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[jp1009]

I have been tasked with designing a reflux condenser for a batch reactor, the reaction take place in ~4500kg toluene and ~1000kg methanol at 60 Celcius and at atmospheric pressure for two hours. 

 

The reactor has a nitrogen blanket which is continuously purged through the condenser but the flowrate of nitrogen is not specified.

 

How would I calculate the rate of evaporation of these solvents?

 

Any guidance would be greatly appreciated!