| 摘要 |
PURPOSE:To prolong the life of a catalyst and to keep the reforming efficiency at a high level by packing the catalysts having different activities in the raw gas inlet part and the outlet part for the gaseous reaction product of the catalyst bed in a reformer in reforming methanol with steam. CONSTITUTION:The catalyst resistant to heat and having activity at high temp. is packed in the raw gas inlet part of the catalyst bed in the reformer and the catalyst having activity at low temp. is packed in the outlet part of the gaseous reaction product in the steam-reforming of methanol. A Cu-Cr-Zn catalyst is used as the catalyst resistant to heat and having activity at high temp. and a Cu-Zn catalyst is preferably used as the catalyst having activity at low temp. Since the catalysts are packed in such a way, the temp. distribution at the inlet part is raised as high as possible and that at the outlet part is lowered as low as possible, and the above-mentioned effect can be obtained. |
