PURPOSE: To reclaim a degraded oil efficiently, by immersing clay minerals of hydrous silicate in an alkali solution to give clay minerals of hydrous silicate with low silicate cntent, bringing the degraded oil into contact with the clay minerals of hydrous silicate with low silicate content to adsorb peroxides on them, removing the clay minerals.
CONSTITUTION: Clay minerals of hydrous silicate (preferably attapulgite, sepiolite, or talc) are immersed in an alkali aqueous solution having preferably 0.01W 10 normal alkali concentration at normal temperature for 1hrW6 days to give clay minerals of hydrous silicate with low silicate content, powder or the clay minerals of hydrous silicate with low silicate content having 0.01W20μm particle diameters is immersed in a degraded oil (e.g., lubricating oil of car, linseed oil, etc.) for 5minW1hr, brought into contact with it, peroxides in the degraded oil are adsorbed on the clay minerals, and the clay minerals are removed. 5W20wt% clay minerals are preferably immersed in the degraded oil.
EFFECT: The process has improved decoloring properties, and a reclaimed oil having increased transparency is obtained.
UEGAKITO OSAMI
HAYASHI HIROAKI
FUKUSHIMA YOSHIAKI
MORI KANJI
| JP36007168A | ||||
| JPS4937473A | 1974-04-08 |
Next Patent: REMOVAL OF PEROXIDE FROM DEGRADED OIL