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:
Nov. 17, 2015
Filed:
Sep. 09, 2011
David C. Calabro, Bridgewater, NJ (US);
Lisa S. Baugh, Ringoes, NJ (US);
Pavel Kortunov, Flemington, NJ (US);
Benjamin A. Mccool, Naples, FL (US);
Michael Siskin, Westfield, NJ (US);
Dennis G. Peiffer, Annandale, NJ (US);
Quanchang LI, Dayton, NJ (US);
David C. Calabro, Bridgewater, NJ (US);
Lisa S. Baugh, Ringoes, NJ (US);
Pavel Kortunov, Flemington, NJ (US);
Benjamin A. McCool, Naples, FL (US);
Michael Siskin, Westfield, NJ (US);
Dennis G. Peiffer, Annandale, NJ (US);
Quanchang Li, Dayton, NJ (US);
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY, Annandale, NJ (US);
Abstract
A method is described for separating COand/or HS from a mixed gas stream by contacting the gas stream with a non-aqueous, liquid absorbent medium of a primary and/or secondary aliphatic amine, preferably in a non-aqueous, polar, aprotic solvent under conditions sufficient for sorption of at least some of the CO. The solution containing the absorbed COcan then be treated to desorb the acid gas. The method is usually operated as a continuous cyclic sorption-desorption process, with the sorption being carried out in a sorption zone where a circulating stream of the liquid absorbent contacts the gas stream to form a CO-rich sorbed solution, which is then cycled to a regeneration zone for desorption of the CO(advantageously at <100° C.). Upon COrelease, the regenerated lean solution can be recycled to the sorption tower. CO:(primary+secondary amine) adsorption molar ratios >0.5:1 (approaching 1:1) may be achieved.