A methanol hydrogen power generation system and hydrogen energy automobile

Abstract

The application discloses a methanol hydrogen production and power generation system and a hydrogen energy automobile. The methanol hydrogen production and power generation system comprises a methanol hydrogen production device and a fuel cell. The methanol hydrogen production device comprises a methanol hydrogen production reactor. The reactor comprises a cylinder body, an upper head, a lower head and at least one group of column pipe groups. The column pipe groups are arranged in the cylinder body. The upper head and the lower head are arranged at two ends of the cylinder body. The column pipe groups comprise a plurality of reaction column pipes. The reaction column pipes are spiral. The plurality of reaction column pipes of the column pipe groups have the same arc length and total length. The plurality of reaction column pipes are combined in a winding mode to form the column pipe groups. The technical scheme re-designs the structure of the reactor, greatly reduces the volume of the reactor, directly converts hydrogen combustion into electric energy for storage, further reduces the storage volume of the power generation system, and directly provides driving force when the mobile device needs.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of methanol hydrogen production, and particularly relates to a methanol hydrogen production power generation system and a hydrogen energy automobile. BACKGROUND

[0002] With the maturity and stability of the methanol hydrogen production process, the hydrogen energy industry is widely promoted and applied. At present, the application of hydrogen energy is not only in the fields of vehicles, distributed power generation, ships and the like, but also in industrial applications for replacing other traditional energy, especially in the hydrogen metallurgy, kiln, heat treatment and incineration industries in the past two years. Since conventional methanol hydrogen production devices are applied to large chemical enterprises, there are no special requirements for the equipment volume and land occupation area, but in the application of methanol hydrogen production to hydrogen production and hydrogenation integrated stations and mobile devices and industrial equipment, there are quite high requirements for the equipment volume.

[0003] Patent CN220610304U discloses a novel methanol hydrogen production tubular reactor. The position where the reforming hydrogen production reaction occurs in the reactor is a straight pipe type tube, i.e. a heat exchange tube. The heat exchange tube exchanges heat with a heat medium to make the methanol water vapor flowing into the heat exchange tube to occur a reforming hydrogen production reaction. Although the tubular reactor increases the flow path of the heat medium to increase the heat exchange rate, it still cannot simultaneously meet the miniaturization of the methanol hydrogen production reactor and the high yield of the hydrogen production amount. At the same time, the structure of the heat exchange tube in the patent document will cause the problem of high temperature at the periphery and low temperature in the middle of the heat exchange tube, thereby causing insufficient utilization of the catalyst, incomplete methanol cracking and serious influence on the hydrogen production rate.

[0004] Patent CN22105988U discloses a methanol hydrogen production system and a vehicle-mounted methanol hydrogen production device. Although the patent reduces the volume of the methanol hydrogen production device by arranging a preheating pipeline in the methanol hydrogen production reactor, the reaction tube in the reactor still adopts a traditional straight pipe type or a layered filling. The problems of uneven heating of the reactants, insufficient contact of the catalyst with the methanol water vapor and incomplete reaction still exist.

[0005] Therefore, it is necessary to further improve the existing structure of the methanol hydrogen production reactor, further improve the hydrogen production rate of the methanol hydrogen production reaction and further reduce the volume of the reactor, so that it is suitable for hydrogen energy automobiles. SUMMARY

[0006] In view of the deficiencies of the prior art, the application provides the following technical solutions:

