A bubble inlet methanol reforming hydrogen reactor capable of meeting various power requirements

Abstract

The utility model provides a kind of bubble inlet methanol reforming hydrogen generator satisfying multiple power demand belongs to methanol reforming hydrogen field, solve the existing reforming hydrogen generator uneven heating, catalyst utilization is not high, equipment power fixedly not adjustable, equipment cost high problem. The utility model includes three reforming cavities placed side by side in reactor, the reforming cavity of left and right two sides and the reforming cavity structure in middle are different, three cavities are connected using perforated partition, and methanol steam enters cavity using the mode of bubbling, reactant flows in the form of serpentine channel. The mode that the multiple power demand can be satisfied is through the stack multilayer reforming cavity. The utility model adopts the design of square tube side wall opening connection, square tube internal gas is serpentine flow, and there is catalyst partition plate between square tube and square tube, prevent catalyst stacking, prevent catalyst breakage, catalyst utilization efficiency is higher, prolong catalyst life.

Description

Technical Field

[0001] This utility model belongs to the field of methanol reforming for hydrogen production, and in particular relates to a bubbling inlet methanol reforming for hydrogen production reactor that can meet various power requirements. Background Technology

[0002] Hydrogen energy, as a clean secondary energy source, relies on fuel cell technology for its efficient utilization, and the supply of hydrogen is the core bottleneck for the commercialization of fuel cells.

[0003] Hydrogen production technologies mainly include coal chemical hydrogen production and water electrolysis hydrogen production. Coal chemical hydrogen production technology itself has pollution problems, water electrolysis hydrogen production technology has high costs, and general solar hydrogen production technology suffers from poor efficiency and excessive costs due to the lack of low-cost energy storage systems. Due to its low cost, mild reaction conditions, and abundant resources, methanol has become a widely used feedstock for hydrogen production in recent years. There are three main methods for methanol reforming to produce hydrogen: methanol steam reforming, methanol partial oxidation reforming, and methanol autothermal reforming. Methanol steam reforming is the most widely used method because it produces the highest hydrogen yield.

[0004] To improve the conversion rate of methanol reforming, packed bed reformers are often used. However, this leads to drawbacks in methanol reforming reactors, such as low catalyst utilization (poor contact between fuel and catalyst, resulting in localized temperature inhomogeneity), fixed and unadjustable power, and high equipment costs. Furthermore, as space velocity increases, catalyst accumulation and crushing occur, affecting the lifespan of the reformer and hindering the widespread adoption of the technology. Utility Model Content

[0005] In view of this, in order to solve the defects of existing methanol reforming hydrogen production reactors such as low catalyst utilization, non-adjustable power, catalyst accumulation, and high cost, this utility model proposes a bubbling inlet methanol reforming hydrogen production reactor that can meet various power requirements, improve the contact area between methanol and catalyst, and extend the service life of the reformer.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a bubbling inlet methanol reforming hydrogen production reactor capable of meeting various power requirements, comprising multiple sets of methanol reforming hydrogen production reaction chambers, reforming chamber cover plates, reforming chamber temperature measuring tubes, reforming chamber inlet pipes, reforming chamber inlet plates, and reforming chamber outlet pipes, wherein the multiple sets of methanol reforming hydrogen production reaction chambers are connected in series. The methanol reforming hydrogen production reaction chamber includes two single-opening reforming chambers, an upper and lower double-opening reforming chamber, and a detachable catalyst partition plate. The upper and lower double-opening reforming chamber is located in the middle, and the two sides are connected to the single-opening reforming chambers respectively. The gas outlet of the single-opening reforming chamber on one side is connected to the gas outlet on one side of the upper and lower double-opening reforming chamber. The single-opening reforming chamber on the other side is placed in the opposite direction and its gas outlet is connected to the gas outlet on the other side of the upper and lower double-opening reforming chamber. The detachable catalyst partition plate is located at the overlapping gas outlet between the single-opening reforming chamber and the upper and lower double-opening reforming chamber. The reforming chamber cover plate is placed in the opposite direction to the openings of the single-opening reforming chambers at the beginning and end of the multiple sets of methanol reforming hydrogen production reaction chambers. A reforming chamber air inlet plate is installed on the air inlet of the single-opening reforming chamber on one side. The reforming chamber air inlet pipe and the reforming chamber temperature measuring pipe are both inserted into the reforming chamber through the reforming chamber air inlet plate. A reforming chamber air inlet plate is also installed on the air outlet of the single-opening reforming chamber at the beginning and end of the multiple sets of methanol reforming hydrogen production reaction chambers on the other side. A reforming chamber air outlet pipe is installed on the reforming chamber air inlet plate.

