CO2 METHANATION REACTION APPARATUS PROVIDED WITH SELECTIVE OXIDATION CATALYST FOR CO, AND METOD FOR REMOVING CO FROM GAS

WIPO Patent Application WO/2021/251471

A1

The present invention provides: a method and apparatus for producing a methane-rich gas that has a low carbon monoxide concentration; and a method for decreasing carbon monoxide in a gas that contains carbon monoxide and methane. A method for producing a methane-rich gas, said method comprising: a process wherein hydrogen is added to a gas that contains carbon dioxide so as to cause a CO2 methanation reaction, thereby obtaining a gas that mainly contains methane, while secondarily containing carbon monoxide; and a process wherein oxygen is added to the thus-obtained gas and an oxidation reaction of carbon monoxide is caused in the presence of a CO selective oxidation catalyst. A method for decreasing carbon monoxide in a gas that mainly contains methane, while secondarily containing carbon monoxide, said method comprising a process wherein oxygen is added to a gas that mainly contains methane, while secondarily containing carbon monoxide, and an oxidation reaction of carbon monoxide is caused in the presence of a CO selective oxidation catalyst.

IKEMOTO SEIJI (JP)
SASAKI GOKI (JP)
YOKOYAMA KOICHI (JP)
TANAKA YUKIO (JP)
KIYOSAWA MASASHI (JP)

PCT/JP2021/022186

December 16, 2021

June 10, 2021

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MITSUBISHI POWER LTD (JP)

C07C1/12; B01J23/42; B01J23/46; C01B32/50; C07C7/148; C07C9/04

US20170022121A1	2017-01-26
JP2015124217A	2015-07-06
JP2011241182A	2011-12-01
JP2020037535A	2020-03-12
JP2019155227A	2019-09-19
JP2001017861A	2001-01-23
JPH06142513A	1994-05-24
JP2013136538A	2013-07-11
JP2012140382A	2012-07-26
JP2015124217A	2015-07-06

KIKUMA, Tadayuki (JP)

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