Fractional distillation column control

Details Fractional distillation column control Fractional distillation column control

1982-10-26

1985-03-19

Wise, Edward J.

Boots, shoes, and leggings

196132, 203DIG18, 203 2, 202160, B01D 342

Patent

active

045063346

ABSTRACT:
In a fractional distillation process in which a pump around stream is utilized to control heat removal from an upper portion of the fractional distillation column and in which the pump around stream is utilized to preheat the feed stream flowing to the fractional distillation column, control signals derived from an analysis of the overhead product stream from the fractional distillation column are utilized to substantially maximize the flow rate of the pump around stream. This results in a maximum preheating of the feed stream flowing to the fractional distillation column which improves the energy efficiency of the fractional distillation process. Also, a desired overhead product specification is maintained.

REFERENCES:
patent: 3377548 (1968-04-01), Newbold
patent: 3392088 (1968-07-01), Johnson
patent: 3446710 (1969-05-01), Sissons, Jr. et al.
patent: 3676066 (1972-07-01), Pennington
patent: 4230534 (1980-10-01), Stewart
patent: 4295196 (1981-10-01), Furr
patent: 4371426 (1983-02-01), DiBiano et al.
patent: 4400239 (1983-08-01), Hobbs
patent: 4417311 (1983-11-01), Ryan

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