Methanol reforming hydrogen production reaction device and reaction system

Abstract

The utility model relates to a methanol reforming hydrogen production reaction device and a methanol reforming hydrogen production reaction system, and belongs to the field of methanol hydrogen production. The methanol reforming hydrogen production reaction device comprises a reaction unit and a vaporization pipe, and the reaction unit comprises a catalytic oxidation reaction pipe and a reforming reaction pipe which are parallel to each other. The vaporization pipe is arranged on one side of the reaction unit and is communicated with the reforming reaction pipe. The catalytic oxidation reaction tube is used for accommodating a mixed gas of methanol and air and a catalytic oxidation catalyst, and is used for a catalytic oxidation reaction of methanol so as to provide heat for the reforming reaction tube and the vaporization tube. The reforming reaction tube is used for accommodating a mixed gas of methanol and water vapor and a reforming catalyst and carrying out catalytic reforming reaction on the methanol and the water vapor; the vaporization pipe is used for containing mixed liquid of methanol and water and absorbing heat to vaporize the mixed liquid of methanol and water. The methanol reforming hydrogen production reaction device provided by the utility model can reduce heat loss.

Description

Technical Field

[0001] The utility model belongs to the field of methanol hydrogen production, and particularly relates to a methanol reforming hydrogen production reaction device and a reaction system. Background Art

[0002] In the prior art, hydrogen is produced through the reforming reaction of methanol. After searching, the applicant found that the utility model patent with patent publication number CN220610304U discloses a new type of methanol hydrogen production tubular reactor including a base, a cylinder, a lower head, an upper head, a methanol water inlet, a synthesis gas outlet, and a heat exchange tube. The outer wall of the cylinder is provided with a heat medium inlet and a heat medium outlet that penetrate the interior of the cylinder. There are multiple heat medium inlets and heat medium outlets. The inner wall of the cylinder is provided with multiple heat exchange partitions. A dividing circular plate perpendicular to the upper tube plate is provided in the cylinder. The dividing circular plate divides the internal space of the cylinder into a first heat exchange chamber and a second heat exchange chamber.

[0003] However, the prior art represented by the above patent is only a single hydrogen production reactor, which requires the heat medium to absorb the heat from the external heat source or the synthesized gas and then enter the device to provide heat to the reforming reaction site. However, there is heat loss during the movement of the heat medium in the pipeline. Utility Model Content

[0004] In view of the above problems, an embodiment of the present application provides a methanol reforming hydrogen production reaction device and a reaction system, which can reduce heat loss.

[0005] In a first aspect, an embodiment of the present application provides a methanol reforming hydrogen production reaction device, comprising a reaction unit and a vaporization tube, wherein the reaction unit comprises a catalytic oxidation reaction tube and a reforming reaction tube parallel to each other. The vaporization tube is arranged on one side of the reaction unit and is connected to the reforming reaction tube. The catalytic oxidation reaction tube is used to accommodate a mixed gas of methanol and air and a catalytic oxidation catalyst, and to supply methanol for catalytic oxidation reaction, so as to provide heat to the reforming reaction tube and the vaporization tube. The reforming reaction tube is used to accommodate a mixed gas of methanol and water vapor and a reforming catalyst, and to supply methanol and water vapor for catalytic reforming reaction. The vaporization tube is used to accommodate a mixed liquid of methanol and water, and to absorb heat to vaporize the mixed liquid of methanol and water.

[0006] In the above technical scheme, a catalytic oxidation reaction tube for accommodating a mixed gas of methanol and air and a catalytic oxidation catalyst and for catalytic oxidation reaction of methanol is arranged in the reaction unit, and a reforming reaction tube for accommodating a mixed gas of methanol and water vapor and a reforming catalyst and for catalytic reforming reaction of methanol and water vapor is arranged in the reaction unit, and the above-mentioned catalytic oxidation reaction tube and reforming reaction tube are arranged in parallel, so that the heat generated by the catalytic oxidation reaction of methanol can be better absorbed by the reforming reaction tube. At the same time, since a vaporization tube is arranged on one side of the reaction unit, part of the heat in the reaction unit that is not absorbed by the reforming reaction tube can be absorbed by the vaporization tube, so that the mixed liquid of methanol and water is vaporized, so as to facilitate the subsequent reforming reaction, thereby improving the utilization rate of the heat discharged from the catalytic oxidation reaction tube and reducing the heat loss.

