Process for analyzing carbonyl sulfide in a gas
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United States of America Patent
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Dec 11, 1990
Grant Date -
N/A
app pub date -
Apr 7, 1988
filing date -
Nov 3, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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 equilmolar amount of carbonyl sulfide present in the original volume of gas. A portable, lightweight analyzer embodies the process and comprises a device for providing a known volume of gas to be analyzed; a device for removing hydrogen sulfide from the gas; a chemical for converting the carbonyl sulfide in the gas volume to hydrogen sulfide; a device for detecting and measuring the hydrogen sulfide in the gas; and conduits for connecting the above together.
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