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:
Feb. 21, 1989
Filed:
Oct. 30, 1987
Bipin V Vora, Darien, IL (US);
Norman H Scott, Arlington Heights, IL (US);
UOP Inc., Des Plaines, IL (US);
Abstract
A combined process for the dehydrogenation of C.sub.3 -C.sub.5 paraffins in a first zone and the conversion of olefins in a second zone improves efficiency by directly charging all but the lightest components of the dehydrogenation zone effluent to the olefin conversion zone. This process is particularly suited for the production of gasoline boiling range ethers where an isoparaffin is dehydrogenated in a first zone to produce isoolefins. After separation of hydrogen and methane, the dehydrogenation zone effluent is charged along with a C.sub.1 -C.sub.5 alcohol to an etherification zone for the production of ether. The etherification zone effluent is separated into at least two component streams one comprising light ends, isoparaffins, and oxygenates and the other comprising an ether product. After passage through an alcohol recovery zone, the isoparaffins are separated from the other lighter recycled material and combined with the feed to dehydrogenation zone. A particular arrangement of this invention uses an etherification zone for the production of MTBE and two fractionation columns to yield an overhead stream of light ends, a stream of recycle isoparaffins and methanol, and a product stream of MTBE. The arrangement also simplifies the recovery of oxygen containing compounds by allowing the use of only a methanol recovery zone without the additional cost of a separate oxygenate recovery unit.