Single and Multiple Equilibrium Contact Stages

In many operations of the chemical and other process industries, the transfer of mass from one phase to another occurs, usually accompanied by a separation of the components of the mixture, since one component will be transferred to a larger extent than will 

A single equilibrium stage can be represented as in Fig. 10.3-1. The two entering phases, Lq and Kj, of known amounts and compositions, enter the stage, mixing and equilibration occur, and the two exit streams L, and K, leave in equilibrium with each other. Making a total mass balance. 

Assuming that three components. A, B, and C, are present in the streams and making a balance on A and C, 

To solve the three equations, the equilibrium relations between the components must be known. In Section 10.3B, this will be done for a gas-liquid system and in Chapter 11 for a vapor-liquid system. Note that Eqs. (10.3-l)-(10.3-3) can also be written using mole units, with L and V having units of moles and x and units of mole fraction. 

3B Single-Stage Equilibrium Contact for Gas-Liquid System 

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