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. 13, 2018
Filed:
Jul. 07, 2015
Basf SE, Ludwigshafen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
What is proposed is a column (K) comprising separatory internals (E) for separating a mixture of hydrocarbons and/or hydrocarbon derivatives () by extractive distillation with a selective solvent (), with supply of the selective solvent () in the upper region of the column and supply of the mixture of hydrocarbons and/or hydrocarbon derivatives to be separated () below the supply of the selective solvent (), the selective solvent () becoming laden in the column (K) with the components from the mixture to be separated () for which it has greater affinity and being withdrawn from the lower region of the column as laden selective solvent (),while, by contrast, the components from the mixture to be separated for which the selective solvent () has a lower affinity remain in the vapor phase and are withdrawn as top stream (),which is completely or partially condensed to obtain a condensate (),some of which is withdrawn as product stream (), the remainder being reintroduced to the column (K) as reflux (),wherein