Column overload/flooding

[Evil Wizard]

I'm hoping to get some quick info, especially from any vapour engineers out there.

I have a design in mind where I actually want to induce the vapour in my column to crash - turn to liquid and drop down where it will siphon out before it hits the heating element.

I plan on injecting the packed column with hot vapour, 60%-70% most likely, in a constant rate, temp and pressure.

A coil dephlagmator on top of the column will be tuned by water temp and flow rate to achieve removal of meths and some heads past the coil (cooling management), refluxing the majority of ethanol back into the column.

My question is, will the increasing vapour density in the column eventually cause it to crash (this is called overloading?) or will I need to set up a sensor to kill the heating element periodically?

Thanks.