Chapter 4
Binary Column Distillation: Internal Stage-by-Stage Balances
4.0 Summary—Objectives
In this long chapter, we develop the stage-by-stage balances for continuous, steady-state distillation columns and show how to solve these equations when molar flow rates in each section of the column are constant (called constant molal overflow [CMO]). When finished studying this chapter, you should be able to satisfy the following objectives:
Write mass and energy balances and equilibrium expressions for any stage in a continuous, steady-state distillation column
Explain what CMO is, and determine if CMO is valid in a given situation
Derive the operating equations for CMO systems
Calculate the feed quality and determine its effect on flow rates. ...
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