Patent ID: 7790942
Filing Date: 2010-09-07
Classification: B01J,C07C,C22C,C23C,Y02P,Y02T

Abstract:
1. A process for continuous heterogeneously catalyzed partial dehydrogenation of at least one hydrocarbon to be dehydrogenated in the gas phase, comprising a procedure in which a reaction chamber which is enclosed by a shell which is in contact with the reaction chamber and has at least one first orifice for feeding at least one starting gas stream into the reaction chamber and at least one second orifice for withdrawing at least one product gas stream from the reaction chamber, at least one starting gas stream comprising at least one hydrocarbon to be dehydrogenated is fed continuously, in the reaction chamber, the at least one hydrocarbon to be dehydrogenated is passed through at least one catalyst bed disposed in the reaction chamber and, with generation of a product gas comprising the at least one dehydrogenated hydrocarbon, unconverted hydrocarbon to be dehydrogenated and molecular hydrogen and/or steam, is dehydrogenated partially in an oxidative or nonoxidative manner to at least one dehydrogenated hydrocarbon, and at least one product gas stream is withdrawn continuously from the reaction chamber, wherein the surface of the shell, on its side in contact with the reaction chamber, is manufactured at least partly, in a layer thickness d of at least 1 mm, from a steel S which has the following elemental composition: