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Chemical Engineering Q: Why as you increase the power and hence the boil up rate of...

Chemical Engineering Q: Why as you increase the power and hence the boil up rate of a distillation column does the efficiency of the column increase? Additionally, why is there a significant difference in efficiency between a laboratory scale column and an industrial scale column?

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Answer #1

As the pwoer increases, the boil up rate increases. This leads to vaporization of more of less volatile component, hence enrichment of top volatile product in the top of the column. The purity of the more volatile component will be more in the distillate,

Volume is proportional to d3. The difference between laboratory scale and industrial scale is diameter. As more volume need to be handled in the industrial column and as the dimater gets cubed. This adds to reduction in efficiency in the industrial column.

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