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. 02, 2007
Filed:
Dec. 19, 2005
Applicants:
Willi Hofen, Rodenbach, DE;
Thomas Haas, Frankfurt, DE;
Bärbel Kolbe, Witten, DE;
Inventors:
Assignees:
Degussa AG, Düsseldorf, DE;
Uhde GmbH, Dortmund, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/80 (2006.01); C07C 29/82 (2006.01); C07C 29/74 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for recovering methanol from mixtures containing methanol and water, comprising multistage evaporation with heat integration, wherein the pressure is reduced from each stage to the next, and a downstream series of distillation stages with heat integration, wherein the pressure is increased from each stage to the next. The process reduces the amount of energy required for methanol recovery.