• Fundamentals of solid-liquid extraction
  • Determining the number of theoretical stages
  • Influence of type of solvent, flow rate of solvent and temperature of solvent on the extraction process
  • Influence of extraction material feed rate and extractor revolving speed on the extraction process
  • Extraction of oil from soybean laminate with hexane
  • Extraction of oil from olive husk with hexane
  • Extraction of starch from potatoes with water


  • Frame made of stainless steel
  • Process flow diagram in front of panel
  • Extractor made of transparent material
  • Hopper for storing the solid
  • Motor for solid feeding Archimedean screw
  • Motor for the extractor
  • Programmable timers for controlling the starting and stopping of the feed
  • Tank for storing the solvent
  • Tank for storing the extracted phase
  • Tank for storing the exhausted solid
  • Thermocouple with sheath along with electronic temperature indicator
  • Thyristor for controlling the heater power
  • Electric heater for pre heating of solvent, Power = 400W
  • Metering pump of rust free material for the solvent.
  • Piping and valves of stainless steel (where necessary)
  • Safety devices and control for protection of system
  • Emergency push button
  • Autonomous pilot unit with computerized control software
  • UPS with significant backup to shut down the plant in the event of a power outage
  • Computer system for the Acquisition of data from plant
  • Data acquisition via USB under Window
  • Spares will be supplied for smooth operation for the period of 1 year.
  • The unit will be provided with all required accessories for smooth running, gases with cylinders (where required), calibration kits (if required), installation & after-sale services, maintenance services and operational manuals.

This unit allows a soluble component of a solid mixture to be extracted with a revolving extractor. In continuous mode, pure solvent (distilled water) is delivered from a tank to the sprinkler of the first extraction stage where it is distributed over the solid mixture (extraction material).

The solvent seeps through the extraction material, absorbs its soluble components (potassium hydrogen carbonate) and passes into the collecting segments. From there, the enriched solvent is delivered to the sprinkler of the next stage. After passing through the last stage, the extract (the solvent charged with the extracted component) is collected in the extract tank. The extraction material is continuously fed into the cells of the rotating extractor by a spiral conveyor.

The extraction material and the solvent move in counter flow. The extraction residue drops into a tank after one revolution of the extractor. Discontinuous mode is possible with the extractor stopped.

The pump is available for delivering the solvent. Its speed can be adjusted. The temperature of the solvent can likewise be adjusted with PID controllers. All measured values can be viewed by software. The solid mixture (extraction material) is produced prior to the extraction experiment.

Technical Data


  • Dia.: 200mm
  • Height: 525mm
  • Stages: 12
  • Material: Transparent
  • Motor: Geared
  • Speed: 0~10rpm


  • Capacity: 3L
  • Feed rate: 20l/h
  • Motor: Geared
  • Speed: 0~30rpm
  • Material: Stainless Steel


  • Material: Plastic
  • Capacity: 10L
  • Quantity: 3

Metering Pump

  • Flowrate: 0~60l/H

Measuring ranges

  • Temperature: -100oC~400oC
  • Conductivity: 0~20mS/cm

Software CT-3304SW

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.