General Description

The main element of the "FPCC" unit is a transparent packed column, which can be used with water, air or both fluids, simulating an absorption column.

When working with water, the unit includes a computer controlled speed pump to impel the water from the storage tank to the upper side of the column (or lower side of the column if valves are arranged), passing through a flow sensor.

The air circuit includes a compressor that impels air to the lower side of the column for a countercurrent or parallel operation with water. The air flow is measured with a flowmeter.

The packing material in the column can be exchanged to study the influence of different types of contact.

There are pressure sensors at the upper, middle and lower part of the column to determine pressure drops in the fixed bed and two "J" type temperature sensors to measure the air and water temperatures.

This Computer Controlled Unit is supplied with the EDIBON Computer Control System (SCADA), and includes: The unit itself + a Control Interface Box + a Data Acquisition Board + Computer Control, Data Acquisition and Data Management Software Packages, for controlling the process and all parameters involved in the process.

Exercises and guided practices


  1. Study of a packed column operation.
  2. Analysis of a packed column operation working with countercurrent water-air.
  3. Analysis of a packed column operation working with water-air in parallel.
  4. Analysis of a packed column operation working with water-water.
  5. Study of the wall effect.
  6. Study of pressure drops.
  7. Study and determination of the flooding point in the packed column.
  8. Study and determination of the loading point in the packed column.
  9. Representation of the holdup diagram.
  10. Representation of the pressure drop diagrams.
  11. Sensors calibration.


  1. Many students view results simultaneously. To view all results in real time in the classroom by means of a projector or an electronic whiteboard.
  2. Open Control, Multicontrol and Real Time Control. This unit allows intrinsically and/or extrinsically to change the span, gains, proportional, integral, derivative parameters, etc, in real time.
  3. The Computer Control System with SCADA and PID Control allow a real industrial simulation.
  4. This unit is totally safe as uses mechanical, electrical and electronic, and software safety devices.
  5. This unit can be used for doing applied research.
  6. This unit can be used for giving training courses to Industries even to other Technical Education Institutions.
  7. Control of the FPCC unit process through the control interface box without the computer.
  8. Visualization of all the sensors values used in the FPCC unit process.
  9. By using PLC-PI additional 19 more exercises can be done.
  10. Several other exercises can be done and designed by the user.



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