Transport Processes and Separation Process Principles, 5th Edition

Chapter 27. Liquid–Liquid Extraction

27.0 Chapter Objectives

On completion of this chapter, a student should be able to:

• List some reasons to choose liquid–liquid extraction over other separation techniques like distillation

• Distinguish between the raffinate and extract layers

• Calculate the amounts and compositions in both phases of a single-stage equilibrium extraction process using the lever-arm rule

• Calculate flooding velocities for packed towers using Figure 27.3-3

• Determine the size of multicompartment extraction columns

27.1 Introduction to Liquid–Liquid Extraction

27.1A Introduction to Extraction Processes

In order to separate one or more of the components in a mixture, the mixture is brought into contact with another phase. The ...