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:
Feb. 25, 2003
Filed:
Jul. 22, 1994
Thomas W. Bierl, West Chester, PA (US);
Vincent A. Durante, West Chester, PA (US);
Lawrence H. Finkel, Wayne, PA (US);
Daniel E. Resasco, Norman, OK (US);
Sunoco, Inc. (R&M), Philadelphia, PA (US);
Abstract
The invention provides process and apparatus for conducting an endothermic reaction of an organic compound in the presence of molecular hydrogen and of multicomponent solids. The process comprises contacting the compound with a solid catalyst for the endothermic reaction and a hydrogen oxidizing solid reagent intermixed with the solid catalyst. Organic products of the endothermic reaction are produced, with evolution of molecular hydrogen. The solid catalyst becomes gradually deactivated by formation of carbonaceous deposits thereon. The evolved hydrogen undergoes an exothermic reaction with the hydrogen oxidizing solid reagent to form a reduction product which comprises deactivated hydrogen oxidizing solid reagent. The deactivated solid catalyst is reactivated by combustion of carbonaceous deposits thereon and the deactivated hydrogen oxidizing solid reagent is reactivated by contacting the reagent with an oxidizing agent in the absence of substantial quantities of hydrogen and in the absence of substantial quantities of organic compounds other than those on the surface of the reagent. One embodiment of the invention provides apparatus in which an endothermic reaction is carried out in the presence of a fluidized bed of catalyst and in the presence of particles of granular hydrogen oxidizing solid reagent which move downwardly through the fluidized catalyst bed, and in which the solid catalyst and solid reagent are separated prior to reactivation thereof in separate reactivation zones.