Constraint control of a fractional distillation process

Details Constraint control of a fractional distillation process Constraint control of a fractional distillation process

1981-10-06

1983-07-12

Sever, Frank

Refrigeration

Processes

Circulating external gas

196132, 202160, 203DIG18, B01D 342

Patent

active

043928773

ABSTRACT:
In a fractional distillation process in which a compressor is used to supply heat to the fractional distillation process, a plurality of signals representative of a plurality of speeds of the compressor, required to prevent various process constraints from being violated or maintain various desired process operating conditions respectively, are compared. The signal representative of the highest compressor speed is utilized to control the compressor. In this manner, the compressor is run at the minimum speed required to satisfy the various process constraints and maintain the desired process operating conditions.

REFERENCES:
patent: 3225551 (1965-12-01), Kelly

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