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Method of processing oil-shale or tar sand | 1982-03-16 | oil shale; tar sand; hydrogenating carbonization | Oil-shale or tar sand is subjected to hydrogenating carbonization and the residue is passed into a combustion zone wherein residual coke in the residue is reacted with oxygen. At least part of the heat produced in the combustion zone is used to heat the hydrogen to be used for the carbonization step... |
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