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:
Nov. 06, 2001
Filed:
May. 19, 2000
Paul K. Ladwig, Randolph, NJ (US);
John E. Asplin, Houston, TX (US);
Gordon F. Stuntz, Baton Rouge, LA (US);
William A. Wachter, Baton Rouge, LA (US);
Brian Erik Henry, Katy, TX (US);
Shun C. Fung, Bridgewater, NJ (US);
Tan-Jen Chen, Kingwood, TX (US);
Jay F. Carpency, Seabrook, TX (US);
Ronald G. Searle, Houston, TX (US);
ExxonMobile Chemical Patents, Inc., Houston, TX (US);
Abstract
A process for producing propylene from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures from about 500° C. to 650° C. and a hydrocarbon partial pressure from about 10 to 40 psia. A separate stream containing aromatics may be co-fed with the naphtha stream.