Reforming hydrogen production device

Abstract

The utility model discloses a reforming hydrogen production device which comprises a methanol water storage tank, a gasifier and a reactor, the reactor comprises a reaction shell with a reaction chamber, and a central gas outlet main pipe, a heating pipe network and a plurality of gas inlet branch pipes which are arranged in the reaction chamber, vent holes penetrating through the inner wall and the outer wall of the central air outlet main pipe and the air inlet branch pipes are formed in the central air outlet main pipe and the air inlet branch pipes, the heating pipe networks surround the two sides of the air inlet branch pipes, and high-temperature hot air is introduced into the heating pipe networks. According to the reforming hydrogen production device disclosed by the utility model, the heating pipe network is arranged around the inner ring and the outer ring of the gas inlet branch pipe, so that gas exhausted from the gas inlet branch pipe is in rapid contact with the heating pipe network, the gas is rapidly heated, the hydrogen production speed is accelerated, and the heating pipe network is distributed around the gas outlet; gas exhausted from each position of the gas inlet branch pipe can be uniformly heated, so that the hydrogen production efficiency is higher, and the problem of low hydrogen production efficiency caused by non-uniform temperature is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production, in particular to a reforming hydrogen production device. Background Art

[0002] As one of the most ideal energy sources among many new energy sources, hydrogen has been widely used in industry. Therefore, there are more and more methods for hydrogen production. The more common methods of hydrogen production include industrial byproduct hydrogen production, water electrolysis hydrogen production, methanol reforming hydrogen production and fossil fuel hydrogen production. Among them, methanol steam reforming hydrogen production is a hydrogen production technology developed abroad in the 1980s. It has low investment, fast construction, no emissions and pollution, and high raw material availability. So far, the hydrogen production process at home and abroad is very mature. The highly integrated technology and fuel cell power generation technology have been successfully applied in the fields of new energy vehicles and communication stations, and the application prospects are very good. Reforming methanol steam reforming catalyst is mainly used at a higher reaction temperature (250-300℃), with high catalyst activity and long service life. However, when it is used under high temperature conditions, there are problems such as slow startup speed, high byproduct CO content and low thermal efficiency. When the temperature height is not met, the catalytic hydrogen production rate is low. Therefore, the temperature height and the distribution and dissipation of heat are very important for catalytic hydrogen production.

[0003] In the related art, an electromagnetic heater is installed in the catalyst chamber or a tube array with high-temperature air passing through it is installed. However, these two methods will cause the local temperature of the reforming chamber to be too high, while the temperature at a location slightly farther away from the heating body will be slightly lower, and the heating temperature cannot be evenly distributed, resulting in low catalytic efficiency.

[0004] In view of this, it is necessary to propose a reforming hydrogen production device to solve the above-mentioned defects. Utility Model Content

[0005] The main purpose of the utility model is to provide a reforming hydrogen production device, aiming to solve the problem that the heating temperature in the existing reforming chamber cannot be evenly distributed, resulting in low catalytic hydrogen production efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides a reforming hydrogen production device, including a methanol water storage tank, a vaporizer connected to the methanol water storage tank for vaporizing a methanol water solution, and a reactor connected to the vaporizer for causing the completely vaporized methanol water solution from the vaporizer to undergo an endothermic reaction to produce hydrogen.

[0007] The reactor comprises a reaction shell having a reaction chamber, and a central gas outlet main pipe, a heating pipe network and a plurality of gas inlet branch pipes arranged in the reaction chamber. The central gas outlet main pipe and the gas inlet branch pipes are both provided with air vents penetrating the inner and outer walls thereof. The plurality of gas inlet branch pipes are circumferentially distributed around the central gas outlet main pipe with the axis of the central gas outlet main pipe as the center. The heating pipe network is arranged around the inner and outer circles of the gas inlet branch pipe, and high-temperature hot air is introduced into the heating pipe network.

[0008] Preferably, the heating pipe network includes a plurality of air pipes which are cross-arranged and interconnected internally.

[0009] Preferably, the cross-section of the heating pipe network is adapted to the distribution shape of the plurality of air intake branch pipes.

[0010] Preferably, the cross-section of the heating pipe network is circular.

[0011] Preferably, the heating pipe network is in a honeycomb shape or a mesh shape.

[0012] Preferably, each of the air inlet branch pipes includes an air outlet end and an air inlet end, the air inlet end is arranged close to the air inlet of the reaction chamber, the air outlet end discharges the completely vaporized methanol aqueous solution entering from the air inlet end, and the heating pipe network is arranged around the air outlet end of the air inlet branch pipe.

[0013] Preferably, the air outlet is made of a porous mesh plate.

[0014] Preferably, the two heating pipe networks arranged inside and outside are simultaneously connected to an air intake main pipe, and the air intake main pipe allows high-temperature air to flow in.

