Pressurized hydrogen storage system for producing hydrogen from methanol
By using solid hydrogen storage bottles and temperature control parts in methanol reforming hydrogen production equipment, the problem that the normal pressure hydrogen gas output from methanol reforming hydrogen production equipment cannot directly enter the high-pressure hydrogen storage tank is solved, and efficient storage and compression of hydrogen is achieved, meeting the high-pressure storage requirements.
Patent Information
- Application Number
- CN202421970145.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The normal pressure of hydrogen output from the methanol reforming hydrogen production equipment cannot directly meet the storage requirements of the high-pressure hydrogen storage tank, resulting in the inability to effectively use the hydrogen compressor to transport high-pressure hydrogen storage tank.
The solid hydrogen storage bottle and temperature control parts are used to reduce the internal pressure by cooling the solid hydrogen storage bottle, so that hydrogen outlet hydrogen gas can be input from the methanol reforming hydrogen production equipment; the internal pressure is increased by heating the solid hydrogen storage bottle, meeting the inlet pressure requirements of the hydrogen compressor, thereby inputting high-pressure hydrogen gas into the high-pressure hydrogen storage tank.
It realizes efficient storage and compression of the normal pressure hydrogen gas output from the methanol reforming hydrogen production equipment, solves the problem that hydrogen cannot directly enter the high-pressure hydrogen storage tank, and meets the high-pressure storage requirements of hydrogen.
Smart Images
Figure CN222836670U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of producing hydrogen from methanol, in particular to a pressurized hydrogen storage system used for producing hydrogen through reforming methanol. Background Art
[0002] There are three main ways to produce hydrogen from methanol: methanol steam reforming, methanol cracking, and methanol partial oxidation. The process of methanol steam reforming is relatively mature and has been successfully used to provide energy for new hydrogen fuel cell buses, with good application prospects. The advantages of methanol reforming include: a wide range of hydrogen raw materials and low prices, high utilization of hydrogen, simple hydrogen production equipment, and easy storage and transportation of methanol.
[0003] The Chinese invention patent with the patent number of 2022111799027 discloses a methanol reforming hydrogen production reactor, including a reactor body, an upper cover assembly and a lower cover assembly. The reactor body is provided with a plurality of combustion chambers and a plurality of reforming chambers, and the plurality of combustion chambers and the plurality of reforming chambers are arranged alternately in sequence. The upper cover assembly is sealed at the upper end opening of the reactor body. The upper cover assembly is provided with a combustion liquid inlet, a combustion air inlet and a reforming air outlet. The combustion liquid inlet and the combustion air inlet are both connected to the combustion chamber, and the reforming air outlet is connected to the reforming chamber. The lower cover assembly is provided with a reforming liquid inlet and an exhaust gas outlet. The reforming liquid inlet is connected to the reforming chamber, and the exhaust gas outlet is connected to the combustion chamber. The methanol reforming hydrogen production reactor has a faster heating speed, a more uniform heating temperature, and a low manufacturing cost, which is conducive to large-scale promotion and application.
[0004] In addition, the Chinese utility model patent with patent number 2017214393039 discloses a hydrogen supply system with a buffer function, including a methanol reforming hydrogen production equipment, a hydrogen buffer system and a hydrogen fuel cell system. The hydrogen buffer system includes an air inlet pipeline, a buffer tank, a metal hydrogen storage tank, an air outlet pipeline and a pressure reducing valve. One end of the air inlet pipeline is connected to the outlet of the methanol reforming hydrogen production equipment, and the other end is connected to the inlet of the buffer tank; one end of the air outlet pipeline is connected to the outlet of the buffer tank, and the other end is connected to the air inlet of the hydrogen fuel cell system; a three-way pipe joint is arranged in the middle of the air outlet pipeline, and the metal hydrogen storage tank is connected to the air outlet pipeline through the three-way pipe joint; the metal hydrogen storage tank is provided with a valve for opening or closing the metal hydrogen storage tank; a pressure reducing valve is arranged between the three-way pipe joint and the air inlet of the hydrogen fuel cell system. The above patents all disclose methanol reforming hydrogen production equipment.
