A reaction vessel for use in hydrogen production systems

Abstract

This utility model discloses a reaction vessel for a hydrogen production system, relating to the field of new energy hydrogen production technology. It includes a steam vaporization tank, a cracking reaction tank, and a cooler connected in sequence. A circulating pressurization system connects the cracking reaction tank and the steam vaporization tank. A hydrogen production catalyst is installed inside the cracking reaction tank, and the gas flow output from the cracking reaction tank is returned to the steam vaporization tank via the circulating pressurization system. A steam return tank is connected to the upper end of the steam vaporization tank. Compared with the prior art, this utility model delivers the gas flow from the steam vaporization tank to the cracking reaction tank during operation, where it reacts with the hydrogen production catalyst. The reacted gas flow is then returned to the steam vaporization tank via the circulating pressurization system, achieving a circulating hydrogen production effect and increasing the hydrogen concentration. Simultaneously, the steam return tank reduces heat loss from the steam vaporization tank.

Description

Technical Field

[0001] This utility model relates to the field of new energy hydrogen production technology, and in particular to a reaction tank used in a hydrogen production system. Background Technology

[0002] Hydrogen is a widely available renewable energy source, derived from water, natural gas, methanol, ethanol, and biomass. Due to the depletion of energy resources and environmental pollution caused by fossil fuels, the demand for clean energy is increasingly evident. Hydrogen has a high calorific value and produces pollution-free byproducts, making it a clean and sustainable energy source. Current hydrogen production methods mainly include steam and catalyst reaction, fossil fuel reforming, water electrolysis, photocatalytic water splitting, biomass hydrogen production, and plasma hydrogen production.

[0003] The prior art (Announcement No.: CN119113541A, Announcement Date: 2024.12.13) discloses a methanol-to-hydrogen system, which utilizes a double-layer structure of a vaporizer. The heat transfer oil is in the inner tank, which is more than half full. Methanol gas is on top and liquid is on the bottom between the inner and outer tanks, and it is uniformly vaporized into methanol vapor. The gas in the upper part is superheated and enters the cracking reaction tank. The cracking reaction tank has multiple steel pipes filled with catalyst. The methanol vapor has a long gas path and is uniformly cracked into mixed hydrogen gas under the action of the catalyst.

[0004] In the above scheme, the gas flow from the steam vaporization tank is fed into the steel pipe in the cracking reactor, allowing the gas and the catalyst in the steel pipe to react with each other to produce hydrogen. However, the gas flow may still be insufficient when passing through the steel pipe once, resulting in a low hydrogen concentration. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.

[0006] A reaction vessel for a hydrogen production system includes a vaporization tank, a cracking reaction tank, and a cooler connected in sequence; a circulating pressurization system is connected between the cracking reaction tank and the vaporization tank; a hydrogen production catalyst is installed inside the cracking reaction tank; the gas flow output from the cracking reaction tank is returned to the vaporization tank through the circulating pressurization system; a steam return tank is connected to the upper end of the vaporization tank.

[0007] Furthermore: the circulating pressurization system is connected between the pyrolysis reactor and the steam vaporization tank, and the circulating pressurization system includes an atmospheric pressure deoxygenated water tank and a booster pump arranged in series.

[0008] Furthermore: there are two or more booster pumps, and the two or more booster pumps are connected in series.

[0009] Furthermore: the pyrolysis reactor includes a pyrolysis tank, a bottom cover, and several steel pipes. The bottom cover is fixedly installed at the bottom end of the pyrolysis tank, and a venting support plate is fixedly installed between the bottom cover and the pyrolysis tank. Several steel pipes are evenly arranged and installed in the pyrolysis tank, with the bottom ends of the steel pipes resting on the venting support plate. The steel pipes are filled with hydrogen production catalyst, and the venting support plate blocks the hydrogen production catalyst inside the steel pipes.

[0010] Furthermore: an oil inlet is formed on the outer side of the bottom end of the cracking reactor, and an oil outlet is formed on the outer side of the upper end of the cracking reactor. The oil inlet delivers heat transfer oil into the cracking reactor, and the heat transfer oil heats the hydrogen production catalyst through a steel pipe.

[0011] Furthermore: a partition is fixedly installed in the middle of the bottom cover, and the air inlet and air outlet are separated by the partition. The bottom cover is formed with an air inlet and an air outlet. The steam vaporization tank is connected to the air inlet, and the cooler is connected to the air outlet. The air inlet passes through several steel pipes on the left side of the partition and then enters several steel pipes on the right side of the partition. The gas in the several steel pipes on the right side of the partition is output through the air outlet.