[0015] Preferably, the catalyst in the reaction chamber includes a carrier and an active component layer supported in the carrier.

[0016] Preferably, the carrier is silicon carbide.

[0017] Compared with the prior art, the reforming hydrogen production device provided by the utility model has the following beneficial effects:

[0018] The reforming hydrogen production device provided by the utility model is arranged with the heating pipe network around the inner and outer sides of the air inlet branch pipe, so that the gas discharged from the air inlet branch pipe can quickly come into contact with the heating pipe network, thereby quickly heating the gas and accelerating the hydrogen production speed. Moreover, the heating pipe network is distributed around its outlet, and the gas discharged from each position of the air inlet branch pipe can be evenly heated, so the hydrogen production efficiency is higher, and there will be no problems such as excessive by-product CO at high temperature and slow hydrogen production efficiency at too low temperature due to uneven temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the reforming hydrogen production device provided by the utility model;

[0021] Figure 2 for Figure 1 A cross-sectional view of the reactor shown;

[0022] Figure 3 for Figure 2 A cross-sectional view of the reactor shown;

[0023] Figure 4 for Figure 3 The structural schematic diagram of the heating pipe network is shown.

[0024] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] See also Figure 1 The utility model provides a reforming hydrogen production device. The reforming hydrogen production device comprises a methanol water storage tank 1, a vaporizer 3 connected to the methanol water storage tank 1 for vaporizing a methanol water solution, and a reactor 5 connected to the vaporizer 3 for causing an endothermic reaction of the vaporized methanol water solution from the vaporizer 3 to produce hydrogen. The hydrogen mixed gas produced by the reactor 5 is purified and then stored.

[0030] It should be noted that, in this embodiment, a nickel-based catalyst is used as a catalyst for catalyzing the reaction.

[0031] Please refer to Figure 2 and Figure 3 The reactor 5 comprises a reaction shell 54 having a top chamber 51, a reaction chamber 52 and a bottom chamber 53, and a central gas outlet main pipe 55, a heating pipe network 56 and a plurality of gas inlet branch pipes 57 arranged in the reaction chamber 52. The central gas outlet main pipe 55 and the gas inlet branch pipe 57 are both provided with vent holes penetrating the inner and outer walls thereof. The plurality of gas inlet branch pipes 57 are circumferentially distributed around the central gas outlet main pipe 55 with the axis of the central gas outlet main pipe 55 as the center. The heating pipe network 56 is arranged around the inner and outer circles of the gas inlet branch pipe 57. High-temperature hot air is introduced into the heating pipe network 56. The gas enters from the gas inlet of the reaction shell 54 to the top chamber 51 thereof. Each of the near-side branch pipes is connected to the top chamber 51 to introduce the gas into the reaction chamber 52. A slight negative pressure is formed in the central gas outlet main pipe 55 to extract the prepared hydrogen mixed gas. Therefore, by setting up the heating pipe network 56 around the inner and outer circles of the air inlet branch pipe 57, the gas discharged from the air inlet branch pipe 57 can quickly come into contact with the heating pipe network 56, thereby quickly heating the gas and accelerating the hydrogen production speed. Moreover, the heating pipe network 56 is distributed around the air outlet of the air inlet branch pipe, and the gas discharged from each position of the air inlet branch pipe 57 can be evenly heated, so the hydrogen production efficiency is higher, and there will be no problems such as excessive by-product CO at high temperature and slow hydrogen production efficiency at too low temperature due to uneven temperature.

[0032] Specifically, in this embodiment, the reaction chamber 52 is located in the middle of the inner cavity of the reaction shell, and the catalyst in the reaction chamber 52 includes a carrier and an active component layer supported in the carrier, the carrier includes one or a combination of two or more of silicon carbide, aluminum oxide, silicon dioxide, and titanium oxide, and the active component layer includes one or a combination of two or more of copper, zinc, chromium, nickel, platinum, and palladium. Preferably, in this embodiment, the carrier is silicon carbide.

[0033] like Figure 4 As shown, specifically, in this embodiment, the heating pipe network 56 includes a plurality of cross-arranged and internally interconnected air pipes 561. Each of the air pipes 561 is cross-connected and overlapped to form a mesh structure, and the interior thereof is interconnected to form a plurality of air paths, so that high-temperature air enters the air path and dissipates heat to achieve the purpose of heating the gas in the cavity. The air paths are evenly distributed, so that the heat emitted from each position is the same, and heat is evenly distributed.

[0034] Furthermore, the two heating pipe networks 56 arranged inside and outside are simultaneously connected to an air intake main pipe 563, and high-temperature hot air is introduced into the air intake main pipe 563. After entering from the air intake main pipe 563, the high-temperature air is discharged into each of the heating pipe networks 56, and the heat of the air intake is unified and the heat distribution is more uniform.

