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. 10, 2009
Filed:
Dec. 30, 2004
Thorsten Johann, Limburgerhof, DE;
Götz-peter Schindler, Mannheim, DE;
Andreas Brodhagen, Dannstadt-Schauernheim, DE;
Sven Crone, Limburgerhof, DE;
Mark Duda, Ludwigshafen, DE;
Thorsten Johann, Limburgerhof, DE;
Götz-Peter Schindler, Mannheim, DE;
Andreas Brodhagen, Dannstadt-Schauernheim, DE;
Sven Crone, Limburgerhof, DE;
Mark Duda, Ludwigshafen, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The disclosure involves a process for preparing butadiene from n-butane. In the process, n-butane is first dehydrogenated autothermally under nonoxidative conditions to form a gas stream. The gas stream is then oxidatively dehydrogenated to form a second gas stream. From the second gas stream, a third gas stream containing n-butane, 2-butene and butadiene is obtained. From the third gas stream, a butadiene/butaine product stream is obtained and remaining n-butane and 2-butene is recycled into the first dehydrogenation zone.