Methanol hydrogen production device

Abstract

The methanol hydrogen production device comprises a reaction tank, a gas inlet pipe and an exhaust pipe are arranged in the reaction tank, one end of the gas inlet pipe is inserted into the reaction tank in a closed mode, and the gas inlet pipe and the reaction tank are coaxially arranged; the reaction tank is further provided with an exhaust pipe, the gas inlet pipe is sleeved with a plurality of reaction modules, a reaction chamber and a heating chamber which are separated from each other are arranged in each reaction module, and each reaction chamber is communicated with the gas inlet pipe; a thermal mass feeding pipe and a thermal mass discharging pipe are further arranged on the reaction pipe, the inlet end of the thermal mass feeding pipe is connected with a thermal mass temporary storage box through a circulating pump, the outlet end of the thermal mass feeding pipe is connected with the heating chambers respectively, a thermal mass discharging pipe is further arranged on the reaction tank, the thermal mass discharging pipe is communicated with the heating chambers respectively, and the outlet end of the thermal mass discharging pipe is communicated with the thermal mass temporary storage box; the reaction tank is divided into a plurality of reaction chambers and heating chambers through the reaction modules, and a centralized reaction type structure in the prior art is shunted, so that raw material gas which cannot react in time is in rapid contact with a catalyst, and the hydrogen production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of new energy equipment technology, specifically to a methanol-to-hydrogen device. Background Technology

[0002] Methanol-to-hydrogen is a technological route for hydrogen production. Methanol is abundant and inexpensive, and its liquid nature at room temperature and pressure makes it easy to store and transport. Compared to other hydrogen production methods, such as industrial hydrogen production, methanol-to-hydrogen has lower energy consumption and lower costs.

[0003] Existing hydrogen production devices contain a catalyst. A mixture of methanol vapor and water vapor reacts with the catalyst to produce hydrogen. The device is also equipped with a heating device to ensure the working temperature of the catalyst. However, existing hydrogen production devices have only one feed gas inlet. The initial contact area between the feed gas and the catalyst after entering the device is small, resulting in low hydrogen production efficiency. Utility Model Content

[0004] The main objective of this application is to provide a methanol-to-hydrogen device that addresses the shortcomings of low hydrogen production efficiency in existing technologies.

[0005] This application achieves the above objectives through the following technical solutions:

[0006] A methanol-to-hydrogen apparatus, comprising a reaction vessel;

[0007] An air inlet pipe is provided, with one end of the air inlet pipe being sealed and inserted into the reaction vessel, and the other end of the air inlet pipe being provided with a feed port. The air inlet pipe is coaxially arranged with the reaction vessel.

[0008] An exhaust pipe is connected to the reaction vessel and is used to discharge the hydrogen gas generated in the reaction.

[0009] A plurality of reaction modules are provided, each of which is sleeved on the air inlet pipe; each of the reaction modules is provided with a reaction chamber and a heating chamber that are separated from each other, each of the reaction chambers is connected to the air inlet pipe, and each reaction chamber is also provided with an exhaust port that is connected to the reaction tank;

[0010] A thermogravimetric feed pipe is provided, the inlet end of which is connected to a thermogravimetric storage tank via a circulating pump, and the outlet end of which is connected to each of the heating chambers. A thermogravimetric discharge pipe is also provided on the reaction vessel, the inlet end of which is connected to each of the heating chambers, and the outlet end of which is connected to the thermogravimetric storage tank.

[0011] Optionally, the reaction vessel includes a sealed vessel body and a sealing cap. A connecting sleeve is provided at the bottom of the vessel body, and a plug is provided at one end of the air inlet pipe located inside the reaction vessel, and this end is threadedly connected to the connecting sleeve.

[0012] Optionally, the sealing cover is provided with a plug hole adapted to the air intake pipe, and the air intake pipe is welded to the sealing cover.

[0013] Optionally, the reaction module includes a ring-shaped box, the box having an isolation plate that divides its internal space into a reaction chamber and a heating chamber, and the upper and lower sides of the box being threadedly connected to cover plates.

