Selective caustic scrubbing using a driver gas
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United States of America Patent
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Feb 10, 2015
Grant Date -
Jun 13, 2013
app pub date -
Dec 7, 2011
filing date -
Dec 7, 2011
priority date (Note) -
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Abstract
Systems and methods are described for selectively removing an acid gas from a feed stream to reduce co-absorption of CO2. The system can include an absorber configured to contact at least a portion of the feed stream with a caustic solution or other basic solvents to produce a clean stream substantially depleted of the acid gas. To reduce co-absorption of CO2 by the caustic solution to less than 10% of the CO2 present in the feed stream, the absorber can be further configured to receive a driver gas that is substantially non-reactive with the caustic solution.
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