Title:
METHOD OF REFINING ELECTRICALLY INSULATING LIQUID
Document Type and Number:
Japanese Patent JPS579002
Kind Code:
A
Abstract:
A method of efficiently eliminating impurities, particularly of low molecular weight and low concentration, from electric insulating liquids by means of applying an electric field to the electric insulating liquid to charge the contaminant particles therefrom and then contacting the thus-treated liquid with at least one absorbent to remove the charged contaminant particles from said liquid by means of an absorbent having ion-radicals in its structure, such as zeolite, and then eliminating the rough particles therefrom by means such as a percolator, centrifuge or percipitation tank (7). In certain cases wherein a large amount of contaminants which interfere with the insulating properties of the electric insulating liquid are present, the electric insulating liquid is first heated and subsequently contacted with an absorbent prior to the step of applying an electric field to preliminary remove contaminants therefrom.
Inventors:
INOUE NOBORU
Application Number:
JP8383480A
Publication Date:
January 18, 1982
Filing Date:
June 19, 1980
Export Citation:
Assignee:
INOUE SANGYO
International Classes:
B01D15/00; B03C5/00; H01B3/20; C10G25/00; C10G32/02; (IPC1-7): H01B3/20
Domestic Patent References:
| JP36015620A | ||||
| JPS5295099A | 1977-08-10 | |||
| JPS5294000A | 1977-08-08 | |||
| JPS5513175A | 1980-01-30 | |||
| JPS523802A | 1977-01-12 | |||
| JPS53143999A | 1978-12-14 |