Process and apparatus for production of hydrogen
A manufacturing method and modification technology, applied in the field of hydrogen production, can solve the problems of expensive composite modified catalyst, poor reaction selectivity, and insufficient self-heating modification method.
Active Publication Date: 2013-06-12
SUMITOMO SEIKA CHEM CO LTD
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Problems solved by technology
[0010] However, in practice, even with the above-mentioned composite reforming catalyst, the problems of the autothermal reforming method cannot be sufficiently solved.
That is, even if the above-mentioned composite reforming catalyst is used, the durability in the excessively high temperature region caused by the partial oxidation reforming reaction cannot be sufficiently improved
In addition, the above-mentioned composite reforming catalyst has problems in that the reaction selectivity is inferior to that of the usual Cu / ZnO catalyst in the water vapor reforming reaction, the generation efficiency of hydrogen is low, and unwanted by-products are easily produced.
In addition, there is also the inconvenience that the above-mentioned composite modification catalyst itself is expensive
Method used
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Embodiment 1
[0042] In the present embodiment, the modification reactor 1 ( figure 1 ), producing modified gas containing hydrogen from a mixed raw material composed of methanol, air and water.
[0043] The pipe body 2 of the reforming reactor 1 is composed of a stainless steel pipe (inner diameter: 23 mm, overall length: 400 mm). In the reforming reaction section 3, as a reforming catalyst, a granular catalyst (particle diameter: 1.2 to 2.5 mm) in which CuO is supported on alumina is filled at a filling height of 200 mm. Here, the modification reaction part 3 was arrange|positioned at the position whose upper end descended 110 mm from the upper end of the said stainless steel pipe. In addition, an electric heater (maintaining temperature 250° C.) surrounding the outer periphery of the stainless steel tube was disposed.
[0044] In the supply amount of the mixed raw material supplied to reforming reactor 1, the flow rate of methanol was 4.96 mol / h, the flow rate of water was 7.44 mol / h (...
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Abstract
Disclosed is a hydrogen production process which can produce hydrogen from a raw material mixture comprising at least a hydrocarbon and water through a reaction system for carrying out at least a steam reforming reaction in the presence of a reforming catalyst. In the process, a CuO single catalyst is used as the reforming catalyst. The raw material mixture may additionally comprise an oxygen, and the reaction system may be one which can achieve a partial oxidative reforming reaction and a steam reforming reaction in the presence of the reforming catalyst.
Description
technical field [0001] The present invention relates to a method for producing hydrogen from a mixed raw material containing at least hydrocarbons and water through a reaction system in which at least steam reforming reaction is performed in the presence of a reforming catalyst. In particular, the present invention relates to a method for producing hydrogen from a mixed raw material containing hydrocarbons, oxygen and water by an autothermal reforming method including a partial oxidation reforming reaction and a steam reforming reaction. In addition, the present invention also relates to a hydrogen production device for carrying out the hydrogen production method. Background technique [0002] As a method for producing hydrogen industrially, an autothermal reforming method combining a partial oxidation method and a steam reforming method is known. In this autothermal reforming method, hydrocarbons are used as a hydrogen generation source. In the partial oxidation method, h...
Claims
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IPC IPC(8): C01B3/40B01J23/72
CPCB01J23/72C01B2203/0844C01B3/326C01B2203/1241C01B2203/1211C01B2203/1229C01B2203/1076C01B2203/1247C01B2203/0244C01B3/40C01B2203/1223Y02P20/52
Inventor 住田俊彦土屋贵裕畑启之
Owner SUMITOMO SEIKA CHEM CO LTD