Yield from cyclohexane distillation recovery
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We used cyclohexane as a solvent with water present, and then distilled off the cyclohexane; the yield was around 80% (about 3% of the cyclohexane was dissolved in the water). The supervisor said that the yield could be improved further! I would like to ask those who use cyclohexane: what is your typical yield?
Unfortunately, unlike the original poster, we are **; we hope that other users on the chemical engineering forum can join in the discussion
Water and cyclohexane are azeotropic; please tell me the composition of water and cyclohexane in your solvent
Reply to 1# Tianbian Baiyun: Do you mean that the cyclohexane separated from the water needs to be distilled again before it can be reused? Why not use it directly? Is the unredistilled cyclohexane highly hydrated? Are there other impurities present that affect the reaction? Whether or not this is present in the water, the yield is still a bit low! Secondary condensation used in the condenser? Is frozen saline being used? Is the cyclohexane contained in water being recovered? We use dichloromethane, whose boiling point is around 40 degrees, and the recovery rate through distillation is over 90%!
Reply 5# zyp0009928: It is a reaction with water carried back; after the water-carrying process is complete (that is, once the reaction is finished), cyclohexane is separated out to obtain the reactant.
Reply to 5# zyp0009928: For the second-stage condensation, water at 7°C is used. How do you carry out condensation when distilling dichloromethane? (Condenser area, cooling medium used)
Reply to 4# 21067758: Could you tell us about your usage experience?