Reaction carrier and methanol hydrogen production device

Abstract

The utility model relates to a reaction carrier which can be applied to a methanol hydrogen production device, the reaction carrier comprises a reaction unit arranged along a fluid flowing direction, the reaction unit comprises corrugated plates and strip-shaped plates, the plurality of strip-shaped plates are spirally arranged, and the corrugated plates are arranged between the adjacent strip-shaped plates. The corrugated plate is connected with the strip-shaped plates on the two sides through the wave crests and the wave troughs to form a fluid channel allowing fluid to be catalyzed to pass through, a catalyst used for promoting fluid cracking is arranged in the fluid channel, the attachment area of the catalyst is greatly increased through the arrangement of the corrugated plate, and then the contact area of the catalyst and the fluid is increased; meanwhile, the fluid can form complex streaming after entering the fluid channel, so that the technical effect of improving the catalytic cracking reaction efficiency is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, in particular to a reaction carrier and a methanol hydrogen production device. Background Art

[0002] Under the background of "green chemistry", catalytic cracking reactions and equipment have gradually become key research fields. For example, by catalytically cracking methanol to produce hydrogen, there is almost no CO2 emission and no other toxic and harmful substances emission during the methanol steam reforming process for hydrogen production. Moreover, its raw materials are widely sourced and renewable, environmentally friendly, and large-scale production of hydrogen can be achieved. However, the reaction chamber of traditional methanol hydrogen production machines has obvious deficiencies in terms of reaction efficiency, which limits its popularization in practical applications.

[0003] Therefore, there is an urgent need for a reaction carrier and a methanol hydrogen production device with high hydrogen production efficiency. Summary of the Utility Model

[0004] To solve the above problems, the utility model provides a reaction carrier. A fluid channel is formed by interconnected strip plates and corrugated plates. The corrugated plates provide more attachment space for the catalyst, thereby increasing the contact area between the catalyst and the fluid, and achieving the technical effect of improving the catalytic cracking reaction efficiency.

[0005] To achieve the above object, the utility model provides the following solution:

[0006] A reaction carrier includes reaction units arranged along the fluid flow direction. The reaction units include corrugated plates and strip plates. A plurality of the strip plates are spirally arranged, and corrugated plates are arranged between adjacent strip plates. The corrugated plates are connected to the strip plates on both sides through wave crests and wave troughs, and a fluid channel for the fluid to be catalyzed to pass through is formed between the corrugated plates and the strip plates. A catalyst for promoting fluid cracking is arranged in the fluid channel.

[0007] Preferably, a plurality of the reaction units are provided, and the fluid channels of any two adjacent reaction units are arranged in a staggered manner.

[0008] The utility model also provides a methanol hydrogen production device using the above reaction carrier, including: a reaction chamber, the reaction chamber includes at least one reaction cavity, the reaction carrier is installed in the reaction cavity, and one end of the reaction cavity is communicated with a methanol supply source.

[0009] Preferably, the reaction chamber further includes a vaporization cavity, the reaction cavity is communicated with the methanol supply source through the vaporization cavity, and a heater is arranged in the vaporization cavity.

[0010] Preferably, a spraying device is arranged between the vaporization chamber and the methanol supply source. The spraying device includes a spraying pipe communicated with the methanol supply source. The axis of the spraying pipe is perpendicular to the extending direction of the fluid channel. Spraying holes are arranged at the bottom of the spraying pipe. A spraying plate is arranged below the spraying pipe, and through holes are uniformly arranged on the spraying plate.

[0011] Preferably, there are three reaction chambers, and the three reaction chambers are arranged side by side, and the adjacent reaction chambers are connected end to end.

[0012] Preferably, the methanol hydrogen production device further includes a heating plate, and heating plates are arranged on both sides of the reaction chamber.

[0013] Preferably, heat insulation cotton is arranged on the inner wall of the reaction chamber.

[0014] Preferably, a heat exchanger is arranged between the reaction chamber and the methanol supply source.

