Tesca Venturi Air Scrubber System 32478 s used to demonstrate dust pollution control and the effect of liquid -to-gas ratio (L/G) on separation efficiency. The system comprises of a venturi tube, separation chamber, dust feeding system, water recirculation system and a variable speed air blower. The venturi tube is made of transparent and rigid plexi-glass for the observation of flow. A differential pressure transducer is used to measure pressure drop across the
venturi. The cylindrical separation chamber is also made of transparent, rigid plexiglass with a diameter of 500 mm and height of 1.6 meter. At the side bottom of the separation chamber is a circular inlet which is connected to the outlet of the venturi. The chamber also houses a mist eliminator at the top which prevents water droplets from escaping the chamber.
A collecting plastic tank is provided to collect the mixture of dust and water at the bottom of the separating chamber.
The water recirculation system comprises of a water tank, pump, flow meter, pressure gauge and pressure regulator. The stainless steel water tank is located below the separation chamber and supplies water to the pump. A filter is attached to the pump inlet to prevent dust and debris from damaging the pump.
The air blower is used to draw air at a maximum rate of 300 m3/hour through the separation chamber. The inlet air velocity can be adjusted by varying the air blower speed. The dust feeding system is used to simulate pollution in the air stream before entering the separation chamber.
The system’s main frame is made of welded mild steel. The frame is epoxy-coated for aesthetics, durability and heat and corrosion resistance. A control panel is mounted on the steel frame as well to house all the electrical and electronic components.

Training Aims / Experiments List

• Understanding of air scrubber system.
• Understanding the working principles of air scrubber system.
• To demonstrate and simulate dust pollution control using a venturi scrubber.
• To study the effect of air velocity and water flow rate on separation efficiency.

Technical Specifications
Venturi tube

• Made of transparent rigid PVC for easy observation and durability
• Throat ID : 30 mm
• Inlet & outlet ID : 100 mm
• Convergence angle : 10°; Divergence angle : 5°
• Tappings at inlet & outlet for pressure drop measurement

Separation chamber
Made of transparent rigid plexiglass for easy observation and durability
Cylinder ID : 500 mm; Height : 1.6 meter
Tangentially connected to a circular inlet
Mist eliminator at top made of stainless steel
Plastic collecting tank at the bottom

Water recirculation system
Stainless steel tank with a capacity of 60 L c/w level switch
Centrifugal pump capable of delivering up to 25 LPM
Flow meter 0 - 10 LPM

Air blower
High pressure blower capable of delivering 300m3/hour @ 3000 rpm
Able to withstand up to 20kPa static pressure
Comes with inverter for regulating blower speed
Instruments & accessories
Venturi type air flow meter with differential pressure gauge. DP range : max     20kPa
Feeding system made of stainless steel tank and flow regulating valve

Control Panel
Epoxy coated steel box
Water proof panel sticker
Housing for electrical and electronic components

Optional accessories
Digital indicators with selector switch (2 units)
Differential pressure transmitters (3 units)
Liquid flow meter (1 unit)
Data acquisition system

Components List
Epoxy coated steel frame.
Clear plexiglass separating chamber.
Clear plexiglass venturi tube.
Stainless steel water tank.
Centrifugal pump.
Differential pressure gauge.
Frequency inverter.
Control panel.
Plastic collecting tank.
Air blower.
Flow meter.
Water filter.
Stainless steel dust tank.