Nonlinear Dynamic Model of Reactor and Column

We assume constant densities and constant reactor and jacket volumes. The dynamic model of the reactor and jacket consists of four nonlinear ordinary differential equations  

The dynamic model of the column consists of two ordinary differential equations per tray if equimolal overflow, constant tray holdup, and instantaneous liquid hydraulics are assumed. Molar flowrates and concentrations in mole fractions are used. The liquid holdup on each tray is 0.4 kmol  

Vapor-liquid phase equilibrium is assumed on each tray, so the vapor composition can be calculated from the known relative volatilities and liquid composition. The relative volatilities are aA = 3, aB = 1.5, and xq= l  

The liquid holdup in the base MP is 40 kmol and in the reflux drum, 40 kmol. Saturated liquid feed and reflux are assumed, so the liquid flowrate in the rectifying section is the reflux R and in the stripping section is R + F. 

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