Filtration of a coal liquid slurry using polyisobutylene and an

Details Filtration of a coal liquid slurry using polyisobutylene and an Filtration of a coal liquid slurry using polyisobutylene and an

1979-05-07

1981-04-07

Wyse, Thomas G.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210729, 210777, 208 8LE, B01D 3702, C10G 104

Patent

active

042604850

ABSTRACT:
The rate of filtration of a coal liquid slurry is increased by adding polyisobutylene 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 polyisobutylene prior to filtration. Although the polyisobutylene and the alcohol each provides a filtration rate improving effect when used alone, a synergistic improvement in filtration rate is achieved by their combined use.

REFERENCES:
patent: 3242073 (1966-03-01), Guebert et al.
patent: 3492225 (1970-01-01), Ryzhar
patent: 4029567 (1977-06-01), Farnard et al.
patent: 4030893 (1977-06-01), Keller
patent: 4046690 (1977-09-01), Rodgers
patent: 4079004 (1978-03-01), Tan et al.
patent: 4094770 (1978-06-01), Bose
patent: 4141691 (1979-02-01), Antonetti et al.
patent: 4156649 (1979-05-01), Quinn et al.

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