[0007] In one aspect, a methanol hydrogen production power generation system is provided, comprising a methanol hydrogen production device and a fuel cell, the methanol hydrogen production device comprising a methanol hydrogen production reactor, the methanol hydrogen production reactor comprising a cylinder, an upper head, a lower head and at least one group of column tube groups, the column tube groups being arranged in the cylinder, the upper head and the lower head being arranged at both ends of the cylinder, characterized in that the column tube groups comprise a plurality of reaction column tubes, the number of the reaction column tubes being 4-6, the reaction column tubes being spiral type, the reaction column tubes constituting the column tube groups having the same arc length and total length; the reaction column tubes are combined in a winding manner to form the column tube groups; the spiral structure of the reaction column tubes conforms to the Archimedes spiral structure principle; the methanol hydrogen production reactor further comprises a gasification pipe, and a heat conducting medium inlet and a heat conducting medium outlet arranged at both ends of the cylinder; the gasification pipe is arranged in a spiral winding manner between the column tube groups and the cylinder; the gasification pipe comprises a spiral pipe, the spiral pipe being arranged in a winding manner between the outside of the column tube groups and the inside of the cylinder; the spiral pipe comprises a plurality of spiral column tubes, the plurality of spiral column tubes having the same pitch and rotation angle; the methanol hydrogen production reactor further comprises a heat exchange device, the heat exchange device comprising a methanol water pipe and a heat exchange pipe; the methanol water pipe and the heat exchange pipe are both wound on the outside of the cylinder; the methanol water pipe and the heat exchange pipe are in a concentric sleeve connection manner; the methanol water pipe comprises a methanol water pipe inlet and a methanol water pipe outlet; the heat exchange pipe comprises a heat exchange pipe inlet and a heat exchange pipe outlet.

[0008] Preferably, the gasification pipe further comprises a spiral inlet manifold and a spiral outlet manifold arranged at both ends of the spiral pipe respectively, the spiral inlet manifold converging the inlet ends of the plurality of spiral column tubes; the spiral outlet manifold converging the outlet ends of the plurality of spiral column tubes.

[0009] Preferably, the upper head comprises an upper head cavity, an upper head plate and a methanol water vapor inlet; the lower head comprises a lower head cavity, a lower head plate and a reforming mixed gas outlet; a plurality of upper head holes are arranged in the upper head plate, the upper head holes, the upper head cavity and the methanol water vapor inlet being in communication; a plurality of lower head holes are arranged in the lower head plate, the lower head holes, the lower head cavity and the reforming mixed gas outlet being in communication; the upper and lower ends of the column tube groups are in communication with the upper head holes and the lower head holes respectively.

[0010] Preferably, the methanol hydrogen production reactor further comprises a first connecting pipe, a second connecting pipe and a third connecting pipe; the two ends of the first connecting pipe are connected to the spiral outlet manifold and the methanol water vapor inlet respectively; the two ends of the second connecting pipe are connected to the methanol water pipe outlet and the spiral inlet manifold respectively; the two ends of the third connecting pipe are connected to the reforming mixed gas outlet and the heat exchange pipe inlet respectively.

[0011] Preferably, the outer side of the cylinder is provided with a preheated methanol water inlet and a methanol water vapor outlet; the spiral inlet manifold is connected with the preheated methanol water inlet; and the spiral outlet manifold is connected with the methanol water vapor outlet.

[0012] In another aspect, the application also provides a hydrogen energy automobile, which comprises a vehicle body, an electric motor arranged in the vehicle body, a methanol hydrogen production and power generation system arranged in the vehicle body, and a fuel cell connected with the electric motor.

[0013] Compared with the prior art, the application has the following advantages:

[0014] 1) The purified hydrogen obtained by the methanol hydrogen production reactor is converted into electric energy in the fuel cell for storage, thereby greatly reducing the storage space of the product, and the electric motor provides the electric energy in the fuel cell to the mobile device when needed;

[0015] 2) The methanol hydrogen production reactor in the application adopts a spiral reaction column, especially a reaction column in accordance with the Archimedes spiral structure principle. On the one hand, the increase in the chord length can greatly increase the catalyst filling amount of the reactor and increase the residence time of hydrogen in the reaction column, so that the reaction is more complete. On the other hand, the temperature distribution in the column group is more uniform, and the heat exchange effect is also better. Meanwhile, the reaction column group in the application adopts the Archimedes spiral structure and forms a column group in a winding manner. Therefore, the reaction column group occupies a smaller volume in the reactor under the same total length, and the number of each reaction column group can be set to 2 or more according to the needs of the hydrogen production reaction.

