Catalytic Oxidation of Hydrocarbon Refrigerant Isobutane

Hydrocarbon refrigerant isobutane (R600a) began to be carried in household refrigerator. The proper processing technology of isobutane is required in order to prepare for recycling of the refrigerator. Isobutane below the inflammable range is oxidized to CO2 and H2O by usin a palladium catalyst. The catalyst temperature conditions for isobutane completely oxidation were clarified. Oxidation reaction starts at the catalyst temperature of about 570 K, the complete oxidation temperature becomes higher with isobutane concentration and premixture space velocity. The temperature distribution of catalyst showed that 60% or more of isobutane had oxidized near the catalyst inlet. Isobutane oxidation characteristics are mostly in agreement with propane on the condition of the same combustion rate.