• Determining of the number of transfer units
  • Determining the height of a transfer unit
  • Calculation of extraction efficiency
  • Measurement and mass balances
  • Calculation of mass transfer coefficient
  • Calculation of the number of theoretical stages
  • Trend of concentrations along the column
  • Determination of mass transfer coefficient
  • Determining the number of theoretical stages
  • Trend of concentrations along the column
  • Exercising on systems with numerous (partially mixable) components.


  • Recovery of the solvent used in the extraction
  • Study of the variation of the reflux ratio, feeding flowrate, reboiler heating power, and feeding composition on the distillation of different mixtures (water / ethanol, water / methanol, methanol / propanol, etc…)
  • Concept of flooding in the column


  • Frame made of stainless steel
  • Process flow diagram in front of panel
  • Graduated tanks
  • Extraction column of borosilicate glass, which includes stirrer with disc.
  • Top and bottom separators
  • variable speed motor and with speed sensor.
  • Metering pump of rust free material
  • Distillation column of borosilicate glass with vacuum jacket
  • Reflux head of borosilicate glass
  • Solenoid valve for controlling the reflux ratio
  • Reboiler of rust free material for the distillation column
  • Electric heater of rust free material, P = 1500 W
  • Thyristor unit for controlling the electric heater
  • 2 timers for controlling the reflux ratio
  • Over head condenser of borosilicate glass with exchange surface of 0.1 m2
  • Flowmeter for the water feeding the head condenser, with range of 25 to 250 l/h
  • Thermocouple with sheath along with electronic temperature indicator
  • Hopper for storing the solid
  • Variable speed Motor for solid feeding & extractor
  • Programmable timers for controlling the starting and stopping of the feed
  • Tank for storing the solvent
  • Tank for storing the extracted phase
  • Tank for storing the exhausted solid
  • Thermocouple with sheath along with electronic temperature indicator
  • Thyristor for controlling the heater power
  • Electric heater for pre heating of solvent, Power = 400W
  • Metering pump of rust free material for the solvent,
  • Piping and valves of stainless steel
  • Safety devices and control for protection of system
  • Emergency push button
  • Autonomous pilot unit with computerized control software
  • UPS with significant backup to shut down the plant in the event of a power outage
  • Computer system for the Acquisition of data from plant
  • Data acquisition via USB under Window
  • Spares will be supplied for smooth operation for the period of 1 year.
  • The unit will be provided with all required accessories for smooth running, gases with cylinders (where required), calibration kits (if required), installation & after-sale services, maintenance services and operational manuals.

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

The Liquid/Liquid extraction unit demonstrates the separation of two liquid mixtures to be separated. The liquid mixture to be separated is delivered from the feed tank into the bottom of the extraction column using a pump. There, it moves in counter flow towards the solvent, which is delivered into the top of the extraction column by a pump. The mixture to be separated is made up of a transition component and carrier liquid. The carrier liquid and the solvent are insoluble in one another and therefore a phase boundary is established in the column.

Distillation is used to separate liquid mixtures made up of individual liquids that are soluble in one another. Ethanol/water is recommended as the liquid mixture our distillation column apparatus. It is fed into the column. It partially evaporates on its way to the bottom of the column where it is heated to boiling. The mixed vapor produced then moves upwards in the column. The mixed vapor contains a higher concentration of the component with the lower boiling point (ethanol). It leaves the top of the column and is condensed using a condenser.

Technical Data

Extraction Column

  • Size: DN50
  • Material: Borosilicate Glass
  • Height: 1000mm
  • Stages: 20
  • Stirrer material: Stainless Steel
  • Stirrer speed: 0~1000 rpm

 Distillation Column

  • Internal diameter: 50mm
  • Height: 700mm

 Vacuum pump

  • Final vacuum: approx. 500mbar

 Graduated Tanks

  • Material: Plastic
  • Capacity: 10L
  • Quantity: 2

 Metering Pump

  • Flowrate: 0~60l/H


  • Capacity: 3L
  • Feed rate: 20l/h
  • Motor: Geared
  • Speed: 0~30rpm
  • Material: Stainless Steel


  • Material: Plastic
  • Capacity: 10L
  • Quantity: 3

 Metering Pump

  • Flowrate: 0~60l/H

Measuring ranges

  • Temperature: -100oC~400oC
  • Flowrate: 0~100L/h
  • Conductivity: 0~1990μS/cm
  • Pressure: -1~1bar

Software CT-3313SW

DAQ software specially designed in National Instrument™, LABVIEW™ environment to measure and calculate the results of apparatus. The software is optional and while using software a set of electronic sensors are included. Software can be run with any Windows™ environment.