Dow Global Technolgoies LLC

Arnold C Ashcraft

Craig Norman Schubert

Novel solvent composition for selective removal of COS from a gas stream containing same, said composition comprising 

Composition and method for removal of carbonyl sulfide from acid gas containing same

Novel solvent composition for selective removal of COS from a gas stream containing same, said composition comprising a) at least one polyalkylene glycol alkyl ether of the formula (I) or 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone or a mixture of N-formylmorpholine and N-acetylmorpholine Wherein Ris an alkyl group having from 1 to 6 carbon atoms; Ris hydrogen or an alkyl group having from 1 to 4 carbon atoms; Alk is an alkylene group, branched or unbranched, having from 2 to 4 carbon atoms, and n is from 1 to 10; and b) at least one alkanolamine compound of the formula (II) or at least one piperazine compound of formula (III) wherein Ris hydrogen, an alkyl group having from 1 to 6 carbon atoms, or the ROH group; Ris a branched or unbranched alkylene group having from 1 to 6 carbon atoms; R, independently in each occurrence, is hydrogen or an hydroxyalkyl group having from 1 to 4 carbon atoms; and Ris hydrogen, an alkyl group having from 1 to 6 carbon atoms or an hydroxyalkyl group having from 1 to 4 carbon atoms.RO&#x2014;(Alk-O)&#x2014;R&#x2003;&#x2003;(I)RNHROR&#x2003;&#x2003;(II) 

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Perrineville, NJ, United States of America

Arnold C Ashcraft