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:
Apr. 05, 1994
Filed:
Jun. 23, 1993
Applicant:
Inventors:
Wolfgang Hofs, Oberhausen, DE;
Thomas Muller, Dinslaken, DE;
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; F16F / ;
U.S. Cl.
CPC ...
568853 ; 165 71 ; 568862 ; 568881 ;
Abstract
A process for the catalytic hydrogenation of organic compounds in the gas phase. The reaction product-containing circulating gas leaving the hydrogenation reactor is compressed without prior cooling, and is then used to heat the starting materials in a superheater to the reaction temperature. The circulating gas stream is further cooled in a hot-gas heat exchanger by cold reactants in a counter-current manner; as a result, substantially all the reaction product condenses out leaving recycle gas. After addition of fresh gas and starting material, the recycle gas is returned via a purification column to the hydrogenation reactor.