[0007] In some embodiments, there are multiple catalytic oxidation reaction tubes arranged along a first direction, and there is at least one reforming reaction tube between two adjacent catalytic oxidation reaction tubes along the first direction. The first direction is perpendicular to the axial direction of the catalytic oxidation reaction tubes.

[0008] In the above technical solution, at least one reforming reaction tube is arranged between two catalytic oxidation reaction tubes adjacent to each other along the first direction, so that the reforming reaction tube can fully absorb the heat emitted by the catalytic oxidation reaction tube.

[0009] In some embodiments, the methanol reforming hydrogen production reaction device further includes a support plate. The reaction units are arranged in a plurality along the second direction, the support plate is provided with mounting holes for the catalytic oxidation reaction tube and the reforming reaction tube to pass through, the support plates are arranged in a plurality along the axial direction of the catalytic oxidation reaction tube, and the first direction, the second direction and the axial direction of the catalytic oxidation reaction tube are perpendicular to each other.

[0010] In the above technical solution, the multiple reaction units arranged along the second direction are integrated into one by the support plate, thereby improving the integration of the methanol reforming hydrogen production reaction device and facilitating the installation and transportation of the methanol reforming hydrogen production reaction device.

[0011] In some embodiments, the vaporization tube is coiled and disposed on one side of the reaction unit in the first direction.

[0012] In the above technical solution, on the one hand, the vaporizer tube is arranged on one side of the reaction unit in the first direction, so that the vaporizer tube can be close to the catalytic oxidation reaction tube located at the outermost layer to fully absorb the heat discharged from the catalytic oxidation reaction tube; on the other hand, the vaporizer tube is coiled, thereby increasing the length of the vaporizer tube and increasing the circumferential side area of ​​the vaporizer tube, thereby facilitating the vaporizer tube to absorb the heat discharged from the reaction unit, improving the utilization rate of the heat discharged from the catalytic oxidation reaction tube, and reducing heat loss.

[0013] In some embodiments, the methanol reforming hydrogen production reaction device further comprises a shell and a heat conducting member, wherein the shell has a second accommodating cavity for accommodating the reaction unit and the vaporizing tube. The heat conducting member is used to fill the second accommodating cavity.

[0014] In the above technical solution, by arranging the reaction unit and the vaporization tube in the second accommodating chamber, and arranging a heat conductor in the second accommodating chamber, it is convenient for the catalytic oxidation reaction tube and the reforming reaction tube in the reaction unit, and it is convenient for the catalytic oxidation reaction tube and the vaporization tube in the reaction unit to exchange heat, thereby improving the utilization rate of the heat discharged by the catalytic oxidation reaction tube and reducing the heat loss.

[0015] In some embodiments, along the axial direction of the catalytic oxidation reaction tube, the shell has a first accommodating chamber, a second accommodating chamber, and a third accommodating chamber arranged in sequence, and the shell has an air inlet for methanol and air to enter the first accommodating chamber and an air outlet for exhaust gas from the catalytic oxidation reaction to be discharged from the third accommodating chamber. Both ends of the catalytic oxidation reaction tube are connected to the first accommodating chamber and the third accommodating chamber respectively.

[0016] In the above technical solution, by connecting the two ends of the catalytic oxidation reaction tube with the first accommodating chamber and the third accommodating chamber respectively, on the one hand, methanol and air are mixed through the first accommodating chamber to form a mixed gas of methanol and air, thereby facilitating the catalytic oxidation reaction of methanol in the catalytic oxidation reaction tube; on the other hand, the exhaust gas generated after the reaction in the catalytic oxidation reaction tube is collected through the second accommodating chamber.

[0017] In some embodiments, the methanol reforming hydrogen production reaction device further includes porcelain balls, and a plurality of the porcelain balls are filled in the first containing cavity.

[0018] In the above technical solution, multiple ceramic balls are filled in the first containing cavity so that methanol and air enter the first containing cavity from the air inlet and need to pass through the gaps between the ceramic balls to enter the catalytic oxidation reaction tube, thereby improving the uniformity of the mixing of methanol and air.

