effects of the present invention are as follows:

[0024] (1) The first gas path, the second gas path and the third gas path are three branches of the argon gas delivery end. The first gas path is a continuous gas path and continuously supplies argon gas to the safety gas path, so that the safety gas path is always filled with positive pressure argon gas, preventing the risk caused by the reverse flow of external gas. The third gas path supplies gas to the delivery pipeline in an intermittent manner. The high-frequency switching valve controls the third gas path in a state of opening for 0.5s and closing for 0.5s. The third gas path is used to flush the hydrogen storage material accumulated in the delivery pipeline to avoid blockage. The second gas path inputs argon gas to the top of the hydrogen storage material generating chamber and serves as a pressure source. The hydrogen storage powder material is transported through the pressure difference between the hydrogen storage material generating chamber and the receiving tank.

[0025] (2) A safety valve, a safety gas path and a second filtration system are installed on the top of the hydrogen storage material generating chamber. When the pressure of the hydrogen storage material generating chamber exceeds the threshold, the safety valve opens automatically and discharges the mixture of argon and hydrogen storage material into the safety gas path. The second filtration system intercepts the hydrogen storage material in the mixture to prevent it from being discharged into the atmosphere.

[0026] (3) The bottom of the hydrogen storage material generating chamber is a cone-shaped part with a cone angle of 30°-37°, and a vibrator is installed on the outer wall of the cone-shaped part. This design effectively prevents the hydrogen storage material from accumulating and sticking to the wall in the cone-shaped part, and can ensure the normal transportation of the hydrogen storage material. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram illustrating the working principle of the magnesium-based hydrogen storage material gas delivery system of the present invention.

[0029] The system comprises: 1. Argon delivery end; 11. First gas path; 12. Second gas path; 13. Third gas path; 131. High-frequency switching valve; 14. Liquid argon tank; 15. Argon vaporization tank; 16. Fresh argon tank; 2. Hydrogen storage material generation chamber; 21. Safety valve; 22. Safety gas path; 23. Second filtration system; 231. Vent valve; 24. Conical section; 25. Balance valve; 3. Receiving tank; 4. First filtration system; 41. Gas outlet; 42. Oxygen content analyzer; 43. Water vapor content analyzer; 44. Vent valve; 5. Argon recovery system; 51. Low-pressure gas storage tank; 52. Third filtration system; 53. Compressor; 54. Refrigerated dryer; 55. High-pressure gas storage tank; 56. Recovery gas path; 6. Delivery pipeline; 61. Bend section. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0032] Example 1, reference Figure 1 As shown in the figure, this embodiment discloses a specific implementation of a magnesium-based hydrogen storage material gas delivery system (hereinafter referred to as "delivery device").

[0033] Magnesium-based hydrogen storage material gas delivery system, see Figure 1 As shown, the system includes an argon gas delivery end 1, a hydrogen storage material generating chamber 2, a receiving tank 3, a first filtration system 4, and an argon gas recovery system 5. Gas overflowing from the receiving tank 3 passes through the first filtration system 4 and then enters the argon gas recovery system 5. The two ends of the delivery pipe 6 are respectively connected to the bottom of the hydrogen storage material generating chamber 2 and the top of the receiving tank 3. A safety valve 21, a safety gas path 22, and a second filtration system 23 are installed at the top of the hydrogen storage material generating chamber 2. Gas overflowing from the safety valve 21 passes through the safety gas path 22 and is then sent to the second filtration system 23. 23. A vent valve 231 is provided and connected to the atmosphere; the argon gas delivery end 1 is provided with a first gas path 11, a second gas path 12 and a third gas path 13. The first gas path 11 is a continuous flow gas path and continuously supplies argon gas to the safety gas path 22; the second gas path 12 inputs argon gas to the top of the hydrogen storage material generating chamber 2 and serves as a pressure source; the third gas path 13 is provided with a high-frequency switching valve 131 and intermittently supplies argon gas to the delivery pipeline 6; the bottom of the hydrogen storage material generating chamber 2 is a conical part 24, the cone angle of the conical part 24 is 30°-37°, and a vibrator is provided on the outer wall of the conical part 24.

