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:
Oct. 02, 2007
Filed:
Aug. 15, 2003
James H. Beech, Kingwood, TX (US);
Richard E. Walter, Long Valley, NJ (US);
Shun Chong Fung, Bridgewater, NJ (US);
Peter N. Loezos, Houston, TX (US);
Marcel Johannes Janssen, Kessel-Lo, BE;
Stephen Neil Vaughn, Kingwood, TX (US);
James H. Beech, Kingwood, TX (US);
Richard E. Walter, Long Valley, NJ (US);
Shun Chong Fung, Bridgewater, NJ (US);
Peter N. Loezos, Houston, TX (US);
Marcel Johannes Janssen, Kessel-Lo, BE;
Stephen Neil Vaughn, Kingwood, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
The invention is directed to methods of shutting down reaction systems. The reaction systems are those that use catalysts that comprise molecular sieves, particularly metalloaluminophosphate molecular sieves, especially metalloaluminophosphate molecular sieves which are susceptible to loss of catalytic activity due to contact with water molecules. The methods provide appropriate mechanisms of stopping feed to the reactor and unloading catalyst to protect against loss of catalytic activity that can occur due to contact with water molecules.