Mineral oils: processes and products – By treatment of solid mineral – e.g. – coal liquefaction – etc. – Specified agitation or circulation in gas contact zone
Patent
1989-11-13
1991-12-17
McFarlane, Anthony
Mineral oils: processes and products
By treatment of solid mineral, e.g., coal liquefaction, etc.
Specified agitation or circulation in gas contact zone
208410, 208411, 208154, 201 31, C10G 100
Patent
active
050732510
ABSTRACT:
A method for the recovery of oil from solid hydrocarbonaceous material and particularly from oil shale by retorting fresh feed shale and heat medium particles using a fluidized bed. The invention uses a self supporting dense phase fluidized bed in a retort without the need to use an external fluid for fluidization.
Also described is a control system for the method whereby feed stock input rate is controlled as a function of flow rate of oil vapour products given off, and whereby heat medium particle input rate is controlled as a function of the temperature of either the retort bed or of the oil vapor product.
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