Patent ID: 9624142
Date: 2017-04-18
CPC Classifications: C07C,Y02P

Claim:
1. A process for dehydrogenating a hydrocarbon selected from at least one of: i) paraffinic hydrocarbons selected from ethane, propane, and butane; and ii) alkylaromatic hydrocarbons selected from ethylbenzene, propylbenzene and methylethylbenzene; comprising contacting a gaseous stream containing at least one of the hydrocarbons with a dehydrogenation catalyst comprising gallium and platinum and carried by an alumina or alumina silica support, at reaction temperature and in concurrent rising flow, at a catalyst to gaseous stream ratio of 5 to 100 on a weight to weight basis, to a dehydrogenation reactor wherein the average contact time between the hydrocarbon and catalyst within the dehydrogenation reactor is from about 1 to about 8 seconds; and the temperature and pressure in the dehydrogenation reactor is from about 500 to about 800° C., and from about 14.7 to about 44.7 psia; transferring the hydrocarbon and catalyst from the dehydrogenation reactor to a two-staged solid-gas separation device; and transferring catalyst from the solid-gas separation device to a regenerator where the catalyst is contacted with combustion air and supplemental fuel.