Maintaining VPO catalyst performance by aluminizing reactor internals in oxidation of butane to maleic anhydride
AssigneeThe Standard Oil Company
InventorJohn T. Shultz
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Abstract
Catalysts comprising a compound of vanadium, phosphorus and oxygen which are employed in the oxidation of n-butane to maleic anhydride are protected from contamination caused by side reactions which occur between the catalyst and steel process equipment by covering the process equipment surfaces which contact the catalyst at elevated temperatures with a coating comprising aluminum oxide.
Claims15
A fluid-bed process for the oxidation of n-butane to produce maleic anhydride wherein said process utilizes a catalyst comprising phosphorus, wherein metallic surfaces of process equipment which come into contact with the catalyst at elevated temperatures are covered with a coating comprising aluminum oxide.
A method for preventing contamination of a catalyst comprising phosphorus and employed in a fluid-bed chemical process for the oxidation of n-butane to produce maleic anhydride, wherein the method comprises covering the internal metallic surfaces of the process equipment which come into contact with the catalyst at elevated temperatures with a coating comprising aluminum oxide.
A method for preventing contamination of a catalyst comprising a compound of vanadium, phosphorus, and oxygen and employed in a fluid-bed process for the oxidation of n-butane to maleic anhydride, said contamination caused by a chemical reaction at elevated temperatures between components in the catalyst and the steel used in the construction of process equipment, said method comprising covering the steel surfaces of the process equipment which comes into contact with the catalyst at elevated temperatures with a coating comprising aluminum oxide.
Dependencies are inferred from the claim text.