Patent ID: 6749821
Filing Date: 2004-06-15
Classification: B01J

Abstract:
A process for the purification of a recycle inert gas stream leaving a polymerization reactor from organic impurities, comprising:adding oxygen or a gas containing oxygen to said gas stream; contacting said gas stream with a catalyst impregnated with a metal including platinum, which has been subjected to reduction such that all of said metal impregnated on said catalyst is in a substantially reduced state, at a reaction temperature of less than 300Â° C. (572Â° F.) in an oxidation reactor wherein the quantity of oxygen added is substantially stoichiometric with respect to the organic impurities such that a gas effluent from the oxidation reactor contains no greater than 250 ppm oxygen; drying said gas effluent leaving the oxidation reactor to remove water from said gas effluent; and recycling said gas effluent to the polymerization reactor.