Liquid Air Corporation

Steven J Cooke

A process for the detection of carbonyl sulfide in a gas such as carbon dioxide is provided. The process comprises providing a known volume of gas to be analyzed and removing any hydrogen sulfide from the gas as by passage through a lead acetate column. The carbonyl sulfide is then converted to hydrogen sulfide. Preferably, this is accomplished by passage of the gas through acidified water and subsequent reaction by contact with an alumina hydrolysis catalyst. The converted H.sub.2 S is then detected and measured. The amount of hydrogen sulfide detected represents an equimolar amount of carbonyl sulfide present in the original volume of gas. A portable, lightweight analyzer embodies the process and comprises means for providing a known volume of gas to be analyzed; means for removing hydrogen sulfide from the gas; means for converting the carbonyl sulfide in the gas volume to hydrogen sulfide; means for detecting and measuring the hydrogen sulfide in the gas; and conduit means for connecting the means together.

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Clarendon Hills, IL, United States of America

Steven J Cooke