CN216129329U - Skid-mounted methanol multiphase high-pressure hydrogen production and purification system - Google Patents
Skid-mounted methanol multiphase high-pressure hydrogen production and purification system Download PDFInfo
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- CN216129329U CN216129329U CN202122906822.4U CN202122906822U CN216129329U CN 216129329 U CN216129329 U CN 216129329U CN 202122906822 U CN202122906822 U CN 202122906822U CN 216129329 U CN216129329 U CN 216129329U
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Abstract
The utility model relates to the field of hydrogen production from methanol, and particularly discloses a skid-mounted methanol multiphase high-pressure hydrogen production and purification system, which comprises a multiphase catalytic hydrogen production unit, a gas-liquid separation device and a hydrogen purification unit, wherein the bottom end of the multiphase catalytic hydrogen production unit is connected with a methanol solution tank, a high-pressure pump is arranged between the multiphase catalytic hydrogen production unit and the methanol solution tank, the output end of the multiphase catalytic hydrogen production unit is connected with the inlet of the gas-liquid separation device, the outlet of the gas-liquid separation device is connected with the input end of the hydrogen purification unit, and the bottom end of the gas-liquid separation device is connected with the input end of the high-pressure pump. Production according to needs and higher safety.
Description
Technical Field
The utility model relates to the technical field of methanol hydrogen production, in particular to a skid-mounted methanol multiphase high-pressure hydrogen production and purification system.
Background
The utilization of hydrogen energy is an important measure to achieve the dual carbon goal. The development of traditional energy is restricted by environmental protection factors, such as the vehicles shuttling back and forth on roads continuously discharge carbon dioxide gas, and increase the carbon emission. If the electric vehicle uses electric energy from thermal power, carbon dioxide gas is still emitted during the power generation process of the thermal power plant although the electric vehicle does not emit carbon dioxide gas during the driving process. In order to reduce the emission of carbon dioxide gas during the running process of an automobile, green hydrogen energy is one of the best measures. In the process of vigorous development of photovoltaic or wind power, in consideration of the consumption capacity of a power grid, in order to improve the utilization rate of the photovoltaic and wind power, electric energy must be converted into energy which can be stored and has a great demand, namely hydrogen energy. Because hydrogen energy is not suitable for long-distance transportation, methanol can be used as a carrier of hydrogen, carbon dioxide is solidified in the process of preparing methanol from hydrogen and carbon dioxide, and the carbon dioxide is released in the process of preparing hydrogen from the methanol, so that the emission of the carbon dioxide is not increased in the whole process, and the aim of zero carbon emission of a hydrogen fuel cell automobile is fulfilled.
The hydrogen energy has zero emission, no pollution, low noise, sustainability and high efficiency, and only water is generated by the fuel cell, so the hydrogen energy is a very good energy solution for realizing the double-carbon upscale. The fuel cell automobile using hydrogen energy can avoid the pollution emission of the traditional fuel oil automobile and the large-scale battery post-treatment problem of the lithium battery automobile.
With the popularity of fuel cell vehicles and hydrogen plants, the supply and transportation of hydrogen has become a critical issue to be addressed. The domestic hydrogenation station mainly uses an off-station hydrogen production hydrogenation station, and hydrogen is conveyed into the hydrogenation station after being produced externally, so that the hydrogen cost is increased, and huge potential safety hazards exist. The price of hydrogen is not expensive, the hydrogen is expensive in the storage and transportation link, and accidents are easy to happen in long-distance high-pressure hydrogen transportation and storage.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems that in the prior art, hydrogen is conveyed into a hydrogenation station after being produced outside, which increases the hydrogen cost on one hand, and also has great potential safety hazard on the other hand, and provides a skid-mounted methanol multiphase high-pressure hydrogen production and purification system.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the skid-mounted methanol multiphase high-pressure hydrogen production and purification system comprises a multiphase catalytic hydrogen production unit, a gas-liquid separation device and a hydrogen purification unit, wherein the number of the multiphase catalytic hydrogen production unit is multiple, the multiphase catalytic hydrogen production unit is arranged in parallel, the bottom end of the multiphase catalytic hydrogen production unit is connected with a methanol solution tank, a high-pressure pump is arranged between the multiphase catalytic hydrogen production unit and the methanol solution tank, a check valve 1 is arranged between the high-pressure pump and the multiphase catalytic hydrogen production unit, the output end of the multiphase catalytic hydrogen production unit is connected with the inlet of the gas-liquid separation device through a check valve 2, the outlet of the gas-liquid separation device is connected with the input end of the hydrogen purification unit, the bottom end of the gas-liquid separation device is connected with the input end of the high-pressure pump, and the number of the hydrogen purification unit is multiple, the hydrogen purification units are arranged in parallel, and the output ends of the hydrogen purification units are provided with one-way valves 3.
Preferably, still include methyl alcohol jar and water tank, the methyl alcohol jar with methyl alcohol solution jar passes through valve 1 to be connected, the water tank with methyl alcohol solution jar passes through valve 2 to be connected.
