Patent · US Active

Retention of amines in the removal of acid gases by means of amine absorption media

US8529857B2 · kind B2 · utility

5Cited by

1References

16Claims

0Family size

Assignee

BASF SE

Inventors

Georg Sieder · Bad Dürkheim, DE
Ralf Notz · Ludwigshafen, DE
Hugo Rafael Garcia Andarcia · Mannheim, DE
Sandra Schmidt · Wuppertal, DE
Peter Moser · Schlagturn, AT

Key dates

Filing date	Mar 30, 2012
Grant date	Sep 10, 2013
Priority date	—
Expiry date	Mar 30, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldChemical engineering
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.