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:
Sep. 11, 2018
Filed:
Jun. 12, 2015
Bp Chemicals Limited, Middlesex, GB;
Timothy Crispin Bristow, East Yorkshire, GB;
BP CHEMICALS LIMITED, Middlesex, GB;
Abstract
Process for producing dimethyl ether from gaseous mixtures of CO, Hand methyl acetate (MeOAc) contaminant by contacting a gaseous mixture of CO, Hand MeOAc contaminant in a first scrubbing zone with methanol to recover a scrubbed gaseous mixture depleted in MeOAc and a used methanol stream containing MeOAc. The scrubbed gaseous mixture is contacted in a second scrubbing zone with methanol to recover a scrubbed gaseous mixture further depleted in MeOAc and a second used methanol stream containing no or a reduced amount of MeOAc compared to the first used methanol stream. A portion of the second used methanol stream is dehydrated in the presence of a catalyst to produce a crude dehydration reaction product containing dimethyl ether, unconverted methanol and water. A water stream is recovered from the crude dehydration product containing water and 3 mol % or less acetic acid and a dimethyl ether stream.