[0005] In actual work, the hydrogen outlet pressure of methanol reforming hydrogen production equipment is usually at room temperature and pressure. In the process of storing hydrogen in high-pressure hydrogen storage tanks, a hydrogen compressor is needed, but there are difficulties in the pressurization process. The hydrogen outlet pressure of methanol reforming hydrogen production equipment is relatively low and cannot meet the inlet pressure requirements of the hydrogen compressor, resulting in the inability to use the hydrogen compressor to transport high-pressure hydrogen to the high-pressure hydrogen storage tank. In this case, the hydrogen output by the methanol reforming hydrogen production equipment is difficult to store in large quantities using high-pressure hydrogen storage tanks, which limits the use of methanol reforming hydrogen production equipment in some scenarios.
[0006] Based on this, how to store the hydrogen produced by methanol reforming in high-pressure hydrogen storage tanks is a technical problem that needs to be solved urgently. Summary of the invention
[0007] Based on this, it is necessary to provide a methanol hydrogen production pressurized hydrogen storage system to address the technical issue of how to store the hydrogen produced by methanol reforming hydrogen production in a high-pressure hydrogen storage tank.
[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0009] A methanol hydrogen production and pressurized hydrogen storage system comprises a methanol reforming hydrogen production device, wherein the methanol reforming hydrogen production device has a hydrogen outlet, and further comprises:
[0010] A solid-state hydrogen storage bottle, wherein an integrated valve is provided on the bottle mouth, and the hydrogen outlet is connected to the inlet end of the integrated valve;
[0011] A temperature control component, which is wrapped around the outside of the solid-state hydrogen storage bottle, and the temperature control component is configured to heat or cool the solid-state hydrogen storage bottle;
[0012] A hydrogen compressor, wherein the outlet end of the integrated valve is connected to the inlet end of the hydrogen compressor, and the outlet end of the hydrogen compressor is connected to the inlet end of the high-pressure hydrogen storage tank.
[0013] By adopting the above technical solution, according to the relationship between temperature and pressure, when the solid-state hydrogen storage bottle is heated, the pressure in the solid-state hydrogen storage bottle increases; when the solid-state hydrogen storage bottle is cooled, the pressure in the solid-state hydrogen storage bottle decreases. The hydrogen output from the hydrogen outlet of the methanol reforming hydrogen production equipment is at normal pressure. In order to meet the pressure requirement of the methanol reforming hydrogen production equipment to input hydrogen into the solid-state hydrogen storage bottle, the solid-state hydrogen storage bottle is cooled by the temperature control component to reduce the pressure in the solid-state hydrogen storage bottle, and the hydrogen outlet of the methanol reforming hydrogen production equipment can input hydrogen into the solid-state hydrogen storage bottle. When the solid-state hydrogen storage bottle inputs hydrogen into the high-pressure hydrogen storage tank through the hydrogen compressor, the temperature control component heats the solid-state hydrogen storage bottle, and the pressure in the solid-state hydrogen storage bottle increases to meet the inlet pressure requirement of the hydrogen compressor. The hydrogen compressor can input high-pressure hydrogen into the high-pressure hydrogen storage tank to meet the high-pressure storage requirement of hydrogen.
[0014] Preferably, two solid-state hydrogen storage bottles are provided, and the integrated valves on the two solid-state hydrogen storage bottles are connected to the hydrogen outlet through a hydrogen input pipeline.
[0015] Preferably, the integrated valves on the two solid-state hydrogen storage bottles are connected to the inlet end of the hydrogen compressor through a hydrogen output pipeline, and solenoid valves are provided on the two hydrogen input pipelines and the two hydrogen output pipelines.
[0016] By adopting the above technical solution, when one solid-state hydrogen storage bottle stores hydrogen input by the methanol reforming hydrogen production equipment, the other solid-state hydrogen storage bottle outputs hydrogen to the high-pressure hydrogen storage tank through the hydrogen compressor. The two solid-state hydrogen storage bottles are used alternately, and the methanol reforming hydrogen production equipment can continuously output hydrogen.
