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:
May. 01, 2018
Filed:
Jul. 09, 2014
Linde Aktiengesellschaft, Munich, DE;
Heinz Bauer, Ebenhausen, DE;
Claudia Gollwitzer, Munich, DE;
LINDE AKTIENGESELLSCHAFT, Munich, DE;
Abstract
A method is provided for separating off acid gases, in particular COand HS, from a hydrocarbon-rich fraction, in particular natural gas. The hydrocarbon-rich fraction is cooled and partially condensed. The resultant CO-enriched liquid fraction is separated by rectification into a CO-rich liquid fraction and a CO-depleted gas fraction. The hydrocarbon-rich fraction is cooled close to the temperature of the COtriple point by means of a closed multistage refrigeration circuit. The refrigerant is a COfraction of greater than 99.5% by volume. The rectification column is operated at a pressure between 40 and 65 bar. The reboiler of the rectification column is heated by means of a condensing refrigerant substream of the refrigeration circuit that is at a suitable pressure level.