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. 25, 2014
Filed:
Jul. 28, 2010
Cong-yan Chen, Alameda, CA (US);
Stephen J. Miller, San Francisco, CA (US);
James N. Ziemer, Martinez, CA (US);
Ann J. Liang, Walnut Creek, CA (US);
Cong-Yan Chen, Alameda, CA (US);
Stephen J. Miller, San Francisco, CA (US);
James N. Ziemer, Martinez, CA (US);
Ann J. Liang, Walnut Creek, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
The present invention relates to a multistage reforming process to produce a high octane product. A naphtha boiling range feedstock is processed in a multi-stage reforming process, in which the process involves at least 1) a penultimate stage for reforming the naphtha feedstock to produce a penultimate effluent 2) a final stage for further reforming at least a portion of the penultimate effluent 3) a regeneration step for the final stage catalyst. The severity of the penultimate stage can be increased during final stage catalyst regeneration in order to maintain the target RON of the reformate product and avoid reactor downtime.