L19_Multicomponent - Material and Energy Balances...

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CAB1064 – Material and Energy Balances 1 Material and Energy Balances 10/12/11 Vapor-Liquid Equalibria for Multi-component Systems
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CAB1064 – Material and Energy Balances 2 Material and Energy Balances 10/12/11 Objectives At the end of this chapter, you should be able to understand the following : Use Raoult’s law & Hendry law to predict the partial pressure of a solute and a solvent Calculate the composition of multi-component systems at equilibria between the liquid and vapor phases Understand Partial Saturation & Humidity
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CAB1064 – Material and Energy Balances 3 Material and Energy Balances 10/12/11 Introduction If you have a multi-component mixtures says water & ethanol, at a steady state conditions there is a two-phase vapor-liquid mixture at equilibrium, a component in one phase is in equilibrium with the same component in the other phase. liquid vapor Constant Pressure Temperature S a t liq u id v p L - V Mole fraction of one component liquid vapor Constant Temperature Pressure li q i d Mole fraction of one component 0 1 0 1 A B C D
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CAB1064 – Material and Energy Balances 4 Material and Energy Balances 10/12/11 Introduction The equilibrium relationship depends on the temperature, pressure & composition of the mixture From the figure it is shown that the overall composition of the mixture changes, two phase exist, each having a different composition for the same component
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L19_Multicomponent - Material and Energy Balances...

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