Distillation process

Details Distillation process Distillation process

1985-06-25

1987-05-05

Bashore, S. Leon

Distillation: processes, separatory

And returning product of distillation step to distillation zone

203 99, 203DIG18, 203DIG19, 202156, 202172, 208355, B01D 314

Patent

active

046629955

ABSTRACT:
A method and apparatus for improving the separation of a distillation system comprising a main distillation zone and at least one sidestream separation zone is described. The method comprises returning vapor separated in the sidestream separation zone to the main distillation zone at a location at least two trays and/or at least one theoretical stage above the liquid draw-off from the main distillation zone to the sidestream separation zone.

REFERENCES:
patent: 1952639 (1934-03-01), Thiele
patent: 2175817 (1939-10-01), Slawson
patent: 2222583 (1940-11-01), Kraft
patent: 2736688 (1956-02-01), Kraft
patent: 3210271 (1965-10-01), Byerly et al.
patent: 3301778 (1967-01-01), Cabbage
patent: 3310487 (1967-03-01), Johnson et al.
patent: 4239618 (1980-12-01), Peiser et al.
patent: 4274944 (1981-06-01), Bannon
Dickey et al, "Figure Separations This New Way", Hydrocarbon Processing & Petroleum Refiner, Feb. 1962, vol. 41, No. 2, pp. 143-150.

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