[0014] Optionally, the box body includes an inner cylinder and an outer cylinder that are coaxially connected; the partition plate is disposed between the inner cylinder and the outer cylinder, and along the radial direction of the partition plate, the inner side of the partition plate is connected to the inner cylinder, and the outer side of the partition plate is connected to the outer cylinder; both cover plates are provided with a coaxial first connecting ring and a second connecting ring, the first connecting ring being threadedly connected to the inner cylinder, and the second connecting ring being threadedly connected to the outer cylinder.

[0015] Optionally, around the axis of the box body, the inner cylinder is provided with a plurality of air inlets, and each of the exhaust ports is provided on the outer cylinder, and each of the air inlets and each of the exhaust ports are respectively connected to the reaction chamber.

[0016] Optionally, along the axial direction of the air intake pipe, several layers of air vents are provided on the air intake pipe, and each air vent in the same layer is arranged around the axis of the air intake pipe; each air vent is connected to each air intake.

[0017] Optionally, the outer cylinder is also provided with a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe being respectively connected to the heating chamber, and the axes of the first connecting pipe and the second connecting pipe being aligned and passing through the center of the outer cylinder.

[0018] Optionally, a plurality of first partition plates are provided in the reaction chamber, the bottom surface of each first partition plate being connected to the isolation plate and its top surface being attached to the cover plate; the first partition plates are arranged radially around the axis of the reaction chamber.

[0019] Optionally, a plurality of second partition plates are provided in the heating chamber, the bottom surface of each second partition plate being connected to the isolation plate and its top surface being attached to the cover plate; each second partition plate is arc-shaped and arranged in a concentric circle around the axis of the heating chamber.

[0020] Compared with the prior art, this application has the following beneficial effects:

[0021] This application includes a reaction vessel, which is equipped with an inlet pipe and an outlet pipe. One end of the inlet pipe is closed and inserted into the reaction vessel, while the other end is provided with a feed inlet. The inlet pipe is coaxially arranged with the reaction vessel. The reaction vessel is also equipped with an outlet pipe, and a plurality of reaction modules are sleeved on the inlet pipe. Each reaction module is provided with a reaction chamber and a heating chamber that are separated from each other. Each reaction chamber is connected to the inlet pipe. The reaction pipe is also equipped with a thermal mass feed pipe and a thermal mass discharge pipe. The inlet end of the thermal mass feed pipe is connected to a thermal mass storage tank through a circulation pump, and its outlet end is connected to each of the heating chambers. The reaction vessel is also equipped with a thermal mass discharge pipe, the inlet end of which is connected to each of the heating chambers, and its outlet end is connected to the thermal mass storage tank.

[0022] In use, the thermomass is first circulated through the thermomass feed pipe and thermomass discharge pipe, thereby increasing the temperature inside the reaction vessel, especially ensuring that the temperature inside the reaction chamber is at the optimal reaction temperature of the catalyst; then, a mixture of methanol vapor and water vapor is introduced into the reaction vessel through the inlet pipe, and then enters the reaction chamber separately. Under the catalysis of the catalyst, the reaction produces hydrogen gas, which is finally discharged through the exhaust pipe.

[0023] Compared with the prior art, firstly, in the technical solution described in this application, the reaction chamber and the heating chamber are arranged alternately and stacked on each other, thereby introducing heat into the reaction vessel and increasing the contact area between the heat and the reaction chamber, which helps to ensure the stability of the temperature inside the reaction chamber.

[0024] Secondly, by setting up the reaction module, this application divides the internal space of the reaction tank into several independent reaction chambers. The raw material gas can enter each reaction chamber simultaneously to react and generate hydrogen simultaneously. This diverts the centralized reaction structure in the prior art, allowing the raw material gas that cannot react in time to come into contact with the catalyst more quickly, thereby maximizing the hydrogen production efficiency.

[0025] Furthermore, the heights of the reaction chamber and heating chamber can be adjusted according to actual needs, maximizing the utilization of space within the reaction vessel.

