Distillation Column Internals

 

Learning objectives 

• How to Design the distillation column internal

. Flooding and weeping concepts 

Flooding 

• Excessive liquid build-up in column leads to flooding condition.

 • Liquid cant get down the column due to high vapor velocity. 

• It sets the upper limit of vapor velocity for steady State column operation

Weeping 

• At low vapor flow rates, liquid starts to leak from the plate holes.

 • When none of the liquid reaches to downcomers at extreme weeping 

condition at very low vapor flow, is called dumping

see simulation