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AssigneeChemical Waste Management, Inc.
InventorsEdward G. Fochtman, Peter S. Daley, Milton Ader, Albert G. Plys, Carl P. Swanstrom, James F. Grutsch
Estimating the term…
A method for economically separating chemical contaminants such as volatile organic chemicals (VOC's) and polychlorinated biphenyls (PCB's), even if the contaminants are present at low concentrations, from inert materials such as soils or sludges, comprising subjecting inert materials contaminated with chemical compounds to a temperature effective to volatilize the contaminants but below incineration temperature, with continuous removal of evolved vapors, for a period of time sufficient to effect the desire degree of separation of contaminants. The evolved vapors may be subjected to catalytic oxidation to destroy the volatilized chemical compounds.
A method for separating chemical contaminants from contaminated feed materials comprising, subjecting the feed materials contaminated with chemical compounds to a temperature effective to volatilize the contaminants, but below incineration temperature, with substantially continuous removal of evolved vapors having chemically oxidizable compounds, for a period of time sufficient to effect a desired degree of separation of the contaminants from the feed materials, wherein the evolved vapors are catalytically oxidized in the presence of steam at gas phase conditions, to convert substantially all of the chemically oxidizable compounds, thereby producing a gaseous reaction product comprising substantially steam and incondensable gases.
A method for separating organic contaminants from contaminated inert solids comprising, in combination, the steps of:
A continuous method for separating organic contaminants from contaminated inert solid material comprising, in combination, the steps of:
A method for separating chemical contaminants from contaminated feed materials comprising, subjecting the feed materials contaminated with chemical compounds to a temperature effective to volatilize the contaminants, but below incineration temperature, with substantially continuous removal of evolved vapors having chemically oxidizable compounds, for a period of time sufficient to effect a desired degree of separation of the contaminants from the feed materials, wherein the evolved vapors are catalytically oxidized in the presence of steam, at gas phase conditions to convert substantially all of the chemically oxidizable compounds, thereby producing a gaseous reaction product comprising substantially steam and incondensable gases.
A continuous method for separating chemical contaminants from contaminated inert solid material comprising, in combination, the steps of:
Dependencies are inferred from the claim text.