[0015] Preferably, a connecting part for connecting with a target rack is arranged on the reaction chamber, and the connecting part is connected with the target rack by bolts.

[0016] The utility model has achieved the following technical effects compared with the prior art:

[0017] The reaction carrier provided by this application is applied in the field of methanol cracking to produce hydrogen, such as a methanol hydrogen production device. Multiple strip plates of the reaction carrier are spirally arranged, and the corrugated plates between the strip plates are connected to the strip plates, forming a fluid channel through which fluid can pass. The arrangement of the corrugated plates greatly increases the attachment area of the catalyst, thereby increasing the contact area between the catalyst and the fluid. At the same time, the fluid can form a complex flow around after entering the fluid channel, thereby achieving the technical effect of improving the catalytic cracking reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Attached Figure 1 is a partially enlarged schematic cross-sectional view of the reaction carrier;

[0020] Attached Figure 2 is a cross-sectional view showing the staggered arrangement of the fluid channels of two adjacent reaction units;

[0021] Attached Figure 3 is a schematic diagram of the methanol hydrogen production device;

[0022] Attached Figure 4 is a schematic connection diagram of the spray device and the heat exchanger;

[0023] Among them, 1, corrugated plate; 2, strip plate; 3, fluid channel; 4, vaporization chamber; 5, spray pipe; 6, spray plate; 7, through hole; 8, heating plate; 9, heat exchanger; 10, connection part; 11, first reaction chamber; 12, second reaction chamber; 13, third reaction chamber. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] The purpose of the present invention is to provide a reaction carrier. By forming a fluid channel through the interconnected strip plate and corrugated plate, the contact area between the catalyst and the fluid can be increased, and the technical effect of improving the catalytic cracking reaction efficiency is achieved.

[0026] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0027] Referring to Figures 1-4 , a reaction carrier disclosed in an embodiment of the present invention, a reaction unit arranged along the fluid flow direction, the reaction unit includes: a corrugated plate 1 and a strip plate 2, a plurality of strip plates 2 are spirally arranged, and a certain gap is left between any two adjacent strip plates 2. A corrugated plate 1 in a wavy shape is arranged in the gap between two adjacent strip plates 2. The wave peaks and wave valleys of the corrugated plate 1 are connected to the strip plates 2 on both sides thereof, and a fluid channel 3 for the fluid to be catalyzed to pass through is formed between the corrugated plate 1 and the strip plate 2. A catalyst for promoting fluid cracking is arranged in the fluid channel 3. The arrangement of the corrugated plate 1 greatly increases the attachment space of the catalyst, thereby increasing the contact area between the catalyst and the fluid to be catalyzed, and improving the reaction efficiency when the fluid flows through the fluid channel 3.

[0028] As a preferred embodiment, a plurality of reaction units are provided, and the fluid channels 3 of any two adjacent reaction units are arranged in a staggered manner. When the fluid enters the downstream reaction unit from the upstream reaction unit, due to the staggered arrangement of the fluid channels 3, the cross-sections of the corrugated plate 1 and the strip plate 2 and the connection points of the corrugated plate 1 and the strip plate 2 will act as obstacles to hinder the air flow from continuing to flow along the original path. Under the action of the upstream pressure, the fluid will bypass the obstacles and continue to flow downstream during the process of hitting the obstacles, thereby generating complex flow-around, further increasing the contact area between the fluid and the catalyst, and at the same time prolonging the contact time between the fluid and the catalyst, further improving the reaction efficiency of the fluid, and making the catalytic reaction more sufficient and thorough.

[0029] Preferably, the corrugated plate 1 and the strip plate 2 are connected by welding. Welding has the advantages of good connectivity and high structural strength, ensuring the stable connection between the corrugated plate 1 and the strip plate 2, and ensuring the stability during the use of the reaction carrier.

[0030] As a preferred embodiment, adjacent reaction units are connected by welding, and more preferably, the welding method is specifically brazing.

