Patent ID: 7431843
Filing Date: 2008-10-07
Classification: B01D,B01J,C02F

Abstract:
1. A method of removing contaminants from a stream comprising silicone based solvents comprising: contacting the stream with an adsorbent in an adsorption chamber and at adsorption conditions to remove at least a fraction of the contaminants thereby generating a purified stream, wherein the adsorbent is selected from the group consisting of alumina, metal oxides, silica, zeolites, molecular sieves, mesoporous silica-alumina and mixtures thereof; and regenerating the adsorbent with a two stage heating process at regeneration conditions, wherein the first stage comprises heating to a driving temperature between about 150° C. to about 300° C. over the adsorbent to produce an effluent gas stream, and the second stage comprises heating the adsorbent from the drying temperature to a desorption temperature from about 450° C. to about 500° C.