Process for decontaminating contaminated soils

Details Process for decontaminating contaminated soils Process for decontaminating contaminated soils

1990-10-24

1992-03-10

Bennet, Henry A.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 73, 34 22, 34 57A, F26B 300

Patent

active

050940120

ABSTRACT:
To decontaminate contaminated soil, a layer of the soil is formed on a gas-permeable support in a pressure housing, steam at a temperature from 100.degree. to 190.degree. C. and under a pressure from 1 to 12 bars is fed to the pressure housing and is passed through the layer, the vapor leaving the layer is withdrawn from the pressure housing and condensed. The condensate is purified and the solids are carried away as decontaminated soil.

REFERENCES:
patent: 3954069 (1976-05-01), Loken
patent: 4257168 (1981-03-01), Carroll et al.
patent: 4648332 (1987-03-01), Goedhart
patent: 4704804 (1987-11-01), Wyatt et al.
patent: 4962592 (1990-10-01), Orizand
patent: 4974335 (1990-12-01), Bege et al.
Kirk-Othmer, "Encyclopedia of Chemical Technology", Third Edition, vol. 21, p. 507, May 1983.

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