[0007] Furthermore, the single-opening reforming chamber and the upper and lower double-opening reforming chambers are uniformly filled with methanol reforming catalyst.

[0008] Furthermore, the single-opening reforming cavity and the upper and lower double-opening reforming cavities are welded and encapsulated with the reforming cavity cover plate and the reforming cavity air inlet plate.

[0009] Furthermore, the detachable catalyst partition plate is welded between the outlet of the single-opening reforming chamber and the upper and lower double-opening reforming chambers.

[0010] Furthermore, the air inlet pipe of the reforming chamber is provided with 32 evenly distributed small holes at its end inside the reforming chamber.

[0011] Furthermore, methanol vapor and water vapor enter the reforming chamber through the air inlet pipe. The methanol vapor and water vapor enter the chamber through the air inlet pipe and are then evenly sprayed out through 32 small holes.

[0012] Furthermore, both single-opening reforming cavities and the upper and lower double-opening reforming cavities are square cavities with the same width.

[0013] Furthermore, the length of the reforming chamber cover plate is twice the width of a single reforming chamber square cavity.

[0014] Furthermore, a square vent hole is opened on the side wall of the end of the pipe of the two single-opening reforming chambers.

[0015] Furthermore, the upper and lower double-opening reforming chamber pipe has two square exhaust holes on its front and rear sidewalls in opposite directions. Compared with the prior art, the beneficial effects of the bubbling inlet methanol reforming hydrogen production reactor of this utility model, which can meet various power requirements, are as follows: 1. This utility model adopts a design with an opening on the side wall of a square tube. The gas inside the square tube flows in a serpentine manner, and there are catalyst partition plates between the square tubes to prevent catalyst stacking and damage. This results in higher catalyst utilization efficiency and extended catalyst life.

[0016] 2. This utility model adopts a multi-cavity stacking method, which can meet different power requirements by stacking different numbers of reforming reaction cavities, and each cavity can be disassembled and assembled to achieve adjustable power.

[0017] 3. The reforming inlet pipe of this utility model has 32 outlet holes at the end, which can make methanol and catalyst come into more complete contact and react more thoroughly.

[0018] 4. The outer shell of the reforming reactor chamber of this utility model is made of 304 steel, and all pipes are made of 316 stainless steel, resulting in less technical investment and lower cost.

[0019] 5. This utility model is detachable and its power is adjustable. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a bubbling inlet methanol reforming hydrogen production reactor that can meet various power requirements, as described in this utility model. Figure 2 This is a schematic diagram of the external structure of a bubbling inlet methanol reforming hydrogen production reactor that can meet various power requirements, as described in this utility model. Figure 3 Schematic diagrams of a single-opening reforming chamber and a double-opening reforming chamber with upper and lower positive and negative openings; Figure 4 Schematic diagram of the intake pipe of the reforming chamber; Figure 5 This is a schematic diagram showing the location of two square exhaust holes in the double-opening reforming chamber pipe.

[0021] In the diagram: 1-Single-opening reforming chamber, 2-Double-opening reforming chamber (top and bottom, front and back), 3-Reforming chamber cover plate, 4-Reforming chamber temperature measuring tube, 5-Reforming chamber air inlet pipe, 6-Reforming chamber air inlet plate, 7-Reforming chamber air outlet pipe, 8-Removable catalyst partition plate, 9-Exhaust port. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present invention are shown in the drawings, not all of them. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the present invention.

[0023] See Figure 1-5 This embodiment describes a bubbling-inlet methanol reforming hydrogen production reaction chamber capable of meeting various power requirements. It includes multiple sets of methanol reforming hydrogen production reaction chambers, a reforming chamber cover plate 3, a reforming chamber temperature measuring tube 4, a reforming chamber inlet pipe 5, a reforming chamber inlet plate 6, and a reforming chamber outlet pipe 7. The multiple sets of methanol reforming hydrogen production reaction chambers are connected in series. The methanol reforming hydrogen production reaction chamber includes two single-opening reforming chambers 1, an upper and lower double-opening reforming chamber 2, and a removable catalyst partition plate 8. The upper and lower double-opening reforming chamber 2 is placed in the middle, with the single-opening reforming chambers 1 connected to its two sides respectively. The gas outlet of the single-opening reforming chamber 1 on one side is connected to the gas outlet on one side of the upper and lower double-opening reforming chamber 2. The single-opening reforming chamber 1 on the other side is placed in the opposite direction and its gas outlet is connected to the gas outlet on the other side of the upper and lower double-opening reforming chamber 2. The removable catalyst partition plate 8 is located at the overlapping gas outlet between the single-opening reforming chamber 1 and the upper and lower double-opening reforming chamber 2, and is used to partition the catalyst and allow methanol to pass through. The reforming chamber cover plate 3 is placed in the opposite direction to the opening of the single-opening reforming chamber 1 at the beginning and end of the multiple sets of methanol reforming hydrogen production reaction chambers, sealing the end without the intermediate gas separator plate of the reforming chamber; a reforming chamber air inlet plate 6 is installed on the air inlet of the single-opening reforming chamber 1 on one side, and the reforming chamber air inlet pipe 5 and the reforming chamber temperature measuring pipe 4 are inserted into the reforming chamber from the opening of the reforming chamber air inlet plate 6 respectively; a reforming chamber air inlet plate 6 is also installed on the air outlet of the single-opening reforming chamber 1 at the beginning and end of the multiple sets of methanol reforming hydrogen production reaction chambers on the other side, and a reforming chamber air outlet pipe 7 is installed on the reforming chamber air inlet plate 6.

