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Topic: VLE calculation. Help pls!  (Read 2756 times)

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Offline tomaxx87

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VLE calculation. Help pls!
« on: November 12, 2013, 08:01:20 AM »
Hi!

I was given this mandatory assignment:

A saturated liquid mixture consisting of 50 mole% 2-propanol (1) and 50 mol% 1-propanol
(2) to be separated by distillation into a distillate having a purity of 99.9 mole% of the light
component and a bottoms product having a purity of 99.9% by mole of the heavy component.
Distillation is peforemed at a total pressure of 1 bar.

From laboratory data the Wilson constants a12 & a21 has been determined.

From theese data construct a T,xy diagram and a x,y diagram for the mixture at 1bar.


I'm just stuck guys. Can anyone pls point me in the right direction on how to getting started.

BR. Thomas

Offline curiouscat

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Re: VLE calculation. Help pls!
« Reply #1 on: November 12, 2013, 08:46:59 AM »
Write the Wilson equation.

Write a general VLE eq.

Then we can help.

Offline tomaxx87

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Re: VLE calculation. Help pls!
« Reply #2 on: November 12, 2013, 09:17:04 AM »
The wilson equation is as follows: See attachment


as u can see the parameters are temperature dependent

v1 & v2 are the molar volumnes which i have aswell.

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