A microwave reactor for a liquid carrier reversible hydrogen storage system

Abstract

A microwave reactor for a liquid carrier reversible hydrogen storage system, comprising: a shell; a carrier chamber arranged in the shell; a catalytic member arranged in the carrier chamber, the catalytic member being provided with a plurality of protruding ends, the plurality of protruding ends being evenly divided into a plurality of reaction cavities with respect to the carrier chamber, the reaction cavities being used for preparing hydrogen; and a heating mechanism arranged between the shell and the carrier chamber, the heating mechanism being provided with a plurality of heating portions, the heating portions corresponding to the reaction cavities in number, and the plurality of heating portions cooperating with the shell to uniformly heat the reaction cavities. The present application can solve the miniaturization, modularization and low-energy consumption system integration technology of mobile hydrogen storage system, and provide a reactor with superimposed microwave heat transfer efficiency and electromagnetic uniformity of multiple microwave source spatial geometric relationship and frequency spectrum structure.

Description

Technical Field

[0001] This invention belongs to the field of environmentally friendly hydrogen energy technology, and in particular relates to a microwave reactor for a reversible hydrogen storage and release system for liquid carriers. Background Technology

[0002] Reversible hydrogen storage and release technology using liquid molecules as a medium is a key technology for realizing large-scale hydrogen energy storage, transportation and application.

[0003] To overcome the bottleneck limitation imposed by the lagging development of on-site dehydrogenation reactors on mobile hydrogen storage and release technology, it is crucial to develop low-energy microwave-heated dehydrogenation reaction units based on the "aromatic-saturated cycloalkanes" system, which has higher hydrogen storage density per unit mass and more stable molecular structure, and to establish a mobile hydrogen storage and release technology system for liquid hydrogen carriers based on this system.

[0004] Traditional station-based hydrogen production processes are space-constrained, require high integration, consume carrier materials during operation, have low hydrogen utilization rates, and are subject to frequent start-ups and shutdowns with significant operational variations. However, microwave heating in liquid-carrier reversible hydrogen storage and release systems offers significant advantages at the catalyst particle level, making it highly suitable for such systems. Therefore, to address the miniaturization, modularization, and low-energy system integration of mobile hydrogen storage and release systems, this invention provides a multi-microwave source coupling technology. This technology enables the superposition of the spatial geometry and spectral structure of multiple microwave sources to enhance microwave heat transfer efficiency and electromagnetic uniformity in the reactor. Summary of the Invention

[0005] The purpose of this invention is to provide a microwave reactor for a reversible hydrogen storage and release system using a liquid carrier, in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following solution: a microwave reactor for a reversible hydrogen storage and release system using a liquid carrier, comprising:

[0007] shell;

[0008] The carrier chamber is disposed within the outer casing;

[0009] A catalyst is disposed in the carrier chamber. The catalyst has several protruding ends, and the protruding ends are evenly divided into several reaction chambers relative to the carrier chamber. The reaction chambers are used to produce hydrogen.

[0010] A heating mechanism is disposed between the outer shell and the carrier chamber. The heating mechanism is provided with a plurality of heating parts, the number of which is the same as the number of reaction chambers and they correspond one-to-one. The plurality of heating parts cooperate with the outer shell to uniformly heat the reaction chambers.

[0011] Preferably, the carrier chamber includes a reaction chamber disposed at the axis of the outer shell, and the two ends of the reaction chamber are respectively provided with an output port and an input port communicating with a plurality of reaction chambers. The output port is used to output hydrogen gas, and the input port is used to input liquid carrier.

[0012] Preferably, the reaction chamber is further provided with a liquid discharge port, a gas discharge port, and a temperature detection port.

[0013] Preferably, the liquid discharge port and gas discharge port are at a lower level than the output port.

[0014] Preferably, the heating element is a waveguide, which is disposed on the outer shell, with one end of the waveguide extending into the outer shell and facing the reaction chamber, and the spacing between adjacent waveguides is the same.

[0015] Preferably, the catalyst includes at least six catalyst plates disposed in the reaction chamber, the protruding end of which is an outward extension of the catalyst plate along the axis of the reaction chamber to be fixed to the inner wall of the reaction chamber, and the reaction chamber is disposed between two adjacent catalyst plates.

[0016] Preferably, the catalyst plate has a porous structure, and a foamed silicon carbide carrier is fixedly attached to the catalyst plate.

[0017] Preferably, the outer periphery of the housing is provided with a plurality of flush end faces, the number of which is the same as the number of reaction cavities and they correspond one-to-one, and the waveguide is detachably connected to the flush end faces.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects:

[0019] This invention divides the carrier chamber into several reaction chambers using a catalyst, through which hydrogen is produced. A heating mechanism is provided between the outer shell and the carrier chamber, with several heating elements on the heating mechanism corresponding to the reaction chambers to uniformly heat the carrier chamber. Combined with the catalytic effect of the catalyst, this improves the hydrogen production efficiency. Furthermore, by defining the reaction hydrogen production range between the carrier chamber and the outer shell, and by rationally distributing the reaction chambers within a limited space using microwave coupling, the overall hydrogen production reactor can uniformly distribute microwave electromagnetic radiation, enhance the heating effect, and improve the overall integrity of the microwave reactor. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the rear end of the casing;

[0022] Figure 2 This is a schematic diagram of the internal structure;

[0023] Figure 3 This is a schematic diagram of the internal structure of the reaction chamber;

[0024] Figure 4 This is a diagram showing the positional relationship between the input hole and the outer casing;

[0025] Figure 5 This is a line graph showing the temperature rise of multiple wave sources under short-term heating at the same power.

