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:
Aug. 22, 1978
Filed:
Apr. 27, 1977
Steve A Gewartowski, Mt. Prospect, IL (US);
UOP Inc., Des Plaines, IL (US);
Abstract
A process for the production of alkylaromatic hydrocarbons by the alkylation of benzene wherein the alkylation zone effluent is fractionated to form a bottoms stream comprising benzene, the alkylaromatic hydrocarbon and a light paraffin. The light paraffin is then removed from the bottoms stream in a first recycle column which produces a recycled overhead stream comprising the paraffin and benzene. The bottoms stream of the first recycle column is separated in a second recycle column, which is operated at about the same bottom temperature but a lower pressure than the first recycle column. The benzene-rich overhead stream of the second recycle column is preferably recycled to the alkylation zone.