Preferably, the system further comprises a heating and heat exchanging system, and the heating and heat exchanging system is arranged in the multiphase catalytic hydrogen production unit through heat conducting oil.
Preferably, still including analytic gas recovery unit, analytic gas recovery unit includes compressor unit, air cooler and carbon dioxide storage tank, be provided with the resolver entry on the compressor unit, the air cooler with be provided with the carbon dioxide export between the carbon dioxide storage tank, the compressor unit with the air cooler is connected, the air cooler with the carbon dioxide storage tank is connected.
Preferably, the system also comprises a heat exchanger, wherein the heat exchanger heats the methanol solution through heat conducting oil, and the heat exchanger cools carbon dioxide in the analyzed gas through air.
Preferably, the outlet pressure of the hydrogen purification unit is 5.5MPa or 35 MPa.
The utility model has the beneficial effects that:
the utility model realizes skid-mounted on-site high-pressure hydrogen production, can recover carbon dioxide while generating main product hydrogen, greatly reduces the emission of carbon dioxide, has simple hydrogen production technology, low requirement on temperature, low energy consumption and production cost, omits hydrogen transportation link, realizes production according to requirements, and has higher safety.
Drawings
FIG. 1 is a schematic flow diagram of a skid-mounted methanol multiphase high-pressure hydrogen production and purification system provided by the utility model.
In the figure: the system comprises a methanol tank 1, a water tank 2, a methanol solution tank 3, a high-pressure pump 4, a heterogeneous catalytic hydrogen production unit 5, a gas-liquid separation device 6, a hydrogen purification unit 7 and a heat exchanger 8.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the skid-mounted methanol multiphase high-pressure hydrogen production and purification system comprises a plurality of multiphase catalytic hydrogen production units 5, a gas-liquid separation device 6 and a hydrogen purification unit 7, wherein the number of the multiphase catalytic hydrogen production units 5 is multiple, specific data can be allocated according to actual needs, the multiphase catalytic hydrogen production units 5 are arranged in parallel, the bottom end of each multiphase catalytic hydrogen production unit 5 is connected with a methanol solution tank 3, a high-pressure pump 4 is arranged between each multiphase catalytic hydrogen production unit 5 and the corresponding methanol solution tank 3, a check valve 1 is arranged between each high-pressure pump 4 and each multiphase catalytic hydrogen production unit 5, and the output end of each multiphase catalytic hydrogen production unit 5 is connected with the inlet of the gas-liquid separation device 6 through a check valve 2. The outlet of the gas-liquid separation device 6 is connected with the input end of the hydrogen purification unit 7, the bottom end of the gas-liquid separation device 6 is connected with the input end of the high-pressure pump 4, and mixed gas is separated from the carried methanol solution in the gas-liquid separation device 6. The hydrogen purification unit 7 is in a plurality of quantity, and is a plurality of the hydrogen purification unit 7 sets up in parallel, the output of hydrogen purification unit 7 is provided with check valve 3, realizes the separation of carbon dioxide and hydrogen in hydrogen purification unit 7, and after hydrogen purity reached the operation requirement, outwards export through check valve 3, generally get into storage tank or the compressor that the secondary boosts. When the system operates for a period of time, the desorption gas generated by the system needs to be discharged. The main components of the gas to be analyzed are carbon dioxide, part of hydrogen, a small amount of carbon monoxide and a trace amount of methane.
Note that the outlet pressure of the hydrogen purification unit 7 is 5.5MPa or 35 MPa.
In a preferred embodiment, the device further comprises a methanol tank 1 and a water tank 2, wherein the methanol tank 1 is used for storing methanol, and the water tank 2 is used for storing water. The methanol tank 1 is connected with the methanol solution tank 3 through a valve 1, and the water tank 2 is connected with the methanol solution tank 3 through a valve 2. Both the valve 1 and the valve 2 are flow control valves.
In a preferred embodiment, the system further comprises a heating and heat exchanging system, wherein the heating and heat exchanging system is arranged in the heterogeneous catalytic hydrogen production unit 5 through heat conducting oil. The methanol solution and the catalyst are carried out in a reaction tube, the reaction pressure is high, a one-way valve 2 is arranged at the outlet of the methanol heterogeneous catalytic hydrogen production unit, hydrogen enters a gas-liquid separation tank 6 for gas-liquid separation after passing through the one-way valve 2, then the gaseous hydrogen enters a hydrogen purification unit 7 for purification, and the liquid enters a system for recycling after being pressurized again before returning to the input end of the high-pressure pump 4.
In a preferred embodiment, the system further comprises a desorption gas recovery device, and the desorption gas treatment system separates and stores the carbon dioxide. The analytic gas recovery device comprises a compressor unit, an air cooler and a carbon dioxide storage tank, wherein an analyzer inlet is formed in the compressor unit, a carbon dioxide outlet is formed in the air cooler and the carbon dioxide storage tank, the compressor unit is connected with the air cooler, and the air cooler is connected with the carbon dioxide storage tank. And the analytic gas inlet of the analytic gas recovery device is connected with the analytic gas outlet of the hydrogen purification unit 7.
