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:
May. 22, 1979
Filed:
Jul. 24, 1978
Ralph Levine, Freehold, NJ (US);
Cities Service Company, Tulsa, OK (US);
Abstract
Tertiary butyl alcohol, containing some water, is dehydrated to isobutylene in the presence of a catalyst and a hydrocarbon which forms an azeotrope with water. Isobutylene, water, and the hydrocarbon are passed through a condenser to a phase separator from which isobutylene is recovered, preferably as a vapor phase, hydrocarbon is recycled to the dehydration zone, and a water phase removed from the process. The alcohol feed point location is the phase separator. A significant fraction of water contained in the tertiary butyl alcohol feed can be removed inexpensively, by phase separation, in the separator, to minimize the amount of water entering the dehydration zone.