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. 01, 2022
Filed:
Sep. 27, 2019
L'air Liquide, Societe Anonyme Pour L'etude ET L'exploitation Des Procedes Georges Claude, Paris, FR;
Sharon Corbet, Frankfurt am Main, DE;
Alfred Gubrinski, Erzhausen, DE;
Pankaj Puri, Faridabad, IN;
Dorit Rappold, Frankfurt am Main, DE;
Sophia Schmidt, Frankfurt am Main, DE;
Abstract
The invention relates to a gas scrubbing process for purifying crude synthesis gas with methanol as a physical absorption medium, wherein an acid gas comprising at least hydrogen sulfide (HS) is produced. The acid gas is produced in a hot regenerator arranged downstream of an absorption apparatus and subsequently separated from gaseous methanol in an acid gas separator by cooling and condensation. The acid gas separator has a condensation region and an absorption region, wherein both regions are separated from one another by a gas-permeable tray. This has the result that impurities such as hydrogen cyanide and/or ammonia outgassing from a first acid gas substream are not reabsorbed in the condensation region of the acid gas separator, thus avoiding an accumulation of impurities in the hot regenerator or other parts of the gas scrubbing plant. The invention further relates to an acid gas separator and to the use of the acid gas separator according to the invention in a process according to the invention.