[0012] Furthermore: a top cover is fixedly installed on the top of the pyrolysis tank, and a top plate is fixedly installed on the top of several steel pipes. Several positioning holes are formed on the top plate, and the upper ends of the steel pipes are installed in the positioning holes with a clearance fit. The top cover is installed above the several positioning holes, and the upper ends of several steel pipes on the left side of the partition are conveyed to several steel pipes on the right side of the partition through the top cover.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The gas flow from the vaporizer is delivered to the cracking reactor and reacts with the hydrogen production catalyst. The gas flow after the reaction is returned to the vaporizer through the circulating pressurization system to achieve the effect of circulating hydrogen production and increase the hydrogen concentration. 2. The installation of a steam reflux tank can reduce the heat loss of the steam vaporization tank.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the left-side structure of this utility model; Figure 3 This is a schematic diagram of the right-side structure of this utility model; Figure 4 This is a cross-sectional structural diagram of the present invention; Figure 5 This is a cross-sectional structural diagram of the present invention from another direction.

[0017] The diagram shows: 1. Steam vaporization tank; 2. Cracking reaction tank; 21. Cracking tank; 22. Bottom cover; 23. Steel pipe; 3. Cooler; 4. Circulating pressurization system; 41. Atmospheric pressure deoxygenated water tank; 42. Booster pump; 5. Ventilation support plate; 6. Baffle plate; 7. Air inlet; 8. Air outlet; 9. Top cover; 10. Top plate; 11. Positioning hole; 12. Oil inlet; 13. Oil outlet; 14. Thermal oil reflux tank; 15. Thermal oil boiler; 16. Pressurization hole; 17. Steam reflux tank. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0019] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example 1, as Figure 1-5 As shown, a reaction vessel of this utility model applied to a hydrogen production system includes a vaporization tank 1, a cracking reaction tank 2, and a cooler 3 connected in sequence; a circulation booster system 4 is connected between the cracking reaction tank 2 and the vaporization tank 1; a hydrogen production catalyst is installed in the cracking reaction tank 2; the gas flow output from the cracking reaction tank 2 is returned to the vaporization tank 1 through the circulation booster system 4; a vapor return tank 17 is connected to the upper end of the vaporization tank 1. The principle is as follows: the gas flow from the vaporizer 1 is delivered to the cracking reaction tank 2 and reacts with the hydrogen production catalyst. The gas flow after the reaction is returned to the vaporizer 1 through the circulating pressurization system 4, thereby achieving the effect of circulating hydrogen production and increasing the hydrogen concentration. The setting of the steam return tank 17 can reduce the heat loss of the vaporizer 1.

[0024] Furthermore: the circulating pressurization system 4 is connected between the cracking reactor and the steam vaporization tank 1. The circulating pressurization system 4 includes an atmospheric pressure deoxygenated water tank 41 and a booster pump 42 arranged in series. The atmospheric pressure deoxygenated water tank 41 can remove oxygen, prevent the steam vaporization tank 1 from oxidizing, and ensure its service life. The booster pump 42 can enhance the circulating pressure of the gas flow and achieve the effect of circulating hydrogen production reaction.

[0025] Furthermore: there are two or more booster pumps 42, and the two or more booster pumps 42 are connected in series; this can ensure the airflow pressure.

[0026] Furthermore: the pyrolysis reactor 2 includes a pyrolysis tank 21, a bottom cover 22, and several steel pipes 23. The bottom cover 22 is fixedly installed at the bottom end of the pyrolysis tank 21, and a venting support plate 5 is fixedly installed between the bottom cover 22 and the pyrolysis tank 21. Several steel pipes 23 are evenly arranged and installed in the pyrolysis tank 21, with the bottom end of the steel pipe 23 resting on the venting support plate 5. The hydrogen production catalyst is filled inside the steel pipe 23, and the venting support plate 5 blocks the hydrogen production catalyst inside the steel pipe 23. The hydrogen production catalyst can be fully reacted with the hydrogen production catalyst inside the steel pipe 23 by being input into the steel pipe 23. Since the steel pipe 23 is relatively long, it can achieve a full hydrogen production operation.

[0027] Furthermore, an oil inlet 12 is formed on the outer side of the bottom end of the cracking reactor 2, and an oil outlet 13 is formed on the outer side of the upper end of the cracking reactor 2. The oil inlet 12 delivers heat transfer oil into the cracking reactor 2, and the heat transfer oil heats the hydrogen production catalyst through the steel pipe 23; this can ensure the reaction temperature, thereby ensuring the effect of full reaction and hydrogen production.