[0019] In some embodiments, the methanol reforming hydrogen production reaction device further includes a first connecting pipe and a second connecting pipe. The two ends of the first connecting pipe are respectively connected to the vaporization pipe and the reforming reaction pipe, so that the mixed gas of methanol and water vapor in the vaporization pipe enters the reforming reaction pipe through the first connecting pipe, and the first connecting pipe is arranged outside the shell. The second connecting pipe is connected to the reforming reaction pipe, so that the mixed gas after the reforming reaction in the reforming reaction pipe is discharged from the reforming reaction pipe.

[0020] In the above technical solution, the vaporization tube is connected to the reforming reaction tube through the first connecting tube, and the gas after the reforming reaction is collected through the second connecting tube. The structure is simple and easy to implement.

[0021] In a second aspect, an embodiment of the present application provides a methanol reforming hydrogen production reaction system including the above-mentioned methanol reforming hydrogen production reaction device, a booster pump and an electric heater. The booster pump is connected to the vaporization tube, and the booster pump is used to provide a pressurized methanol and water mixed liquid to the vaporization tube. The electric heater is used to provide heat to the methanol before the methanol enters the catalytic oxidation reaction tube.

[0022] In some embodiments, the methanol reforming hydrogen production reaction system also includes a preheater, and the booster pump is connected to the vaporization tube through the preheater. The preheater is used to receive heat from the exhaust gas of the catalytic oxidation reaction and the mixed gas after the reforming reaction to increase the temperature of the mixed liquid of methanol and water.

[0023] In the above technical solution, the preheater is heated by the tail gas from the catalytic oxidation reaction and the mixed gas after the reforming reaction, thereby further improving the utilization rate of heat and reducing the heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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 these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a methanol reforming hydrogen production reaction device provided in an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the structure of a reaction unit provided in an embodiment of the utility model;

[0027] Figure 3 A schematic diagram of the structure of another reaction unit provided in an embodiment of the utility model;

[0028] Figure 4 for Figure 1 A schematic diagram of the structure of the methanol reforming hydrogen production reaction device in the middle A direction;

[0029] Figure 5 A schematic diagram of the structure of a vaporization tube provided in an embodiment of the utility model;

[0030] Figure 6 A schematic structural diagram of another methanol reforming hydrogen production reaction device provided in an embodiment of the utility model;

[0031] Figure 7 A cross-sectional view of another methanol reforming hydrogen production reaction device provided in an embodiment of the utility model;

[0032] Figure 8 A schematic structural diagram of a methanol reforming hydrogen production reaction system provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0034] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the prior art, hydrogen is produced through the reforming reaction of methanol. During the reforming reaction of methanol, methanol is mainly converted into: CH 3 OH+H 2 O=CO 2 +3H 2 , react to produce hydrogen and carbon dioxide, and the generated hydrogen and carbon dioxide will also pass through: CO 2 +H 2 =CO+H 2 O, and the reaction generates water and carbon monoxide. The above reactions all need to be carried out in a methanol hydrogen tubular reactor.

[0038] After searching, the applicant found that the utility model patent with patent publication number CN220610304U disclosed a new methanol hydrogen tubular reactor including a base, a cylinder, a lower head, an upper head, a methanol water inlet, a synthesis gas outlet, and a heat exchange tube. The outer wall of the cylinder is provided with a heat medium inlet and a heat medium outlet that penetrate the interior of the cylinder. There are multiple heat medium inlets and heat medium outlets. The inner wall of the cylinder is provided with multiple heat exchange partitions. A dividing circular plate perpendicular to the upper tube plate is provided in the cylinder, and the dividing circular plate divides the internal space of the cylinder into a first heat exchange chamber and a second heat exchange chamber.

[0039] However, the prior art represented by the above patent is only a single hydrogen production reactor, which requires the heat medium to absorb the heat from the external heat source or the synthesized gas and then enter the device to provide heat to the reforming reaction site. However, there is heat loss during the movement of the heat medium in the pipeline.