[0035] like Figure 3 As shown, the cross section of the heating pipe network is adapted to the distribution shape of the plurality of the inlet branch pipes 57. For example, when the inlet branch pipes 57 in the cavity are distributed in a circular, square or irregular shape, the shape of the heating pipe network is also circular, square or irregular shape, so as to be distributed around all the inlet branch pipes 57, so that the gas discharged from the pipes can be in contact with the high temperature in the largest area.

[0036] Preferably, in this embodiment, the cross-section of the reaction chamber is circular, and therefore, the cross-section of the heating pipe network 56 is also circular.

[0037] It should be noted that, since the several air pipes 561 forming the heating pipe network 56 are cross-arranged, there are gaps between the cross-arrangements of the air pipes 561, so that the several heating pipe networks 56 are honeycomb-shaped or mesh-shaped. In this way, the flow of gas in the cavity will not be hindered. One end of the central gas outlet main pipe 55 is blocked, and the other end is connected to the bottom chamber 53. The bottom chamber 53 is connected to the exhaust port. After the catalytically generated hydrogen mixed gas enters the pipe from the vent hole of the central gas outlet main pipe 55, the hydrogen mixed gas is discharged from the exhaust port under the negative pressure of the exhaust port, and then discharged from the exhaust port to the purification equipment for purification treatment and storage.

[0038] Each of the air inlet branch pipes 57 includes an air outlet end 573 and an air inlet end 571. The air inlet end 571 is arranged close to the air inlet of the reaction chamber 52 and connected to the top chamber 51. The air outlet end 573 discharges the completely vaporized methanol aqueous solution entering from the air inlet end 571. The heating pipe network 56 is arranged around the air outlet end 573 of the air inlet branch pipe 57.

[0039] Preferably, in this embodiment, the gas outlet 573 is made of a porous mesh plate. In this way, the inside and outside of the gas outlet 573 are connected, and the gas enters from the gas inlet 571 and is discharged into the chamber through the gas outlet 573.

[0040] The reforming hydrogen production device provided by the utility model is provided with the heating pipe network 56 which is arranged around the inner and outer circles of the air inlet branch pipe 57, so that the gas discharged from the air inlet branch pipe 57 can quickly come into contact with the heating pipe network 56, thereby quickly heating the gas and accelerating the hydrogen production speed. Moreover, the heating pipe network is distributed around its outlet, and the gas discharged from each position of the air inlet branch pipe 57 can be evenly heated, so the hydrogen production efficiency is higher, and there will be no problems such as excessive by-product CO at high temperature and slow hydrogen production efficiency at too low temperature due to uneven temperature.

[0041] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A reforming hydrogen production device, characterized in that: The invention comprises a methanol water storage tank, a vaporizer connected to the methanol water storage tank for vaporizing the methanol water solution, and a reactor connected to the vaporizer for causing the vaporized methanol water solution from the vaporizer to undergo an endothermic reaction to generate hydrogen. The reactor comprises a reaction shell having a reaction chamber, and a central gas outlet main pipe, a heating pipe network and a plurality of gas inlet branch pipes arranged in the reaction chamber. The central gas outlet main pipe and the gas inlet branch pipes are both provided with air vents penetrating the inner and outer walls thereof. The plurality of gas inlet branch pipes are circumferentially distributed around the central gas outlet main pipe with the axis of the central gas outlet main pipe as the center. The heating pipe network is arranged around the inner and outer circles of the gas inlet branch pipe, and high-temperature hot air is introduced into the heating pipe network.

2. The reforming hydrogen production device according to claim 1, characterized in that: The heating pipe network includes a plurality of gas pipes which are cross-arranged and interconnected internally.

3. The reforming hydrogen production device according to claim 1, characterized in that: The cross section of the heating pipe network is adapted to the distribution shape of the plurality of air intake branch pipes.

4. The reforming hydrogen production device according to claim 3, characterized in that: The cross section of the heating pipe network is circular.

5. The reforming hydrogen production device according to claim 1, characterized in that: The heating pipe network is in a honeycomb shape or a mesh shape.

6. The reforming hydrogen production device according to claim 1, characterized in that: Each of the air inlet branch pipes includes an air outlet end and an air inlet end. The air inlet end is arranged close to the air inlet of the reaction chamber. The air outlet end discharges the completely vaporized methanol aqueous solution entering from the air inlet end. The heating pipe network is arranged around the air outlet end of the air inlet branch pipe.

7. The reforming hydrogen production device according to claim 6, characterized in that: The air outlet end is made of a porous mesh plate.

8. The reforming hydrogen production device according to claim 1, characterized in that: The two heating pipe networks arranged inside and outside are simultaneously connected to an air intake main pipe, and high-temperature air is introduced into the air intake main pipe.

9. The reforming hydrogen production device according to claim 1, characterized in that: The catalyst in the reaction chamber includes a carrier and an active component layer supported in the carrier.

10. The reforming hydrogen production device according to claim 9, characterized in that: The carrier is silicon carbide.

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