[0028] Furthermore: A partition 6 is fixedly installed in the middle of the bottom cover 22, and the air inlet 7 and the air outlet 8 are separated by the partition 6. The bottom cover 22 is formed with the air inlet 7 and the air outlet 8. The vaporization tank 1 is connected to the air inlet 7, and the cooler 3 is connected to the air outlet 8. The air inlet 7 passes through several steel pipes 23 on the left side of the partition 6 and then enters several steel pipes 23 on the right side of the partition 6. The gas in the several steel pipes 23 on the right side of the partition 6 is output through the air outlet 8. The partition 6 can be used to separate the airflow, allowing the airflow to pass through the steel pipes 23 on the left and the steel pipes 23 on the right respectively, so as to fully react with the hydrogen production catalyst and ensure the hydrogen production concentration.

[0029] Furthermore: A top cover 9 is fixedly installed at the top of the pyrolysis tank 21, and a top plate 10 is fixedly installed at the top of several steel pipes 23. Several positioning holes 11 are formed on the top plate 10. The upper ends of the steel pipes 23 are fitted into the positioning holes 11 with a clearance fit. The top cover 9 covers and is installed above the several positioning holes 11. The upper ends of several steel pipes 23 on the left side of the partition 6 are conveyed to several steel pipes 23 on the right side of the partition 6 through the top cover 9; thus realizing stable airflow and ensuring hydrogen production effect.

[0030] Example 2, as Figure 1-5 As shown, a methanol-to-hydrogen system of the present invention includes a vaporization tank 1, a cracking reaction tank 2, and a cooler 3 connected in sequence. It also includes a circulating pressurization system 4, which is connected between the cracking reactor and the steam vaporization tank 1. The circulating pressurization system 4 includes an atmospheric pressure deoxygenated water tank 41 and a booster pump 42 arranged in series. There are two or more booster pumps 42, and the two or more booster pumps 42 are connected in series with each other. The pyrolysis reactor 2 includes a pyrolysis tank 21, a bottom cover 22, and several steel pipes 23. The bottom cover 22 is fixedly installed at the bottom end of the pyrolysis tank 21. A ventilated support plate 5 is fixedly installed between the bottom cover 22 and the pyrolysis tank 21. Several steel pipes 23 are evenly arranged and installed in the pyrolysis tank 21. The bottom end of the steel pipe 23 rests on the ventilated support plate 5. The steel pipe 23 is filled with a hydrogen production catalyst. The ventilated support plate 5 blocks the hydrogen production catalyst inside the steel pipe 23. A partition 6 is fixedly installed in the middle of the bottom cover 22. The air inlet 7 and the air outlet 8 are separated by the partition 6. The bottom cover 22 is formed with an air inlet 7 and an air outlet 8. The steam vaporization tank 1 is connected to the air inlet 7, and the cooler 3 is connected to the air outlet 8. The air inlet 7 passes through several steel pipes 23 on the left side of the partition 6 and then enters several steel pipes 23 on the right side of the partition 6. The gas in the several steel pipes 23 on the right side of the partition 6 is output through the air outlet 8. The principle is as follows: The gas pressure in the input steam vaporization tank 1 is increased by the circulating pressurization system 4. The gas flow is output from the cracking reactor and has a high heat value. This heat can heat the steam vaporization tank 1 and reduce energy consumption. After the gas flow passes through the steel pipe 23 of the cracking reactor 2, there may still be insufficient reaction. At this time, the channel from the cracking reactor 2 to the cooler 3 is closed, and the gas flow is returned to the steam vaporization tank 1 by the circulating pressurization system 4 to circulate the gas flow, which can pressurize and increase the hydrogen concentration, allowing the gas to react fully. Finally, the cooler 3 is used to cool down the gas flow before output.

[0031] Furthermore: a top cover 9 is fixedly installed on the top of the pyrolysis tank 21, and a top plate 10 is fixedly installed on the top of several steel pipes 23. Several positioning holes 11 are formed on the top plate 10. The upper ends of the steel pipes 23 are installed in the positioning holes 11 with a clearance fit, and the top cover 9 is installed on top of the several positioning holes 11; this can ensure the stable installation of the steel pipes 23 in the pyrolysis tank 21.

[0032] Furthermore: the upper ends of several steel pipes 23 on the left side of the partition 6 are conveyed to several steel pipes 23 on the right side of the partition 6 through the top cover 9; the top cover 9 is used to realize gas flow, so that the gas can fully react with the hydrogen production catalyst in the steel pipes 23.

