Evaporation and distillation - Multistage distillation - Column distillation

6 important questions on Evaporation and distillation - Multistage distillation - Column distillation

Where does the feed enter the distillation column?

At the equilibrium stage.

How is the section above the equilibrium stage namend?

The rectification section.

What is a downcomer?

A downcomer is where the liquid from one tray flows to the one below.
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How does the vapor flow upward through the trays?

Through holes in the sieve tray creating maximal contact between the vapor and liquid phase.

What happens with the overhead vapor at the top of the column?

It is condenced to a liquid distillate and than split into two streams. One is the overhead product (D) the other stream is refluxed (L0).

How is the reflux ratio defined?

As the ratio of the reflux rate to the rate of product removal.

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