Skip to Content
Find More Like This
Return to Search

Acidic gas capture by diamines

United States Patent

May 10, 2011
View the Complete Patent at the US Patent & Trademark Office
Compositions and methods related to the removal of acidic gas. In particular, the present disclosure relates to a composition and method for the removal of acidic gas from a gas mixture using a solvent comprising a diamine (e.g., piperazine) and carbon dioxide. One example of a method may involve a method for removing acidic gas comprising contacting a gas mixture having an acidic gas with a solvent, wherein the solvent comprises piperazine in an amount of from about 4 to about 20 moles/kg of water, and carbon dioxide in an amount of from about 0.3 to about 0.9 moles per mole of piperazine.
Rochelle; Gary (Austin, TX), Hilliard; Marcus (Missouri City, TX)
Board of Regents, The University of Texas System (Austin, TX)
12/ 349,627
January 7, 2009
STATEMENT OF GOVERNMENT INTEREST The present invention was made with support under contract number FC26-2NT41440 awarded by the Department of Energy. The U.S. government has certain rights in the invention.