Dehydrating process for ketone dewaxing solvents

Details Dehydrating process for ketone dewaxing solvents Dehydrating process for ketone dewaxing solvents

1976-12-20

1978-05-09

Levine, Herbert

Mineral oils: processes and products

Paraffin wax; treatment or recovery

Separation of paraffin from oil

208 31, C10G 4314

Patent

active

040885640

ABSTRACT:
Ketone dewaxing solvent is separated and recovered from dewaxed oil and a wax slurry through the use of flash vaporization or distillation followed by steam stripping. Water is removed from the recovered solvent through the use of a combination of a decanting drum to form a solvent phase and a water phase, a deketonizer tower which strips solvent from the water phase, and a simple distillation tower which functions as a solvent dehydrator. It has been found that feeding a portion of the overhead vapors from the flash vaporization step directly to the bottom of the dehydrator provides enough heat to eliminate the need for a reboiler on the dehydrator tower.

REFERENCES:
patent: 2443532 (1948-06-01), Berg
patent: 2734849 (1956-02-01), Gross et al.
patent: 2738306 (1956-03-01), Pratt et al.
patent: 2907709 (1959-10-01), Benedict
patent: 3105809 (1963-10-01), Butler et al.

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