Liquid purification or separation – With heater or heat exchanger
Patent
1990-04-11
1992-01-07
Dawson, Robert A.
Liquid purification or separation
With heater or heat exchanger
210188, 210348, 210513, 210909, 210911, 110221, 110224, 110236, 110238, 110241, F23G 714
Patent
active
050788680
ABSTRACT:
A method and apparatus for cleansing contaminated soil (11), the apparatus includes an extraction vessel (12) into which contaminated soil (11) is delivered together with a solvent. A slurry is produced which is delivered to a settler (18) which produces a settler underflow and contaminated solvent. The settler (18) underflow is delivered to a drier (23). The contaminated solvent passes through a filter (20) which produces a filter cake also delivered to the drier (23). The contaminated solvent passes through a distillation column (28) and is subsequently delivered to a plasma gun (35) whereat the contaminants are oxidized.
REFERENCES:
patent: 4509434 (1985-04-01), Boday et al.
patent: 4715965 (1987-12-01), Sigenson et al.
patent: 4765257 (1988-08-01), Abrishamian et al.
patent: 4770109 (1988-09-01), Schlienger
Dawson Robert A.
Reitsnyder David
Zenata N.V.
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