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China, Chinese Liquid Seal Drum for Biogas & Flare Systems Adjustable Submergence OEM/ODM1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Chemical Storage Transportation EquipmentLiquid Seal DrumFlare Liquid Seal Drum
Yangzhou Tongyang Chemical Equipment Co., Ltd.
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Product DescriptionProduct IntroductionA Liquid Seal Drum uses a controlled liquid column to create backpressure and prevent air ingress, reverse flow, and flashback in flare, vent, biogas, and process gas lines. Gas enters through a dip pipe submerged in liquid; the hydrostatic head (ΔP = ρ·g·h) provides a robust, passive seal. Our drums are available in stainless steel (SS304/SS316L) or carbon steel, with custom volumes, submergence heights, and nozzles. Options include N2 blanketing, flame arrestors, level instrumentation, overflow/return lines, and ASME/GB code design.Key Parameters (customizable; typical ranges)Working Volume: 0.3–20 m3 (custom larger available)Design Pressure: Atmospheric to +0.05 MPa (typical); set to project needsDesign Vacuum: 0 to ?0.005 MPa (non-code vacuum; request if needed)Design Temperature: ?20 to +180 °C (higher on request)Seal Liquid: Water (default) / glycol / brine / mineral oil (per process)Submergence Depth (h): 150–800 mm typical (designed from required ΔP)Materials (Wetted): SS304 / SS316L / Carbon steel Q235B; Duplex 2205 / 904L / lined optionalConnections: Inlet dip pipe, gas outlet (top), vent/breather, overflow/return, drain, level gauge portsNozzle Standards: ASME/ANSI, EN/DIN, or tri-clamp (sanitary service)Finish: Pickled & passivated stainless or industrial paint system for CSCompliance (optional): ASME VIII Div.1 / GB/T 150 (when designed as a pressure vessel boundary)Inspection & Testing: Hydrostatic test (if code), leak test, weld PT; third-party BV/TüV/SGS on requestSizing rule of thumb: Required seal pressure ΔP (kPa) ? submergence h (m) ≈ ΔP / (ρ·g). We design with 20–50% safety margin.Product FeaturesReliable backflow & flashback prevention: Liquid column seal provides passive, fail-safe isolation.Adjustable submergence: Field-set weir/standpipe or removable dip pipe for easy ΔP tuning.Low maintenance: Simple internals; clean drain and large manway for service.Safety options: Flame arrestor, N2 blanketing, vacuum/pressure relief, earthing lug, overflow to closed drain.Instrumentation-ready: Sight-glass or magnetic level gauge, level switches, temperature & pressure ports.Built for your medium: Stainless or coated carbon steel; heated/insulated for cold climates.Typical Industries & UsesFlare/Vent Systems in refineries, petrochemicals, gas processingBiogas / Landfill Gas / Anaerobic Digestion (prevent air ingress & flashback)Coke Oven / Steel / Foundry off-gas linesChemical & Fine Chemical vent headers and safety relief manifoldsWastewater & Pulp & Paper odorous gas lines with water seal
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