Latest Inventions  Technologies of purification METHOD AND DEVICE FOR WITHDRAWAL OF OIL FROM SOLID OIL-CONTAINING MATERIALS
METHOD AND
DEVICE FOR WITHDRAWAL OF OIL FROM SOLID OIL-CONTAINING MATERIALS
FIELD: continuous withdrawal of oil from solid
agents such as oilbearing sands, plants or other solid matter by means of
solvent.
SUBSTANCE: due to pressure differential between
outer inner spaces of oil extraction chamber, solid agents which practically
contain no oil may be removed from extraction chamber through solid agent
removal passage without removal of considerable volume of solvent. Pressure
differential is at least 2 pound/inch (0.141 kg/sq.cm).
EFFECT: enhanced efficiency. 50 cl, 5 dwg
KhEhFFELI Gari R. (US),
ALLEN Peter A. (US), DUNKEL Gari L. (US), VEGNER Pol S. (US)
Patent number: 2181612
Publishing date: May 28, 2002
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