Demulsification of bitumen emulsions with a high molecular weigh

Details Demulsification of bitumen emulsions with a high molecular weigh Demulsification of bitumen emulsions with a high molecular weigh

1980-05-22

1982-03-23

Wyse, Thomas G.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

208 11R, 208188, 252331, 252340, B01D 1704, C10G 100

Patent

active

043211470

ABSTRACT:
A process for recovering bitumen from oil-in-water (O/W) emulsions is disclosed wherein water soluble demulsifiers are used. These demulsifiers are polyols of 4 and greater functionality containing discrete blocks of ethylene oxide and propylene oxide wherein the ethylene oxide content of the polyol is greater than about 50% but less than about 95%. The molecular weight of these polyols is greater than about 12,000. To resolve the bituminous petroleum emulsions, the process is carried out between 25.degree. and 120.degree. C. wherein the demulsifier of the invention is contacted with the bituminous emulsion.

REFERENCES:
patent: 2964478 (1960-12-01), Monson
patent: 3330757 (1967-07-01), Bichard
patent: 3331765 (1967-07-01), Canevari et al.
patent: 4098692 (1978-07-01), Baker et al.

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