Chemical Engineering - Mass Transfer - Discussion
Discussion Forum : Mass Transfer - Section 5 (Q.No. 47)
47.
Solvent used in extractive distillation
Discussion:
9 comments Page 1 of 1.
Dhananjaysingh487 said:
1 decade ago
Wrong. A is right. Is of low volatility and found in bottom.
Arnab chowdhury said:
10 years ago
Wrong answer, C is right because, the ageotrope mixture driven out from bottom in this case.
PRINCE said:
8 years ago
In chemical engineering, azeotropic distillation usually refers to the specific technique of adding another component to generate a new, lower-boiling azeotropethat is heterogeneous (e.g. Producing two, immiscible liquid phases), such as the example below with the addition of benzene to water and ethanol.
Ashish patel said:
7 years ago
Yes, I agree @Dhananjaysingh.
As in extraction distillation the mixture has to be passed on the second column by bottom stream.
As in extraction distillation the mixture has to be passed on the second column by bottom stream.
Rahul said:
5 years ago
A is the right answer.
Nitesh ghidode said:
4 years ago
I think A is the right answer.
KRR said:
3 years ago
Distillation in the presence of a miscible, high-boiling, relatively non-volatile component, the solvent that forms no azeotrope with the other components in the mixture. The method is used for mixtures having a low value of relative volatility, nearing unity.
Arjun said:
2 years ago
D is the right answer. It only alters the relative volatility of the mixture. Not the original components.
Mr Pegu said:
1 year ago
A. The solvent used in extractive distillation is of low volatility.
In extractive distillation, the solvent should have a low volatility so that it does not vaporize along with the components being separated. This allows the solvent to selectively alter the relative volatilities of the components, improving the separation process without being lost in the overhead vapour.
In extractive distillation, the solvent should have a low volatility so that it does not vaporize along with the components being separated. This allows the solvent to selectively alter the relative volatilities of the components, improving the separation process without being lost in the overhead vapour.
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