Vapour-Liquid and Gas-Liquid Processes

Question 1

What are the McCabe-Thiele assumptions?

Answer 1

1. The latent heats of the column components are equal and constant.
2. The component enthalpy changes and heats of mixing are negligible compared to latent heats.
3. Well-insulated column so negligible heat loss.
4. No pressure drop within the column.

Question 2

What happens when the slope of the equilibrium line decreases?

Answer 2

1. Increase in distance between the operating line and the equilibrium line.
2. Outlet gas and liquid composition will increase.
3. Amount of substance A transferred will increase and the outlet molar fraction of substance A will decrease.