Distillation control scheme design using steady-state models

7 Distillation control scheme design using steady-state models 

Steady-state simulation of distillation colunms has become routine. The use of these simulations has been restricted to use for heat and material balance and sizing purposes. 

Freuhauf and Mahoney [11,13,14] have shown that steady-state calculations [15] can be used to screen candidate control schemes, to provide a means for tray temperature location, and to calculate static gains. 

Steady-state models are easily manipulated and are robust. This allows for the efficient generation of a large number of case studies necessary for steady-state design procedures. The obvious disadvantage of this procedure is that nothing is known about the dynamic response, and hence the dynamic disturbance rejection capability of alternative control schemes is also not known. These need to be evaluated using a dynamic simulator. 

The basic steady-state design procedure consists of the following five steps  

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DISTILLATION CONTROL SCHEME DESIGN USING STEADY-STATE MODELS 203... 

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See also in sourсe #XX -- [ , , , ]

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