A magnesium-based solid-state hydrogen storage system

Abstract

A magnesium-based solid hydrogen storage system relates to a hydrogen storage system. In order to solve the problem of high energy consumption of the existing magnesium-based solid hydrogen storage system, a magnesium-based solid hydrogen storage system is provided. The magnesium-based solid hydrogen storage system is composed of a magnesium alloy solid hydrogen storage container, a hydrogen water heat exchanger, a water chiller unit, a heat conducting oil furnace, a air-cooled heat exchanger and a heat conducting oil three-way valve. The magnesium-based solid hydrogen storage system effectively utilizes the waste heat of the magnesium alloy material in the hydrogen charging process through the water chiller unit and the hydrogen water heat exchanger, realizes the balance of hydrogen supply and demand difference and heat coupling utilization, is beneficial to the popularization and application of the magnesium-based solid hydrogen storage technology, and accelerates the hydrogen energy industrialization process.

Description

Technical Field

[0001] This utility model relates to a hydrogen storage system. Background Technology

[0002] Hydrogen energy, with its high energy density, clean and efficient operation, and abundant resources, is increasingly becoming an important part of the new energy structure. Although hydrogen is easy to produce, its storage methods are very demanding; therefore, efficient and safe storage of hydrogen has become one of the important research areas.

[0003] Solid-state hydrogen storage systems have become a hot research topic due to their significant advantages such as high storage density, good safety, fast response speed, and cycle stability. Meanwhile, magnesium-based materials have become a key focus of hydrogen storage material research due to their high hydrogen storage density, reversibility, and good cycle stability. As the main component of the hydrogen storage and release process, the primary purpose of gas storage systems is to ensure the normal operation of hydrogen storage materials. Therefore, researching efficient and safe solid-state hydrogen storage heat exchange devices is crucial for solving the hydrogen storage and release problem.

[0004] The hydrogen charging and discharging process of magnesium alloy hydrogen storage materials is accompanied by a significant thermal effect. Taking the hydrogen charging reaction of pure magnesium as an example, its enthalpy change is approximately -76 kJ / mol H. When using magnesium-based materials for large-scale hydrogen storage, the heat released during the charging process is considerable. Effectively utilizing this heat of reaction will significantly reduce the energy consumption and operating costs of magnesium-based hydrogen storage systems, thereby promoting the industrial application of magnesium-based hydrogen storage technology. Utility Model Content

[0005] To address the high energy consumption problem of existing magnesium-based solid hydrogen storage systems, this invention proposes a magnesium-based solid hydrogen storage system.

[0006] This utility model's magnesium-based solid hydrogen storage system consists of a magnesium alloy solid hydrogen storage container (1), a hydrogen-water heat exchanger (2), a chiller unit (4), a thermal oil furnace (5), an air-cooled heat exchanger (7), and a thermal oil three-way valve (8). The thermal oil outlet (10) of the magnesium alloy solid hydrogen storage container (1) is connected to the thermal oil inlet of the thermal oil furnace (5) via an oil pipeline. The thermal oil inlet (11) of the magnesium alloy solid hydrogen storage container (1) is connected to the thermal oil outlet of the air-cooled heat exchanger (7) via an oil pipeline. The hydrogen port (12) of the magnesium alloy solid hydrogen storage container (1) is connected to the first hydrogen port of the hydrogen-water heat exchanger (2) via a hydrogen pipeline. A shielded pump (6) is installed on the oil pipeline at the outlet of the thermal oil furnace (5). The oil outlet of pump (6) is connected to the oil inlet of chiller unit (4) and heat transfer oil three-way valve (8) through oil pipeline. The other oil inlet of shielded pump (6) is connected to the oil outlet of chiller unit (4) through oil pipeline. One of the oil outlets of heat transfer oil three-way valve (8) is connected to the oil inlet of air-cooled heat exchanger (7) through oil pipeline. The other oil outlet of heat transfer oil three-way valve (8) is connected to the heat transfer oil inlet (11) of magnesium alloy solid hydrogen storage container (1). The heat exchange medium inlet of hydrogen-water heat exchanger (2) is connected to the heat exchange medium outlet of chiller unit (4) through medium inlet pipeline. The heat exchange medium outlet of hydrogen-water heat exchanger (2) is connected to the heat exchange medium inlet of chiller unit (4) through medium inlet pipeline.

