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:
Feb. 08, 2022
Filed:
May. 14, 2018
Basf SE, Ludwigshafen am Rhein, DE;
Exxonmobil Research and Engineering Company, Annandale, NJ (US);
Martin Ernst, Ludwigshafen am Rhein, DE;
Gerald Vorberg, Ludwigshafen am Rhein, DE;
Georg Sieder, Ludwigshafen am Rhein, DE;
Thomas Ingram, Ludwigshafen am Rhein, DE;
Virginia Reiner, Summit, NJ (US);
Carla Pereira, Bridgewater, NJ (US);
Michael Siskin, Westfield, NJ (US);
BASF SE (REITSTÖTTER, KINZEBACH & PARTNER), Ludwigshafen am Rhein, DE;
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
An absorbent for the selective removal of hydrogen sulfide from a fluid stream comprising carbon dioxide and hydrogen sulfide, wherein the absorbent contains an aqueous solution, comprising: a) an amine or a mixture of amines of the general formula (I) wherein Ris C-C-alkyl; Ris C-C-alkyl; Ris selected from hydrogen and C-C-alkyl; x is an integer from 2 to 10; and b) an ether or a mixture of ethers of the general formula (II): R—[O—CH—CH]—OH; wherein Ris C-C-alkyl; and y is an integer from 2 to 10; wherein Rand Rare identical; wherein the mass ratio of b) to a) is from 0.08 to 0.5. The absorbent is suitable for the selective removal of hydrogen sulfide from a fluid stream comprising carbon dioxide and hydrogen sulfide. The absorbent has a reduced tendency for phase separation at temperatures falling within the usual range of regeneration temperatures for the aqueous amine mixtures and is easily obtainable.