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:
Jul. 01, 2014
Filed:
Jan. 08, 2013
Basf SE, Ludwigshafen, DE;
Bernd Heida, Ellerstadt, DE;
Randolf Hugo, Dirmstein, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Mixtures of hydrocarbons predominantly having 4 carbon atoms per molecule known as Ccuts are used in obtaining crude 1,3-butadiene by a thermal cracking process. Vaporous purified crude Ccuts are produced from liquid crude Ccuts, containing butanes, butenes, 1,3-butadiene, Chydrocarbons, Coligomers and polymers, and Chydrocarbons via an extractive distillation by fist removing the Coligomers and polymers and the Chydrocarbons and then vaporizing the liquid crude Ccut in a vaporizer vessel. The vaporizer vessel is directly or indirectly in contact with a stripping column where liquid Ccuts are supplied to the upper region, direct gas and liquid exchange with the vaporizer vessel occurs in the lower region, and vaporous purified crude Ccuts are removed from the top region.