[0031] As Figure 3 shown, the present invention also discloses a methanol hydrogen production device using the above reaction carrier, including: a reaction chamber, the reaction chamber includes at least one reaction cavity, the reaction carrier is installed in the reaction cavity, the inlet end of the reaction cavity is communicated with a methanol supply source, and the methanol provided by the methanol supply source can enter the reaction cavity and pass through the fluid channel 3 of the reaction carrier. During the process of passing through the fluid channel 3, the methanol contacts with a catalyst that promotes the cracking of methanol. The catalyst can greatly accelerate the catalytic cracking reaction of methanol and improve the efficiency of methanol catalytic cracking. Under the action of the catalyst, methanol vapor undergoes cracking to generate a large amount of hydrogen.

[0032] It can be understood that: the methanol supply source is provided with a pressure supply device that provides driving force for the methanol.

[0033] Preferably, the catalyst that promotes the cracking of methanol is firmly attached to the surface of the corrugated plate 1 through an adhesive. The catalyst and the corrugated plate 1 have sufficient connection strength, ensuring stable performance even in a vibrating environment, thereby effectively avoiding the problem that the catalyst falls off due to vibration, resulting in a reduction in the efficiency of the catalytic cracking reaction, that is, effectively avoiding the influence of vibration on the catalytic cracking reaction.

[0034] As a preferred embodiment, the reaction chamber further includes a vaporization chamber 4, which is disposed between the reaction chamber and the methanol supply source. The reaction chamber is connected to the methanol supply source through the vaporization chamber 4. The methanol provided by the methanol supply source first enters the vaporization chamber 4. The vaporization chamber 4 is provided with a heater. Under the action of the heater, methanol can be effectively vaporized in the vaporization chamber 4. The vaporized methanol gas can undergo a cracking reaction faster under the action of the catalyst, thereby improving the production rate of hydrogen.

[0035] Preferably, in order to further improve the vaporization efficiency of the vaporization chamber 4, a reaction carrier is also provided in the vaporization chamber 4. It should be noted that no catalyst needs to be provided in the fluid channel 3 of the reaction carrier in the vaporization chamber 4.

[0036] As a preferred embodiment, a spraying device is provided between the vaporization chamber 4 and the methanol supply source. The spraying device includes a spraying pipe 5 connected to the methanol supply source. The axis of the spraying pipe 5 is perpendicular to the extending direction of the fluid channel 3. The bottom of the spraying pipe 5 is provided with spraying holes. A spraying plate 6 is provided below the spraying pipe 5. The spraying plate 6 is uniformly provided with through holes 7. The spraying pipe 5 can atomize the methanol provided by the methanol supply end into small methanol droplets. The methanol droplets sprayed by the spraying pipe 5 can be uniformly guided into the fluid channel 3 through the through holes 7 on the spraying plate 6. Through the spraying device, on the one hand, the atomization degree of methanol can be improved to improve the hydrogen production efficiency, and on the other hand, methanol can enter the vaporization chamber 4 evenly, avoiding the problem of methanol accumulation.

[0037] Preferably, the through hole 7 is a circular hole.

[0038] Furthermore, the through hole 7 is a kidney-shaped hole.

[0039] As a preferred manner, three reaction chambers are provided. The three reaction chambers are arranged side by side. For the convenience of understanding, the three reaction chambers are numbered respectively as: the first reaction chamber 11, the second reaction chamber 12, and the third reaction chamber 13. Among them, the top of the first reaction chamber 11 is connected to the top of the second reaction chamber 12, and the bottom of the second reaction chamber 12 is connected to the bottom of the third reaction chamber 13, thereby forming a serpentine arrangement with the head and tail connected, effectively extending the reaction path of methanol, enabling methanol to complete catalytic cracking more deeply, and improving the hydrogen production amount.

[0040] It can be understood that when three reaction chambers are provided, the bottom of the first reaction chamber 11 is connected to the bottom of the vaporization chamber 4, and the vaporization chamber 4 is connected to the three reaction chambers with the head and tail connected.

