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. 01, 2011
Filed:
Jun. 16, 2006
John S. Godsmark, Grez Doiceau, BE;
Georges M. K. Mathys, Bierbeek, BE;
Hubertus J. Beckers, Keerbergen, BE;
Raphael F. Caers, Edegem, BE;
Roger Eijkhoudt, GC Breda, NL;
Stephen H. Brown, Bernardsville, NJ (US);
John S. Godsmark, Grez Doiceau, BE;
Georges M. K. Mathys, Bierbeek, BE;
Hubertus J. Beckers, Keerbergen, BE;
Raphael F. Caers, Edegem, BE;
Roger Eijkhoudt, GC Breda, NL;
Stephen H. Brown, Bernardsville, NJ (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
Water reacts on molecular sieve catalysts used in oligomerization reactions and forms oxygenated compounds, in particular organic acids that may cause corrosion problems downstream of the reactor, in particular in distillation tower overhead systems and downstream thereof. A lowering of the presence of water in the feed prior to contacting thereof with the molecular sieve brings a significant reduction in corrosion downstream. At the same time, it has a significant beneficial effect on catalyst activity and brings a significant extension of catalyst life. Lowering water in the feed is particularly effective when organic nitrogen-containing Lewis bases are present in the feed, even at low levels.