[0007] The beneficial effects of this utility model are:

[0008] This novel magnesium-based solid-state hydrogen storage system effectively utilizes the waste heat generated during the hydrogen charging process of magnesium alloy materials through a chiller unit and a hydrogen-water heat exchanger. This achieves a balance between hydrogen supply and demand and heat coupling, which is beneficial for the promotion and application of magnesium-based solid-state hydrogen storage technology and accelerates the industrialization of hydrogen energy. This system can also serve as a hydrogen buffer device, regulating unstable hydrogen supply to meet the needs of continuous industrial production. During hydrogen charging and discharging, the system's thermal management can also be coupled with the energy requirements of ammonia synthesis, further improving overall energy efficiency. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the magnesium-based solid-state hydrogen storage system in Example 1;

[0010] Figure 2 This is a schematic diagram of a magnesium alloy solid hydrogen storage container. Detailed Implementation

[0011] The technical solution of this utility model is not limited to the specific embodiments listed below, but also includes any reasonable combination of the specific embodiments.

[0012] Specific Implementation Method 1: The magnesium-based solid hydrogen storage system in this implementation method consists of a magnesium alloy solid hydrogen storage container (1), a hydrogen-water heat exchanger (2), a chiller (4), a thermal oil furnace (5), an air-cooled heat exchanger (7), and a thermal oil three-way valve (8). The thermal oil outlet (10) of the magnesium alloy solid hydrogen storage container (1) is connected to the thermal oil inlet of the thermal oil furnace (5) through an oil pipeline. The thermal oil inlet (11) of the magnesium alloy solid hydrogen storage container (1) is connected to the thermal oil outlet of the air-cooled heat exchanger (7) through an oil pipeline. The hydrogen port (12) of the magnesium alloy solid hydrogen storage container (1) is connected to the first hydrogen port of the hydrogen-water heat exchanger (2) through a hydrogen pipeline. A shielded pump (6) is installed on the oil pipeline at the oil outlet of the thermal oil furnace (5). The oil outlet of the shielded pump (6) is connected to the oil inlet of the chiller unit (4) and the heat transfer oil three-way valve (8) through the oil pipeline. The other oil inlet of the shielded pump (6) is connected to the oil outlet of the chiller unit (4) through the oil pipeline. One of the oil outlets of the heat transfer oil three-way valve (8) is connected to the oil inlet of the air-cooled heat exchanger (7) through the oil pipeline. The other oil outlet of the heat transfer oil three-way valve (8) is connected to the heat transfer oil inlet (11) of the magnesium alloy solid hydrogen storage container (1). The heat exchange medium inlet of the hydrogen-water heat exchanger (2) is connected to the heat exchange medium outlet of the chiller unit (4) through the medium inlet pipeline. The heat exchange medium outlet of the hydrogen-water heat exchanger (2) is connected to the heat exchange medium inlet of the chiller unit (4) through the medium inlet pipeline.

[0013] This embodiment of the magnesium-based solid-state hydrogen storage system effectively utilizes the waste heat generated during the hydrogen charging process of the magnesium alloy material through a chiller unit and a hydrogen-water heat exchanger. This achieves a balance between hydrogen supply and demand and heat coupling, which is beneficial for the promotion and application of magnesium-based solid-state hydrogen storage technology and accelerates the industrialization of hydrogen energy. This novel magnesium-based solid-state hydrogen storage system can also serve as a hydrogen buffer device, regulating unstable hydrogen supply to meet the needs of continuous industrial production. During hydrogen charging and discharging, the system's thermal management can also be coupled with the energy requirements of ammonia synthesis, further improving overall energy efficiency.