[0026] Finally, since each reaction chamber is independent, a malfunction in one reaction chamber will not affect the normal operation of other reaction chambers, which helps to improve the stability and reliability of the entire system. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a methanol-to-hydrogen apparatus provided in Embodiment 1 of this application;

[0028] Figure 2 An exploded view of a methanol-to-hydrogen apparatus provided in Embodiment 1 of this application;

[0029] Figure 3 A cross-sectional view of a methanol-to-hydrogen apparatus provided in Embodiment 1 of this application;

[0030] Figure 4 An exploded view of the housing of a methanol-to-hydrogen apparatus provided in Embodiment 1 of this application;

[0031] Figure 5 This is a top view of the reaction chamber;

[0032] Figure 6 This is a top view of the heating chamber;

[0033] Reference numerals: 1-Reaction vessel, 2-Inlet pipe, 3-Exhaust pipe, 4-Reaction chamber, 5-Heating chamber, 6-Exhaust port, 7-Heat mass feed pipe, 8-Circulating pump, 9-Heat mass storage tank, 10-Heat mass discharge pipe, 11-Plug, 12-Box body, 13-Isolation plate, 14-Cover plate, 15-First connecting pipe, 16-Second connecting pipe, 17-First dividing plate, 18-Second dividing plate, 101-Tank body, 102-Sealing cover, 103-Connecting sleeve, 104-Insertion hole, 1201-Inner cylinder, 1202-Outer cylinder, 1203-First connecting ring, 1204-Second connecting ring, 1205-Inlet, 1206-Vent port.

[0034] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] Implementation Method 1

[0040] Reference Figures 1 to 6 This embodiment is an optional embodiment of this application, which discloses a methanol-to-hydrogen apparatus, including a reaction tank 1;

[0041] The reaction vessel 1 includes a vessel body 101 and a sealing cover 102. The vessel body 101 and the sealing cover 102 are connected by several bolts, and a sealing ring is also provided between the vessel body 101 and the sealing cover 102.

[0042] The sealing cap 102 is provided with a coaxial insertion hole 104, and the bottom of the tank body 101 is provided with a connecting sleeve 103 coaxial with the tank body 101; one end of the air inlet pipe 2 is connected to the raw material gas supply source, and the other end is sealed by a plug 11. The end of the plug 11 passes through the sealing cap 102, and the air inlet pipe 2 is welded to the sealing cap 102 to improve the sealing performance.

[0043] One end of the air inlet pipe 2, which is equipped with a plug 11, is inserted into the bottom of the tank body 101 and is threadedly connected to the connecting sleeve 103;

[0044] Furthermore, several reaction modules are also provided inside the reaction vessel 1. The structures of each reaction module are exactly the same, each including a box body 12. The box body 12 includes an inner cylinder 1201 and an outer cylinder 1202. The inner cylinder 1201 and the outer cylinder 1202 are coaxially sleeved. An isolation plate 13 is also provided between the inner cylinder 1201 and the outer cylinder 1202. The isolation plate 13 is generally in the shape of a circular ring. Along the radial direction of the isolation plate 13, the inner side of the isolation plate 13 is connected to the inner cylinder 1201, and its outer side is connected to the outer cylinder 1202.

[0045] The top and bottom of the box body 12 are provided with cover plates 14. Each of the two cover plates 14 is provided with a coaxial first connecting ring 1203 and a second connecting ring 1204. The first connecting ring 1203 is threadedly connected to the inner cylinder 1201, and the second connecting ring 1204 is threadedly connected to the outer cylinder 1202.

[0046] In the above structure, the cavity on the upper side of the isolation plate 13 is the reaction chamber 4, and the cavity on the lower side is the heating chamber 5. Of course, the positions of the reaction chamber 4 and the heating chamber 5 can also be interchanged.

[0047] Furthermore, around the axis of the box body 12, a plurality of air inlets 1205 are provided on the inner cylinder 1201, and a plurality of exhaust outlets 6 are provided on the outer cylinder 1202. Each air inlet 1205 and each exhaust outlet 6 are respectively connected to the reaction chamber 4.

[0048] Along the axial direction of the air inlet pipe 2, a plurality of layers of air vents 1206 are provided on the air inlet pipe 2, and each air vent 1206 in the same layer is arranged around the axis of the air inlet pipe 2; each air vent 1206 is connected to each air inlet 1205, thereby constructing a complete airflow passage in the reaction vessel 1.

