Fractional distillation column control

Details Fractional distillation column control Fractional distillation column control

1980-07-02

1981-10-13

Sever, Frank

Boots, shoes, and leggings

196132, 202160, 202206, 203DIG18, E01D 342

Patent

active

042951968

ABSTRACT:
In a fractionation distillation process in which a pump around stream and an external reflux are 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, the flow rate of the pump around stream is manipulated so as to substantially maximize the flow rate of the pump around stream while maintaining a desired heat removal from the fractional distillation column. Priority control of the pump around stream and external reflux result in a maximum preheating of the feed stream flowing to the fractional distillation column which improves the energy efficiency of the fractional distillation process.

REFERENCES:
patent: 3392088 (1968-07-01), Johnson
patent: 3463725 (1969-08-01), MacFarlane et al.
patent: 4166770 (1979-09-01), Anderson et al.
patent: 4238212 (1980-12-01), Anderson

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