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:
Aug. 05, 2014
Filed:
Aug. 23, 2011
Heinz Bauer, Ebenhausen, DE;
Georg Schopfer, Munich, DE;
Jurgen Witte, Munich, DE;
Linde Aktiengesellschaft, Munxhwn, DE;
Abstract
The invention relates to a method for resolving a hydrocarbon-rich, nitrogen-containing feed fraction ('), preferably natural gas, is described, wherein the feed fraction (′) is separated by rectification (T, T) into a nitrogen-enriched fraction () and a hydrocarbon-rich, nitrogen-depleted fraction (), and wherein the separation by rectification proceeds in a rectification column consisting of a preseparation column (T) and a main separation column (T). A liquid fraction () is taken off from the main separation column (T) above the feed-in site(s) of the fraction () that is taken off from the preseparation column (T) and fed to the main separation column (T), and the liquid fraction () is applied to the preseparation column (T) as reflux.