[0017] Preferably, the temperature control component is a heat exchanger, which includes an inner cylinder, an outer cylinder and an end plate. The inner cylinder is coaxially sleeved on the outside of the solid-state hydrogen storage bottle, and a heat exchange channel is formed between the inner cylinder and the outer cylinder. The two ends of the inner cylinder and the outer cylinder are respectively sealed and connected by two end plates, and the two end plates are respectively provided with an inlet and an outlet for inputting and outputting heat exchange medium.
[0018] By adopting the above technical solution, when the solid hydrogen storage bottle needs to be cooled, a cooling medium is input into the heat exchange channel from the inlet, and when the solid hydrogen storage bottle needs to be heated, a heating medium is input into the heat exchange channel from the inlet. The cooling medium may be cold air or coolant, and the heating medium may be hot air or hot liquid.
[0019] Preferably, a pressure detection component is provided in the solid-state hydrogen storage bottle to detect the pressure in the solid-state hydrogen storage bottle.
[0020] By adopting the above technical solution, the pressure detection component is used to detect the pressure value inside the solid-state hydrogen storage bottle, and the hydrogen storage amount in the solid-state hydrogen storage bottle is determined according to the pressure value.
[0021] Preferably, it also includes a first temperature detection component and a second temperature detection component, wherein the first temperature detection component is located on the outer wall of the solid-state hydrogen storage bottle, and the second temperature detection component is located inside the solid-state hydrogen storage bottle.
[0022] By adopting the above technical solution, the first temperature detection component is used to detect the temperature value on the outer wall of the solid-state hydrogen storage bottle, and the second temperature detection component is used to detect the temperature value inside the solid-state hydrogen storage bottle, and the temperature control component is adjusted according to the temperature value.
[0023] Compared with the related art, the methanol hydrogen production pressurized hydrogen storage system provided by the utility model has the following beneficial effects:
[0024] The utility model utilizes a solid-state hydrogen storage bottle to first store normal-pressure hydrogen output by a methanol reforming hydrogen production device, and a temperature control component is used to control the temperature of the solid-state hydrogen storage bottle. When the solid-state hydrogen storage bottle is cooled, the pressure in the solid-state hydrogen storage bottle is reduced, and the methanol reforming hydrogen production device can input hydrogen into the solid-state hydrogen storage bottle; when the solid-state hydrogen storage bottle is heated, the pressure in the solid-state hydrogen storage bottle is increased to meet the inlet pressure requirement of the hydrogen compressor, and the high-pressure hydrogen can be input into the high-pressure hydrogen storage tank by starting the hydrogen compressor, thereby solving the technical problem that normal-pressure hydrogen produced by methanol reforming hydrogen production is stored in a high-pressure hydrogen storage tank by using a hydrogen compressor. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic diagram of the structure of the methanol hydrogen production pressurized hydrogen storage system;
[0026] Figure 2 It is a three-dimensional diagram of a solid hydrogen storage bottle;
[0027] Figure 3 It is a partial cross-sectional view of a solid-state hydrogen storage bottle;
[0028] Figure 4 This is a three-dimensional diagram of a methanol reforming hydrogen production device;
[0029] Figure 5 This is a three-dimensional diagram of a hydrogen compressor.
[0030] Figure numerals: 1. Methanol reforming hydrogen production equipment; 2. Solid-state hydrogen storage bottle; 21. Integrated valve; 22. Solenoid valve; 3. Temperature control component; 31. Inner cylinder; 32. Outer cylinder; 33. End plate; 4. Hydrogen compressor; 5. High-pressure hydrogen storage tank. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0032] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as limiting the present invention.
[0033] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0034] See also Figures 1 to 5 As shown, the methanol hydrogen production and pressurized hydrogen storage system provided in the embodiment of the utility model includes a methanol reforming hydrogen production equipment 1, a solid hydrogen storage bottle 2, a temperature control component 3, a hydrogen compressor 4 and a high-pressure hydrogen storage tank 5. The methanol reforming hydrogen production equipment 1 has a hydrogen outlet, and the hydrogen output from the hydrogen outlet is at normal pressure.
