Furnaces – Process – Incinerating refuse
Patent
1990-12-13
1991-12-17
Favors, Edward G.
Furnaces
Process
Incinerating refuse
110229, 110236, 432 14, F23G 500
Patent
active
050726749
ABSTRACT:
A method and apparatus for removing volatile organic contaminants from soil including removing contaminated soil from the earth; transporting and placing the contaminated soil into a soil hopper, the hopper being substantially sealed from the atmosphere to prevent fugitive emissions of the contaminants from escaping into the atmosphere; conveying the soil under sealed conditions into a heated vapor stripping conveyor having moving flights; conveying the soil under sealed conditions along the vapor stripping conveyor and in close contact with the flights to heat the soil to a temperature below the boiling temperatures of the contaminants, thereby causing moisture in the soil and the contaminants to be stripped from the soil; streaming non-oxidizing gases having a greater than ambient temperature across the surface of the soil to carry the contaminants and moisture across and away from the soil; and maintaining the rate of flow and temperature of the gases to prevent undue surface drying of the soil as the soil passes through the conveyor.
REFERENCES:
patent: 4339999 (1982-07-01), Fio Rito et al.
patent: 4947767 (1990-08-01), Collette
patent: 4957429 (1990-09-01), Mendenhall
patent: 4974528 (1990-12-01), Barcell
Noland John
Velazquez Luis A.
Favors Edward G.
Miller Austin R.
Roy F. Weston, Inc.
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