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:
Jul. 12, 2016
Filed:
Sep. 03, 2013
Linde Aktiengesellschaft, Munich, DE;
Rainer Sapper, Aufkirchen, DE;
Jurgen Witte, Munich, DE;
LINDE AKTIENGESELLSCHAFT, Munich, DE;
Abstract
Described herein is a method for separating C-hydrocarbons or C-hydrocarbons from a hydrocarbon-rich fraction is described, whereby the separation is carried out in a rectification fractionation. The rectification fractionation is provided with at least three heating circuits via which intermediate fractions are drawn off from rectification fractionation, partially evaporated and fed back again to rectification fractionation. In the method, removal of the intermediate fraction circulating in the heating circuit located at the highest temperature level is at least temporarily interrupted. During this interruption, a partial stream of a bottom fraction from the rectification fractionation is partially evaporated against an external medium and is fed as a bottom heating to the rectification fractionation. Also during this interruption, the two additional intermediate fractions, in each case at the temperature level at which the intermediate fraction circulating in the heating circuit located at the next-higher temperature level was partially evaporated, are partially evaporated.