[0040] In order to solve the above technical problems, refer to Figure 1 The embodiment of the present application provides a methanol reforming hydrogen production reaction device 100, including a reaction unit 10 and a vaporization tube 20, wherein the reaction unit 10 includes a catalytic oxidation reaction tube 12 and a reforming reaction tube 11 which are parallel to each other. The vaporization tube 20 is arranged on one side of the reaction unit 10 and is connected to the reforming reaction tube 11. The catalytic oxidation reaction tube 12 is used to accommodate a mixed gas of methanol and air and a catalytic oxidation catalyst, and to provide a catalytic oxidation reaction of methanol to provide heat to the reforming reaction tube 11 and the vaporization tube 20. The reforming reaction tube 11 is used to accommodate a mixed gas of methanol and water vapor and a reforming catalyst, and to provide a catalytic reforming reaction of methanol and water vapor. The vaporization tube 20 is used to accommodate a mixed liquid of methanol and water, and to absorb heat to vaporize the mixed liquid of methanol and water.

[0041] The reaction unit 10 is a component in the methanol reforming hydrogen production reaction device 100 for performing a catalytic oxidation reaction of methanol and air and a reforming reaction of methanol and water vapor, respectively.

[0042] The catalytic oxidation reaction tube 12 is a tubular container of the reaction unit 10, and is used to accommodate a catalytic oxidation catalyst (such as electrolytic silver or pumice silver) and a mixed gas of methanol and air to provide a reaction space for the catalytic oxidation of methanol and air.

[0043] It should be noted that methanol reacts with oxygen in the air through 2CH3OH+O2=2CH3CHO to generate formaldehyde and release a large amount of heat.

[0044] The reforming reaction tube 11 is a tubular container of the reaction unit 10, and is used to accommodate a reforming reaction catalyst (such as a precious metal catalyst and a Pt-based catalyst) and a mixed gas of methanol and water vapor to provide a reaction space for the reforming reaction of methanol and water vapor.

[0045] In some embodiments, reference Figure 2 , the catalytic oxidation reaction tube 12 and the reforming reaction tube 11 in the reaction unit 10 are arranged in sequence along a single direction. Figure 3 The catalytic oxidation reaction tubes 12 in the reaction unit 10 are multiple tubes arranged around the reforming reaction tube 11. Figure 2 and Figure 3 In the embodiment, the positions of the catalytic oxidation reaction tube 12 and the reforming reaction tube 11 can be interchanged.

[0046] The vaporizer tube 20 is a tube body for containing a mixture of methanol and water. It can be understood that the vaporizer tube 20 can absorb the heat released by the catalytic oxidation reaction tube 12 so that the mixture of methanol and water in the vaporizer tube 20 is vaporized into a mixed gas of methanol and water vapor to provide the mixed gas of methanol and water vapor to the reforming reaction tube 11.

[0047] In the present technical solution, a catalytic oxidation reaction tube 12 for accommodating a mixed gas of methanol and air and a catalytic oxidation catalyst and for catalytic oxidation reaction of methanol is arranged in the reaction unit 10, and a reforming reaction tube 11 for accommodating a mixed gas of methanol and water vapor and a reforming catalyst and for catalytic reforming reaction of methanol and water vapor is arranged in the reaction unit 10, and the above-mentioned catalytic oxidation reaction tube 12 and reforming reaction tube 11 are arranged in parallel, so that the heat generated by the catalytic oxidation reaction of methanol can be more fully absorbed by the reforming reaction tube 11. At the same time, since a vaporization tube 20 is arranged on one side of the reaction unit 10, part of the heat in the reaction unit 10 that is not absorbed by the reforming reaction tube 11 can be absorbed by the vaporization tube 20, so that the mixed liquid of methanol and water is vaporized, so as to facilitate the subsequent reforming reaction, thereby improving the utilization rate of the heat discharged from the catalytic oxidation reaction tube 12 and reducing the heat loss.

[0048] According to some embodiments of the present application, referring to Figure 2 There are multiple catalytic oxidation reaction tubes 12 arranged along a first direction Y. Along the first direction Y, there is at least one reforming reaction tube 11 between two adjacent catalytic oxidation reaction tubes 12 . The first direction Y is perpendicular to the axial direction X of the catalytic oxidation reaction tubes 12 .

