Joseph M Dufallo

US Patent:

53150562, May 24, 1994

Filed:

Feb 14, 1992

Appl. No.:

7/837027

Inventors:

Robert J. Feldman - Passaic NJ
Joseph M. Dufallo - Randolph NJ
William A. Schwartz - Fogelsville PA
Theodore S. Williams - Middletown NJ

Assignee:

ABB Lummus Crest Inc. - Bloomfield NJ

International Classification:

C07C 5333
B01J 2392
B01J 3820
B01J 3804

US Classification:

585659

Abstract:

In a dehydrogenation process wherein catalyst is regenerated off-stream by use of heated air, at least two reactors are in the regeneration cycle, with regeneration air being heated to regeneration catalyst temperature for introduction into the first reactor, and thereafter being reheated to catalyst regeneration temperature and introduced into the second reactor. Such air may also be employed for preheating feed to the dehydrogenation reactor and/or for steam generation by heating such air to the temperature required for such procedure.