Study & observe crystallization through concentration
Batch evaporation / crystallisation under reduced pressure
Study different types of stirrer
Three‐blade propeller, turbine, anchor
From a solution where one or several solids are dissolve the crystallisation allows the separation.
During the separation, when we reach the temperature and the concentra‐ tion needed, the dissolved compounds in the solution turns into solid.
Then, during the filtration step, the crystals are separated from the liquid phase. The partial evaporation of the solvent, and the obtained concentrated solution cooling allows the crystallisation.
The process is discontinuous, the whole solution is fill at the manipulation beginning, the evaporation is finished when the solvent quantity for have the concentration desired to extract obtained. The crystallisation is ob‐ tained by concentrated solution cooling, then the solution crystals are separated with a filter.
General specifications
● Glass tank, SS double jacket bottom. SS flat cover.
● Variable stirrer with 3 types.
● Condenser : glass shell and SS coil.
● 10L, glass graduated vessels.
● Vacuum circuit, with diaphragm vacuum pump.
● Water circuit
● Mechanical hoist.
Instrumentation
● 3 temperature probes Pt100Ω.
● 2 vacuum gauges.
● 2 pressure gauges.
● 2 flowmeters.