In a preferred embodiment, the system further comprises a heat exchanger 8, wherein the heat exchanger 8 heats the methanol solution through heat conducting oil, and the heat exchanger 8 cools carbon dioxide in the analysis gas through air.
In one embodiment, there are two heterogeneous catalytic hydrogen production units 5, wherein the input of one heterogeneous catalytic hydrogen production unit 5 is provided with a valve 3 and the input of the other heterogeneous catalytic hydrogen production unit 5 is provided with a valve 4. The multiphase catalytic hydrogen production unit 5 mainly comprises two parts, one part is a heating system, the heating system is arranged on the shell side, the heating system is heated by heat conduction oil, steam or other modes and needs to reach a specified temperature, and the temperature difference of each point is not higher than a specified value. The other part is a catalytic hydrogen production part, the catalytic hydrogen production part is completed in a tube, methanol solution with certain solubility absorbs heat in the tube, and hydrogen and carbon dioxide, a small amount of carbon monoxide and a small amount of methane are mainly generated under the action of a catalyst.
After leaving the hydrogen purification unit, the desorption gas is subjected to an oxidative decomposition part and a heat exchanger. Through oxidation, energy carried in the analysis gas is released and used for providing heat energy for the heterogeneous catalytic hydrogen production unit. The process of providing heat energy is realized in a heat exchanger in a heat exchange mode. Finally, the emissions are water and carbon dioxide. The condensed water is collected in a centralized way, and carbon dioxide is recovered and put into the next cycle as chemical raw materials.
The utility model realizes skid-mounted on-site high-pressure hydrogen production, can recover carbon dioxide while generating main product hydrogen, greatly reduces the emission of carbon dioxide, has simple hydrogen production technology, low requirement on temperature, low energy consumption and production cost, omits hydrogen transportation link, realizes production according to requirements, and has higher safety.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. The skid-mounted methanol multiphase high-pressure hydrogen production and purification system is characterized by comprising multiphase catalytic hydrogen production units (5), gas-liquid separation devices (6) and hydrogen purification units (7), wherein the multiphase catalytic hydrogen production units (5) are multiple in number and multiple in parallel, a methanol solution tank (3) is connected to the bottom ends of the multiphase catalytic hydrogen production units (5), a high-pressure pump (4) is arranged between each multiphase catalytic hydrogen production unit (5) and the corresponding methanol solution tank (3), a check valve 1 is arranged between each high-pressure pump (4) and each multiphase catalytic hydrogen production unit (5), the output end of each multiphase catalytic hydrogen production unit (5) is connected with the inlet of each gas-liquid separation device (6) through a check valve 2, the outlet of each gas-liquid separation device (6) is connected with the input end of each hydrogen purification unit (7), the bottom end of the gas-liquid separation device (6) is connected with the input end of the high-pressure pump (4), the number of the hydrogen purification units (7) is multiple, the hydrogen purification units (7) are arranged in parallel, and the output end of the hydrogen purification unit (7) is provided with a one-way valve (3).
2. The skid-mounted methanol multiphase high-pressure hydrogen production and purification system according to claim 1, further comprising a methanol tank (1) and a water tank (2), wherein the methanol tank (1) is connected with the methanol solution tank (3) through a valve 1, and the water tank (2) is connected with the methanol solution tank (3) through a valve 2.
3. The skid-mounted methanol multiphase high-pressure hydrogen production and purification system according to claim 1, further comprising a heating and heat exchange system, wherein the heating and heat exchange system is arranged in the multiphase catalytic hydrogen production unit (5) through heat conducting oil.
4. The skid-mounted methanol multiphase high-pressure hydrogen production and purification system according to claim 1, further comprising a desorption gas recovery device, wherein the desorption gas recovery device comprises a compressor unit, an air cooler and a carbon dioxide storage tank, a desorption device inlet is arranged on the compressor unit, a carbon dioxide outlet is arranged between the air cooler and the carbon dioxide storage tank, the compressor unit is connected with the air cooler, and the air cooler is connected with the carbon dioxide storage tank.
5. The skid-mounted methanol multiphase high-pressure hydrogen production and purification system according to claim 4, further comprising a heat exchanger (8), wherein the heat exchanger (8) heats the methanol solution through heat conducting oil, and the heat exchanger (8) cools carbon dioxide in the analyzed gas through air.
6. The skid-mounted methanol multiphase high pressure hydrogen production and purification system according to claim 1, wherein the outlet pressure of the hydrogen purification unit (7) is 5.5MPa or 35 MPa.
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| CN202122906822.4U CN216129329U (en) | 2021-11-24 | 2021-11-24 | Skid-mounted methanol multiphase high-pressure hydrogen production and purification system |
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| CN202122906822.4U CN216129329U (en) | 2021-11-24 | 2021-11-24 | Skid-mounted methanol multiphase high-pressure hydrogen production and purification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159457A (en) * | 2022-08-26 | 2022-10-11 | 江西新节氢能源科技有限公司 | Skid-mounted equipment for producing mixed hydrogen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159457A (en) * | 2022-08-26 | 2022-10-11 | 江西新节氢能源科技有限公司 | Skid-mounted equipment for producing mixed hydrogen |
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