Separation Function

Relief streams from multiple process units contain condensed hydrocarbons and water requiring removal before flaring. Liquid carryover damages flare tips, causes smoking and ground flaring, and violates environmental permits. KOD-DB drums provide efficient gravity separation ensuring vapor-only discharge to flare maintaining safe compliant operations.

Vessel Configuration

Vertical or horizontal drums with vaned inlet distributor creating centrifugal separation. Multiple inlet connections accommodate various relief sources. Wire mesh mist eliminator captures entrained droplets. Vapor outlet flows to flare header. Liquid boot section with level-controlled drainage. ERGIL sizes vessels for combined relief loads and liquid handling capacity.

Design Standards

Constructed per ASME Section VIII with materials suitable for combined relief streams including hydrocarbons, acids, and corrosive compounds. Operating pressure typically 5-50 psig matching flare header backpressure. Design accommodates thermal cycling from varying relief conditions. Relief valve protection against blocked outlet scenarios.

Applications

Refinery flare systems collecting multiple unit reliefs, gas plant emergency depressurization, chemical facility pressure relief networks, offshore platform flare knockout, and any multi-source flare system. Critical equipment protecting flare tips and ensuring environmental compliance across continuous and emergency relief operations.

Liquid Recovery

Level-controlled drain valves route recovered liquids to closed drain systems, slop oil recovery, or treatment facilities. Automatic drainage prevents liquid accumulation. Recovered hydrocarbons provide economic value offsetting equipment costs. Safe liquid handling prevents environmental releases.

Control Integration

High and high-high level alarms prevent overflow. Differential pressure monitoring indicates mist eliminator fouling. Integration with flare gas recovery systems optimizes vapor handling. Automated operation during normal purge and emergency relief conditions ensures reliable performance.

Material Selection

Carbon steel construction for hydrocarbon service. Stainless steel for corrosive streams or sour service with H₂S. Corrosion allowances based on relief stream composition. Internal components resist erosion from high-velocity flows during relief events.

Performance Features

High separation efficiency protects flare tips from liquid damage. Accommodates varying relief loads from normal to emergency conditions. Liquid recovery reduces waste and environmental impact. Proven design essential for safe flare system operations. Minimal maintenance with durable construction.

Construction Standards

Design per API 521 flare system guidelines and ASME Section VIII codes. Sizing accounts for worst-case relief scenarios. Complete documentation with hydraulic calculations, separation efficiency, and material specifications supporting air permit compliance and safe operations.

ERGIL KOD-DB knockout drums deliver critical liquid separation ensuring safe compliant flaring and protecting flare infrastructure in industrial relief systems.