Structural characteristics of tower internals

The tower internals are mass transfer equipment in which the packing in the tower is used as the contact member between gas and liquid phases. The tower body of the packed tower is a straight vertical cylinder, and the bottom is equipped with a packing supporting plate, and the packing is placed on the supporting plate in a random pile or whole building. A packing pressure plate is installed above the packing to prevent it from being blown by the rising airflow.

The liquid inside the tower is sprayed onto the packing from the top of the tower through the liquid distributor, and flows down the surface of the packing. The gas is fed in from the bottom of the tower, and after being distributed by a gas distribution device (small diameter towers generally do not have a gas distribution device), it continuously passes through the gap of the packing layer in countercurrent with the liquid. On the surface of the packing, the gas and liquid two phases are in close contact for mass transfer .

The internals of the tower are continuous contact gas-liquid mass transfer equipment. The two-phase composition changes continuously along the tower height. Under normal operating conditions, the gas phase is the continuous phase and the liquid phase is the dispersed phase.