For a batch rectifier with appreciable column holdup, why do tray compositions change less rapidly than they do for a rectifier with negligible column holdup, and why is the separation improved?
For a batch rectifier with appreciable column holdup, why do tray compositions change less rapidly than they do for a rectifier with negligible column holdup, and why is the separation improved?
It is to be mentioned why there is a less rapid change in the composition of the tray for a batch rectifier with hold up as compared to without holdup.
The reason for the improvement in the separation is to be stated.
The effects of the liquid-holdup on the batch rectification are:-
1. The products obtained after the rectification process may differ in quality due to liquid-holdups.
2. The amount of energy required to carry out the process may be somewhat larger than expected.
3. Several complex methods may be utilized to reach the final value of the desired products.
4. There is a fall in the degree up to which the components can be separated due to this.
5. The composition of the residue in the liquid phase is decreased due to the presence of the liquid hold-up.
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