[0041] As an implementation manner, the methanol hydrogen production device further includes a heating plate 8. The heating plate 8 is an electric heating plate 8. Heating plates 8 are arranged on both sides of the reaction chamber. The carrier is heated by the heating plates 8 to increase the reaction rate of methanol. Further, two adjacent reaction chambers share one heating plate 8, which reduces the production cost and improves the energy utilization rate.

[0042] Of course, the reaction chamber and the vaporization chamber 4 can also share one heating plate 8.

[0043] As a preferred manner, heat insulating cotton is arranged on the inner wall of the reaction chamber. The heat insulating cotton can form a closed heat insulation layer around the reaction chamber and the vaporization chamber for heat insulation.

[0044] Further, the reaction chamber is connected by multiple partition plates. Adjacent partition plates are connected in a bolt connection form. The bolt connection has extremely high stability and can prevent the equipment from shifting or moving during operation. Preferably, a sealing treatment is performed between adjacent partition plates.

[0045] As a preferred manner, a heat exchanger 9 is arranged between the reaction chamber and the methanol supply source. The heat exchanger 9 has a temperature-rising circuit. The methanol provided by the methanol supply source flows through the temperature-rising circuit of the heat exchanger 9 and enters the reaction chamber. In this process, the methanol can be preliminarily preheated to promote the vaporization of methanol in the subsequent process.

[0046] Further, the heat exchanger 9 has a temperature-lowering circuit. The outlet end of the reaction chamber is communicated with the temperature-lowering circuit of the heat exchanger 9. Thus, the hydrogen gas generated by cracking can be cooled by the heat exchanger 9 to facilitate the subsequent collection of hydrogen gas.

[0047] Further, the temperature-rising circuit and the heat exchange pipeline can exchange heat to use the heat absorbed by the heat exchange pipeline for the temperature rise of methanol, reducing the energy consumption required for methanol preheating.

[0048] As a preferred manner, a connecting portion 10 for connecting with a target rack is arranged on the reaction chamber. The connecting portion 10 and the target rack are connected by bolts. Further, the reaction chamber is applied in a vehicle-mounted environment. The target rack is a vehicle frame. The bolt-connected partition plates effectively avoid the problem that vibration affects the stability of the device. At the same time, the vaporization chamber 4 and the reaction chamber are arranged side by side, which can effectively reduce the volume and weight of the reaction chamber. In addition, the corrugated plate 1 and the strip-shaped plate 2 connected by welding have extremely strong connection strength, enabling the reaction chamber to better adapt to the vehicle-mounted environment and effectively improving the stability and safety of the reaction chamber.

[0049] In a vehicle environment, with a methanol pump as the pressure supply device, when the methanol engine is cold-started, the engine electronic control unit receives a cold-start signal. According to the preset start-up procedure, the engine electronic control unit controls the methanol pump to adjust the injection amount of methanol. In the cold-start stage, to ensure sufficient methanol supply, the engine electronic control unit will command the methanol pump to increase the injection amount. Methanol is ejected from the methanol pump and enters the heat exchanger 9. The heat exchanger 9 controls the heating temperature. The methanol coming out of the heat exchanger 9 enters the vaporization chamber 4. In the vaporization chamber 4, the methanol is further heated to complete the vaporization process. The vaporized methanol vapor is sent into the reaction chamber under the action of pressure and quickly undergoes a catalytic cracking reaction under the action of a catalyst, generating a large amount of hydrogen and carbon monoxide. The catalytic cracking reaction absorbs a large amount of heat. To ensure that the reaction process proceeds within a suitable temperature range, the electric heating plate 8 can adjust its own heating power in real time according to the temperature of the reaction chamber, so that the temperature in the reaction chamber rises rapidly, thereby ensuring that the temperature in the reaction chamber is stably maintained within an ideal range. The gas generated by the reaction is finally cooled by the cooling circuit of the heat exchanger 9 and then enters the gas collection device for subsequent utilization.

