Fractionating liquids

Details Fractionating liquids Fractionating liquids

1981-07-27

1983-07-19

Sever, Frank

Distillation: processes, separatory

With measuring, testing or inspecting

203DIG18, 208DIG1, B01D 342

Patent

active

043942199

ABSTRACT:
In fractionating tower apparatus including a plurality of modules including multi-stage segments, the improvement comprising the combination of a plurality of vaporizers for heating feed liquid to different temperatures to vaporize fractions of correspondingly different volatilities, means for feeding the vaporized fractions to different multi-stage segments of the tower, means for withdrawing liquid sidestreams from a plurality of the segments, temperature control means for limiting the level of heavy components in at least one selected liquid sidestream withdrawn from a segment below a module in which vapor is flashed, and means for separately feeding reflux liquid from at least one segment to a segment below it.

REFERENCES:
patent: 1735558 (1929-11-01), Youker
patent: 1771385 (1930-07-01), Subkow
patent: 1820573 (1931-08-01), Lyons
patent: 1893907 (1933-01-01), Primrose
patent: 1954839 (1934-04-01), Youker
patent: 2652129 (1953-09-01), Benedict
patent: 3749753 (1973-07-01), Skraba
patent: 4167475 (1979-09-01), Winter et al.

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