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US 9,314,785 B1Granted
Ketonization process using oxidative catalyst regeneration
AssigneeChevron U.S.A. Inc.
InventorSven Ivar Hommeltoft
Life of this patent
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Abstract
Processes for fatty acid ketonization and alcohol dehydration, wherein an alumina catalyst disposed in, or removed from, a reaction zone may be regenerated by contacting the catalyst with steam during or after a coke oxidizing step. In an embodiment, such processes may provide C2-C43 alkenes. In another embodiment, such processes may provide C11-C43 ketones, which can be deoxygenated to give saturated hydrocarbons, unsaturated hydrocarbons, and mixtures thereof. Base oils and transportation fuels may be produced via such processes.
Claims22
A process comprising:
- a) contacting a reactant with a catalyst in a reaction zone under reaction conditions to provide a product;
- b) after interrupting step a), contacting the catalyst with a flushing gas to remove the reactant and the product from the catalyst;
- c) contacting the catalyst with an oxidizing gas to remove coke from the catalyst;
- and
- d) contacting the catalyst with steam to provide regenerated catalyst, wherein the reaction zone is selected from the group consisting of a ketonization zone and an alcohol dehydration zone.
2 more elements
A process comprising:
- a) contacting a catalyst with a flushing gas in a reaction zone selected from the group consisting of a ketonization zone and an alcohol dehydration zone;
- b) contacting the catalyst with an oxidizing gas to remove coke from the catalyst;
- and
- c) contacting the catalyst with steam to provide regenerated catalyst, wherein the catalyst consists essentially of alumina.
1 more element
A process comprising:
- a) contacting a reactant with a catalyst in a ketonization zone under ketonization conditions to provide a product;
- b) after interrupting step a), contacting the catalyst with a flushing gas to remove the reactant and the product from the catalyst;
- c) after step b), contacting the catalyst with an oxidizing gas to remove coke from the catalyst;
- d) after or during step c), contacting the catalyst with steam to provide regenerated catalyst;
- and
- e) purging steam from the regenerated catalyst, wherein:
- the catalyst comprises alumina,
- the reactant is selected from the group consisting of a C6-C22 fatty acid, a C6-C22 fatty acid derivative, and combinations thereof, and
- the product comprises a C11-C43 ketone.
6 more elements
Dependencies are inferred from the claim text.