SDCC Unité de Séchage et de Refroidissement par Pulvérisation, Contrôlée par Ordinateur (PC)

11.1.7.- SÉCHAGE ET REFROIDISSEMENT 12.1.- TECHNOLOGIE ALIMENTAIRE
COMPUTER CONTROLLED SPRAY DRYER AND CHILLER UNIT - SDCC

SYSTEMES INNOVANTS

The Computer Controller Spray Dryer and Chiller Unit, SDCC, consists of two systems with independent inlet and outlet computer controlled speed fans.

Voir description générale

Expansions

ICAI

Logiciel Interactif pour l'Enseignement assisté par Ordinateur
FSS

Système de Simulation de Défauts
PLC

Contrôle des Processus Industriels par PLC
ELK

Kit de Développement Logiciel EDIBON, Optimisé par NI LabVIEW™
ESN

EDIBON Scada-Net
ECL

EDIBON Cloud Learning

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Description Générale

The Computer Controller Spray Dryer and Chiller Unit, SDCC, consists of two systems with independent inlet and outlet computer controlled speed fans.

For the spray drying, a computer controlled speed pump impels the liquid to be dried to the top of the drying tower, where it is sprayed by a nozzle, thus entering the tower dispersed in fine drops. The compressed air enters the tower, being directed to the liquid that leaves from the nozzle, which is immediately sprayed. The nozzle can work with two fluids, allowing the operation with thick products and solids in suspension.

A hot air current is introduced in the tower, causing the sudden evaporation of the surface moisture of the particles. The flow of air is supplied by a computer controlled fan and heated by a computer controlled heating element (PC).

There is another computer controlled fan at the outlet that takes in the air from the tower through a cyclone separator, enabling to work with variable pressures and residence times. There is a bag filter at the air outlet to obtain a clean outlet air without product powder.

When products containing fats are dried, there is a fluidized bed cooler to cool down the spray dried powders. The fluidized bed helps to crystallize the fat content.

In case of spray chilling, the air flow from the inlet fan to the spray tower is cooled instead of heated. A heat exchanger that uses water chilled in its own chilling unit as working fluid is employed for this chilling.

The unit includes valves and accessories for a quick change between spray drying and chilling. Besides, the position of the nozzles can also be changed and the working mode can be selected between co-current and counter-current.

Different sensors allow for measuring the most important variables of the process: temperatures, pressures, flow and relative humidity.

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.

Des exercices et pratiques guidées

EXERCICES GUIDÉS INCLUS DANS LE MANUEL

  1. Operating principle of a spray dryer.
  2. Effect of the drop size in the drying process.
  3. Effect of the air inlet temperature in the drying process.
  4. Effect of the product supply flow in the drying process.
  5. Mass balance of a spray dryer.
  6. Efficiency of the spray dryer.
  7. Sensors calibration.

PLUS D'EXERCICES PRATIQUES À EFFECTUER AVEC CETTE ÉQUIPEMENT

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

Qualité

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