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:
Nov. 18, 2014
Filed:
Mar. 21, 2012
Dietrich Maschmeyer, Recklinghausen, DE;
Dietrich Maschmeyer, Recklinghausen, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
A process for preparing 1-butene and a 1,3-butadiene derivative, containing the steps of a) non-oxidatively catalytically dehydrogenating a feedstock gas stream containing n-butane, hydrogen, other low-boiling secondary constituents and high boilers, to form a product mixture containing unreacted n-butane, 1-butene, 2-butenes, 1,3-butadiene, hydrogen, other low-boiling secondary constituents and high boilers; b) removing hydrogen, other low boilers and high boilers, to give a product mixture containing n-butane, 1-butene, two 2-butenes and 1,3-butadiene; c) reacting some of the 1,3-butadiene obtained in the removing b), to form a derivative; d) removing the 1,3-butadiene derivative obtained in the reacting c); e) selectively hydrogenating the 1,3-butadiene not derivatized in the reacting c), to form 1-butene; and f) distillatively removing 1-butene from the hydrocarbon stream obtained in the hydrogenating e), to leave a residual stream.