Process for removing arsenic from green coke derived from shale oil
AssigneeChevron Research Company
InventorByron G. Spars
Life of this patent
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Abstract
Arsenic is removed from green shale oil coke of high arsenic content by calcining the coke at 1500.degree. F. to 3000.degree. F. for 0.1 hr to 4 hr. The arsenic content is reduced from above about 150 to 300 ppm to below about 100 ppm, thereby making the coke suitable for use as a fuel, in electrodes for producing aluminum, or in steel making.
Claims8
A process for removing arsenic from green coke obtained by coking shale oil containing at least about 10 ppm arsenic comprising calcining the green coke at a temperature in the range of about 1500.degree. F. to about 3000.degree. F. for a time sufficient to reduce the arsenic content of the coke to below about 100 ppm.
Dependencies are inferred from the claim text.