Method of removing adsorbent contaminants from electrical appara

Details Method of removing adsorbent contaminants from electrical appara Method of removing adsorbent contaminants from electrical appara

1981-10-08

1984-11-20

Bashore, S. Leon

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 11, 134 221, 134 2219, 134 31, 141 48, 141 92, B08B 704, B08B 500

Patent

active

044837178

ABSTRACT:
A novel process for the removal of Polychlorinated Biphenyls (PCBs) and other adsorbed material from electrical apparatus to limit residual contamination to be less than a predetermined level; the process includes the steps for removal of the bulk fluid, subsequent solvent wash, repeated contact with penetrating solvent vapor, and cooling solvent soaks, with continuous solvent recovery.

REFERENCES:
patent: 3733218 (1973-05-01), Begun
patent: 3957531 (1976-05-01), Tipping et al.
patent: 4425949 (1984-01-01), Rowe, Jr.
Chemical Abstracts, vol. 96 (2), 1982, CA 9232s "Method of Destruction of PCB Contaminants in Oil."
Chemical Abstracts, vol. 99 (10), 1983, CA 73642q "Removing PCB from Oil."
Hutzinger et al., "The Chemistry of PCBs", CRC Press, Cleveland, Ohio, 1974, pp. 7-8, 14 and 15.
Kirk-Othmer, "Encyclopedia of Chemical Technology", John Wiley and Sons, N.Y., vol. 15, pp. 298-299 (3rd Edition).
Olmsted, "Transformer Askarel Removal to an EPA Clean Level", Conf. Res. of IAS Annual Mtg., Sep. 30-Oct. 5, 1979, pp. 1053-1055.
Parrish et al., "An Update on the Use, Labeling and Handling of Disposal of PCBs", Conf. Rec. of Annual Pulp Paper Ind. Tech. Conf. May, 1981, pp. 15-24.

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