1 reply to this topic

[naveendeepala]

Hello, Admin..

 Wishes for the day.

    I am D.Naveen Kumar a fresher chemical engineer. I have started my professional career in a bulk drug company looking after columns in solvent recovery. 

 

details of the problem to be assisted:

 

Column dia - 650mm

Column height - 14m

kettle reboiler - 6kl

primary condenser - 50m²

Secondary condenser - 8m²

 

we have settled our column on the kettle reboiler directly.. & the condensors are installed 2mtr higher than the column. No decanter is used.

 

methanol+toluene batch of 5kl is run.

It is taking 24hrs to start the collection, & toluene even being higher B.P is collected first 

Is there any remedy to get the collection earlier than a day with out facing the problem of specific gravity.

[GimliXJ]

It will come down to pressure and temperature.  If your condensers can handle the extra load and your kettle reboiler has the extra capacity, start heating the kettle quicker.  If your kettle temperature is on a program, you may be able to increase the kettle temperature ramp rate.  If your reboiler and/or your condensers are operating at their limits you may need to lower the columns operating pressure.

 

Do you have a batch distillation software package?  This may help in your discision if you can see how a simulation responds to the changes.