[0034] Specifically, see Figure 1The liquid argon tank 14 supplies argon to the fresh argon tank 16 after passing through the argon vaporization tank 15. The argon delivery end 1 is supplied with fresh argon from the fresh argon tank 16. The argon delivery end 1 is equipped with three branches: the first gas path 11, the second gas path 12, and the third gas path 13. The hydrogen storage material generating chamber 2 contains hydrogen storage powder material, such as magnesium hydride particles. The purpose of this embodiment is to send the hydrogen storage powder material in the hydrogen storage material generating chamber 2 into the receiving tank 3 through pressure difference, and then recover the argon through the argon recovery system 5 to realize the recycling of argon. The first gas path 11 is a continuous flow gas path and continuously supplies argon to the safety gas path 22, so that the safety gas path 22 is always filled with positive pressure argon, preventing the risk caused by the backflow of external gas into the hydrogen storage material generating chamber 2. The third gas path 13 supplies gas to the delivery pipeline 6 in an intermittent manner. The high-frequency switching valve 131 The third gas path 13 is controlled by opening and closing in 0.5s intervals. This third gas path 13 flushes the hydrogen storage material accumulated in the delivery pipeline 6, preventing blockages and increasing the delivery efficiency of the pipeline 6 to 50kg / min-500kg / min. The second gas path 12 inputs argon gas to the top of the hydrogen storage material generating chamber 2 as a pressure source. The hydrogen storage powder material is delivered through the pressure difference between the hydrogen storage material generating chamber 2 and the receiving tank 3. The gas pressure in the hydrogen storage material generating chamber 2 is 0.1MPa-0.8MPa, and the gas pressure in the receiving tank 3 is 10kPa-80kPa. A balance valve 25 is also installed at the top of the hydrogen storage material generating chamber 2. Gas overflowing from the balance valve 25 is introduced into the safety gas path 22. The purpose of the balance valve 25 is to regulate or stabilize the pressure in the hydrogen storage material generating chamber 2. The top two sections of the hydrogen storage material generating chamber are equipped with a safety valve 21, a safety gas path 22, and a second filtration system 23. When the pressure in the hydrogen storage material generating chamber 2 exceeds the threshold, the safety valve 21 automatically opens and discharges the mixture of argon and hydrogen storage material into the safety gas path 22. The second filtration system 23 intercepts the hydrogen storage material in the mixture to prevent it from being released into the atmosphere, thus preventing the accumulation of hydrogen storage material in the atmosphere and the risk of combustion and explosion. The bottom of the hydrogen storage material generating chamber 2 is a conical section 24 with a cone angle of 30°-37°, and a vibrator is installed on the outer wall of the conical section 24. This design effectively prevents the accumulation and adhesion of hydrogen storage material in the conical section 24, ensuring the normal delivery of hydrogen storage material. It should be noted that the pressure values ​​mentioned in this embodiment are all pressures displayed by pressure gauges.

[0035] See Figure 1 The conveying pipe 6 has several bends 61, and the bending radius of each bend 61 is at least 10 times the radius of the bend. When high-pressure gas is conveying hydrogen storage powder material, the resistance caused by the large bending radius of the bend 61 is small, which avoids the hydrogen storage powder material from clogging the bend 61. To further prevent the bend 61 from clogging, a high-frequency vibrator is installed on the outer wall of the bend 61, which can shake off the powder material adhering to the inner wall of the bend 61 at any time.

[0036] See Figure 1 The first filtration system 4 is located above the receiving tank 3, at a higher position. The magnesium-based hydrogen storage material intercepted by the first filtration system 4 flows back to the receiving tank 3 under gravity. The gas pressure of the receiving tank 3 is 10 kPa-80 kPa, while the gas pressure of the first filtration system 4 is slightly lower than that of the receiving tank 3. The receiving tank 3 maintains a slight positive pressure on the first filtration system 4, so that most of the hydrogen storage material falls into the receiving tank 3, and a small portion of the hydrogen storage material is transported to the first filtration system 4 with argon gas and then intercepted and flowed back to the receiving tank 3.

[0037] See Figure 1 The working principle of the argon recovery system 5 is as follows: The argon recovery system 5 includes a low-pressure storage tank 51, a third filtration system 52, a compressor 53, a refrigerated dryer 54, and a high-pressure storage tank 55. The high-pressure storage tank 55 is connected to the argon delivery end 1 through the recovery gas passage 56. The pressure of the low-pressure storage tank 51 is lower than that of the first filtration system 4. The argon gas discharged from the first filtration system 4 passes sequentially through the low-pressure storage tank 51, the third filtration system 52, the compressor 53, the refrigerated dryer 54, the high-pressure storage tank 55, and the recovery gas passage 56. The low-pressure argon gas generated by the first filtration system 4 enters the low-pressure storage tank 51, and then passes through the third filtration system 52 to further remove the hydrogen storage material. After being pressurized by the compressor 53, it enters the refrigerated dryer 54. The refrigerated dryer 54 cools the argon gas that has become heated by friction during the transportation process to 25℃-40℃. The pressure of the high-pressure storage tank is 0.5MPa-1.2MPa, and the temperature of the argon gas in the high-pressure storage tank is 25℃-40℃. To prevent excessive oxygen and moisture content in the recovered argon, the outlet 41 of the first filtration system 4 is equipped with an oxygen content analyzer 42, a moisture content analyzer 43, and a vent valve 44. If the oxygen content analyzer 42 detects that the oxygen content in the argon exceeds 2000 ppm, and / or the moisture content analyzer 43 detects that the moisture content in the argon exceeds 2000 ppm, the vent valve 44 will open, directly venting the argon discharged from the first filtration system 4, preventing it from entering the low-pressure storage tank 51. For safety, oxygen and moisture content analyzers are also installed in the hydrogen storage material generating chamber 2 and the receiving tank 3 to monitor the moisture and oxygen content in these chambers in real time.

