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:
Dec. 30, 2014
Filed:
Nov. 23, 2010
Applicants:
Paul Hamilton, Brussels, BE;
John S. Godsmark, Antwerp, BE;
David E. Heather, Hampshire, GB;
Inventors:
Assignee:
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/303 (2006.01); C07C 29/04 (2006.01); C07C 2/04 (2006.01); B01J 29/40 (2006.01); B01J 29/70 (2006.01); B01J 29/80 (2006.01); B01J 29/90 (2006.01); B01J 35/00 (2006.01); C07C 2/12 (2006.01); C10G 50/00 (2006.01); C08F 110/06 (2006.01); C08F 210/16 (2006.01);
U.S. Cl.
CPC ...
B01J 29/40 (2013.01); B01J 29/7026 (2013.01); B01J 29/7042 (2013.01); B01J 29/80 (2013.01); B01J 29/90 (2013.01); B01J 35/0006 (2013.01); C07C 2/12 (2013.01); C10G 50/00 (2013.01); C08F 110/06 (2013.01); C08F 210/16 (2013.01); C10G 2300/4031 (2013.01); C10G 2300/1088 (2013.01); C10G 2400/20 (2013.01); C10G 2400/22 (2013.01);
Abstract
The startup of a tubular reactor containing fresh or regenerated molecular sieve catalyst and cooled by steam generation on the shell side, as part of an olefin oligomerization process, is improved by, during the startup phase of the reactor, controlling the pressure on the shell side of the reactor at maximum 10 barg. The startup may be further improved by controlling the inlet temperature of the hydrocarbon startup stream to the reactor, by controlling the flow of reactant olefins to the reactor, or by controlling the nature and/or concentration of the olefins in the reactor feed.