Fuel and related compositions – Coal treating process or product thereof – Removal of undesirable
Patent
1984-07-30
1989-02-14
McFarlane, Anthony
Fuel and related compositions
Coal treating process or product thereof
Removal of undesirable
44627, 208390, 423461, 423488, 423489, 423625, 423626, 201 17, C10L 500
Patent
active
048043907
ABSTRACT:
A process for removing mineral impurities such as metal oxides from coal and shale oil structures is disclosed. The process is carried out by subjecting crushed coal or shale to a hydrocarbon fluoride leaching solution, separating the HF leach liquor from the coal or shale, washing the coal or shale with water, leaching the washed coal or shale with hydrogen chloride solution, separating the HCl leach liquor from the coal or shale, washing the coal or shale with water, and removing residual impurities from the treated coal or shale by heating under a vacuum. The process allows for the recovery of carbons and hydrocarbons of high purity from coal or shale which do not require expensive emission control equipment when combusted.
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Lloyd Robert
Turner Maxwell J.
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