[0014] Specific implementation method two: This implementation method is different from specific implementation method one in that: the hydrogen-water heat exchanger (2) is provided with a second hydrogen port, the second hydrogen port is connected to a hydrogen supply pipeline and a hydrogen charging and discharging valve group module (3) is installed on the hydrogen supply pipeline.

[0015] Specific Implementation Method 3: This implementation method differs from Specific Implementation Method 1 or 2 in that the oil pipeline is a heat-insulated pipe.

[0016] Specific Implementation Method Four: This implementation method differs from one of the specific implementation methods one to three in that the hydrogen transmission pipeline is a heat-insulated pipe.

[0017] Specific implementation method five: This implementation method differs from one of the specific implementation methods one to four in that the hydrogen-water heat exchanger (2) is filled with a heat exchange medium, which is water.

[0018] Specific implementation method six: This implementation method differs from one of the specific implementation methods one to five in that the cooling medium filled in the chiller unit (4) is water.

[0019] Specific implementation method seven: This implementation method differs from one of the specific implementation methods one to six in that: the magnesium alloy solid hydrogen storage container (1) is provided with multiple heat exchange tubes (9), and multiple heat exchange coils (9) are respectively connected to the heat transfer oil outlet (10) and the heat transfer oil inlet (11).

[0020] Specific implementation method eight: This implementation method differs from one of the specific implementation methods one to seven in that: the magnesium alloy solid hydrogen storage container (1) is filled with magnesium alloy hydrogen storage material.

[0021] Example 1

[0022] In this embodiment, the magnesium-based solid hydrogen storage system consists of a magnesium alloy solid hydrogen storage container (1), a hydrogen-water heat exchanger (2), a chiller (4), a thermal oil heater (5), an air-cooled heat exchanger (7), and a thermal oil three-way valve (8). The thermal oil outlet (10) of the magnesium alloy solid hydrogen storage container (1) is connected to the thermal oil inlet of the thermal oil heater (5) through an oil pipeline. The thermal oil inlet (11) of the magnesium alloy solid hydrogen storage container (1) is connected to the thermal oil outlet of the air-cooled heat exchanger (7) through an oil pipeline. The hydrogen port (12) of the magnesium alloy solid hydrogen storage container (1) is connected to the first hydrogen port of the hydrogen-water heat exchanger (2) through a hydrogen pipeline. A shielded pump (6) is installed on the oil pipeline at the outlet of the thermal oil heater (5). The oil outlet of (6) is connected to the oil inlet of the chiller (4) and the heat transfer oil three-way valve (8) through the oil pipeline. The other oil inlet of the shielded pump (6) is connected to the oil outlet of the chiller (4) through the oil pipeline. One of the oil outlets of the heat transfer oil three-way valve (8) is connected to the oil inlet of the air-cooled heat exchanger (7) through the oil pipeline. The other oil outlet of the heat transfer oil three-way valve (8) is connected to the heat transfer oil inlet (11) of the magnesium alloy solid hydrogen storage container (1). The heat exchange medium inlet of the hydrogen-water heat exchanger (2) is connected to the heat exchange medium outlet of the chiller (4) through the medium inlet pipeline. The heat exchange medium outlet of the hydrogen-water heat exchanger (2) is connected to the heat exchange medium inlet of the chiller (4) through the medium inlet pipeline.

[0023] The hydrogen-water heat exchanger (2) is provided with a second hydrogen port, which is connected to a hydrogen supply pipeline and a hydrogen charging and discharging valve assembly module (3) is installed on the hydrogen supply pipeline.

[0024] The oil pipeline is an insulated pipe;

[0025] The hydrogen transport pipeline is an insulated pipe;

[0026] The hydrogen-water heat exchanger (2) is filled with a heat exchange medium, which is water;

[0027] The cooling medium filled in the chiller unit (4) is water;

[0028] The magnesium alloy solid hydrogen storage container (1) is provided with multiple heat exchange tubes (9), and the multiple heat exchange coils (9) are respectively connected to the heat transfer oil outlet (10) and the heat transfer oil inlet (11);

[0029] The magnesium alloy solid hydrogen storage container (1) is filled with magnesium alloy hydrogen storage material.

