Patent ID: 10221110

Abstract:
A process for dehydrating alkanes in which such feedstock mixtures may be used having a high proportion of olefins, i.e. approximately 1% by weight to 10% by weight. Specifically, alkenes having two to five carbon atoms are generated from alkanes having the same carbon length where the number of carbon atoms not change during by the dehydrogenation. The process is intended to be feasible on an industrial scale. A basic concept of the invention consists of hydrogenating alkenes present in the feedstock to the corresponding alkanes before they come in contact with the dehydrogenation catalyst. This avoids an undesired coke deposit. The hydrogenation is effected by minimal addition of hydrogen (80% to 120% of the stoichiometrically required amount). The hydrogenation is effected either over a dehydrogenation catalyst, or over the dehydrogenation catalyst itself.