Fractionation process, control system and apparatus

Details Fractionation process, control system and apparatus Fractionation process, control system and apparatus

1978-01-12

1979-09-11

Levine, Herbert

Mineral oils: processes and products

Fractionation

Distillation

196132, 196133, 202160, 202163, 203 2, 203 71, 208358, B01D 342, B01D 300, C10G 700

Patent

active

041674758

ABSTRACT:
A process, apparatus and control system for the fractionation of a hydrocarbon feed stream containing relatively nonvolatile impurities. A sidecut liquid stream which is substantially free of the impurities is withdrawn below the feed point. The liquid derived from the feed stream is confined to a first lateral half of the fractionation column to prevent the transfer of the nonvolatile impurities to the second lateral half from which the sidecut is removed. Liquid descending from above the feed point is collected and distributed between the two lateral halves of the column in response to temperature measurements taken in the two halves to thereby equalize liquid flow rates in the two halves. The flow of vapor between the two halves is not obstructed.

REFERENCES:
patent: 2022809 (1935-12-01), Kramer
patent: 2323047 (1943-06-01), Jewell
patent: 2467951 (1949-04-01), Whitley
patent: 3412016 (1968-11-01), Graven
patent: 3475287 (1969-10-01), DeGraff

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