[0016] 3) The spiral gasification pipe arranged in the reactor in the application can not only provide heat energy for the reforming reaction, but also make the vaporization of the methanol water vapor more sufficient, thereby improving the heat energy utilization rate and the hydrogen production rate;

[0017] 4) The heat exchange device arranged in the reactor in the application can preheat the methanol water mixture solution by heat exchange with the high-temperature reforming mixed gas, thereby further improving the heat utilization rate of the reactor;

[0018] 5) The connecting pipe and the interface arranged outside the cylinder of the reactor in the application make the assembly and disassembly of the methanol hydrogen production reactor more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1a FIG. 1 is a structural schematic diagram of a hydrogen energy automobile in the application;

[0020] Figure 1b FIG. 2 is a sectional structure diagram of a methanol hydrogen production reactor in the application;

[0021] Figure 2 Figure 1 is a schematic diagram of the upper head structure of the methanol hydrogen production reactor of the present application;

[0022] Figure 3 Figure 2 is a schematic diagram of the lower head structure of the methanol hydrogen production reactor of the present application;

[0023] Figure 4 Figure 3 is a schematic diagram of the tube bundle structure of the present application;

[0024] Figure 5 Figure 4 is a schematic diagram of the reaction tube structure of the present application;

[0025] Figure 6 Figure 5 is a sectional view of the tube bundle of the present application;

[0026] Figure 7 Figure 6 is a schematic diagram of the tube bundle spot welding position of the present application;

[0027] Figure 8 Figure 7 is a schematic diagram of the gasification tube structure of the present application;

[0028] Figure 9 Figure 8 is a sectional view of the gasification tube of the present application;

[0029] Figure 10 Figure 9 is a schematic diagram of the gasification tube installation of the present application;

[0030] Figure 11 Figure 10 is a front view of the heat exchange device and connecting tube of the present application;

[0031] Figure 12 Figure 11 is a sectional view of the heat exchange device of the present application;

[0032] Figure 13 Figure 12 is a side view of the heat exchange device and connecting tube of the present application;

[0033] Figure 14 Figure 13 is another side view of the heat exchange device and connecting tube of the present application. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0035] Example 1

[0036] The present embodiment provides a methanol hydrogen production power generation system, as shown in Figure 1aAs shown, it comprises a methanol hydrogen production device, a fuel cell 100; the methanol hydrogen production device is connected with the fuel cell 100. Specifically, the purified hydrogen outlet of the methanol hydrogen production device is connected with the fuel cell 100, and the purified hydrogen is combusted in the fuel cell 100 to convert chemical energy into electrical energy, and the electrical energy is output to an electrical equipment, such as a vehicle, etc.

[0037] In the present application, the methanol hydrogen production device comprises a methanol hydrogen production reactor 200, a hydrogen purifier 300 and a methanol water raw material tank 400. The methanol water raw material is transported from the methanol water raw material tank 400 to the methanol hydrogen production reactor 300 through a raw material pump 500, the reforming mixed gas obtained by the methanol hydrogen production reactor 200 is transported to the hydrogen purifier 300, and the purified hydrogen and the mixed tail gas are obtained after purification by the hydrogen purifier 300, the purified hydrogen is transported to the fuel cell 100, and the hydrogen energy is converted into electrical energy by the fuel cell 100, and the electrical energy is stored and output.

[0038] Specifically, as shown in Figure 1b As shown, the methanol hydrogen production reactor 200 comprises at least one group of column tube groups 1, a cylinder body 2, an upper head 3 and a lower head 4; the upper head 3 and the lower head 4 are respectively arranged at both ends of the cylinder body 2; the column tube group 1 is arranged inside the cylinder body, which comprises a gas inlet 11 and a gas outlet 12; the gas inlet 11 of the column tube group 1 is in communication with the upper head 3, and the gas outlet 12 is in communication with the lower head 4.

[0039] Specifically, as shown in Figure 2 The upper head 3 comprises an upper head cavity 31, an upper head plate 32 and a methanol water vapor inlet 33, the upper head 3 is connected with the cylinder body 2 through the upper head plate 32, a plurality of upper head holes 34 are arranged in the upper head plate 32, and the upper head holes 34 are in communication with the gas inlets 11 of the column tube groups 1.

