Control of a fractional distillation process

Details Control of a fractional distillation process Control of a fractional distillation process

1985-08-01

1986-03-25

Bascomb, Wilbur

Distillation: processes, separatory

With measuring, testing or inspecting

203 2, 202160, B01D 342

Patent

active

045781524

ABSTRACT:
A measurement of the pressure in a fractional distillation column is utilized to bias the desired external reflux flow rate which is determined by some conventional method. The bias is applied only when a pressure limitation is exceeded and the external reflux flow rate is reduced as a result of the bias which results in a reduction of column pressure.

REFERENCES:
patent: 2816858 (1957-12-01), Walker
patent: 3282799 (1966-11-01), MacMullan
patent: 3332856 (1967-07-01), Hart
patent: 3342698 (1967-09-01), Rijnsdorp
patent: 3361646 (1968-01-01), MacMullan
patent: 4167455 (1979-09-01), Bard
patent: 4182657 (1980-01-01), Swindell
patent: 4377443 (1983-03-01), Tuck et al.
patent: 4392877 (1983-07-01), Funk
patent: 4400239 (1983-08-01), Hobbs
Liptak, B. G., Instrument Engs. Handbook, vol. 2, pp. 1322-1328.

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