Question: Process dynamics and control book (b) Suggest a feedforward control method and sketch the schematic diagram. 1.6 The distillation column shown in the drawing is

Process dynamics and control book

(b) Suggest a feedforward control method and sketch the schematic diagram. 1.6 The distillation column shown in the drawing is used to distill a binary mixture. Symbols x, y, and z denote mole frac- tions of the more volatile component, while B, D, R. and F represent molar flow rates. It is desired to control distillate composition y despite disturbances in feed flow rate F. All flow rates can be measured and manipulated with the excep- tion of F, which can only be measured. A composition ana- lyzer provides measurements of y. (a) Propose a feedback control method and sketch the schematic diagram. R D.y a F.z DODEZ VB

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