[0040] As shown in Figure 3 The lower head 4 comprises a lower head cavity 41, a lower head plate 42 and a reforming mixed gas outlet 43, the lower head 4 is connected with the cylinder body 2 through the lower head plate 42, a plurality of lower head holes 44 are arranged in the lower head plate 42, and the lower head holes 44 are in communication with the gas outlets 12 of the column tube groups 1.

[0041] As shown in FIGS. 1-3, the two ends of the column tube group 1 are fixedly connected with the upper head plate 32 and the lower head plate 42 respectively, and the column tube group 1 is filled with a reforming reaction catalyst, so that the methanol water is cracked at this position to prepare hydrogen. As shown in Figures 4-6 The column tube group 1 is composed of a plurality of reaction column tubes 10, each of which is a spiral type, which comprises a column tube body 101, a first opening 102 and a second opening 103; as shown in Figure 7As shown in the figure, the arc length and the total length of each reaction tube 10 are consistent, and the reaction tube bodies 101 of each reaction tube 10 are combined together in a winding manner to form a tube group 1, wherein the first openings 102 of each reaction tube 10 are combined to form a gas inlet 11, and the second openings 102 of each reaction tube are combined to form a gas outlet 12. In order to avoid the disconnection of the winding reaction tube 10, the contact points between each reaction tube 10 need to be fixedly connected, and in this embodiment, spot welding is used for fixation, as shown in the figure. Figure 7 At the same time, the two ends of the tube group 1 can also be fixedly connected with the upper sealing plate 32 and the lower sealing plate 42 by welding.

[0042] In addition, the spiral angle and the spiral distance of each reaction tube 10 are controlled to ensure that the length of each reaction tube 10 is consistent. At the same time, the winding mode of each reaction tube 10 in the tube group 1 can be adjusted according to the process requirements. The material of the reaction tube 1 is preferably a stainless steel tube.

[0043] As a preferred specific embodiment of the present application, by adjusting the spiral angle and the spiral distance of the reaction tube, the reaction tube 10 can have a chord length of 3.5 m under a length of 1.5 m, and under the same height, the catalyst loading amount of a single reaction tube 10 can be greatly improved. The tube group 1 is preferably composed of 4 to 6 reaction tubes 10, and the tube group 1 made in this range can simultaneously consider the heat transfer efficiency of the reactor and the equipment volume. At the same time, the tube group 1 is designed in a module, so that the catalyst loading amount of the tube group 1 can be prepared according to the needs.

[0044] Further, as shown in the figure, the spiral structure of the reaction tube 10 conforms to the Archimedes spiral structure principle. Figure 5

[0045] Table 1 Comparison of heat exchange effects of the tube group of the present application and the traditional straight tube

[0046] The tube bundle of the present invention Conventional straight tube Methanol water inlet temperature, °C 120 120 Methanol water outlet temperature, °C 273 241 Thermal conducting medium inlet temperature, °C 280 280 Thermal conducting medium outlet temperature, °C 276.4 279.8 Heat exchange efficiency, % 95.6 76.2

[0047] From the content of Table 1 above, under the same heat medium temperature and the same heat exchange time, the heat exchange efficiency of the reaction tube and the tube group made of the Archimedes spiral structure is improved by nearly 20% compared with the traditional straight tube. It can be seen that the use of the tube group of the present application improves the heat exchange efficiency of the methanol hydrogen production reactor. Therefore, compared with the traditional straight tube, the reactor of the present application can reduce the circulation amount of the heat medium.

[0048] Compared with the traditional straight tube, the reactor of the present application can reduce the circulation amount of the heat medium.

[0049] ​In operation, the vaporized methanol-water mixture flows into the upper sealing cavity 31 through the methanol-water vapor inlet 33 of the upper sealing head 3, then flows into the gas inlet 11 of the column tube group 1 through the upper sealing hole 34 in the upper sealing plate 32, and then flows into each reaction column tube 10 of the column tube group 1, and then performs a reforming reaction to produce hydrogen in each reaction column tube 10, so as to obtain a reforming mixed gas, which flows out through the gas outlet 12, the lower sealing hole 44, the lower sealing cavity 41, and then the reforming mixed gas outlet 43 in the lower sealing head 4, and then enters the next process.

