Feasible Ranges of Product Rates and Reflux Ratios

2 Feasible Ranges of Product Rates and Reflux Ratios 

If the overhead and bottoms compositions (Tp and Xg) are specified, the product rates are determined by material balance. The specified separation also determines the reflux ratio. (The number of stages and feed location are assumed fixed.) 

The relatively small operable range of composition specifications results from the lesser degree of independence between Yp, and Xg. The higher the dependence between the specified variables, the smaller the operable range. Examined on a Y-X equilibrium diagram, the dependence between Yp, and Xg is underscored by the 

4 FEAsiBtE Ranges oe Distieeate Composition and Reelux Ratio 

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