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. 17, 2012
Filed:
Feb. 20, 2006
Martin Sesing, Waldsee, DE;
Armin Diefenbacher, Germersheim, DE;
Hartwig Voss, Frankenthal, DE;
Olga Schubert, Ludwigshafen, DE;
Lothar Seidemann, Mannheim, DE;
Martin Karches, Neustadt, DE;
Thomas Grassler, Limburgerhof, DE;
Eckhard Stroefer, Mannheim, DE;
Martin Sesing, Waldsee, DE;
Armin Diefenbacher, Germersheim, DE;
Hartwig Voss, Frankenthal, DE;
Olga Schubert, Ludwigshafen, DE;
Lothar Seidemann, Mannheim, DE;
Martin Karches, Neustadt, DE;
Thomas Grassler, Limburgerhof, DE;
Eckhard Stroefer, Mannheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A catalytic process for preparing chlorine from hydrogen chloride, which includes recycle of process streams with reduced accumulation of inert gases in the system is provided. The process includes a step wherein a compressed liquid stream comprising chlorine, carbon dioxide and oxygen is recycled into a column countercurrent to the ascending gas phase and feeding part of the chlorine-rich liquid phase leaving the bottom of the column back into the top of the column. Carbon dioxide present in the ascending gas stream is dissolved out of the gas stream and can later be separated from chlorine without problems by distillation.