• Study of the main principles of the absorption of a gas into a liquid through a packed column
  • Demonstration of quantitative methods of analysis of gaseous and liquid phase
  • Mass balance for an absorption column
  • Determination of mass transfer coefficient
  • Study of hydrodynamic characteristics of a packed column
  • Determination of flooding and loading points
  • Determination of pressure losses in the column
  • Representation of the absorption process in an operating diagram
  • Investigation of the variables influencing the effectiveness of absorption


  • Frame made of stainless steel
  • Process flow diagram in front of panel
  • Absorption column of Plexiglas
  • Feeding tank.
  • Centrifugal feeding pump
  • Air Compressor
  • Flowmeter for water.
  • Flowmeter for CO2.
  • Flowmeter for air.
  • 2 differential U-tube Manometers.
  • Apparatus for analyzing of gas
  • Control valves
  • Safety devices for protection of system
  • Emergency push button
  • 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.

Absorption is used to remove one or more gaseous components from a gas flow using a solvent. First of all, a CO2 and air gas mixture is produced. It is possible to adjust the mixing ratio using valves. The flow rates of the gas components are displayed.

A compressor delivers the gas mixture into the lower section of the absorption column. In the column, part of the CO2 is separated in the counter flow with the solvent. Water is used as the solvent. The CO2 is absorbed by the downward flowing water.

The two-section column is equipped with connections to determine the pressure losses. The pressure loss in the respective sections can be displayed via 2 U-tube manometers. To evaluate the success of the process, the trainer includes outlets for taking gas and liquid samples. The gas samples can be analyzed

The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

Technical Data

Absorption column

  • Height: 2x 750mm,
  • Internal diameter: Approx. 80mm
  • Material: Plexiglas


  • Raschig rings
  • Size: Dia. 10mm
  • Length: 10mm
  • Material: Borosilicate Glass

 Feed Tank

  • Capacity: 30L
  • Material: Plexiglas

 Feed pump

  • Max. flow rate: 10L/min
  • Max. head: 10m


  • Max. positive pressure: 1bar
  • Max. flow rate: 5m³/h

Flow rates:

  • air: Approx. 0.4~40 l/m
  • Solvent: 40~430L/h
  • CO2: 0.5~6L/min

 Measuring ranges

  • Temperature:-100~400°C
  • Differential pressure: 2x 0~500mmWC