General Description

The Computer Controlled Disc Centrifuge, "QCDIC", allows the study of the separation of emulsions by centrifugation.

In order to make the unit work, two immiscible liquids are poured into the agitation tank, such as water and oil. In this deposit a computer controlled agitation mechanism mixes the two substances. This mechanism has three interchangeable stirring rods: two flat rods and a three blade rod. The values of speed and torque of the agitator are recorded.

Once the emulsion has been generated, a computer controlled pump drives it from the agitation tank to a rotating disc centrifuge, which power is computer controlled.

The emulsion enters the centrifuge at the top and through its distributor reaches the bottom. The mixture is driven to the outside due to the centrifugal force, but the denser particles are pushed farther (to the walls) than the light particles. Once separated, the two liquids that made up the mixture reach the top of the centrifuge and each one comes out through a different channel. The final liquids can be collected in tanks or returned to the agitation tank.

Exercises and guided practices


  1. Study of the centrifugation process in disc centrifuges.
  2. Tune-up operations and control of a disc centrifuge.
  3. Observation of the influence of different stirrers in the produced emulsion.
  4. Tune-up of the unit with different initial proportions for the production of the emulsion.
  5. Study the influence of the initial flow in the separation result.
  6. Variation of the final separation depending on the stirrer mechanisms speed.
  7. Study of the concentration of the mix depending on the stirring time (requires photometer).
  8. Maintenance and cleaning functions.
  9. 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 allows 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 QCDIC unit process through the control interface box without the computer.
  8. Visualization of all the sensors values used in the QCDIC 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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