[0024] The two single-opening reforming cavities 1 and the upper and lower double-opening reforming cavities 2 are all square pipes with the same width. The length of the reforming cavity cover plate 3 is twice the width of the square cavity of a single reforming cavity.

[0025] The two single-opening reforming chambers have identical chamber structures, arranged in opposite directions.

[0026] A square vent hole 9 is opened on the side wall of the end of the pipe of the two single-opening reforming chambers 1.

[0027] The middle double-opening reforming chamber 2 has two square exhaust holes 9 on its front and rear side walls, facing each other, as shown below. Figure 5 As shown.

[0028] The detachable catalyst partition plate 8 is welded between the outlets of the single-opening reforming chamber 1 and the upper and lower double-opening reforming chambers 2. The three chambers are connected, and the exhaust ports 9 connected in pairs are equipped with catalyst partition plates 8 that prevent catalyst particles from passing through but allow methanol to pass through.

[0029] The reforming chamber inlet pipe 5 and the reforming chamber temperature measuring pipe 4 are both inserted into the reforming chamber from the reforming chamber inlet plate 6. The reforming chamber inlet pipe 5 and the reforming chamber outlet pipe 7 have the same structure.

[0030] The temperature measuring tube 4 monitors the temperature of the chamber in real time, and the gas after the reaction is discharged through the gas outlet pipe 7; if the power needs to be adjusted, the number of methanol reforming hydrogen production reaction chambers connected in series can be increased or decreased.

[0031] The reforming chamber inlet pipe 5 has 32 evenly distributed small holes at its end. Methanol vapor and water vapor enter through the reforming chamber inlet pipe 5. The methanol vapor and water vapor enter the chamber through the reforming inlet pipe 5, and after being evenly sprayed out through the 32 small holes, they react with the catalyst along the serpentine flow channel.

[0032] The eight small holes at the end of the reforming chamber intake pipe 5 are essentially bubblers, as the methanol is blown in by a blower during intake.

[0033] The single-opening reforming chamber 1 and the dual-opening reforming chamber 2 are uniformly filled with methanol reforming catalyst, the main component of which is a copper-based catalyst for methanol reforming to hydrogen. After filling the reforming chamber, it is welded and sealed to the reforming chamber cover plate 3 and the reforming chamber air inlet plate 6.

[0034] The structural features of the single-opening reforming chamber 1 and the upper and lower double-opening reforming chambers 2 cause methanol vapor and water vapor to react in a serpentine flow pattern after entering the reforming chambers, resulting in a smoother reaction process and better reaction effect. The docking structure between the single-opening reforming chamber 1 and the upper and lower double-opening reforming chambers 2 allows for disassembly or further assembly, enabling the methanol vapor and water vapor to form a serpentine flow path within the chambers, and the chamber length is adjustable according to power requirements.

