Method for cleaning oil-deposited material

Details Method for cleaning oil-deposited material Method for cleaning oil-deposited material

1993-04-15

1995-03-21

Andrews, Melvyn J.

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 26, 134 30, 134 40, B08B 302, B08B 304, B08B 700, C23G 500

Patent

active

053992032

ABSTRACT:
Disclosed herein are a method of cleaning an oil-deposited material, which comprises cleaning a material having oils deposited on the surface thereof with a cleaning agent comprising 25 to 90% by weight of at least one of compounds selected from the group consisting of pyrrolidones, .gamma.-butyrolactone and N,N-dimethylacetamide, and 10 to 75% by weight of water, then eliminating at least a portion of the deposited cleaning agent from said material to be cleaned by a physical means, and then applying water-washing with water, steam or water and steam; an apparatus for cleaning an oil-deposited materialhaving oils deposited on the surface thereof; and a cleaning agent therefor.

REFERENCES:
patent: 4376069 (1983-03-01), Maggi
patent: 4778532 (1988-10-01), McConnell et al.
patent: 5085795 (1992-02-01), Narayanan et al.
SU-1,627,593, Derwent abstract.
SU-1,249,067, Derwent abstract.

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