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:
Jun. 28, 2016
Filed:
Jun. 03, 2013
Applicant:
L'air Liquide, Societe Anonyme Pour L'etude ET L'exploitation Des Procedes Georges Claude, Paris, FR;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 41/09 (2006.01); B01J 8/02 (2006.01); B01J 21/04 (2006.01); B01J 35/04 (2006.01); B01J 35/02 (2006.01);
U.S. Cl.
CPC ...
C07C 41/09 (2013.01); B01J 8/02 (2013.01); B01J 8/0285 (2013.01); B01J 21/04 (2013.01); B01J 35/04 (2013.01); B01J 35/02 (2013.01); B01J 2208/00061 (2013.01); B01J 2208/00539 (2013.01); B01J 2208/027 (2013.01);
Abstract
A method for starting up a DME synthesis reactor in which methanol is converted by dehydration to dimethyl ether on a solid catalyst, wherein the catalyst is heated up with condensing methanol vapor, possibly in several steps. In a final treatment step with superheated methanol vapor, the catalyst is dried and its temperature is raised to the starting temperature of the methanol dehydration.