Batch distillation in the tower bottom
Thread Content
For batch distillation in the tower bottom, is it necessary to maintain a constant volatilization rate? Due to the intermittent operation, the liquid level in the tank keeps dropping, and the heat exchange area provided by the jacket heating gradually decreases; therefore, it is necessary to continuously adjust the steam flow rate to maintain the desired level. If necessary, what parameter should be used to indirectly replace the volatility value – the top pressure or the condensation volume of the total condenser – in order to link it to the jacket steam control valve?
Could jacketed heating for staged heating be considered?
In my opinion, it is necessary to control the amount of vaporization. Excessive vaporization may lead to too high a temperature at the condensation outlet, thereby affecting the condensation process; too little vaporization, on the other hand, prolongs the distillation time. This can be controlled by using the amount of steam at the top of the tower and at the bottom of the tower as controls, or by using the amount of condensate as a control mechanism