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Hydromethanation, (meth-uh-ney-shuhn ) is the process by which methane (the main constituent of natural gas) is produced through the combination of steam, carbonaceous solids and a catalyst in a fluidized bed reactor. The process, developed over the past 60 years by multiple research groups, enables the highly efficient conversion of coal, petroleum coke and biomass (e.g. switchgrass or wood waste) into clean, pipeline quality methane. ==Chemistry== The chemistry of catalytic hydromethanation involves reacting steam and carbon to produce methane and carbon dioxide, according to the following reaction: 2C + 2H2O -> CH4 + CO2 The process utilizes a specially designed reactor and depends upon a proprietary metal catalyst to promote chemical conversion at the low temperatures where the water gas shift reaction and methanation take place. When a feedstock treated with the catalyst is introduced into this reactor and mixed with steam, three reactions occur that efficiently convert the feedstock into methane. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「hydromethanation」の詳細全文を読む スポンサード リンク
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