[0049] In some embodiments, the first direction Y and the axial direction X of the catalytic oxidation reaction tube 12 may be two mutually perpendicular horizontal directions.

[0050] There is at least one reforming reaction tube 11 between two adjacent catalytic oxidation reaction tubes 12 , which can be understood as one, two, three or even more reforming reaction tubes 11 between two adjacent catalytic oxidation reaction tubes 12 .

[0051] Better yet, refer to Figure 2 There is a reforming reaction tube 11 between two adjacent catalytic oxidation reaction tubes 12, so that both sides of any reforming reaction tube 11 in the first direction Y can absorb the heat released by the catalytic oxidation reaction tube 12.

[0052] In the present technical solution, at least one reforming reaction tube 11 is arranged between two adjacent catalytic oxidation reaction tubes 12 along the first direction Y, so that the reforming reaction tube 11 can fully absorb the heat emitted by the catalytic oxidation reaction tube 12 .

[0053] According to some embodiments of the present application, referring to Figure 4 The methanol reforming hydrogen production reaction device 100 further includes a support plate 30. The reaction units 10 are arranged in a plurality along the second direction Z, and the support plate 30 is provided with mounting holes for the catalytic oxidation reaction tube 12 and the reforming reaction tube 11 to pass through. The support plates 30 are arranged in a plurality along the axial direction X of the catalytic oxidation reaction tube 12 at intervals, and the first direction Y, the second direction Z and the axial direction X of the catalytic oxidation reaction tube 12 are perpendicular to each other.

[0054] It can be understood that the reaction units 10 are arranged in a plurality along the second direction Z. On the one hand, the number of catalytic oxidation reaction tubes 12 is increased, thereby increasing the space for the catalytic oxidation reaction of methanol and air, thereby increasing the heat generation of the device; on the other hand, the number of reforming reaction tubes 11 is increased, thereby increasing the space for the reforming reaction of methanol and water vapor, thereby increasing the production of hydrogen; on still another hand, the reforming reaction tube 11 can absorb the heat released by the adjacent catalytic oxidation reaction tubes 12 in the second direction Z, thereby improving the utilization of heat.

[0055] In this technical solution, a plurality of reaction units 10 arranged along the second direction Z are integrated into one by the support plate 30 , thereby improving the integration of the methanol reforming hydrogen production reaction device 100 , thereby facilitating the installation and transportation of the methanol reforming hydrogen production reaction device 100 .

[0056] According to some embodiments of the present application, referring to Figure 4 and Figure 5 The vaporization tube 20 is coiled and arranged on one side of the reaction unit 10 in the first direction Y.

[0057] “The vaporization tube 20 is arranged in a coil” can be understood as the vaporization tube 20 being arranged in a circuitous manner, or can be understood as the vaporization tube 20 being arranged in a coiled manner.

[0058] In some embodiments, reference Figure 4 The vaporization tube 20 includes a straight section 21 and a bent section 22, wherein the straight sections 21 are multiple and parallel and spaced apart along the axial direction X of the catalytic oxidation reaction tube 12, the straight sections 21 extend along the second direction Z, and the bent sections alternately connect the two ends of adjacent straight sections 21.

[0059] In other embodiments, referring to Figure 5 The vaporization tube 20 includes a straight section 21 and a bent section 22, wherein the straight sections 21 are multiple and parallel and spaced apart along the second direction Z. The straight sections 21 are along the axial direction X of the catalytic oxidation reaction tube 12, and the bent sections alternately connect the two ends of adjacent straight sections 21.

[0060] The second direction Z may be parallel to the gravity direction, and the axial direction X of the catalytic oxidation reaction tube 12 , the first direction Y, and the second direction Z are perpendicular to each other.

[0061] In the present technical solution, on the one hand, the vaporizer tube 20 is arranged on one side of the reaction unit 10 in the first direction Y, so that the vaporizer tube 20 can be close to the catalytic oxidation reaction tube 12 located at the outermost layer to fully absorb the heat discharged from the catalytic oxidation reaction tube 12; on the other hand, the vaporizer tube 20 is coiled, thereby increasing the length of the vaporizer tube 20 and increasing the circumferential side area of ​​the vaporizer tube 20, thereby facilitating the vaporizer tube 20 to absorb the heat discharged from the reaction unit 10, thereby improving the utilization rate of the heat discharged from the catalytic oxidation reaction tube 12 and reducing the heat loss.

