METHOD FOR PURIFYING CARBON DIOXIDE OFF-GAS, COMBUSTION CATALYST FOR PURIFICATION OF CARBON DIOXIDE OFF-GAS, AND PROCESS FOR PRODUCING NATURAL GAS

摘要

Disclosed is a method for purifying a carbon dioxide off-gas, comprising introducing a carbon dioxide off-gas into a catalytic combustor and subjecting the carbon dioxide off-gas to oxidative decomposition in the presence of a combustion catalyst to oxidatively decompose VOC and sulfur compounds contained in the carbon dioxide off-gas.  The combustion catalyst comprises one or more metal oxides selected from the group consisting of zirconium oxide, titanium oxide, and silicon oxide and one or more noble metals selected from the group consisting of platinum, palladium, and iridium.