Process and apparatus for reducing the energy required to separa

Details Process and apparatus for reducing the energy required to separa Process and apparatus for reducing the energy required to separa

1979-10-09

1981-05-05

Davis, Curtis R.

Mineral oils: processes and products

Fractionation

Distillation

196120, 202158, 202159, 203 22, B01D 300, C10G 700

Patent

active

042657369

ABSTRACT:
A method and apparatus are disclosed relating to the recovery and reuse of heat during fractionation of liquids in a tray-type fractionating tower. According to this method, a portion of the feed to the tower is directed through heat exchange tubing positioned on the trays in such a way that the tubing is in contact with liquid there present so as to bring about an indirect exchange of heat between the said liquid on the trays and the liquid in the tubing, at the same time that there is occurring the normal transfer of heat by direct contact between the vapor and the liquid on the trays and the normal interchange of material components by direct contact between vapor and liquid on the trays, the said heat exchange tubing being serially connected so as to carry liquid from tray to tray.

REFERENCES:
patent: 2183094 (1939-12-01), Fenske et al.
patent: 2883527 (1958-05-01), Kohl et al.
patent: 3249516 (1966-05-01), Mueller
patent: 3625016 (1971-12-01), Hoffman
patent: 3685967 (1972-08-01), Thayer

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