[0050] Thus, the power generation system in the embodiment directly converts hydrogen energy into electric energy, reduces the hydrogen storage space, and is more suitable for mobile devices. Meanwhile, in the technical scheme, each spiral reaction column tube 10 is combined in a winding manner to form the column tube group 1, compared with the conventional linear column tube, the catalyst filling amount of the reaction column tube 10 in the embodiment is 1.5-2 times more than that of the conventional column tube reactor under the same height size; and compared with the conventional column tube reactor, the volume of the reactor in the embodiment is smaller and the heat transfer efficiency is higher under the condition of the same catalyst filling amount; meanwhile, the reactor in the embodiment has a significant improvement in the catalyst volume space velocity, reaction efficiency and residence time; not only reduces the volume of the methanol-to-hydrogen reactor, but also improves the reaction efficiency, effectively reduces the investment cost and land area.

[0051] Embodiment 2:

[0052] The difference between this embodiment and embodiment 1 is that, as shown in Figure 10 Fig. 1, the methanol-to-hydrogen reactor further comprises a gasification pipe 5, a heat conducting medium inlet 6 and a heat conducting medium outlet 7; as shown in Fig. 1, the gap between the inner wall of the cylinder 2, the gasification pipe 5 and the column tube group 2 forms a heat conducting medium area 20; the gasification pipe 5 is arranged between the column tube group 1 and the cylinder 2.

[0053] The heat conducting medium inlet 6 and the heat conducting medium outlet 7 are arranged at the upper and lower ends of the cylinder 2, specifically, the heat conducting medium inlet 6 is arranged at one end of the cylinder 2 close to the lower sealing head 4, and the heat conducting medium outlet 7 is arranged at one end of the cylinder 2 close to the upper sealing head 3. The heat conducting medium inlet 6 and the heat conducting medium outlet 7 make the heat conducting medium flow into the heat conducting medium area 20 in the reactor and exchange heat in the area, so that the methanol-water vapor is completely vaporized.

[0054] As shown in Figures 8-9As shown, the gasification pipe 5 comprises a spiral pipe 51, a spiral inlet manifold 52 and a spiral outlet manifold 53. The spiral pipe 51 is a cylindrical spring-like structure, which is arranged between the tube group 1 and the cylinder 2 in a spiral winding manner. The spiral pipe 51 comprises a plurality of spiral tube groups 511, which have the same pitch and rotation angle. In particular, the plurality of spiral tube groups 511 are manufactured in the same pitch and angle, and then combined together to form an integral spiral pipe 51.

[0055] As shown in the figure, Figure 9 The spiral inlet manifold 52 and the spiral outlet manifold 53 are arranged at the two ends of the spiral pipe 51 respectively, so as to collect the inlets or outlets of the plurality of spiral tube groups 511 into one inlet or outlet. The spiral inlet manifold 52 is used for introducing the methanol water mixture, and the spiral outlet manifold 53 is communicated with the methanol water vapor inlet 33 of the upper head 3. Preferably, the spiral tube groups 511 are made of stainless steel pipes; the spiral inlet manifold 52 and the spiral outlet manifold 53 are fixedly connected with the two ends of the spiral pipe 51 by welding or other methods, so as to form an integral whole of the plurality of spiral tube groups 511, thereby increasing the overall rigidity and strength of the gasification pipe 5.

[0056] In this embodiment, the gasification pipe 5 is arranged in the remaining space in the cylinder 2, which further reduces the volume of the methanol hydrogen production device. Meanwhile, in this embodiment, the mixed tail gas is used as the heat conducting medium, which enters the cylinder 2 through the heat conducting medium inlet 6, and then exchanges heat with the gasification pipe 5 and the tube group 1, so as to achieve the purpose of recycling the heat in the mixed tail gas, which further improves the energy utilization rate of the entire power generation system. Therefore, in this embodiment, the reforming mixed gas obtained from the methanol hydrogen production reactor 200 is purified by the hydrogen purifier 300, and then the obtained hydrogen flows into the fuel cell 100, and the remaining mixed tail gas flows into the methanol hydrogen production reactor 200 through the reforming hydrogen pipeline 600 and the heat conducting medium inlet 6, and exchanges heat with the preheated methanol water in the heat conducting medium area 20, and finally flows out of the methanol hydrogen production reactor 200 through the heat conducting medium outlet 7, and then flows out of the power generation system.

