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:
Jan. 26, 2016
Filed:
Jun. 28, 2010
Mark William Stewart, Pearland, TX (US);
Howard W. Clark, Lake Jackson, TX (US);
Duncan Paul Coffey, Lake Jackson, TX (US);
Lin Luo, Sugar Land, TX (US);
Albert E. Schweizer, Jr., Port St. Lucie, FL (US);
Mark William Stewart, Pearland, TX (US);
Howard W. Clark, Lake Jackson, TX (US);
Duncan Paul Coffey, Lake Jackson, TX (US);
Lin Luo, Sugar Land, TX (US);
Albert E. Schweizer, Jr., Port St. Lucie, FL (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A process to prepare an olefin from its corresponding alcohol is improved by reacting, under reaction conditions including a first temperature, an aliphatic alcohol and, optionally, diluent water, to form a reaction product including at least a dialkyl ether. The product is then reacted again, under higher temperature to complete the dehydration of the dialkyl ether to the desired olefin. This process is particularly suitable to prepare ethene from ethyl alcohol. The stepped temperature scheme serves to reduce the formation of byproduct aldehydes, which in turn reduces coke formation, fouling, and the need to handle large amounts of water, thereby lowering energy and capital costs.