This last column can be used to recover the solvent used for the extraction, or separately for the study of distillation process. This plant consists of a liquid-liquid extraction column of glass with rotating discs installed aside a distillation column.

TRAINING PROGRAM

Distillation:

Recovery of the solvent used in the extraction

Distillation of different mixtures (water / ethanol, water /methanol, methanol / propanol, etc...) versus the variation

of the following operational parameters:

Automatic flow control by PID controller

Reboiler heating power

Feeding composition

Reflux ratio

Feeding flow rate

Flooding.

Extraction:

Determination of the number of transfer units

Mass balance

Height of a transfer unit

Extraction efficiency

Calculation of the number of theoretical stages

Calculation of mass transfer coefficient

Trend of concentrations along the column

Exercises on systems of 3 partially mixable components:

Acetic acid – ethyl acetate – water

Acetic acid – isopropyl ether – water

Acetic acid – toluene – water

Automatic control with PID controller.