COMPACT ABSORPTION-DESORPTION PROCESS AND APPARATUS USING CONCENTRATED SOLUTION
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United States of America Patent
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Issued Date -
Jul 12, 2012
app pub date -
Jul 9, 2010
filing date -
Jul 10, 2009
priority date (Note) -
Abandoned
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Abstract
A process for absorption and desorption of CO2 from an flue gas comprising feeding the flue gas into a mainly horizontal channel (20, 22, 249 where an absorption fluid is spray in to the channel in the flow direction of the flue gas and collected as CO2 rich absorption fluid at a lower part of the channel and transported into the centre of a rotating desorber wheel (30), where the CO2 is desorbed and the lean absorption fluid is returned to the channel is disclosed. This process can be utilized with absorption fluids with high concentration of conventional amine CO2 absorbents. Disclosed is also the use of an amine absorbent in a concentration of between 61 and 100% by weight for the absorption of CO2 from a gas stream, where the amine is an alkanol amine.
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