Electrical coalescense of liquid emulsions

Details Electrical coalescense of liquid emulsions Electrical coalescense of liquid emulsions

1981-07-27

1983-12-06

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204290R, B03C 500, C25B 1100

Patent

active

044192002

ABSTRACT:
An improved process for electrically coalescing water-in-oil emulsions in an AC electrical field, wherein the improvement comprises using insulated electrodes having a dielectric constant which is at least about 3 and having a hydrophobic surface in contact with the emulsion. This invention results in faster coalescense of the emulsion than can be obtained with insulated electrodes having a lower dielectric constant, even if the electrode-emulsion interface is hydrophobic. Formation of spongy emulsion and decomposition of the oil phase under the high voltages required for rapid coalescense is minimized and even eliminated.

REFERENCES:
patent: 2364118 (1944-12-01), Wolfe
patent: 3412003 (1968-11-01), Tokumoto
patent: 3839176 (1974-10-01), McCoy et al.
patent: 3891528 (1975-06-01), Griswold
patent: 4073712 (1978-02-01), Means et al.
patent: 4283290 (1981-08-01), Davies

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