[0035] An integrated valve 21 is provided on the mouth of the solid hydrogen storage bottle 2. The integrated valve 21 has an inlet end and an outlet end, which can input hydrogen into the solid hydrogen storage bottle 2 and output the hydrogen in the solid hydrogen storage bottle 2. The hydrogen outlet of the methanol reforming hydrogen production equipment 1 is connected to the inlet end of the integrated valve 21, and the hydrogen produced by the methanol reforming hydrogen production equipment 1 needs to be input into the solid hydrogen storage bottle 2 from the integrated valve 21.
[0036] The temperature control component 3 is wrapped around the outside of the solid-state hydrogen storage bottle 2. The temperature control component 3 is used to heat or cool the solid-state hydrogen storage bottle 2. When the solid-state hydrogen storage bottle 2 is heated, the pressure inside the solid-state hydrogen storage bottle 2 increases. When the solid-state hydrogen storage bottle 2 is cooled, the pressure inside the solid-state hydrogen storage bottle 2 decreases.
[0037] The hydrogen compressor 4 has an inlet end and an outlet end of hydrogen. The inlet end of the hydrogen compressor 4 is connected to the outlet end of the integrated valve 21. The hydrogen in the solid hydrogen storage bottle 2 is input into the hydrogen compressor 4 through the integrated valve 21. The outlet end of the hydrogen compressor 4 is connected to the inlet end of the high-pressure hydrogen storage tank 5.
[0038] The methanol hydrogen production pressurized hydrogen storage system provided by the utility model, when in use, when the hydrogen output by the methanol reforming hydrogen production equipment 1 needs to be input into the solid hydrogen storage bottle 2, the temperature control component 3 cools the solid hydrogen storage bottle 2, resulting in a decrease in the pressure in the solid hydrogen storage bottle 2, and the normal-pressure hydrogen output by the methanol reforming hydrogen production equipment 1 can be input into the solid hydrogen storage bottle 2 through the integrated valve 21; when the solid hydrogen storage bottle 2 is full of hydrogen, the solid hydrogen storage bottle 2 inputs hydrogen into the high-pressure hydrogen storage tank 5 through the hydrogen compressor 4, and the temperature control component 3 heats the solid hydrogen storage bottle 2, and the pressure in the solid hydrogen storage bottle 2 increases to meet the inlet pressure requirement of the hydrogen compressor 4, and the hydrogen compressor 4 is started to input high-pressure hydrogen into the high-pressure hydrogen storage tank 5.
[0039] Furthermore, the number of solid-state hydrogen storage bottles 2 is two, and the integrated valves 21 on the two solid-state hydrogen storage bottles 2 are connected to the hydrogen outlet of the methanol reforming hydrogen production equipment 1 through the hydrogen input pipeline. The integrated valves 21 on the two solid-state hydrogen storage bottles 2 are connected to the inlet end of the hydrogen compressor 4 through the hydrogen output pipeline, and the two hydrogen input pipelines and the two hydrogen output pipelines are provided with solenoid valves 22. The solenoid valve 22 is used to control the on-off of the hydrogen input pipeline and the hydrogen output pipeline. When one of the solid-state hydrogen storage bottles 2 stores the hydrogen input by the methanol reforming hydrogen production equipment 1, the other solid-state hydrogen storage bottle 2 outputs hydrogen to the high-pressure hydrogen storage tank 5 through the hydrogen compressor 4. The two solid-state hydrogen storage bottles 2 are used alternately, and the methanol reforming hydrogen production equipment 1 can continuously output hydrogen.
[0040] In addition, the temperature control component 3 is a heat exchanger, including an inner cylinder 31, an outer cylinder 32 and an end plate 33. The inner cylinder 31 is coaxially sleeved on the outside of the solid hydrogen storage bottle 2, and a heat exchange channel is formed between the inner cylinder 31 and the outer cylinder 32. The two ends of the inner cylinder 31 and the outer cylinder 32 are respectively sealed and connected by two end plates 33, and the two end plates 33 are respectively provided with an inlet and an outlet for inputting and outputting a heat exchange medium. When the solid hydrogen storage bottle 2 needs to be cooled, a cooling medium is input into the heat exchange channel from the inlet, and when the solid hydrogen storage bottle 2 needs to be heated, a heating medium is input into the heat exchange channel from the inlet. Among them, the cooling medium can be cold air or coolant, and the heating medium can be hot air or hot liquid. In other embodiments, the refrigeration and heating module disclosed in the invention patent with patent number 2016800319315 can be used to provide heat exchange medium to the heat exchanger.
