Vapor Outlet Nozzle

The vapor outlet nozzle is a flanged or welded connection point on a reflux drum designed to handle the controlled discharge of vapor-phase materials. It serves as the interface between the drum's vapor space and downstream equipment like condensers or vapor lines, ensuring proper flow distribution, pressure management, and phase separation. Typically positioned at the top of the drum, it prevents liquid carryover and maintains process efficiency in distillation, absorption, or stripping operations.

The nozzle operates by providing a dedicated flow path for vapor exiting the reflux drum. As vapor accumulates in the drum's upper section due to density differences, it flows through the nozzle, which is sized to maintain optimal velocity—preventing re-entrainment of liquid droplets while minimizing pressure drop. Its design often includes features like vortex breakers or anti-swirl devices to ensure smooth, stratified vapor flow without disrupting the liquid level below.