Transformer oil processing

Details Transformer oil processing Transformer oil processing

1977-06-29

1979-03-20

Levine, Herbert

Mineral oils: processes and products

Oxidation of mineral oils

208 14, C10G 2700, C10G 3400

Patent

active

041452739

ABSTRACT:
A transformer oil processing sequence is disclosed. The process comprises contacting a naphthenic based oil with an oxygen-containing gas in the presence of a permanganate under mild oxidation conditions of temperature and pressure and caustic washing the resultant product. The caustic washed product is then subjected to two pass hydrogenation to provide a transformer oil having superior Doble oxidation resistance values.

REFERENCES:
patent: 1988731 (1935-01-01), Haslam
patent: 2365220 (1944-12-01), Schultz et al.
patent: 2370228 (1945-02-01), Bruun et al.
patent: 2905704 (1959-09-01), Hirschler
patent: 3849288 (1974-11-01), Milstein et al.

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