Knock-out Drum
Liquid Seal Drums, Ultimate Flashback Prevention for Flare Safety
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Overview
CRA’s Knock-out Drums are engineered to protect flare systems by efficiently separating and collecting entrained liquids—such as hydrocarbons, condensate, and water from relief gases before they reach the flare tip. Installed upstream of the flare stack, these vessels prevent liquid carryover, flame instability, and hazardous “flaming rain.” Designed for high vapor flow rates and harsh industrial service, CRA knock-out drums deliver reliable liquid handling, reduced system upsets, and long-term operational safety.
Key Benefits
Removes entrained liquids from relief gases to prevent carryover into the flare stack.
Reduces risks of flame extinguishment, irregular combustion, and flaming rain events.
Engineered for large, transient relief flows common in emergency and upset conditions.
Available in horizontal or vertical configurations to suit plot space and flow regimes.
Compatible with liquid seal drums, flare gas recovery units, and downstream flare hardware.
Projects That Push Boundaries
The CRA Edge
Engineered to handle high vapor loads, liquid slugs, and transient flare events safely.
Each knock-out drum is sized from actual process data, not generic templates.
Designed for seamless integration with flare stacks, liquid seal drums, and FGR systems.
Durable construction with reliable liquid drainage for long service life.
