Carbon dioxide capture
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United States of America Patent
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Feb 21, 2012
Grant Date -
Feb 11, 2010
app pub date -
Jun 19, 2009
filing date -
Jun 20, 2008
priority date (Note) -
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Abstract
A method of carbon dioxide capture is disclosed. In a step (a) anhydrous sodium carbonate is separated from a first aqueous solution formed by reacting carbon dioxide and an aqueous solution of sodium hydroxide. In step (b) the anhydrous sodium carbonate is treated by causticization to generate carbon dioxide and sodium hydroxide. The first aqueous solution of step (a) is formed by scrubbing a gas containing carbon dioxide with an aqueous solution of sodium hydroxide.
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