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:
Jan. 10, 2012
Filed:
Feb. 14, 2001
Wolfram Burst, Mannheim, DE;
Horst Hartmann, Böhl-Iggelheim, DE;
Gerd Kaibel, Lampertheim, DE;
Guido Harms, Limburgerhof, DE;
Wolfram Burst, Mannheim, DE;
Horst Hartmann, Böhl-Iggelheim, DE;
Gerd Kaibel, Lampertheim, DE;
Guido Harms, Limburgerhof, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A dividing wall column is described which includes the following segments: a) an upper column region (), b) an enrichment section () of the feed section, c) a stripping section () of the feed section, d) an upper part () of the offtake section, e) a lower part () of the offtake section, f) an intermediate region () of the feed section, g) an intermediate region () of the offtake section and h) a lower column region (). The dividing wall column has a dividing wall () is located vertically between the segments b) () and d) () and between the segments c) () and e) (). The segments b) (), d) (), c) () and e) () have separation-active internals, Segment b () has a cross-sectional area Awhich is at least 10% smaller than the cross-sectional area Aof segment d) (), and segment c) has a cross-sectional area Awhich is at least 10% greater than the cross-sectional area Aof segment e) ().