Filtration of a coal liquid slurry using an ethylene vinyl...

Details Filtration of a coal liquid slurry using an ethylene vinyl... Filtration of a coal liquid slurry using an ethylene vinyl...

C - Chemistry, Metallurgy

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C10G 1/02 (2006.01) B01D 37/02 (2006.01) B01D 37/03 (2006.01) C10G 1/04 (2006.01)

Patent

CA 1134305

FILTRATION OF A COAL LIQUID SLURRY USING AN ETHYLENE VINYL ACETATE COPOLYMER AND AN ALCOHOL Abstract The rate of filtration of a coal liquid slurry is increased by adding an ethylene vinyl acetate copolymer and an alcohol containing 2 to 10 carbon atoms to the slurry prior to filtration or by adding the alcohol to the slurry and washing a precoat cake of filter aid with an oil solution of ethylene vinyl acetate copolymer prior to filtration. Although the ethylene vinyl acetate copolymer and the alcohol each provides a filter rate improving effect when used alone, a synergistic improvement in filtration rate is achieved by their combined use.

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