[0062] According to some embodiments of the present application, referring to Figure 6 The methanol reforming hydrogen production reaction device 100 further includes a shell 40 and a heat conductor (not shown in the figure), and the shell 40 has a second accommodating cavity for accommodating the reaction unit 10 and the vaporization tube 20. The heat conductor (not shown in the figure) is used to fill the second accommodating cavity.

[0063] The housing 40 is a shell for accommodating the reaction unit 10 and the vaporization tube 20 .

[0064] The heat conducting member may be made of metal, and illustratively, the heat conducting member may be aluminum.

[0065] In some embodiments, after the reaction unit 10 and the vaporization tube 20 are placed in the shell 40, aluminum liquid is injected into the shell 40 to fill the gaps between the reforming reaction tube 11, the catalytic oxidation reaction tube 12, the vaporization tube 20 and the inner wall of the first accommodating chamber. After the aluminum liquid solidifies, it forms a heat conductive member.

[0066] In the present technical solution, the reaction unit 10 and the vaporization tube 20 are arranged in the second accommodating chamber, and a heat conductor is arranged in the second accommodating chamber to facilitate the catalytic oxidation reaction tube 12 and the reforming reaction tube 11 in the reaction unit 10, and to facilitate the heat exchange between the catalytic oxidation reaction tube 12 in the reaction unit 10 and the vaporization tube 20, thereby improving the utilization rate of the heat discharged by the catalytic oxidation reaction tube 12 and reducing the heat loss.

[0067] According to some embodiments of the present application, referring to Figure 7 Along the axial direction X of the catalytic oxidation reaction tube 12, the shell 40 has a first accommodation chamber, a second accommodation chamber and a third accommodation chamber arranged in sequence, and the shell 40 has an air inlet 41 for methanol and air to enter the first accommodation chamber and an air outlet 42 for exhaust gas from the catalytic oxidation reaction to be discharged from the third accommodation chamber. Both ends of the catalytic oxidation reaction tube 12 are connected to the first accommodation chamber and the third accommodation chamber respectively.

[0068] The first accommodating chamber, the second accommodating chamber and the third accommodating chamber are independent cavities in the shell 40 .

[0069] Methanol and air enter the first containing chamber through the air inlet 41 to form a mixed gas.

[0070] In the embodiment where there are multiple catalytic oxidation reaction tubes 12, the first accommodating chamber can provide a mixture of methanol and air to the catalytic oxidation reaction tubes 12. The second accommodating chamber can collect the tail gas of the catalytic oxidation reaction of the catalytic oxidation reaction tubes 12 respectively, and collect the tail gas of the catalytic oxidation reaction through the gas outlet 42.

[0071] In the present technical solution, by connecting the two ends of the catalytic oxidation reaction tube 12 with the first accommodating chamber and the third accommodating chamber respectively, on the one hand, methanol and air are mixed through the first accommodating chamber to form a mixed gas of methanol and air, thereby facilitating the catalytic oxidation reaction of methanol in the catalytic oxidation reaction tube 12; on the other hand, the exhaust gas generated after the reaction in the catalytic oxidation reaction tube 12 is collected through the second accommodating chamber.

[0072] According to some embodiments of the present application, referring to Figure 7 The methanol reforming hydrogen production reaction device 100 further includes a porcelain ball (not shown in the figure), and the porcelain ball (not shown in the figure) is a plurality of balls filled in the first accommodation cavity.

[0073] In the present technical solution, multiple ceramic balls are filled in the first accommodating chamber so that methanol and air enter the first accommodating chamber from the air inlet 41 and need to pass through the gaps between the ceramic balls to enter the catalytic oxidation reaction tube 12, thereby improving the uniformity of the mixing of methanol and air.

