Separation Process Engineering, 5th Edition

Chapter 8

Introduction to Complex Distillation Methods

We have looked at binary and multicomponent mixtures in both simple and fairly complex columns. However, the chemicals separated have usually had fairly simple equilibrium behavior. Simple distillation columns are not able to completely separate mixtures when azeotropes occur, and the columns are expensive when relative volatility is close to 1. In this chapter, we introduce a variety of more complex distillation systems used for separation of less ideal mixtures.

8.0 Summary—Objectives

In this chapter, we look at azeotropic and extractive distillation systems plus distillation with simultaneous chemical reaction. By the end of this chapter, you should be able to satisfy the following objectives: ...