[0026] The components are: 1. Output port; 2. Waveguide; 3. Reaction chamber; 4. Outer shell; 5. Temperature detection port; 6. Input port; 7. Catalytic plate; 8. Liquid discharge port; 9. Gas discharge port. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example: Refer to Figures 1-5 A microwave reactor for a reversible hydrogen storage and release system in a liquid carrier, comprising:

[0030] 4. Outer shell;

[0031] The carrier chamber is disposed within the outer casing 4;

[0032] A catalyst is disposed in the carrier chamber. The catalyst has several protruding ends, and the protruding ends are evenly divided into several reaction chambers relative to the carrier chamber. The reaction chambers are used to produce hydrogen.

[0033] A heating mechanism is disposed between the outer shell 4 and the carrier chamber. The heating mechanism is provided with a plurality of heating parts, the number of which is the same as the number of reaction chambers and they correspond one-to-one. The plurality of heating parts cooperate with the outer shell 4 to uniformly heat the reaction chambers.

[0034] This invention divides the carrier chamber into several reaction chambers using a catalyst, and hydrogen is produced through these reaction chambers. A heating mechanism is installed between the outer shell 4 and the carrier chamber. Several heating elements on the heating mechanism, corresponding to the reaction chambers, uniformly heat the carrier chamber. Combined with the catalytic effect of the catalyst, this improves the hydrogen production efficiency. Furthermore, by defining the reaction hydrogen production range between the carrier chamber and the outer shell 4, and by rationally distributing the reaction chambers within a limited space using microwave coupling, the entire hydrogen production reactor can uniformly distribute microwave electromagnetic radiation, enhancing the heating effect. Compared with traditional methods, this effectively reduces heating energy consumption and improves the overall integrity of the microwave reactor.

[0035] In this technical solution, the heating part specifically refers to the use of microwave heating, and the outer shell 4 is preferably, but not limited to, a metal outer shell 4. This achieves a microwave three-dimensional leak-proof technology system that includes 1 / 4 wavelength impedance source suppression, secondary choke shielding, and end material absorption, thereby improving system efficiency and enhancing the overall safety of the reactor.

[0036] Furthermore, the carrier chamber includes a reaction chamber 3 disposed at the axis of the outer shell 4. The two ends of the reaction chamber 3 are respectively provided with an output hole 1 and an input hole 6 communicating with a plurality of reaction chambers. The output hole 1 is used to output hydrogen gas, and the input hole 6 is used to input liquid carrier.

[0037] Furthermore, the reaction chamber 3 is also provided with a liquid discharge port 8, a gas discharge port 9, and a temperature detection port 5.

[0038] Reference Figure 3 , Figure 4 In this technical solution, temperature detection hole 5 is used to insert a multi-point temperature sensor. It is understood that a sealing structure is set at the connection between the multi-point temperature sensor and temperature detection hole 5 to ensure the airtightness of the reaction chamber 3. Liquid carrier for hydrogen production is introduced into the reaction chamber 3 through input hole 6. Microwave heating is performed by the heating unit. The temperature change in several reaction chambers is detected by the multi-point temperature sensor to determine the rate at which liquid carrier is introduced through input hole 6 and to adjust the heating temperature of the heating unit accordingly. After heating for a period of time, the catalyst promotes the reaction and generates hydrogen gas, which is discharged through gas discharge hole 9. It is understood that a receiving device is set externally to store the generated hydrogen gas. The residual liquid and other generated gases after the reaction are discharged through liquid discharge hole 8 and gas discharge hole 9, respectively.

[0039] Furthermore, the liquid discharge port 8 and the gas discharge port 9 are at a lower level than the output port 1.

[0040] Since this technical solution is designed for hydrogen production, it utilizes the low density and light weight of hydrogen to separate hydrogen from residual liquid and other gases through height difference, ensuring the purity of hydrogen production. It is understood that the output port 1 and input port 6 are opened at the axial position of the reaction chamber 3 to facilitate communication with several reaction chambers. The temperature detection port 5 is not limited to being located at the axial position of the reaction chamber 3, thereby detecting the temperature difference in the reaction chamber 3 and obtaining data analysis on the microwave heat transfer effect.

[0041] Furthermore, the heating element is a waveguide 2, which is disposed on the outer shell 4. One end of the waveguide 2 extends into the outer shell 4 and faces the reaction chamber 3, and the spacing between two adjacent waveguides 2 is the same.