[0074] According to some embodiments of the present application, referring to Figure 6The methanol reforming hydrogen production reaction device 100 further includes a first connecting pipe 50 and a second connecting pipe 51. The two ends of the first connecting pipe 50 are respectively connected to the vaporization pipe 20 and the reforming reaction pipe 11, so that the mixed gas of methanol and water vapor in the vaporization pipe 20 enters the reforming reaction pipe 11 through the first connecting pipe 50. The first connecting pipe 50 is arranged outside the shell 40. The second connecting pipe 51 is connected to the reforming reaction pipe 11, so that the mixed gas after the reforming reaction in the reforming reaction pipe 11 is discharged from the reforming reaction pipe 11.

[0075] The first connecting pipe 50 is a pipe body connecting the vaporizing pipe 20 and the reforming reaction pipe 11. In some embodiments, the temperature of the mixed gas of methanol and water vapor before the reforming reaction can be detected by the temperature in the first connecting pipe 50, and the pressure of the mixed gas of methanol and water vapor before the reforming reaction can be detected by the pressure in the first connecting pipe 50. The second connecting pipe 51 is a pipe body for collecting the gas after the reforming reaction. In some embodiments, the temperature of the mixed gas generated after the reforming reaction can be detected by the temperature in the second connecting pipe 51, and the pressure of the mixed gas generated after the reforming reaction can be detected by the pressure in the first connecting pipe 50. This facilitates controlling the temperature in the reforming reaction pipe 11 to be within the range of 350°C-450°C, and controlling the reaction pressure to be 2.0-3.0Mpa.

[0076] In the technical solution, the vaporization tube 20 is connected to the reforming reaction tube 11 through the first connecting tube 50, and the gas after the reforming reaction is collected through the second connecting tube 51. The structure is simple and easy to implement.

[0077] According to some embodiments of the present application, referring to Figure 8 The embodiment of the present application provides a methanol reforming hydrogen production reaction system 1000 including the above-mentioned methanol reforming hydrogen production reaction device 100, a booster pump 200 and an electric heater 300. The booster pump 200 is connected to the vaporization tube 20, and the booster pump 200 is used to provide a pressurized mixed liquid of methanol and water to the vaporization tube 20. The electric heater 300 is used to provide heat to the methanol before the methanol enters the catalytic oxidation reaction tube 12.

[0078] According to some embodiments of the present application, the methanol reforming hydrogen production reaction system 1000 also includes a preheater 400, and the boost pump 200 is connected to the vaporization tube 20 through the preheater 400. The preheater 400 is used to receive heat from the exhaust gas of the catalytic oxidation reaction and the mixed gas after the reforming reaction to increase the temperature of the mixed liquid of methanol and water.

[0079] Specifically, the raw material methanol and water are mixed in a ratio of 1.0 to 1.2, and after being pressurized by the booster pump 200, they enter the preheater 400 for preheating. The heat of the preheater 400 comes from the heat of the mixed gas generated after the reforming reaction and the tail gas of the catalytic oxidation reaction. The preheated raw material enters the vaporization tube 20 for heating and vaporization. The heat of the vaporization tube 20 comes from the heat released by the catalytic oxidation of methanol in the catalytic oxidation reaction tube 12. After the methanol-water raw material reaches the temperature and pressure required for the reaction, it enters the reforming reaction tube 11. Under the action of the catalyst, the heat released by the catalytic oxidation of methanol in the catalytic oxidation reaction tube 12 is used as a heat source to carry out the reforming reaction. The reforming reaction temperature is controlled at 350-450°C, and the reaction pressure is controlled at 2.0-3.0Mpa. The mixed gas generated after the reaction includes H2, CO, CO2, H2O, etc., with a molar fraction ratio of approximately 70%, 4.5%, 19.5%, and 6.0%, and the yield of H2 can reach more than 93%. The exhaust gas generated by catalytic oxidation is discharged after heat exchange with the raw material methanol water through the preheater 400. The mixed gas obtained by the reforming reaction is heat exchanged with the raw material methanol water through the preheater 400 before the next step.

[0080] In the present technical solution, the preheater 400 is heated by the tail gas from the catalytic oxidation reaction and the mixed gas after the reforming reaction, thereby further improving the utilization rate of heat and reducing the heat loss.

