IMPURITY REMOVAL DEVICE, DESULFURIZATION DEVICE AND COAL GASIFICATION COMBINED GENERATION FACILITY

摘要

PROBLEM TO BE SOLVED: To surely remove a sulfur component by using a desulfurization agent efficiently without increasing cost.;SOLUTION: A first desulfurization agent block 36 and a second desulfurization agent block 35 having each different desulfurization capacity and cost are arranged respectively, in a first treatment tower 31, a second treatment tower 32 and a third treatment tower 33 through which coal gasification gas is circulated, and a desulfurization processing, a reduction processing and a purge processing are executed in each of the treatment towers 31, 32, 33, and switching of processing in the treatment towers 31, 32, 33 is repeated sequentially.;COPYRIGHT: (C)2015,JPO&INPIT