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. 14, 1993
Filed:
Jul. 22, 1992
Michael J Mitariten, Peekskill, NY (US);
UOP, Des Plaines, IL (US);
Abstract
A process is provided for the concentration and recovery of ethylene and heavier components from a hydrocarbon feedstream. A pressure swing adsorption (PSA) process is used to remove from hydrocarbon feedstream light cut comprising hydrogen, carbon monoxide, and methane and subsequently concentrate a heavy cut comprising the ethylene and heavy components in the PSA tail gas. In one aspect of the invention, an FCC off gas is separated into a light cut and a heavy cut and the heavy cut is routed to an ethylene plant. In another aspect of the invention, a C.sub.2 -rich stream is withdrawn from an ethylene plant and used to enhance the recovery of the ethylene and heavier stream in the PSA process and an ethylene-rich stream is returned to the ethylene plant.