Introduction
A Knock-Out Drum (KO Drum), also known as a Vapor–Liquid Separator, Suction Scrubber,
or small-scale Slug Catcher, is a specialized pressure vessel designed to remove liquid droplets,
entrained mist, aerosols, and condensate from gas streams. KO Drums protect downstream compressors,
blowers, turbines, burners, and pipelines from damage caused by liquid carryover or slug flow.
Widely used in oil & gas production facilities, refineries, petrochemical plants, power plants,
and gas transmission networks, KO Drums ensure safe, efficient, and stable operation of gas-handling systems.
Product Description
A KO Drum operates on gravity separation, flow stabilization, and mist elimination principles.
It provides adequate residence time for vapor–liquid disengagement and uses internal components such as
mesh pads, vane packs, cyclones, and inlet diffusers for enhanced separation efficiency. The design ensures
liquid-free gas output suitable for downstream process equipment.