[0042] Reference Figure 2 By placing waveguide 2 between the outer shell 4 and the reaction chamber 3, and arranging several waveguides 2 at equal intervals, the experimental data and parameters on the overall size of the outer shell 4, the size of the reaction chamber 3, the heating power of waveguide 2, the size of waveguide 2, and the position of the temperature detection hole 5 are calculated by combining the hydrogen preparation purity and efficiency with the heating temperature monitored by multi-point temperature sensors. Based on the data and experiments, the multi-microwave coupling mechanism and the enhancement of microwave heating effect are explored. By strengthening microwave heat transfer and uniformly transmitting electromagnetic distribution, the problem of overall miniaturization and modularization of microwave reactors can be solved.

[0043] The waveguide 2 mentioned above is preferably, but not limited to, a BJ26 waveguide 2, and its dimensions are 100×86.36×43.18mm.

[0044] Furthermore, the catalyst includes at least six catalyst plates 7 disposed within the reaction chamber 3, the protruding end of which extends outward along the axis of the reaction chamber 3 to be fixedly connected to the inner wall of the reaction chamber 3, and the reaction chamber is disposed between two adjacent catalyst plates 7.

[0045] Furthermore, the catalyst plate 7 has a porous structure, and a foamed silicon carbide carrier is fixed on the catalyst plate 7.

[0046] Reference Figure 3 , Figure 5 Data analysis revealed that when reaction chamber 3 is divided into two, four, and six reaction chambers, the microwave source emitted by waveguide 2 heats the reaction chambers. Among them, the microwave source emitted by six waveguide 2 has the best heating effect on the reaction chambers. Correspondingly, by setting six catalytic plates 7 and fixing them in the reaction chamber 3 to separate the reaction chamber 3, the foam silicon carbide carrier attached to the catalytic plates 7 accelerates the microwave action to produce hydrogen and improves the hydrogen production efficiency.

[0047] In this technical solution, the reaction chamber 3 has dimensions of 150×140mm.

[0048] Furthermore, the outer periphery of the outer shell 4 is provided with a plurality of flush end faces, the number of which is the same as the number of reaction chambers and they correspond one-to-one, and the waveguide 2 is detachably connected to the flush end faces.

[0049] The corresponding outer shell 4 also adopts a hexagonal structure. At the same time, six waveguides 2 are detachably connected to the six flat end faces of the outer shell 4 by bolts. The six waveguides 2 are heated together, thereby enhancing the heating efficiency and ensuring uniform heating in the reaction chamber 3.

[0050] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0051] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A microwave reactor for a reversible hydrogen storage and release system using a liquid carrier, characterized in that, include: Outer shell (4); The carrier chamber is disposed inside the outer shell (4), and the carrier chamber includes a reaction chamber (3) disposed at the axis of the outer shell (4). A catalyst is disposed in the carrier chamber. The catalyst has several protruding ends, and the protruding ends are evenly divided into several reaction chambers relative to the carrier chamber. The reaction chambers are used to produce hydrogen. The catalyst includes at least six catalyst plates (7) disposed in the reaction chamber (3), the extended end of which is the catalyst plate (7) extending outward along the axis of the reaction chamber (3) to be fixed to the inner wall of the reaction chamber (3), and the reaction chamber is disposed between two adjacent catalyst plates (7); A heating mechanism is provided between the outer shell (4) and the carrier chamber. The heating mechanism is provided with a plurality of heating parts. The number of heating parts is the same as that of the reaction chamber and they correspond one-to-one. The plurality of heating parts cooperate with the outer shell (4) to uniformly heat the reaction chamber. The heating part is a waveguide (2), which is disposed on the outer shell (4). One end of the waveguide (2) extends into the outer shell (4) and faces the reaction chamber (3). The distance between two adjacent waveguides (2) is the same.

2. The microwave reactor for a reversible hydrogen storage and release system using a liquid carrier according to claim 1, characterized in that: The reaction chamber (3) is provided with an output hole (1) and an input hole (6) at both ends, which are connected to several reaction chambers. The output hole (1) is used to output hydrogen gas, and the input hole (6) is used to input liquid carrier.

3. The microwave reactor for a reversible hydrogen storage and release system in a liquid carrier according to claim 2, characterized in that: The reaction chamber (3) is also provided with a liquid discharge hole (8), a gas discharge hole (9) and a temperature detection hole (5).

4. The microwave reactor for a reversible hydrogen storage and release system in a liquid carrier according to claim 3, characterized in that: The liquid discharge port (8) and gas discharge port (9) are at a lower level than the output port (1).

5. The microwave reactor for a reversible hydrogen storage and release system in a liquid carrier according to claim 1, characterized in that: The catalyst plate (7) has a porous structure, and a foamed silicon carbide carrier is fixed on the catalyst plate (7).

6. The microwave reactor for a reversible hydrogen storage and release system in a liquid carrier according to claim 1, characterized in that: The outer periphery of the outer shell (4) is provided with several flush end faces, the number of which is the same as the number of reaction cavities and they correspond one-to-one. The waveguide (2) is detachably connected to the flush end faces.

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