Fractional distillation column control

Details Fractional distillation column control Fractional distillation column control

1981-10-19

1983-01-04

Sever, Frank

Distillation: processes, separatory

With measuring, testing or inspecting

Of temperature or pressure

62 21, 203 3, 203DIG18, 208DIG1, 364501, B01D 342

Patent

active

043671217

ABSTRACT:
In a fractional distillation column, a desired ratio between the flow rate of a side draw product stream and the internal reflux flow rate at the particular tray from which a side draw stream is withdrawn from the fractional distillation column is maintained by manipulating the flow rate of the center reflux stream so as to maintain the desired ratio between the internal reflux flow rate and a side draw product stream flow rate at the particular tray from which the side draw stream is withdrawn from the fractional distillation column. Control of the ratio between the flow rate of a side draw product stream and the internal reflux flow rate results in an improved side draw product stream purity.

REFERENCES:
patent: 3463725 (1969-08-01), MacFarlane et al.
patent: 4096574 (1978-06-01), Christie

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