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. 14, 2015
Filed:
Dec. 09, 2011
Applicants:
Jochen Bauer, Frankfurt, DE;
Frank Castillo-welter, Friedrichsdorf, DE;
Markus Kreich, Otzberg, DE;
Klaus Kirsten, Mainz, DE;
Christoph Steden, Oberursel, DE;
Dominic Walter, Darmstadt, DE;
Inventors:
Jochen Bauer, Frankfurt, DE;
Frank Castillo-Welter, Friedrichsdorf, DE;
Markus Kreich, Otzberg, DE;
Klaus Kirsten, Mainz, DE;
Christoph Steden, Oberursel, DE;
Dominic Walter, Darmstadt, DE;
Assignee:
Lurgi GmbH, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 3/22 (2006.01); B01D 3/32 (2006.01); C07C 51/44 (2006.01);
U.S. Cl.
CPC ...
B01D 3/32 (2013.01); B01D 3/322 (2013.01); C07C 51/44 (2013.01);
Abstract
A distillation column with external circulation evaporator and a sedimentation zone in the bottom of the column, from which the evaporator circulation is fed, and use of the distillation column for the distillation of acrylic acid.