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:
May. 15, 2012
Filed:
Jun. 03, 2010
Chunshe J. Cao, Houston, TX (US);
James H. Beech, Jr., Kingwood, TX (US);
Michael P. Nicoletti, Houston, TX (US);
Thomas H. Colle, Houston, TX (US);
Teng Xu, Hampton, NJ (US);
Stephen N. Vaughn, Kingwood, TX (US);
Chunshe J. Cao, Houston, TX (US);
James H. Beech, Jr., Kingwood, TX (US);
Michael P. Nicoletti, Houston, TX (US);
Thomas H. Colle, Houston, TX (US);
Teng Xu, Hampton, NJ (US);
Stephen N. Vaughn, Kingwood, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
Disclosed herein is a method of recovery of the activity of a molecular sieve catalyst following use of the catalyst in an OTO conversion process. This is achieved by a regeneration apparatus and a method of regenerating a molecular sieve catalyst, comprising two stages. In a pretreatment stage, the catalyst is pretreated under pretreatment conditions by heating the catalyst to a temperature of between 320° C. to 700° C. in an oxygen depleted medium for a residence time of between 1 minute to two hours; and, in a regeneration stage, the catalyst is regenerated under regeneration conditions by heating the catalyst at a temperature of between 200° C. to 700° C. in an oxidizing medium for a residence time of between 1 to 60 minutes.