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. 03, 2015
Filed:
Dec. 27, 2012
Applicant:
Shell Oil Company, Houston, TX (US);
Inventors:
Leslie Andrew Chewter, Amsterdam, NL;
Rajaram Ramesh, Amsterdam, NL;
Jeroen Van Westrenen, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 1/22 (2006.01); C07C 41/06 (2006.01); C07C 1/20 (2006.01); C07C 7/08 (2006.01); C07C 41/42 (2006.01);
U.S. Cl.
CPC ...
C07C 1/22 (2013.01); C07C 41/06 (2013.01); C07C 1/20 (2013.01); C07C 7/08 (2013.01); C07C 41/42 (2013.01); C07C 2529/40 (2013.01); C07C 2529/70 (2013.01);
Abstract
The invention relates to a process for preparing lower olefins from an oxygenate, the process comprising: subjecting C4 hydrocarbons obtained in an oxygenate-to-olefins conversion step to extractive distillation to an etherification step to convert isobutene into an alkyl tertiary butyl ether to obtain an isobutene-depleted C4 hydrocarbon stream and alkyl tertiary-butyl ether;