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:
Oct. 29, 1996
Filed:
Aug. 02, 1995
Weldon K Bell, Pennington, NJ (US);
Stephen H Brown, Princeton, NJ (US);
Jeffrey C Trewella, Kennett Square, PA (US);
Mobil Oil Corporation, Fairfax, VA (US);
Abstract
A multistaged fixed catalyst bed process for the production of diisopropyl ether and isopropanol is disclosed comprising a fixed bed of serially connected stages containing zeolite Beta catalyst. A feedstream of propylene and water equivalents selected from the group consisting of water, isopropanol and diisopropyl ether is introduced into each stage at a rate sufficient to provide a mole ratio of water equivalents to propylene equivalents that increases in increments by stage from at least 0.1 in a first stage to at most 1.2 in a final stage. The feedstream is introduced at a temperature between 50.degree. and 450.degree. C., pressure between 700 and 24000 kPa, and weight hourly space velocity between 0.10 and 30, based on catalyst, whereby a single non-aqueous liquid phase is maintained in the fixed bed. An effluent product stream is recovered comprising diisopropyl ether, isopropanol and water from the final stage. Isopropanol is recycled to the first stage when the preferred product is diisopropyl ether. When the preferred product is isopropanol, diisopropyl ether and water are recycled to the first stage.