Solvent recovery from waste oils

Details Solvent recovery from waste oils Solvent recovery from waste oils

1994-01-26

1995-07-04

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 52, 203 67, 203 68, 203 98, 570178, B01D 334

Patent

active

054297206

ABSTRACT:
A distillation process for separating spent organic solvents such as trichloroethane or d-limonene from their contaminants such as oil is improved by the addition of a perfluorinated alkane or mixture of such alkanes to permit more efficient separation of the solvents from the oil.

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patent: 4950364 (1990-08-01), Wismer
CA 118(2):8875q, Weemes et al.
"Developments in the Alcohol/PFC Cleaning Process", B. H. Baxter, Proceedings of the 1992 International CFC and Halon Alternatives Conference, pp. 479-485.

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