[0038] It should be further explained that argon inlets and argon replacement ports are respectively provided in the hydrogen storage material generating chamber 2, receiving tank 3, first filtration system 4, second filtration system 4, and third filtration system 52. Before using the conveying system, all oxygen and water vapor in the hydrogen storage material generating chamber 2, receiving tank 3, first filtration system 4, second filtration system 4, and third filtration system 52 are replaced with argon gas through the argon inlets and argon replacement ports. The water vapor content must not exceed 2000 ppm, and the oxygen content must not exceed 2000 ppm. In addition, backflushing mechanisms are also provided in the first filtration system 4, second filtration system 4, and third filtration system 52. When the pressure difference before and after filtration in the first filtration system 4, second filtration system 4, and third filtration system 52 reaches 200 Pa, the backflushing mechanism is activated to reduce filtration resistance.

Claims

1. A magnesium-based hydrogen storage material gas delivery system, characterized in that, This includes an argon gas delivery system, a hydrogen storage material generation chamber, a receiving tank, a first filtration system, and an argon gas recovery system. The gas overflowing from the receiving tank enters the argon recovery system after passing through the first filtration system; The two ends of the delivery pipeline are respectively connected to the bottom of the hydrogen storage material generating chamber and the top of the receiving tank; The top of the hydrogen storage material generating chamber is equipped with a safety valve, a safety gas path, and a second filtration system. The gas overflowing from the safety valve is sent to the second filtration system after passing through the safety gas path, and the second filtration system is connected to the atmosphere. The argon gas delivery end is provided with a first gas path, a second gas path and a third gas path. The first gas path is a continuous flow gas path and continuously supplies argon gas to the safety gas path. The second gas path supplies argon gas to the top of the hydrogen storage material generating chamber and serves as a pressure source; The third gas path is equipped with a high-frequency switching valve and intermittently supplies argon gas to the delivery pipeline; The bottom of the hydrogen storage material generating chamber is a conical part with a cone angle of 30°-37°, and a vibrator is installed on the outer wall of the conical part.

2. The magnesium-based hydrogen storage material gas delivery system as described in claim 1, characterized in that, The gas pressure in the hydrogen storage material generating chamber is 0.1MPa-0.8MPa.

3. The magnesium-based hydrogen storage material gas delivery system as described in claim 1, characterized in that, The air pressure of the receiving tank is 10kPa-80kPa.

4. The magnesium-based hydrogen storage material gas delivery system as described in claim 1, characterized in that, A balance valve is also installed at the top of the hydrogen storage material generating chamber, and the gas overflowing from the balance valve is introduced into the safety gas path.

5. The magnesium-based hydrogen storage material gas delivery system as described in claim 1, characterized in that, The conveying pipe has several bends, and the bending radius of each bend is at least 10 times the radius of the bend itself.

6. The magnesium-based hydrogen storage material gas delivery system according to any one of claims 1-5, characterized in that, The first filtration system is located above the receiving tank, and the magnesium-based hydrogen storage material intercepted by the first filtration system flows back to the receiving tank under the action of gravity.

7. The magnesium-based hydrogen storage material gas delivery system as described in claim 6, characterized in that, The argon gas recovery system includes a low-pressure gas storage tank, a third filtration system, a compressor, a refrigerated dryer, and a high-pressure gas storage tank. The high-pressure gas storage tank is connected to the argon gas delivery end through a recovery gas path.

8. The magnesium-based hydrogen storage material gas delivery system as described in claim 6, characterized in that, Argon gas discharged from the first filtration system passes sequentially through a low-pressure storage tank, a third filtration system, a compressor, a refrigerated dryer, a high-pressure storage tank, and a recovery gas path.

9. The magnesium-based hydrogen storage material gas delivery system as described in claim 8, characterized in that, The pressure of the low-pressure gas storage tank is lower than that of the first filtration system; The pressure of the high-pressure gas storage tank is 0.5MPa-1.2MPa, and the temperature of the argon gas inside the high-pressure gas storage tank is 25℃-40℃.

10. The magnesium-based hydrogen storage material gas delivery system as described in claim 8, characterized in that, The outlet of the first filtration system is equipped with an oxygen content analyzer, a water vapor content analyzer, and an air vent valve.

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