A distributor, installed at the upper part of the bed, does the job that the liquid should be distributed evenly over the bed. There are three types of distributors, namely the gravity type, the flashing type, and the spray type.
Theoretically, a spray type distributor can lead to more even distribution, but some problems like plugging. For this reason, a gravity type distributor is more commonly used.
According to the operating conditions, a wide range of gravity flow distributor designs will be provided including the orifice deck type, the through type, the notched type. etc.
A flashing feed distributor aims to distribute and absorb the forces exerted by the incoming feed, not to evenly distribute the liquid. The common types of flashing feed distributors are the baffle type and the gallery type.