PLC-QRCC Contrôle des Processus Industriels par PLC pour QRCC

SYSTEMES INNOVANTS

The Computer Controlled Catalytic Reactors, "QRCC", is an unit designed to perform the saccharose hydrolysis reaction in a continuous way by using catalytic fixed-bed reactors.

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Description Générale

The Computer Controlled Catalytic Reactors, "QRCC", is an unit designed to perform the saccharose hydrolysis reaction in a continuous way by using catalytic fixed-bed reactors.

Saccharose hydrolysis is the industrial process to obtain glucose and fructose from saccharose. It is a reversible chemical reaction.

The QRCC unit is composed of three fixed-bed reactors. Two of them are fixed-bed reactors for chemical catalysis with the same chemical catalyst, called ionic exchange resin but with different grain size. The third reactor is a fixed-bed reactor for biological (enzymic) catalysis with an immobilized enzyme. To start the hydrolysis process our product (saccharose) has to pass through this enzyme.

Saccharose hydrolysis is favoured with temperatures around 50 ºC – 60 ºC. For that end, the reactors have a jacket through which hot water will flow. The water temperature is controlled with the PID control through the control software.

Feeding saccharose to our reactors is done through a peristaltic pump which allows the regulation of speed through the control software.

The resulting solution is pumped to the final-product flask. From this point on it will be analysed with a spectrophotometer that is adapted to QRCC unit interface.

As an optional supply, there is the possibility of acquiring the additional recommended element Computer Controlled Flow Injection Analysis (FIA) Unit, "QRCC-IF". This unit is a Flow Injection Analysis system, which is used to measure the conversion degree of the reaction of the saccharose hydrolysis in a continuous way.

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. Study of the principles of catalytic fixed-bed reactors.
  2. Effect of the variation in the particle’s size in the effectiveness of a fixed-bed reactor.
  3. Comparison of chemical and biological (enzymic) catalysis.
  4. Checking the influence on different variables (feed flow, temperature of reaction, reagents concentration) on the obtained final product.
  5. Spectrophotometer calibration.
  6. Using the spectrophotometer and product analysis.
  7. Study of the "FIA" Flow Injection Analysis technique and principles (with QRCC-IF optional accessory).
  8. Examination of the reproducibility and sensitivity of the "FIA" analysis method as a function of the flow rate and sample concentration (with QRCC-IF optional accessory).
  9. Sensors calibration.

PLUS D'EXERCICES PRATIQUES À EFFECTUER AVEC CETTE ÉQUIPEMENT

  1. Studies of steady and unsteady state catalysis.
  2. Flow characterisation in a fixed-bed.
  3. Mass balances.
  4. Determination of steady state and unsteady state kinetics of a catalytic fixed-bed reactor.

Other possibilities to be done with this unit:

  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, derivate 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 QRCC unit process through the control interface box without the computer.
  8. Visualization of all the sensors values used in the QRCC unit process.
  9. Several other exercises can be done and designed by the user

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