Process for destruction of halogenated organic compounds in solids
OwnerIan Gordon Norman Wylie, Nicola Dominelli +1inventors
InventorsIan Gordon Norman Wylie, Nicola Dominelli, Keith Cheuklap Lee
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Abstract
The invention provides processes for decontamination of organic halides in asphalt-containing wastes, such as PCBs in asphaltic potting compounds. The processes may use hydrocarbon solvents to dissolve the asphaltic waste, and an alkali metal reactant, such as a sodium dispersion, to destroy the organic halides in the dissolved mixture.
Claims23
A process for destruction of organic halides in an asphaltic waste, comprising:
- a) mixing an asphaltic waste entraining an organic halide with a solvent to produce a waste-solvent mixture;
- b) heating the waste-solvent mixture to a dissolving temperature for a dissolving time to produce a heated waste-solvent mixture in which the asphaltic waste is dissolved in the solvent so that the organic halide is released from the asphaltic waste;
- c) adding a destructive reactant to the heated waste-solvent mixture at a reaction temperature for a reaction time to produce a treated wastesolvent mixture in which the organic halide is substantially all reacted with the destructive reactant to destroy the organic halide.
A process for destruction of PCBs in an asphaltic potting compound waste, comprising:
- a) mixing an asphaltic potting compound waste entraining a PCB with a hydrocarbon solvent to produce a waste-solvent mixture;
- b) heating the waste-solvent mixture to a dissolving temperature for a dissolving time to produce a heated waste-solvent mixture in which the asphaltic potting compound waste is dissolved in the hydrocarbon solvent so that the PCB is released from the asphaltic potting compound waste;
- c) adding a sodium metal destructive reactant to the heated waste-solvent mixture at a reaction temperature for a reaction time to produce a treated waste-solvent mixture in which the PCB is substantially all reacted with the sodium metal destructive reactant to destroy the PCB.
An apparatus for carrying out a process for destruction of organic halides in an asphaltic waste, comprising:
- a) means for mixing an asphaltic waste entraining an organic halide with a solvent to produce a waste-solvent mixture;
- b) means for heating the waste-solvent mixture to a dissolving temperature for a dissolving time to produce a heated waste-solvent mixture in which the asphaltic waste is dissolved in the solvent so that the organic halide is released from the asphaltic waste;
- c) means for adding a destructive reactant to the heated waste-solvent mixture at a reaction temperature for a reaction time to produce a treated waste-solvent mixture in which the organic halide is substantially all reacted with the destructive reactant to destroy the organic halide.
Dependencies are inferred from the claim text.