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US 4,243,639 AGranted
Method for recovering vanadium from petroleum coke
AssigneeTosco Corporation
InventorsFrank C. Haas, William K. Hesse
Life of this patent
Estimating the term…
Abstract
Petroleum coke containing inorganic compounds including vanadium is gasified with steam in the presence of an alkali metal salt gasification catalyst to produce a combustible gas and an inorganic ash composed primarily of said inorganic compounds and a water soluble alkali metal vanadate and the inorganic ash is placed in a sufficient amount of water to dissolve the vanadate compound and then is recovered by conventional means.
Claims11
A method for recovering at least about 70 weight % of the vanadium contained in petroleum coke which comprises:
- heating a mixture of petroleum coke containing inorganic compounds including vanadium and an alkali metal salt gasification catalyst in the presence of steam at a sufficient temperature to gasify the carbon in the coke with said steam and produce a combustible gas and inorganic ash composed predominantly of said inorganic compounds and a water soluble alkali metal vanadate, adding said inorganic ash to water to dissolve said water soluble alkali metal vanadate and recovering said dissolved vanadate from said water.
Dependencies are inferred from the claim text.