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. 16, 2008
Filed:
Jan. 20, 2004
Tan Jen Chen, Kingwood, TX (US);
Brian Erik Henry, Baton Rouge, LA (US);
Paul F Keusenkothen, Houston, TX (US);
Philip A. Ruziska, Kingwood, TX (US);
Tan Jen Chen, Kingwood, TX (US);
Brian Erik Henry, Baton Rouge, LA (US);
Paul F Keusenkothen, Houston, TX (US);
Philip A. Ruziska, Kingwood, TX (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
The present invention relates to a process for selectively producing Colefins from a catalytically cracked or thermally cracked naphtha stream. The process is practiced by recycling a Crich fraction of the catalytic naphtha product to the riser upstream the feed injection point, to a parallel riser, to the spent catalyst stripper, and/or to the reactor dilute phase immediately above the stripper.