Oxidative dehydrogenation of alkyl aromatic hydrocarbons
AssigneeFina Technology, Inc.
InventorJames R. Butler
Life of this patent
Estimating the term…
Abstract
Dehydrogenation processes and systems are described herein. In one embodiment, the process generally includes providing an alkyl aromatic hydrocarbon, providing a reaction zone including an oxidative dehydrogenation catalyst, introducing the alkyl aromatic hydrocarbon into the reaction zone, contacting the alkyl aromatic hydrocarbon with the oxidative dehydrogenation catalyst to form a vinyl aromatic hydrocarbon and withdrawing the vinyl aromatic hydrocarbon from the reaction zone. The process generally utilizes a catalyst to oil ratio that is at least 10:1.
Claims20
A dehydrogenation process comprising:
- providing an alkyl aromatic hydrocarbon;
- providing a reaction zone, wherein the reaction zone comprises an oxidative dehydrogenation catalyst;
- introducing the alkyl aromatic hydrocarbon into the reaction zone;
- contacting the alkyl aromatic hydrocarbon with the oxidative dehydrogenation catalyst to form a vinyl aromatic hydrocarbon;
- and
- withdrawing the vinyl aromatic hydrocarbon from the reaction zone, wherein the process comprises a catalyst to oil ratio that is at least 10:1.
A dehydrogenation system comprising:
- a downflow reaction vessel comprising a first inlet, a second inlet and an outlet, wherein the first inlet is adapted to receive an alkyl aromatic hydrocarbon, the second inlet is adapted to receive an oxidative dehydrogenation catalyst and the outlet is adapted to withdraw a vinyl aromatic hydrocarbon and at least a portion of the oxidative dehydrogenation catalyst therethrough;
- and
- wherein the oxidative dehydrogenation catalyst comprises a reducible oxide of vanadium supported on a material selected from metallo-silicate zeolites and oxides of a metal selected from Ti, Zr, Zn, Th, Mg, Ca, Ba, Si and Al.
A dehydrogenation process comprising:
- introducing an alkyl aromatic hydrocarbon to a reaction vessel;
- contacting the alkyl aromatic hydrocarbon with an oxidative dehydrogenation catalyst comprising a reducible oxide of vanadium supported on a material selected from metallo-silicate zeolites and oxides of a metal selected from Ti, Zr, Zn, Th, Mg, Ca, Ba, Si and Al to form a vinyl aromatic hydrocarbon, wherein the oxidative dehydrogenation catalyst is flowing through the reaction vessel via gravity;
- and
- withdrawing a vinyl aromatic hydrocarbon and at least a portion of the oxidative dehydrogenation catalyst from the reaction vessel.
Dependencies are inferred from the claim text.