Mineral oils: processes and products – Paraffin wax; treatment or recovery – Separation of paraffin from oil
Patent
1977-07-05
1978-09-19
Levine, Herbert
Mineral oils: processes and products
Paraffin wax; treatment or recovery
Separation of paraffin from oil
208 37, C10G 4308
Patent
active
041152425
ABSTRACT:
A process wherein a light waxy petroleum distillate stock, having a viscosity less than about 200 SUS at 100.degree. F, is heated for melting any wax therein, wherein said heated waxy stock is incrementally mixed with a flowing stream of dewaxing solvent, having a temperature in the range of 40.degree.-80.degree. F, for forming an oil/solvent mixture at a temperature 5.degree.-10.degree. F below the depressed cloud point, and wherein the oil/solvent mixture is cooled at a uniform rate in the range of 1.degree.-8.degree. F/min. to a separation temperature in the range of +25.degree. to -40.degree. F for precipitating wax from said mixture.
REFERENCES:
patent: 2410483 (1946-11-01), Dons et al.
patent: 3350297 (1967-10-01), Torobin
patent: 3764517 (1973-10-01), Bodemuller
patent: 3850740 (1974-11-01), Gudelis et al.
Chen et al., "Chemical Engineering", Mar. 19, 1977, pp. 105 to 111.
Harrison Charles W.
Pitman Herbert J.
Quasny Jerry E.
Sequeira Avilino
Levine Herbert
May, Jr. Douglas H.
Ries Carl G.
Texaco Inc.
Whaley Thomas H.
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