[0057] In operation, the heat conducting medium flows into the reactor through the heat conducting medium inlet 6, and flows out of the methanol hydrogen production reactor 200 through the heat conducting medium outlet 7. At the same time, the methanol water mixture flows into the spiral pipe 51 through the spiral inlet manifold 52, and exchanges heat with the heat conducting medium flowing in the heat conducting medium area 20 in the spiral pipe 51, so as to make the methanol water vapor sufficiently gasified, and then flow along the spiral pipe 51 to the spiral outlet manifold 53, and then flow to the methanol water vapor inlet 33 through the spiral outlet manifold 53, and then flow into each reaction tube 10 in the tube group 1 through the upper head 31, and then perform the methanol hydrogen production reaction in the tube group 1.

[0058] Thus, in the structural design of the present embodiment, on one hand, the reactor is heated by the heat-conducting medium to reach the reforming reaction temperature, and on the other hand, the methanol water vapor is heated to be vaporized so as to be able to carry out the reforming reaction. Meanwhile, by adding the gasification pipe 5 in the reactor, the effective heat exchange area of the reactor is increased, the heat transfer efficiency is improved, and the methanol water cracking is more sufficient.

[0059] Embodiment 3:

[0060] The difference between this embodiment and Embodiments 1 or 2 is that, as shown in Figures 10-14 the methanol-to-hydrogen reactor 200 is further provided with a heat exchange device 8 for heat exchange between the reforming mixed gas and the methanol water solution, so as to make full use of the heat energy of the reactor, thereby improving the heat utilization rate.

[0061] As shown in Figure 12 the heat exchange device 8 includes a methanol water pipe 81 and a heat exchange pipe 82, and the methanol water pipe 81 and the heat exchange pipe 82 are in a concentric sleeve connection mode. When sleeved, the methanol water pipe 81 can be arranged on the outside of the heat exchange pipe 82, or the methanol water pipe 81 can be arranged on the inside of the heat exchange pipe 82.

[0062] For example, in the present embodiment, the methanol water pipe 81 is sleeved on the inside of the heat exchange pipe 82, the methanol water pipe 81 is used for passing the methanol water mixed solution, and the heat exchange pipe 82 is used for passing the reforming mixed gas; the methanol water pipe 81 and the heat exchange pipe 82 are wound on the outer wall of the cylinder body 2. When heat exchanged, the reforming mixed gas flows from the bottom of the cylinder body 2 upwards, and the methanol water solution flows from the top of the cylinder body 2 downwards, and the methanol water solution and the reforming mixed gas are heat exchanged by heat conduction.

[0063] Specifically, as shown in Figures 11-14 the methanol water pipe 81 in the heat exchange device 8 includes a methanol water pipe inlet 811 and a methanol water pipe outlet 812, and the heat exchange pipe 82 includes a heat exchange pipe inlet 821 and a heat exchange pipe outlet 822. The methanol water pipe inlet 811 is used for passing the methanol water solution, and the methanol water pipe outlet 812 is in communication with the spiral inlet manifold 52; the heat exchange pipe inlet 821 is in communication with the reforming mixed gas outlet 43 in the lower head 4; and the heat exchange pipe outlet 822 sends the cooled reforming mixed gas to the next process.

[0064] In operation, the methanol water solution flows into the methanol water pipe 81 of the heat exchange device 8 through the methanol water pipe inlet 811; at the same time, the reforming mixed gas flows into the heat exchange pipe 82 through the heat exchange pipe inlet 821 after flowing out of the tube group 1 through the reforming mixed gas outlet 43; after the heat exchange between the methanol water solution and the reforming mixed gas in the heat exchange device 8, the preheated methanol water solution flows out of the methanol water pipe outlet 812, flows into the spiral pipe 51 through the spiral inlet manifold 52, and exchanges heat with the heat conducting medium in the spiral pipe 51, so that the preheated methanol water solution is further heated and vaporized to flow into the reaction tube 10 to perform the reforming reaction for hydrogen production.