[0050] The internal pressure of the reaction circuit formed by connecting the vaporization chamber and the reaction chamber can be achieved through a pressure-regulating valve on the cooling circuit. When the pressure in the reaction circuit is too high, the opening of the pressure-regulating valve can be appropriately increased to reduce the pressure in the reaction circuit. When the pressure is too low, the opening of the pressure-regulating valve can be appropriately reduced or the pressure-regulating valve can be closed to increase the pressure in the reaction circuit.

[0051] Preferably, the electric heating plate 8 is set as a plate type. Electrodes are arranged above the electric heating plate 8. The internal structure includes a mica heating sheet and two aluminum plates. The aluminum plates are fixedly arranged on both sides of the mica heating sheet through fasteners. When the vehicle starts, the current will flow into the electric heating plate 8 through the regulation of the whole vehicle and the electric control cabinet. The mica heating sheet starts to heat up. The aluminum plate has excellent thermal conductivity and can evenly transfer the heat transmitted by the mica heating sheet.

[0052] Preferably, the reaction carrier is preferably made of high-temperature resistant and corrosion-resistant metal materials such as stainless steel, copper alloy, and titanium. Further, other high-temperature resistant and corrosion-resistant materials can also be used to make the reaction carrier, such as silicon carbide.

[0053] Adaptability changes made according to actual needs are all within the protection scope of the present utility model.

[0054] It should be noted that for those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A reaction carrier, characterized in that: The invention comprises a reaction unit arranged along the flow direction of a fluid, the reaction unit comprising a corrugated plate (1) and a strip plate (2), a plurality of the strip plates (2) being arranged in a spiral, a corrugated plate (1) being arranged between adjacent strip plates (2), the corrugated plate (1) being connected to the strip plates (2) on both sides via wave crests and wave troughs, a fluid channel (3) for the catalytic fluid to pass through being formed between the corrugated plate (1) and the strip plates (2), and a catalyst for promoting fluid cracking being arranged in the fluid channel (3).

2. The reaction carrier according to claim 1, characterized in that: A plurality of reaction units are provided, and the fluid channels (3) of any two adjacent reaction units are staggered.

3. A methanol hydrogen production device using the reaction carrier according to claim 1 or 2, characterized in that: include: The reaction chamber comprises at least one reaction chamber, the reaction carrier is installed in the reaction chamber, and one end of the reaction chamber is connected to a methanol supply source.

4. The methanol-to-hydrogen device according to claim 3, characterized in that: The reaction chamber further comprises a vaporization chamber (4), the reaction chamber is connected to the methanol supply source via the vaporization chamber (4), and the vaporization chamber (4) is provided with a heater.

5. The methanol-to-hydrogen device according to claim 4, characterized in that: A spray device is provided between the vaporization chamber (4) and the methanol supply source, the spray device comprising a spray pipe (5) connected to the methanol supply source, the axis of the spray pipe (5) being perpendicular to the extension direction of the fluid channel (3), a spray hole being provided at the bottom of the spray pipe (5), a spray plate (6) being provided below the spray pipe (5), and through holes (7) being evenly provided on the spray plate (6).

6. The methanol-to-hydrogen device according to claim 3, characterized in that: There are three reaction chambers, which are arranged side by side, and adjacent reaction chambers are connected end to end.

7. The methanol-to-hydrogen device according to claim 6, characterized in that: The methanol-to-hydrogen device also includes a heating plate (8), and heating plates (8) are arranged on both sides of the reaction chamber.

8. The methanol-to-hydrogen device according to claim 6, characterized in that: The inner wall of the reaction chamber is provided with heat-insulating cotton.

9. The methanol-to-hydrogen device according to claim 3, characterized in that: A heat exchanger (9) is provided between the reaction chamber and the methanol supply source.

10. The methanol-to-hydrogen device according to any one of claims 3 to 9, characterized in that: The reaction chamber is provided with a connecting portion (10) for connecting to a target frame, and the connecting portion (10) is connected to the target frame by bolts.

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