[0035] The working process of the bubbling inlet methanol reforming hydrogen production reaction chamber described in this utility model, which can meet various power requirements, is as follows: Reference Figure 1 Methanol and water vapor flow in from the reforming chamber inlet pipe 5. The structure of the reforming chamber inlet pipe 5 is as follows: Figure 4As shown, after passing through the inlet pipe 5 of the reforming chamber, the gas flows into the first single-opening reforming chamber 1. After entering the single-opening reforming chamber 1, the mixed gas flows through the opening at the end of the single-opening reforming chamber 1, through the middle gas separator 8 of the reforming chamber, into the upper and lower double-opening reforming chamber 2. From the end of the upper and lower double-opening reforming chamber 2, it flows to the front end, through the catalyst partition plate 8, into another single-opening reforming chamber 1, and finally flows out through the outlet pipe 7 of the reforming chamber. The mixed gas flows through the entire reforming chamber in a serpentine manner. In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating orientation and positional relationships are based on the orientation and positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0036] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A bubbling inlet methanol reforming hydrogen production reactor capable of meeting various power requirements, characterized in that: It includes multiple sets of methanol reforming hydrogen production reaction chambers, a reforming chamber cover plate (3), a reforming chamber temperature measuring tube (4), a reforming chamber inlet pipe (5), a reforming chamber inlet plate (6), and a reforming chamber outlet pipe (7). The multiple sets of methanol reforming hydrogen production reaction chambers are connected in series. The methanol reforming hydrogen production reaction chamber includes two single-opening reforming chambers (1), an upper and lower double-opening reforming chamber (2), and a detachable catalyst partition plate (8). The upper and lower double-opening reforming chamber (2) is placed in the middle, and the two sides are connected to the single-opening reforming chamber (1). The gas outlet of the single-opening reforming chamber (1) on one side is connected to the gas outlet on one side of the upper and lower double-opening reforming chamber (2). The single-opening reforming chamber (1) on the other side is placed in the opposite direction and its gas outlet is connected to the gas outlet on the other side of the upper and lower double-opening reforming chamber (2). The detachable catalyst partition plate (8) is located at the overlapping gas outlet between the single-opening reforming chamber (1) and the upper and lower double-opening reforming chamber (2). The reforming chamber cover plate (3) is placed in the opposite direction to the opening of the single-opening reforming chamber (1) at the beginning and end of the multiple sets of methanol reforming hydrogen production reaction chambers. A reforming chamber air inlet plate (6) is installed on the air inlet of the single-opening reforming chamber (1) on one side. The reforming chamber air inlet pipe (5) and the reforming chamber temperature measuring pipe (4) are both inserted into the reforming chamber from the reforming chamber air inlet plate (6). A reforming chamber air inlet plate (6) is also installed on the air outlet of the single-opening reforming chamber (1) at the beginning and end of the multiple sets of methanol reforming hydrogen production reaction chambers on the other side. A reforming chamber air outlet pipe (7) is installed on the reforming chamber air inlet plate (6).

2. The bubbling inlet methanol reforming hydrogen production reactor according to claim 1, capable of meeting various power requirements, is characterized in that: The single-opening reforming chamber (1) and the upper and lower double-opening reforming chambers (2) are uniformly filled with methanol reforming catalyst.

3. The bubbling inlet methanol reforming hydrogen production reactor according to claim 1, capable of meeting various power requirements, is characterized in that: The single-opening reforming chamber (1) and the upper and lower double-opening reforming chambers (2) are welded and encapsulated with the reforming chamber cover plate (3) and the reforming chamber air inlet plate (6).

4. The bubbling inlet methanol reforming hydrogen production reactor according to claim 1, capable of meeting various power requirements, is characterized in that: The detachable catalyst partition plate (8) is welded between the outlet of the single-opening reforming chamber (1) and the upper and lower double-opening reforming chamber (2).

5. The bubbling inlet methanol reforming hydrogen production reactor according to claim 1, capable of meeting various power requirements, is characterized in that: The air inlet pipe (5) of the reforming chamber is provided with 32 evenly distributed small holes at the end of the reforming chamber.

6. The bubbling inlet methanol reforming hydrogen production reactor according to claim 5, capable of meeting various power requirements, is characterized in that: Methanol vapor and water vapor enter through the air inlet pipe (5) of the reforming chamber. The methanol vapor and water vapor enter the chamber through the air inlet pipe (5) and are evenly sprayed out through 32 small holes.

7. The bubbling inlet methanol reforming hydrogen production reactor according to claim 1, capable of meeting various power requirements, is characterized in that: Both single-opening reforming cavities (1) and the upper and lower double-opening reforming cavities (2) are square cavities with the same width.

8. The bubbling inlet methanol reforming hydrogen production reactor according to claim 7, capable of meeting various power requirements, is characterized in that: The length of the reforming chamber cover plate (3) is twice the width of a single reforming chamber square cavity.

9. The bubbling inlet methanol reforming hydrogen production reactor according to claim 1, capable of meeting various power requirements, is characterized in that: A square vent hole (9) is opened on the side wall of the end of the pipe of the two single-opening reforming chambers (1).

10. The bubbling inlet methanol reforming hydrogen production reactor according to claim 1, capable of meeting multiple power requirements, is characterized in that: The upper and lower double-opening reforming chamber (2) has two square exhaust holes (9) on the opposite sides of the pipe.

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