[0065] Through the technical scheme of the embodiment, the large amount of heat in the reforming mixed gas can be recycled and utilized, so that the heat utilization rate is improved and energy is saved.

[0066] Embodiment 4:

[0067] The embodiment differs from the embodiments 1 or 2 or 3 in that, as shown in Figures 10-14 the methanol hydrogen production reactor 200 further comprises a first connecting pipe 91, a second connecting pipe 92 and a third connecting pipe 93.

[0068] As shown in Figure 11 the first connecting pipe 91 is used to introduce the methanol water vapor vaporized in the vaporization pipe 5 into the upper head 3 to perform the methanol hydrogen production reaction, that is, the two ends of the first connecting pipe 91 are connected to the spiral outlet manifold 52 and the methanol water vapor inlet 33, respectively. The second connecting pipe 92 is used to make the preheated methanol water flow into the vaporization pipe 5 to further vaporize the methanol water solution, that is, the two ends of the second connecting pipe 92 are connected to the methanol water pipe outlet 812 and the spiral inlet manifold 51, respectively. The third connecting pipe 93 is used to make the reforming mixed gas flow into the heat exchange pipe 82 to preheat the methanol water solution, that is, the two ends of the third connecting pipe 93 are connected to the reforming mixed gas outlet 43 and the heat exchange pipe inlet 821, respectively.

[0069] Specifically, as shown in Figures 10-11 the barrel 2 is further provided with a preheated methanol water inlet 21 and a methanol water vapor outlet 22, and the spiral inlet manifold 51 and the spiral outlet manifold 52 at the two ends of the vaporization pipe 5 are inserted into the preheated methanol water inlet 21 and the methanol water vapor outlet 22, respectively, so that the methanol water vapor can be introduced into the tube group 2. Specifically, the preheated methanol water inlet 21 is in communication with the spiral inlet manifold 51, and the methanol water vapor outlet 22 is in communication with the methanol water vapor inlet 33 in the upper head 3. At this time, the two ends of the first connecting pipe 91 are connected to the methanol water vapor outlet 22 and the methanol water vapor inlet 33 in the upper head 3, respectively; the two ends of the second connecting pipe 92 are connected to the methanol water pipe outlet 812 and the preheated methanol water inlet 21, respectively; and the two ends of the third connecting pipe 93 are connected to the reforming mixed gas outlet 43 in the lower head 4 and the heat exchange pipe inlet 821, respectively.

[0070] In addition, ceramic balls 94 are respectively installed in the upper sealing cavity 31 of the upper end cap 3 and the lower sealing cavity 41 of the lower end cap 4 to improve the distribution of methanol water vapor and reformed gas mixture in the upper or lower sealing cavity, respectively. At the same time, a bracket 95 is also provided below the lower end cap 4 to provide support for each connecting pipe.

[0071] During operation, the methanol-water solution flows into methanol water pipe 81 through methanol water inlet 811, where it exchanges heat with the reformed gas mixture. Then, it flows from methanol water pipe outlet 812 through second connecting pipe 92 into preheated methanol water inlet 21 of cylinder 2, and then through spiral inlet manifold 52 into spiral pipe 51, where it exchanges heat with the heat medium. Next, it flows through spiral outlet manifold 53 to methanol vapor outlet 22 of cylinder 2, then through first connecting pipe 91 to methanol vapor inlet 33 of upper head 3, and finally into reaction tube 10 for reforming and hydrogen production. The resulting reformed gas mixture flows out through reformed gas outlet 43 of lower head 4, and then through third connecting pipe 93 to heat exchange tube 82.