[0030] The beneficial effects of this utility model are:

[0031] This novel magnesium-based solid-state hydrogen storage system effectively utilizes the waste heat generated during the hydrogen charging process of magnesium alloy materials through a chiller unit and a hydrogen-water heat exchanger. This achieves a balance between hydrogen supply and demand and heat coupling, which is beneficial for the promotion and application of magnesium-based solid-state hydrogen storage technology and accelerates the industrialization of hydrogen energy. This system can also serve as a hydrogen buffer device, regulating unstable hydrogen supply to meet the needs of continuous industrial production. During hydrogen charging and discharging, the system's thermal management can also be coupled with the energy requirements of ammonia synthesis, further improving overall energy efficiency.

Claims

1. A magnesium-based solid-state hydrogen storage system, characterized in that: The magnesium-based solid hydrogen storage system consists of a magnesium alloy solid hydrogen storage container (1), a hydrogen-water heat exchanger (2), a chiller (4), a thermal oil heater (5), an air-cooled heat exchanger (7), and a thermal oil three-way valve (8). The thermal oil outlet (10) of the magnesium alloy solid hydrogen storage container (1) is connected to the thermal oil inlet of the thermal oil heater (5) through an oil pipeline. The thermal oil inlet (11) of the magnesium alloy solid hydrogen storage container (1) is connected to the thermal oil outlet of the air-cooled heat exchanger (7) through an oil pipeline. The hydrogen port (12) of the magnesium alloy solid hydrogen storage container (1) is connected to the first hydrogen port of the hydrogen-water heat exchanger (2) through a hydrogen pipeline. A shielded pump (6) is installed on the oil pipeline at the outlet of the thermal oil heater (5). The oil outlet of the shielded pump (6) is connected to the oil inlet of the chiller (4) and the heat transfer oil three-way valve (8) through the oil pipeline. The other oil inlet of the shielded pump (6) is connected to the oil outlet of the chiller (4) through the oil pipeline. One of the oil outlets of the heat transfer oil three-way valve (8) is connected to the oil inlet of the air-cooled heat exchanger (7) through the oil pipeline. The other oil outlet of the heat transfer oil three-way valve (8) is connected to the heat transfer oil inlet (11) of the magnesium alloy solid hydrogen storage container (1). The heat exchange medium inlet of the hydrogen-water heat exchanger (2) is connected to the heat exchange medium outlet of the chiller (4) through the medium inlet pipeline. The heat exchange medium outlet of the hydrogen-water heat exchanger (2) is connected to the heat exchange medium inlet of the chiller (4) through the medium inlet pipeline.

2. The magnesium-based solid-state hydrogen storage system according to claim 1, characterized in that: The hydrogen-water heat exchanger (2) is provided with a second hydrogen port, which is connected to a hydrogen pipeline and a hydrogen charging and discharging valve assembly module (3) is installed on the hydrogen pipeline.

3. The magnesium-based solid-state hydrogen storage system according to claim 1, characterized in that: The oil pipeline is an insulated pipe.

4. The magnesium-based solid-state hydrogen storage system according to claim 1, characterized in that: The hydrogen transport pipeline is an insulated pipe.

5. The magnesium-based solid-state hydrogen storage system according to claim 1, characterized in that: The hydrogen-water heat exchanger (2) is filled with a heat exchange medium, which is water.

6. The magnesium-based solid-state hydrogen storage system according to claim 1, characterized in that: The cooling medium filled in the chiller unit (4) is water.

7. The magnesium-based solid-state hydrogen storage system according to claim 1, characterized in that: The magnesium alloy solid hydrogen storage container (1) is equipped with multiple heat exchange tubes (9), and multiple heat exchange coils (9) are respectively connected to the heat transfer oil outlet (10) and the heat transfer oil inlet (11).

8. The magnesium-based solid-state hydrogen storage system according to claim 1, characterized in that: The magnesium alloy solid hydrogen storage container (1) is filled with magnesium alloy hydrogen storage material.

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