Direct steam reforming of the product gas from ethanol gasification with supercritical water
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY(2024)
摘要
A continuous process for producing hydrogen from the gasification of ethanol with supercritical water (SCWG) is investigated, which involves a fixed bed steam methane reforming (SMR) reactor downstream of the SCWG reactor. Increasing temperature and decreasing space velocity in the SMR reactor resulted in increased hydrogen concentration and methane conversion. The catalyst activity was more affected at low than high pressures, presumably due to the kinetics of the SMR reaction. The significant increase in total hydrogen yield based on ethanol in the feed showed the importance of installing the reformer after gasification. The excessive steam from the SCWG reactor helped to prevent
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关键词
Steam methane reforming,Pre-reforming,Supercritical water gasification,Ethanol,Ni-based catalyst,Hydrocarbons
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