[0072] Example 5:

[0073] like Figure 1a As shown, this embodiment provides a hydrogen fuel cell vehicle, including a vehicle body 700 and an electric motor 800. The electric motor 800 is located inside the vehicle body 700 to drive the vehicle body 700 to move. The vehicle body 700 is also equipped with a methanol-to-hydrogen power generation system as described in any one of embodiments 1-4 above. The fuel cell 100 in the methanol-to-hydrogen power generation system is connected to the electric motor 800 to provide electrical energy to the electric motor 800 and further drive the vehicle body 700 to move through the electric motor 800.

[0074] It should be noted that the technical features in embodiments 1 to 5 above can be combined arbitrarily, and the resulting technical solutions all fall within the protection scope of this application. Furthermore, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0075] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A methanol hydrogen production and power generation system, comprising a methanol hydrogen production device and a fuel cell, the methanol hydrogen production device comprising a methanol hydrogen production reactor, the methanol hydrogen production reactor comprising a cylinder, an upper head, a lower head and at least one group of tube banks, the group of tube banks being arranged in the cylinder, the upper head and the lower head being arranged at both ends of the cylinder, characterized in that, The column group comprises multiple reaction columns, the number of the reaction columns is 4-6, the reaction columns are spiral, the multiple reaction columns of the column group have the same arc length and total length, and the multiple reaction columns are combined in a tightly wound manner to form the column group, and the spiral structure of the reaction columns conforms to the Archimedes spiral structure principle. The upper head comprises an upper head cavity, an upper head plate, and a methanol water vapor inlet, and the lower head comprises a lower head cavity, a lower head plate, and a reforming mixed gas outlet. The methanol hydrogen production reactor further comprises a gasification pipe, and a heat conducting medium inlet and a heat conducting medium outlet arranged at the upper and lower ends of the cylinder, the gasification pipe is arranged between the column group and the cylinder in a spiral winding manner, the gasification pipe comprises a spiral pipe and a spiral inlet manifold and a spiral outlet manifold arranged at the two ends of the spiral pipe respectively, the spiral pipe is arranged between the outside of the column group and the inside of the cylinder in a winding manner, and the spiral pipe comprises multiple spiral columns having the same pitch and rotation angle. The methanol hydrogen production reactor further comprises a heat exchange device, the heat exchange device comprises a methanol water pipe and a heat exchange pipe, the methanol water pipe and the heat exchange pipe are arranged outside the cylinder in a winding manner, the methanol water pipe and the heat exchange pipe are in a concentric sleeve connection mode, the methanol water pipe comprises a methanol water pipe inlet and a methanol water pipe outlet, and the heat exchange pipe comprises a heat exchange pipe inlet and a heat exchange pipe outlet. The methanol hydrogen production reactor further comprises a first connecting pipe, a second connecting pipe, and a third connecting pipe, the two ends of the first connecting pipe are connected to the spiral outlet manifold and the methanol water vapor inlet respectively, the two ends of the second connecting pipe are connected to the methanol water pipe outlet and the spiral inlet manifold respectively, and the two ends of the third connecting pipe are connected to the reforming mixed gas outlet and the heat exchange pipe inlet respectively.

2. The power generation system of claim 1, wherein, The spiral inlet manifold collects the inlet ends of the multiple spiral columns, and the spiral outlet manifold collects the outlet ends of the multiple spiral columns.

3. The power generation system of claim 1, wherein, A plurality of upper head holes are arranged in the upper head plate, the upper head holes, the upper head cavity, and the methanol water vapor inlet are in communication, a plurality of lower head holes are arranged in the lower head plate, the lower head holes, the lower head cavity, and the reforming mixed gas outlet are in communication, and the upper and lower ends of the column group are in communication with the upper head holes and the lower head holes respectively.

4. The power generation system of claim 1, wherein, The outside of the cylinder is provided with a preheated methanol water inlet and a methanol water vapor outlet, the spiral inlet manifold is connected to the preheated methanol water inlet, and the spiral outlet manifold is connected to the methanol water vapor outlet.

5. A hydrogen fuel cell vehicle, comprising a vehicle body and an electric motor, wherein the electric motor is disposed within the vehicle body, characterized in that, The vehicle body is further provided with the methanol hydrogen production power generation system according to any one of claims 1-4, and the fuel cell is connected to the electric motor.

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