[0049] Furthermore, the outer cylinder 1202 is also provided with a first connecting pipe 15 and a second connecting pipe 16. The first connecting pipe 15 and the second connecting pipe 16 are respectively connected to the heating chamber 5. The axes of the first connecting pipe 15 and the second connecting pipe 16 overlap and pass through the center of the outer cylinder 1202, that is, the included angle between the first connecting pipe 15 and the second connecting pipe 16 is 180°.

[0050] The tank body 101 is also provided with a hot mass feed pipe 7 and a hot mass discharge pipe. The inlet end of the hot mass feed pipe 7 is connected to a hot mass storage tank 9 through a circulating pump 8. Its outlet end passes through the tank body 101 and is connected in parallel to several branches. Each branch is connected to each of the first connecting pipes 15.

[0051] The inlet end of the hot mass discharge pipe is connected to multiple branches in parallel, each branch being connected to each of the second connecting pipes 16 respectively, and the outlet end of the hot mass discharge pipe is connected to the hot mass storage box 9, thereby constructing a complete and independent hot mass discharge circuit.

[0052] Furthermore, a plurality of first dividing plates 17 are provided in the reaction chamber 4, the bottom surface of each first dividing plate 17 is connected to the isolation plate 13, and its top surface is attached to the cover plate 14; the first dividing plates are arranged radially around the axis of the reaction chamber 4.

[0053] The heating chamber 5 is provided with a plurality of second partition plates 18. The bottom surface of each second partition plate 18 is connected to the isolation plate 13, and its top surface is attached to the cover plate 14. Each second partition plate 18 has an arc-shaped structure and is arranged in a concentric circle around the axis of the heating chamber 5.

[0054] The arrangement of the aforementioned dividing plates enables a more regular flow path to be formed within the reaction chamber 4 and the heating chamber 5, thereby facilitating the diffusion of the feed gas and heat mass. This helps to ensure the temperature of the catalyst and the contact area between the feed gas and the catalyst, thus improving hydrogen production efficiency.

[0055] The reaction vessel 1 is also equipped with an exhaust pipe 3. The outlet end of the exhaust pipe 3 is connected to a hydrogen collection tank, and its inlet end is connected to the cavity between the reaction module and the inner wall of the reaction vessel 1, so that the hydrogen gas discharged from the exhaust port 6 can be directly extracted.

[0056] In use, the thermomass is first circulated through the thermomass feed pipe and thermomass discharge pipe, thereby increasing the temperature inside the reaction vessel, especially ensuring that the temperature inside the reaction chamber is at the optimal reaction temperature of the catalyst; then, a mixture of methanol vapor and water vapor is introduced into the reaction vessel through the inlet pipe, and then enters the reaction chamber separately. Under the catalysis of the catalyst, the reaction produces hydrogen gas, which is finally discharged through the exhaust pipe.

[0057] Compared with the prior art, firstly, in the technical solution described in this application, the reaction chamber and the heating chamber are arranged alternately and stacked on each other, thereby introducing heat into the reaction vessel and increasing the contact area between the heat and the reaction chamber, which helps to ensure the stability of the temperature inside the reaction chamber.

[0058] Secondly, by setting up the reaction module, this application divides the internal space of the reaction tank into several independent reaction chambers. The raw material gas can enter each reaction chamber simultaneously to react and generate hydrogen simultaneously. This diverts the centralized reaction structure in the prior art, allowing the raw material gas that cannot react in time to come into contact with the catalyst more quickly, thereby maximizing the hydrogen production efficiency.

[0059] Furthermore, the heights of the reaction chamber and heating chamber can be adjusted according to actual needs, maximizing the utilization of space within the reaction vessel.

[0060] Finally, since each reaction chamber is independent, a malfunction in one reaction chamber will not affect the normal operation of other reaction chambers, which helps to improve the stability and reliability of the entire system.

