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:
May. 25, 1993
Filed:
Dec. 05, 1991
Applicant:
Inventors:
Stephen G Hall, Houston, TX (US);
Robert B Armstrong, Katy, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
585654 ; 585658 ; 585910 ;
Abstract
A process for making ethylenically unsaturated hydrocarbons from a saturated C.sub.3 -C.sub.5 hydrocarbon feed with improved heat recovery. The feed is partially vaporized against hot discharge gases from product compressors, completely vaporized with low pressure steam and preheated against hot reactor effluent, before being heated by a process heater to reaction temperature and catalytically dehydrogenated in an adiabatic reactor. The process is controlled by regulating the low pressure steam supplied to the vaporizer, the heat input to the process heater, and cooling water flow to the process coolers.