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. 27, 2004
Filed:
Nov. 26, 2002
Roland Hourticolon, Leichlingen, DE;
Guenther Demmering, Solingen, DE;
Hans-Peter Kubersky, Solingen, DE;
Lothar Friesenhagen, Duesseldorf, DE;
Friedrich Hommers, Duesseldorf, DE;
Juergen Latzel, Wuppertal, DE;
Eberhard Peukert, Hilden, DE;
Hans-Guenther Richard, Duesseldorf, DE;
Udo Kreutzer, Monheim, DE;
Cognis Deutschland GmbH & Co. KG, Dusseldorf, DE;
Abstract
Naturally occurring fats, oils and fatty derivatives are continuously hydrogenated to fatty alcohols in a fixed-bed reactor in the presence of hydrogen in excess and hydrogenation catalysts under static pressures of 50 to 300 bar and at temperatures of 160 to 320° C. The liquid product is cooled and the excess hydrogen is returned to the reactor entrance by a gas circulation pump as a recycle gas after separation of the liquid product. The expense involved in cooling and reheating the recycle gas is eliminated without any reduction in the quality of the fatty alcohol produced providing the recycle gas is returned to the reactor entrance without reheating and the hydrogenation reaction is carried out under static pressures of at least 200 bar.