The Role of Knock-Out Drums in Industrial Flare System Safety Industrial flare systems are designed to safely combust waste gases and relief streams from oil and gas processing, refining, and chemical manufacturing operations. Before gases can reach the flare burner tip for combustion, they must pass through a liquid separation system that removes entrained liquids and prevents them from being carried into the flame. The knock-out drum, also called a flare knock-out drum or KO drum, serves this critical function as the first major component in the flare header system downstream of process sources. Understanding knock-out drum design principles, sizing...