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, 2009
Filed:
Oct. 27, 2004
Götz-peter Schindler, Mannheim, DE;
Andreas Brodhagen, Dannstadt-Schauernheim, DE;
Thorsten Johann, Limburgerhof, DE;
Thomas Hill, Ludwigshafen, DE;
Marcus Sigl, Ellerstadt, DE;
Regina Benfer, Altrip, DE;
Götz-Peter Schindler, Mannheim, DE;
Andreas Brodhagen, Dannstadt-Schauernheim, DE;
Thorsten Johann, Limburgerhof, DE;
Thomas Hill, Ludwigshafen, DE;
Marcus Sigl, Ellerstadt, DE;
Regina Benfer, Altrip, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process for preparing 1-butene, which includes nonoxidatively, catalytically dehydrogenating n-butane to obtain a product gas stream of n-butane, 1-butene, 2-butene, butadiene, hydrogen, and secondary constituents; removing hydrogen and the secondary constituents to obtain a Cproduct gas stream; separating the Cproduct stream into a recycle stream of n-butane and a stream of 1-butene, 2-butene and butadiene by extractive distillation, and recirculating the recycle stream to the dehydrogenation zone; introducing the 1 -butene, 2-butene and butadiene stream into a selective hydrogenation zone and selective hydrogenation of butadiene to 1-butene and/or 2-butene to obtain a stream of 1-butene and 2-butene; introducing the 1-butene and 2-butene stream, and a circulating stream of 1-butene and 2-butene into a distillation zone and isolation of a product stream; and introducing the 2-butene-containing stream into an isomerization zone to obtain a circulating stream of 1-butene and 2-butene, and recirculating the circulating stream to the distillation zone.