The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 17, 2012
Filed:
Oct. 09, 2009
Gerald Vorberg, Speyer, DE;
Torsten Katz, Neustadt, DE;
Georg Sieder, Bad Dürkheim, DE;
Christian Riemann, Altrip, DE;
Erika Dengler, Böhl-Iggelheim, DE;
Gerald Vorberg, Speyer, DE;
Torsten Katz, Neustadt, DE;
Georg Sieder, Bad Dürkheim, DE;
Christian Riemann, Altrip, DE;
Erika Dengler, Böhl-Iggelheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
An absorption medium for the removal of acid gases from a fluid stream comprises an aqueous solution a) of at least one amine and b) at least one phosphonic acid, wherein the molar ratio of b) to a) is in the range from 0.0005 to 1.0. The phosphonic acid is, e.g., 1-hydroxyethane-1,1-diphosphonic acid. The absorption medium exhibits a reduced regeneration energy requirement compared with absorption media based on amines or amine/promoter combinations, without significantly decreasing the absorption capacity of the solution for acid gases.