[0041] To further optimize the above embodiment, a pressure detection member (not shown in the figure) is provided in the solid hydrogen storage bottle 2 to detect the pressure in the solid hydrogen storage bottle 2. The pressure detection member is used to detect the pressure value inside the solid hydrogen storage bottle 2, and determine the amount of hydrogen stored in the solid hydrogen storage bottle 2 according to the pressure value.
[0042] In addition, the methanol hydrogen production pressurized hydrogen storage system further includes a first temperature detection member (not shown in the figure) and a second temperature detection member (not shown in the figure), the first temperature detection member is located on the outer wall of the solid hydrogen storage bottle 2, and the second temperature detection member is located inside the solid hydrogen storage bottle 2. The first temperature detection member is used to detect the temperature value on the outer wall of the solid hydrogen storage bottle 2, the second temperature detection member is used to detect the temperature value inside the solid hydrogen storage bottle 2, and the temperature control member 3 adjusts the temperature according to the temperature value.
[0043] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.
[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A methanol hydrogen production pressurized hydrogen storage system, comprising a methanol reforming hydrogen production device (1), wherein the methanol reforming hydrogen production device (1) has a hydrogen outlet, and is characterized in that: Also includes: A solid-state hydrogen storage bottle (2), the bottle mouth of which is provided with an integrated valve (21), the hydrogen outlet being connected to the inlet end of the integrated valve (21); A temperature control component (3) wrapped around the outside of the solid-state hydrogen storage bottle (2), the temperature control component (3) being configured to heat or cool the solid-state hydrogen storage bottle (2); A hydrogen compressor (4), the outlet end of the integrated valve (21) is connected to the inlet end of the hydrogen compressor (4), and the outlet end of the hydrogen compressor (4) is connected to the inlet end of the high-pressure hydrogen storage tank (5).
2. The methanol-to-hydrogen pressurized hydrogen storage system according to claim 1 is characterized in that: Two solid-state hydrogen storage bottles (2) are provided, and the integrated valves (21) on the two solid-state hydrogen storage bottles (2) are connected to the hydrogen outlet via a hydrogen input pipeline.
3. The methanol-to-hydrogen pressurized hydrogen storage system according to claim 2 is characterized in that: The integrated valves (21) on the two solid-state hydrogen storage bottles (2) are connected to the inlet end of the hydrogen compressor (4) through a hydrogen output pipeline, and solenoid valves (22) are provided on the two hydrogen input pipelines and the two hydrogen output pipelines.
4. The methanol-to-hydrogen pressurized hydrogen storage system according to claim 1 is characterized in that: The temperature control component (3) is a heat exchanger, and the temperature control component (3) comprises an inner cylinder (31), an outer cylinder (32) and an end plate (33). The inner cylinder (31) is coaxially sleeved on the outside of the solid hydrogen storage bottle (2), and a heat exchange channel is formed between the inner cylinder (31) and the outer cylinder (32). The two ends of the inner cylinder (31) and the outer cylinder (32) are respectively sealed and connected through two end plates (33), and the two end plates (33) are respectively provided with an inlet and an outlet for inputting and outputting a heat exchange medium.
5. The methanol-to-hydrogen pressurized hydrogen storage system according to claim 1 is characterized in that: A pressure detection component is provided in the solid-state hydrogen storage bottle (2) to detect the pressure in the solid-state hydrogen storage bottle (2).
6. The methanol-to-hydrogen pressurized hydrogen storage system according to claim 1 is characterized in that: It also comprises a first temperature detection component and a second temperature detection component, wherein the first temperature detection component is located on the outer wall of the solid-state hydrogen storage bottle (2), and the second temperature detection component is located inside the solid-state hydrogen storage bottle (2).