Experiments

This unit enables to deepen the following issues:

  • Learning the fundamental principle and method of operation of a plate and frame filter press
  • Learning the fundamental principle and method of operation of a Tangential micro filter
  • production of a suspension
  • removal of the filter cake
  • insertion of the filter cloth
  • fundamentals of cake filtration
    • Darcy’s equation
  • variation in time of filtrate quantity and solid concentration in filtrate
  • mass of filter cake dependent on filtrate quantity
  • Dead end filtration (filter press)
  • Tangential filtration (micro filter)
  • Characteristic equations of filtration
  • Filtration at constant flow rate or pressure
  • Display of plant operational parameters on the schematic diagram with real-time data
  • Automatic flow and pressure control by PID controller (optional)

Specifications:

  • Framework of stainless steel with castors
  • Process flow diagram in front of panel.
  • Feed tank equipped with stirring system driven by mechanical stirring device
  • Product Tank for collecting the filtered water
  • Feeding pump with control system by electronic inverter
  • Flowmeter to measure the inlet flowrate
  • 2 Pressure gauges, one before filters and other after micro filter
  • 1 safety pressure switch after micro filter
  • Filter press of stainless steel with frames of transparent Plexiglas for displaying the process
  • Micro filter provided with housing
  • Electronic turbidity meter
  • Microprocessor digital PID controller
  • Piping and valves
  • Emergency button

Plate and frame filter press or micro filter are used in the beverage industry, for example, to clarify intermediate products.

Filter Press and Micro Filter Pilot Plant consists of a filter press and a micro filter (tangential filtration) that are fed by a turbine type centrifugal pump connected with a tank filled with the solution that have to be filtered. The filtrate is connected into another tank. A microprocessor PID controllers enables to operate at a constant pressure and flow rate (optional).

In a tank, water and diatomite suspension are made (recommended). A stirrer makes sure the solid doesn’t settle and stays in suspension. The plate and frame filter press or micro filter receives the suspension from the pump and empties it into each of its separate chambers. Two filter plates and one filter frame combine to make a separating chamber. Filter cloths are placed over the grooved filter plates. The filtrate travels through the filter cloth and into a collecting pipe through the grooves in the plates. Through the collecting pipe, the filtrate leaves the plate and frame filter press and is collected in the filtrate tank. The filter cloth is where the solid material is split off, where it grows into a filter cake. The filter cake’s flow resistance rises as it gets thicker. The filtration procedure is completed when the separating chamber is filled or a maximum pressure difference has been attained. When the maximum pressure difference is attained using a micro filter, the micro filter is removed from the casing and washed.

Technical Data

Tanks

Feed Tank

  • Material: Stainless Steel
  • Volume: 100L
  • Stirrer Speed: 0~300 RPM

Product Tank

  • Material: Stainless Steel
  • Volume: 100L

Feed pump

  • Type: centrifugal
  • Flow: 0~12LPM
  • Head max: 6m

Flowmeter

  • 0~7LPM

Filters

  • 1 Plate and frame type filter with 10 frames
  • 1 tangential type micro filter

Pressure Gauges

  • Quantity: 2
  • Range: 0~4bar

Pressure switches

  • Quantity: 1
  • Set: 3 bar

Turbidity meter

  • Range: 0~2000NTU
  • Type: hand held sensor with digital readout

Measuring Ranges

  • Feed flowmeter: 0~7LPM
  • Pressure: 0~4 bar
  • Turbidity: 0~2000NTU

 Software CT-3292SW (optional)

DAQ software specially designed in National Instrument™, LABVIEW™ environment to measure and calculate the results of apparatus. The software is optional and while using software a set of electronic sensors are included. Software can be run with any Windows™ environment.

Scope of Delivery

  • 1 experiment unit
  • 1 instruction manual

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