[0081] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0082] The above embodiments are only used to illustrate the technical solution of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A methanol reforming hydrogen production reaction device, characterized in that: include: A reaction unit, the reaction unit comprising a catalytic oxidation reaction tube and a reforming reaction tube parallel to each other; A vaporization tube, disposed at one side of the reaction unit and connected to the reforming reaction tube; The catalytic oxidation reaction tube is used to contain a mixed gas of methanol and air and a catalytic oxidation catalyst, and is used for catalytic oxidation reaction of methanol to provide heat to the reforming reaction tube and the vaporization tube; The reforming reaction tube is used to contain a mixed gas of methanol and water vapor and a reforming catalyst, and to provide a catalytic reforming reaction of methanol and water vapor; The vaporization tube is used to contain a mixed liquid of methanol and water and absorb heat to vaporize the mixed liquid of methanol and water.

2. The methanol reforming hydrogen production reaction device according to claim 1, characterized in that: The catalytic oxidation reaction tubes are multiple and arranged along a first direction, and there is at least one reforming reaction tube between two adjacent catalytic oxidation reaction tubes along the first direction; The first direction is perpendicular to the axial direction of the catalytic oxidation reaction tube.

3. The methanol reforming hydrogen production reaction device according to claim 2, characterized in that: The methanol reforming hydrogen production reaction device also includes a support plate, the reaction units are multiple and arranged along the second direction, the support plate is provided with mounting holes for the catalytic oxidation reaction tube and the reforming reaction tube to pass through, the support plates are multiple and arranged at intervals along the axial direction of the catalytic oxidation reaction tube, and the first direction, the second direction and the axial direction of the catalytic oxidation reaction tube are perpendicular to each other.

4. The methanol reforming hydrogen production reaction device according to claim 2, characterized in that: The vaporization tube is coiled and arranged on one side of the reaction unit in the first direction.

5. The methanol reforming hydrogen production reaction device according to claim 1, characterized in that: The methanol reforming hydrogen production reaction device also includes: A housing having a second accommodating chamber for accommodating the reaction unit and the vaporization tube; A heat conducting member is used to fill the second accommodating cavity.

6. The methanol reforming hydrogen production reaction device according to claim 5, characterized in that: Along the axial direction of the catalytic oxidation reaction tube, the shell has a first accommodating chamber, a second accommodating chamber and a third accommodating chamber arranged in sequence, and the shell has an air inlet for methanol and air to enter the first accommodating chamber and an air outlet for exhaust gas from the catalytic oxidation reaction to be discharged from the third accommodating chamber; Two ends of the catalytic oxidation reaction tube are communicated with the first accommodating chamber and the third accommodating chamber respectively.

7. The methanol reforming hydrogen production reaction device according to claim 6, characterized in that: The methanol reforming hydrogen production reaction device further includes porcelain balls, and the porcelain balls are multiple and filled in the first containing cavity.

8. The methanol reforming hydrogen production reaction device according to claim 5, characterized in that: The methanol reforming hydrogen production reaction device also includes: a first connecting pipe, both ends of which are respectively connected to the vaporizing pipe and the reforming reaction pipe, so that the mixed gas of methanol and water vapor in the vaporizing pipe enters the reforming reaction pipe through the first connecting pipe, and the first connecting pipe is arranged outside the shell; The second connecting pipe is connected to the reforming reaction pipe so as to allow the mixed gas after the reforming reaction in the reforming reaction pipe to be discharged from the reforming reaction pipe.

9. A methanol reforming hydrogen production reaction system, characterized in that: include: The methanol reforming hydrogen production reaction device according to any one of claims 1 to 8; A booster pump, connected to the vaporization tube, and used to provide a pressurized mixed liquid of methanol and water to the vaporization tube; The electric heater is used to provide heat to the methanol before the methanol enters the catalytic oxidation reaction tube.

10. A methanol reforming hydrogen production reaction system according to claim 9, characterized in that: The methanol reforming hydrogen production reaction system also includes: A preheater, the boost pump is connected to the vaporization pipe through the preheater, and the preheater is used to receive heat from the tail gas of the catalytic oxidation reaction and the mixed gas after the reforming reaction to increase the temperature of the mixed liquid of methanol and water.

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