Title:
ガス精製方法及び石炭ガス化プラント
Document Type and Number:
Japanese Patent JP5705156
Kind Code:
B2
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 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 condensed water derived from steam used in the CO shift reaction is reused or treated. The method includes a cleaning step of removing water-soluble substances from a gasified gas containing CO and H2S; 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 CO2 and H2; and a recovery step of removing CO2 and H2S from a gas after the CO shift step, in which post-shift condensed water formed after the CO shift step is recycled.
Inventors:
Takashi Sasaki
Tomoko Akiyama
Tomoko Akiyama
Application Number:
JP2012079874A
Publication Date:
April 22, 2015
Filing Date:
March 30, 2012
Export Citation:
Assignee:
Mitsubishi Hitachi Power Systems Co., Ltd.
International Classes:
C10K3/04; C01B32/50; C10K1/10
Domestic Patent References:
| JP2010260894A | ||||
| JP57003703A | ||||
| JP60139790A | ||||
| JP3277694A | ||||
| JP3100095A |
Foreign References:
| WO2011105501A1 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation