Comparative Analysis of Conventional and Extractive Distillation to separate a mixture | Lecture# 24

AspenTech channel has brought another exciting video, in which conventional and extractive distillation schemes are compared for the separation of Heptane-Toluene Mixture. The comparative analysis is conducted, based on condenser and reboiler duties. Please do watch, like, and share the video, and subscribe the channel.
Problem Statement:
Feed Conditions:
Vapor Fraction = 0.5,
Pressure = 1 bar,
Flowrate = 100 kgmole/h,
Equimolar Heptane-Toluene mixture
Conventional Distillation:
Number of Stages = 80,
Feed Stage = 69,
Top product in vapor form,
Condenser and reboiler pressure as 1 bar,
99 mole% Heptane in the top product,
99 mole% Toluene in the bottom product.
Solvent Conditions:
Temperature = 181 °C,
Pressure = 1 bar,
Flowrate = 60 kgmole/h,
Pure Phenol (100 mole%).
Extractive Distillation:
1st Column:
Number of Stages = 50,
Feed Stage = 37 for feed, and 4 for solvent,
99 mole% Heptane from the top product,
Solution from the bottom product,
Condenser and reboiler pressure as 1 bar.
2nd Column:
Number of Stages = 28,
Feed Stage = 21,
99 mole % toluene from the top product,
99.999 mole% phenol from the bottom product.
Recycle the solvent.
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[@faridlarkem8225]

you are doing a perfect job, hope all the best

[@aspenchemchannel]

Thank you Farid for appreciation.

[@harishr3343]

Completed lec 24

[@Sweetie64932]

Sir conventional technique hi non extractive distillation hota hai kya?

[@khushvendrapankaj8112]

dear sir, where did you find these data? could you share the resource from where you found these data?

[@sachinpanwar8086]

in the 2nd column, for phenol, if I specify 0.99 then it does not converge but it converges if I specify it as 0.99999 like you did. What if somebody does not know this level of inputs???

[@aspenchemchannel]

For 0.99, the specifications will change. That's why it may not be converging. You can check the absolute errors between the values and can analyze, that based on which parameter, this is occurring and can manipulate it.