Learn when a gas distributor is required below random packing, including side-entry gas nozzles, inlet momentum, tower diameter, support-grid effects, localized flooding, pressure drop and retrofit considerations.

Learn when a hold-down grid is required for random packing, including plastic packing lift, high gas velocity, bed movement, restraint clearance, hydraulic open area, retrofit and installation considerations.

Learn how to select a packing support grid for a random packed tower, including bed load, hydraulic open area, packing retention, liquid drainage, ceramic packing support, retrofit and manway installation considerations.

Learn when a liquid redistributor is required in a random packed tower, including packed-bed depth, tower diameter, wall flow, liquid loading, pressure drop, bed segmentation and retrofit considerations.

Learn why a random packed tower may lose efficiency at low liquid load, including minimum wetting behavior, distributor turndown, channeling, packing material, liquid properties and troubleshooting steps.