This operation involves preferential solubilizing of one or more solubleconstituents (solutes) of a solid mixture by a liquid solvent. The unitdescribed here is for a semi-batch operation.
The solid to be extracted is put inside a Glass Fiber Bag and placed inan Extraction Vessel. Solvent from the Reboiler is continuously evaporated,condensed and circulated through a Reflux Divider by means of piping networkand Valves. When desired/ steady concentration of solute is achieved in thesolution the operation is discontinued. The solution is drained off andcollected for further use.
After charging fresh solid in Fiber Bag and solvent in Reboiler, thecycle can be restarted again.Theunits are available in Vessel Sizes of 10 Liter, 20 Liter, 50 Liter, 100 Liter,200 Liter and 300 Liter and is suitable for operation under atmosphericpressure.