A liquid distributor is required at all locations in the column where an external liquid stream is introduced. In addition to providing a uniform  liquid distribution pattern to the top of the packed bed, the distributor must provide sufficient gas passage area to avoid a high-pressure drop or liquid entrainment. The liquid distributor should have a high turndown ratio and be resistant to fouling.
 
We have the following distrubitor:
Orifice ladder liquid distributor
Orifice riser distributor
Orifice pan liquid distributor
Orifice trough liquid distributor