Distillation: processes – separatory – With measuring – testing or inspecting
Patent
1983-08-31
1985-10-01
Bascomb, Wilbur
Distillation: processes, separatory
With measuring, testing or inspecting
203 2, 203 3, 62 21, 62 37, 202160, 202206, 364501, B01D 342
Patent
active
045444528
ABSTRACT:
In a fractional distillation process in which it is desired to maintain a desired overhead product composition and bottoms product composition, a set point for the flow rate of the external reflux to the fractional distillation column is increased or decreased by an incremental amount or is left constant based on whether the concentration by the heavy key component in the overhead product stream and the concentration of the light key component in the bottoms product stream are above a high limit, below a low limit, between the high limit and low limit or some combination thereof and also based on the relationship between a set point for the flow rate of the external reflux and a high limit for the flow rate of the external reflux. At the same time, a temperature set point for the fractional distillation column is increased or decreased by an incremental amount or is left constant depending on the same factors. Use of these set points for process control provides control of the overhead product composition and bottoms product composition without the use of analysis controllers.
REFERENCES:
patent: 3018230 (1962-01-01), Morgan
patent: 3156628 (1964-11-01), Larrison
patent: 3259554 (1966-07-01), Constantikes
patent: 3361646 (1968-01-01), MacMullan et al.
patent: 3477916 (1969-11-01), McNeill et al.
patent: 4316255 (1982-02-01), Jensen
patent: 4371426 (1983-02-01), DiBiano et al.
patent: 4400239 (1983-08-01), Hobbs
patent: 4473443 (1984-09-01), Hobbs
Halliday Mary M.
Jackson Glen R.
Bascomb Wilbur
Phillips Petroleum Company
LandOfFree
Control of a fractional distillation process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control of a fractional distillation process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control of a fractional distillation process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1440518