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:
Sep. 10, 2013
Filed:
Mar. 30, 2012
Georg Sieder, Bad Dürkheim, DE;
Ralf Notz, Ludwigshafen, DE;
Hugo Rafael Garcia Andarcia, Mannheim, DE;
Sandra Schmidt, Essen, DE;
Peter Moser, Köln, DE;
Georg Sieder, Bad Dürkheim, DE;
Ralf Notz, Ludwigshafen, DE;
Hugo Rafael Garcia Andarcia, Mannheim, DE;
Sandra Schmidt, Essen, DE;
Peter Moser, Köln, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A method for removing acid gases from a fluid stream comprises a) treating the fluid stream in an absorption zone with an absorption medium which comprises an aqueous solution of at least one amine, conducting the treated fluid stream through at least two scrubbing zones and treating it with a non-acidic aqueous phase in order to transfer entrained amine and/or entrained amine decomposition products at least in part to the aqueous phase, wherein aqueous phase is recycled via at least one scrubbing zone and aqueous phase is conducted through at least one scrubbing zone without recycling. The method permits efficient retention of amines from the treated fluid streams.