Process and apparatus for recovering residual oil from solids de

Details Process and apparatus for recovering residual oil from solids de Process and apparatus for recovering residual oil from solids de

1974-10-03

1976-04-13

Sofer, Jack

Distillation: processes, separatory

With disparate physical separation

Utilizing removing solid from liquid

202174, 202185R, 159 1RW, 159 13A, 159 16S, 159 17R, 159 49, 159DIG25, 159 20R, 159DIG33, 203 72, 203 40, 01D 302, 01D 122, B01D 300, B01D 2100

Patent

active

039502309

ABSTRACT:
Process and apparatus for recovering residual oil from solids previously substantially dehydrated by a process wherein a slurry of water-wet solids in oil is subjected to a heat evaporation step to substantially remove the water. The oil is then largely expressed from the solids after which the solids still containing some oil as residual oil are extracted with a relatively low viscosity and relatively volatile water-immiscible light oil. The light oil-laden solids are then brought into direct contact with steam whereby the presence of the steam effectively reduces the boiling point of the water-immiscible light oil to effect its more efficient removal from the solids. Excess externally supplied steam and light oil vapor are used to supply heat to the overall process.

REFERENCES:
patent: 1997980 (1935-04-01), Smith
patent: 2151079 (1939-03-01), Bowen
patent: 3304991 (1967-02-01), Greenfield
patent: 3323575 (1967-06-01), Greenfield
patent: 3716458 (1973-02-01), Greenfield et al.
patent: R26317 (1967-12-01), Greenfield
patent: R26352 (1968-02-01), Greenfield

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