[0033] Furthermore: an oil inlet 12 is formed on the outer side of the bottom end of the cracking reactor 2, and an oil outlet 13 is formed on the outer side of the upper end of the cracking reactor 2. The oil inlet 12 delivers heat transfer oil into the cracking reactor 2, and the heat transfer oil heats the hydrogen production catalyst through the steel pipe 23; this can effectively heat the catalyst, thereby ensuring that the gas can fully react after passing through the steel pipe 23.

[0034] Furthermore, the upper end of the pyrolysis reaction vessel 2 is connected to a heat transfer oil return tank 14, which allows the heat transfer oil to be refluxed and heated to ensure the temperature of the heat transfer oil in the pyrolysis vessel 21.

[0035] Furthermore, a thermal oil boiler 15 is connected to the thermal oil return tank 14, which can be used to heat the thermal oil.

[0036] Furthermore: the air outlet 8 of the bottom cover 22 is connected to the atmospheric pressure deoxygenated water tank 41, and the outer side of the vaporization tank 1 is formed with a pressure boosting hole 16. The atmospheric pressure deoxygenated water tank 41 is connected to the pressure boosting hole 16 through two pressure boosting pumps 42; this can achieve an effective pressure boosting effect, ensure hydrogen production efficiency, effectively recover heat, and reduce energy consumption.

[0037] Furthermore, the upper end of the steam vaporization tank 1 is connected to a steam return tank 17; this achieves the effect of steam return and reduces heat loss.

[0038] Furthermore, it also includes an air compressor 18, which is connected to the vaporization tank 1; the air compressor 18 can be used to drive the airflow into the vaporization tank 1 for vaporization, ensuring hydrogen production efficiency.

[0039] Furthermore, the pyrolysis tank 21 and the bottom cover 22 are fixedly connected by a flange, resulting in higher installation strength.

[0040] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A reaction tank applied to a hydrogen production system, comprising a vapor vaporization tank, a cracking reaction tank and a cooler connected in sequence; characterized in that: a circulating booster system is connected between the cracking reaction tank and the vapor vaporization tank, a hydrogen production catalyst is arranged in the cracking reaction tank, and the gas stream output by the cracking reaction tank is reflowed into the vapor vaporization tank through the circulating booster system; the upper end of the vapor vaporization tank is connected with a steam reflux tank.

2. The reactor vessel for use in a hydrogen generation system according to claim 1, wherein: The circulating booster system is connected between the cracking reactor and the vapor vaporization tank, and the circulating booster system comprises a normal-pressure deoxygenated water tank and a booster pump arranged in series.

3. The reactor vessel for use in a hydrogen generation system according to claim 2, wherein: The booster pump is provided with two or more than two, and the two or more than two booster pumps are arranged in series with each other.

4. The reactor vessel for use in a hydrogen generation system according to claim 1, wherein: The cracking reaction tank comprises a cracking tank, a bottom cover and a plurality of steel pipes, the bottom cover is fixedly installed at the bottom end of the cracking tank, a breathable supporting plate is fixedly installed between the bottom cover and the cracking tank, the plurality of steel pipes are uniformly arranged and installed in the cracking tank, the bottom end of the steel pipe is on the breathable supporting plate, the steel pipe is filled with a hydrogen production catalyst, and the breathable supporting plate blocks the hydrogen production catalyst in the steel pipe.

5. The reactor vessel for use in a hydrogen generation system according to claim 4, wherein: An oil inlet is formed on the outer side of the bottom end of the cracking reaction tank, an oil outlet is formed on the outer side of the upper end of the cracking reaction tank, the oil inlet transports heat conducting oil into the cracking reaction tank, and the heat conducting oil heats the hydrogen production catalyst through the steel pipe.

6. The reactor vessel for use in a hydrogen generation system according to claim 4, wherein: A partition plate is fixedly installed in the middle of the bottom cover, the gas inlet and the gas outlet are arranged to be separated by the partition plate, the gas inlet and the gas outlet are formed on the bottom cover, the vapor vaporization tank is connected with the gas inlet, the cooler is connected with the gas outlet, the gas inlet is input into a plurality of steel pipes on the right side of the partition plate after passing through a plurality of steel pipes on the left side of the partition plate, and the gas in the plurality of steel pipes on the right side of the partition plate is output through the gas outlet.

7. The reactor vessel for use in a hydrogen generation system according to claim 4, wherein: A top cover is fixedly installed at the top end of the cracking tank, a top plate is fixedly installed at the top end of the plurality of steel pipes, a plurality of positioning holes are formed on the top plate, the upper end of the steel pipe is gap-fitted and installed in the positioning hole one by one, the top cover is installed above the plurality of positioning holes, and the upper end of the plurality of steel pipes on the left side of the partition plate is transported into the plurality of steel pipes on the right side of the partition plate through the top cover.

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