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:
Oct. 28, 2025
Filed:
Dec. 13, 2021
Evonik Operations Gmbh, Essen, DE;
Thorsten Merker, Erftstadt, DE;
Christoph Hiller, Duelmen, DE;
Evonik Operations GmbH, Essen, DE;
Abstract
A process for the recovery of a light boiler and a heavy boiler from a vapor stream includes introducing a vapor stream comprising a light boiler and a heavy boiler into a column, withdrawing a vapor stream () enriched in the light boiler from the top of the column and a liquid stream () enriched in the heavy boiler from the bottom of the column. The stream () is split into a stream () and a stream (). The stream () is recycled into the column and is not cooled during the recycling. A stream (), enriched in a middle boiler, is withdrawn from the middle section of the column and is split into streams () and (). The stream () is cooled in a heat exchanger and the cooled stream is recycled into the column below the top of the column. The streams () and () are withdrawn.