Computer Controlled Airlift Reactor

The Computer Controlled Airlift Reactor, allows to study the influence of the superficial gas velocity on the mixing time and superficial fluid velocity, the mass transfer coefficient and the gas content.

ATENG 10940 — Computer Controlled Airlift Reactor

(for main items)

• With this unit there are several options and possibilities:
• Main items: 1, 2, 3, 4, 5 and 6.
• Optional items: 7, 8, 9, 10 and 11.
• Let us describe first the main items (1 to 6):
• 1 ATENG 10940. Unit:
  Anodized aluminum frame with panels of painted steel.
  Main metallic elements made of stainless steel.
  Diagram in the front panel with similar distribution to the elements in the
  real unit.
• Airlift reactor:
  It is made of transparent material.
• Diameter of outer column (reactor column): 200 mm.
• Diameter of the riser column: 60 mm.
• Height: 2000 mm.
• PVC tank to store water:
• Tank capacity: 60 l approx.
• Supply centrifugal pump, computer controlled:
• Maximum flow supplied: 37 l/min.
• Maximum pressure: 2 bars.
  Air compressor, computer controlled, that provides a maximum flow of
  6 m³/h.
  Two pressure regulators situated in the air and nitrogen lines to reduce
  the pressure in the inlet reactor.
• Pressure sensor situated in the air line inlet, range: 0 – 5 bars.
  Flow sensor situated in the air line inlet.
• Four conductivity sensors, range: 0 – 200 mS/cm.
• Unit: ATENG 10940
• Three oxygen sensors to measure the oxygen concentration at several levels of the reactor, range: 0 – 10
  mg/L.
  Two 3-way directional valves to select the gas fed to the reactor.
• The complete unit includes as well:
  Advanced Real-Time SCADA.
  Open Control + Multicontrol + Real-Time Control.
  Specialized Control Software based on LabVIEW.
  National Instruments Data Acquisition board (250 KS/s, kilo samples per second).
  Calibration exercises, which are included, teach the user how to calibrate a sensor and the
  importance of checking the accuracy of the sensors before taking measurements.
  Projector and/or electronic whiteboard compatibility allows the unit to be explained and
  demonstrated to an entire class at one time.
  Capable of doing applied research, real industrial simulation, training courses, etc.
  Remote operation and control by the user and remote control for technical support,
  are always included.
  Totally safe, utilizing 4 safety systems (Mechanical, Electrical, Electronic & Software).
  Designed and manufactured under several quality standards.
  Optional ICAI software to create, edit and carry out practical exercises, tests, exams,
  calculations, etc. Apart from monitoring user's knowledge and progress reached.
  This unit has been designed for future expansion and integration. A common expansion is
  the Scada-Net (ESN) System which enables multiple students to simultaneously
  operate many units in a network.
  3

Complete Technical Specifications (for main items)

• QRALC/CIB. Control Interface Box:
  The Control Interface Box is part of the SCADA system.
  Control interface box with process diagram in the front panel and with the same distribution that
  the different elements located in the unit, for an easy understanding by the student.
• All sensors, with their respective signals, are properly manipulated from -10V. to +10V. computer
  output.
  Sensors connectors in the interface have different pines numbers (from 2 to 16), to avoid
  connection errors.
  Single cable between the control interface box and computer.
  The unit control elements are permanently computer controlled, without necessity of
  changes or connections during the whole process test procedure.
  Simultaneous visualization in the computer of all parameters involved in the process.
  Calibration of all sensors involved in the process.
  Real time curves representation about system responses.
  Storage of all the process data and results in a file.
  Graphic representation, in real time, of all the process/system responses.
  All the actuators’ values can be changed at any time from the keyboard allowing the
  analysis about curves and responses of the whole process.
  All the actuators and sensors values and their responses are displayed on only one screen in the
  computer. QRALC/CIB
  Shield and filtered signals to avoid external interferences.
  Real time computer control with flexibility of modifications from the computer keyboard of the
  parameters, at any moment during the process.
  Real time computer control for pumps, compressors, heating elements, control valves, etc.
  Real time computer control for parameters involved in the process simultaneously.
  Open control allowing modifications, at any moment and in real time, of parameters involved in the
  process simultaneously.
  Three safety levels, one mechanical in the unit, another electronic in the control interface and
  the third one in the control software.
• 3 DAB. Data Acquisition Board:
  The Data Acquisition board is part of the SCADA system.
  PCI Express Data acquisition board (National Instruments) to be placed in a computer slot. Bus
  PCI Express.
• Analog input:
  Number of channels= 16 single-ended or 8 differential. Resolution=16 bits, 1 in 65536.
• Sampling rate up to: 250 KS/s (kilo samples per second).
• Input range (V)=±10 V. Data transfers=DMA, interrupts, programmed I/0. DMA channels=6.
• Analog output:
  Number of channels=2. Resolution=16 bits, 1 in 65536.
• Maximum output rate up to: 900 KS/s.
• Output range (V)=±10 V. Data transfers=DMA, interrupts, programmed I/0. DAB
• Digital Input/Output:
• Number of channels=24 inputs/outputs. D0 or DI Sample Clock frequency: 0 to 100 MHz.
• Timing: Number of Counter/timers=4. Resolution: Counter/timers: 32 bits.
• 4 QRALC/CCSOF. Computer Control + Data Acquisition + Data Management Software:
  The three softwares are part of the SCADA system.
  Compatible with actual Windows operating systems. Graphic and intuitive simulation of the process in
  screen. Compatible with the industry standards.
  Registration and visualization of all process variables in an automatic and simultaneous way.
  Flexible, open and multicontrol software, developed with actual windows graphic systems, acting
  simultaneously on all process parameters.
  Management, processing, comparison and storage of data.
  Sampling velocity up to 250 KS/s (kilo samples per second).
  Calibration system for the sensors involved in the process.
  It allows the registration of the alarms state and the graphic representation in real time.
  Comparative analysis of the obtained data, after the process and modification of the conditions during QRALC/CCSOF
  the process.
  Open software, allowing the teacher to modify texts, instructions. Teacher’s and student’s
  passwords to facilitate the teacher’s control on the student, and allowing the access to different work
  levels.
  This unit allows the 30 students of the classroom to visualize simultaneously all the results
  and the manipulation of the unit, during the process, by using a projector or an electronic
  whiteboard.
  5 Cables and Accessories, for normal operation.
• 6Manuals:
• This unit is supplied with 8 manuals: Required Services, Assembly and Installation, Interface and
  Control Software, Starting-up, Safety, Maintenance, Calibration & Practices Manuals.
• References 1 to 6 are the main items: ATENG 10940 + QRALC/CIB + DAB + QRALC/CCSOF + Cables and Accessories + Manuals are
  included in the minimum supply for enabling normal and full operation.
  4