Method of solvent recovery in autorefrigerant/ketone dewaxing pr

Details Method of solvent recovery in autorefrigerant/ketone dewaxing pr Method of solvent recovery in autorefrigerant/ketone dewaxing pr

1975-10-31

1977-10-04

Levine, Herbert

Mineral oils: processes and products

Paraffin wax; treatment or recovery

Separation of paraffin from oil

208 35, C10G 4308

Patent

active

040522946

ABSTRACT:
Autorefrigerative and ketone solvents are separated and recovered from dewaxed oil and wax through the use of high and low pressure flashes followed by steam stripping. Water buildup in the recovered solvent is prevented by the use of a decanter and deketonizer wherein the overheads from the strippers are sent directly to the deketonizer and the overhead therefrom sent to the decanter, thereby substantially reducing the size of the deketonizer required. Water is removed from the recovered solvent in the deketonizer and may be sent to sewerage.

REFERENCES:
patent: 2202542 (1940-05-01), Voorhees
patent: 2886610 (1959-05-01), Georgian
patent: 2907709 (1959-10-01), Benedict
patent: 3470088 (1969-09-01), Vickers
patent: 3622496 (1971-11-01), Biribauer et al.

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