How does the ponchon Savarit method differ with McCabe Thiele method?

How does the ponchon Savarit method differ with McCabe Thiele method?

For multistage tray towers Ponchon Savarit method was first developed for the case of negligible heat losses. The use of the method is illustrated in the case studies. The method is rigorous and time consuming. The McCabe Thiele method is less rigorous as it doesn’t enthalpy data.

What is ponchon Savarit method?

The Ponchon{Savarit diagram (Ponchon 1921; Savarit 1922) for binary distillation allows one to account for enthalpy effects that cause a varying molar overflow when stepping off stages graphically. It is a diagram that plots vapour and liquid enthalpy curves versus composition.

Which method uses McCabe Thiele diagram?

A McCabe-Thiele plot is a simplified tool to assist in understanding distillation. It is a method for calculating the number of theoretical trays required for the distillation of a binary mixture.

What is the main disadvantage of the McCabe-Thiele method?

One of the main disadvantages of the McCabe-Thiele Method is that it is not very useful for analyzing the distillation of mixtures containing more than 2 components. However, the method is still useful as a teaching tool and a conceptual tool.

What is the main assumption in Ponchan Savarit method?

This approach is sometimes called the Ponchon-Savarit Method. Working on the Hx diagram is more general than a McCabe-Thiele construction, because it takes direct account of the thermal effects and does not require an assumption of equimolal overflow.

When can McCabe-Thiele method not be used?

When can McCabe Thiele method not be used?

Is McCabe-Thiele accurate?

Then, part 2 of this exercise, consists in determining the ratio of rectifying to stripping stages regarding the same mixture and operational conditions, using the Fenske equation, the Kirkbridge equa- tion and the McCabe and Thiele method. In this particular example, the McCabe and Thiele method is the most accurate.