[0061] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A methanol-to-hydrogen apparatus, characterized in that, Including the reaction vessel (1); An air inlet pipe (2) is provided. One end of the air inlet pipe (2) is closed and inserted into the reaction vessel (1), and the other end is provided with a feed port. The air inlet pipe (2) is coaxially arranged with the reaction vessel (1). An exhaust pipe (3) is connected to the reaction vessel (1) and is used to discharge the hydrogen gas generated in the reaction. Several reaction modules are provided, each of which is sleeved on the air inlet pipe (2); each of the reaction modules is provided with a reaction chamber (4) and a heating chamber (5) that are separated from each other, each of the reaction chambers (4) is connected to the air inlet pipe (2), and each of the reaction chambers (4) is also provided with an exhaust port (6) that is connected to the reaction tank (1); A thermogravimetric feed pipe (7) is provided. The inlet end of the thermogravimetric feed pipe (7) is connected to a thermogravimetric storage tank (9) via a circulating pump (8). Its outlet end is connected to each of the heating chambers (5). A thermogravimetric discharge pipe (10) is also provided on the reaction vessel (1). The inlet end of the thermogravimetric discharge pipe (10) is connected to each of the heating chambers (5), and its outlet end is connected to the thermogravimetric storage tank (9).

2. The methanol-to-hydrogen apparatus according to claim 1, characterized in that, The reaction vessel (1) includes a sealed and connected vessel body (101) and a sealing cap (102). A connecting sleeve (103) is provided at the bottom of the vessel body (101). A plug (11) is provided at one end of the air inlet pipe (2) located inside the reaction vessel (1), and this end is threadedly connected to the connecting sleeve (103).

3. The methanol-to-hydrogen apparatus according to claim 2, characterized in that, The sealing cap (102) is provided with a plug hole (104) adapted to the air intake pipe (2), and the air intake pipe (2) is welded to the sealing cap (102).

4. The methanol-to-hydrogen apparatus according to claim 1, characterized in that, The reaction module includes a ring-shaped box (12), and the box (12) is provided with an isolation plate (13) that divides its internal space into a reaction chamber (4) and a heating chamber (5). The upper and lower sides of the box (12) are threadedly connected with cover plates (14).

5. A methanol-to-hydrogen apparatus according to claim 4, characterized in that, The box body (12) includes an inner cylinder (1201) and an outer cylinder (1202) that are coaxially connected; the partition plate (13) is disposed between the inner cylinder (1201) and the outer cylinder (1202). Along the radial direction of the partition plate (13), the inner side of the partition plate (13) is connected to the inner cylinder (1201), and its outer side is connected to the outer cylinder (1202); both cover plates (14) are provided with a coaxial first connecting ring (1203) and a second connecting ring (1204). The first connecting ring (1203) is threadedly connected to the inner cylinder (1201), and the second connecting ring (1204) is threadedly connected to the outer cylinder (1202).

6. A methanol-to-hydrogen apparatus according to claim 5, characterized in that, Around the axis of the box body (12), the inner cylinder (1201) is provided with a plurality of air inlets (1205), and each of the exhaust ports (6) is provided on the outer cylinder (1202). Each of the air inlets (1205) and each of the exhaust ports (6) are respectively connected to the reaction chamber (4).

7. A methanol-to-hydrogen apparatus according to claim 6, characterized in that, Along the axial direction of the air intake pipe (2), a plurality of air inlets (1206) are provided on the air intake pipe (2), and each air inlet (1206) in the same layer is arranged around the axis of the air intake pipe (2); each air inlet (1206) is connected to each air inlet (1205).

8. A methanol-to-hydrogen apparatus according to claim 5, characterized in that, The outer cylinder (1202) is also provided with a first connecting pipe (15) and a second connecting pipe (16). The first connecting pipe (15) and the second connecting pipe (16) are respectively connected to the heating chamber (5). The axes of the first connecting pipe (15) and the second connecting pipe (16) overlap and pass through the center of the outer cylinder (1202).

9. A methanol-to-hydrogen apparatus according to claim 4, characterized in that, The reaction chamber (4) is provided with a plurality of first partition plates (17), the bottom surface of each first partition plate (17) is connected to the isolation plate (13), and its top surface is attached to the cover plate (14); the first partition plates (17) are arranged radially around the axis of the reaction chamber (4).

10. A methanol-to-hydrogen apparatus according to claim 4, characterized in that, The heating chamber (5) is provided with a number of second partition plates (18). The bottom surface of each second partition plate (18) is connected to the isolation plate (13), and its top surface is attached to the cover plate (14). Each second partition plate (18) has an arc-shaped structure and is arranged in a concentric circle around the axis of the heating chamber (5).

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