| 摘要 |
{Abstract] Disclosed is a method of gas purification, a coal gasification plant, and a shift catalyst, each of which enables an inexpensive treatment of condensed water derived from steam 5 used in a CO shift reaction. A CO shift reaction is performed using a shift catalyst less causing side reactions (e.g., a P-Mo-Ni-supported shift catalyst), and condensedwater derived from steam used in the CO shift reaction is reused or treated. The method includes a cleaning step of removing water-soluble LO substances from a gasified gas containing CO and H2 S; a CO shift step of allowing CO in a gas after the cleaning step to react with steam by the catalysis of the shift catalyst to convert CO into CO 2 and H2; and a recovery step of removing CO 2 and H2 S froma gas after the CO shift step, inwhich post-shift condensed L5 water formed after the CO shift step is recycled. wU zz M < < -U A, c~'co J> H0 z CLw 0 <: a-a. ccJ w< -j < ~U- L z V w p 00 < LL |
