Hydrogen production system based on solar fuel methanol-water reforming

A technology for hydrogen production from reforming and methanol production, which is applied in the fields of biofuels, hydroxyl compound preparation, hydrogen, etc., can solve problems such as the inability to achieve zero carbon emissions, and achieve the effect of sustainable development and ecological civilization construction.

Active Publication Date: 2020-04-21
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Current documents and patented technologies ZL201310340475.0 and ZL201520233240.6 disclose methanol steam reforming to produce hydrogen, but these supporting methanol mainly comes from fossil resources, which cannot meet the zero-carbon emission requirements of the entire industry chain
At the same time, there are still many deficiencies in methanol reforming and purification processes

Method used

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  • Hydrogen production system based on solar fuel methanol-water reforming
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  • Hydrogen production system based on solar fuel methanol-water reforming

Examples

Experimental program
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Effect test

Embodiment 7～9 2

[0071] Embodiment 7~9 carbon dioxide and hydrogen separation

[0072] The mixed gas composition after methanol reforming in embodiment 1 is H 2 (73%) CO 2 (24%), CO (2%) passes through the carbon dioxide and hydrogen separation module, taking palladium membrane separation as an example, its working conditions and effects are shown in Table 2

[0073] Table 2

[0074]

[0075] a: Hydrogen separation efficiency = (n 分离后的物质的量 / n 分离前的物质的量 )×100

[0076] Using palladium membrane technology to separate hydrogen, the purity of hydrogen can reach 99.999%. It can directly enter the hydrogen collection tank and supply the hydrogen use terminal.

Embodiment 10～12

[0077] Embodiment 10~12 water vapor conversion

[0078] With the residual gas after separating carbon dioxide and hydrogen in embodiment 7, concrete composition is H 2 (46%)CO 2 (50%), CO (4%) enters the water vapor shift module, where CO and H 2 The ratio of the amount of substance of O is 1:6. See 3 for its working conditions and effects

[0079] table 3

[0080]

[0081] a CO conversion rate = (C 反应后的CO浓度 / C 反应前的CO浓度 )×100

Embodiment 13～15

[0082] Embodiment 13~15 carbon dioxide separation

[0083] The mixed gas composition after water vapor shift in embodiment 10 is H 2 (47.3%)CO 2

[0084] (51.2%), the gas of CO (1.4%) carries out carbon dioxide separation, and its working condition and effect are shown in Table 4.

[0085]Table 4

[0086]

[0087] a: Carbon dioxide separation efficiency = (n 分离后的物质的量 / n 分离前的物质的量 )×100

[0088] The concentration of the obtained carbon dioxide after separation>98.5%, can be directly used in carbon dioxide hydrogenation to synthesize methanol, and the remaining gas, such as shown in Example 15, wherein H 2 , CO 2 The composition of CO and CO is close to the composition of the methanol reformed mixed gas in Example 1, and can be directly returned to the palladium membrane for cyclic separation.

[0089] It can be seen from Table 1, Table 2, Table 3 and Table 4 that hydrogen for fuel cells can be efficiently produced by solar fuel methanol reforming. At the same time, ...

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Abstract

The invention discloses a hydrogen production system based on solar fuel methanol-water reforming. The system comprises a solar fuel methanol synthesis system, a solar fuel methanol hydrogen production system and a gas collection system, the solar fuel methanol synthesis system comprises a renewable energy power generation module, a water electrolysis hydrogen production module and a methanol synthesis module, the solar fuel methanol hydrogen production system comprises a methanol-water reforming module, a carbon dioxide and hydrogen separation module, a water-vapor conversion module and a carbon dioxide separation module, and the gas collection module comprises a hydrogen collection module and a carbon dioxide collection module. The solar fuel methanol synthesis system, the solar fuel methanol hydrogen production system and the gas collection system are directly or indirectly connected. According to the hydrogen production system based on solar fuel methanol-water reforming, carbon dioxide zero emission of a whole industry chain is achieved, and sustainable development and ecological civilization construction of the human society are achieved.

Description

technical field [0001] The invention belongs to the field of energy storage and utilization of clean energy, and in particular relates to a hydrogen production system based on solar fuel methanol water reforming. Background technique [0002] As a clean fuel, hydrogen energy is currently an ideal fuel. Under the same mass, the energy density of hydrogen is 2.5 times, 3 times and 6.2 times that of natural gas, gasoline and coal, respectively. The most important thing is that the final product of hydrogen combustion is water without any pollution. On the application side of hydrogen energy, in addition to large-scale industrial applications, fuel cell vehicles are the most promising large-scale hydrogen energy civilian industry in the future. Fuel cell vehicles using hydrogen energy are the only environmentally friendly vehicles that can fully meet vehicle performance indicators, avoiding the pollution emissions of traditional fuel vehicles and the large-scale battery post-pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/32C07C29/151C07C31/04
CPCC01B3/323C01B2203/0233C07C29/151C07C31/04Y02E50/10Y02P20/10Y02P20/133Y02P20/50
Inventor 李灿王集杰姚婷婷李军卢胜梅
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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