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1 Product Overview
High efficiency horizontal multi-stage steam-water separator adopts horizontal cylinder equipped with three-series separation internals, integrating gravity settling, inertial impaction and wire mesh coalescence.When saturated wet steam flows into the unit, velocity drops and large droplets settle first. Medium droplets are captured by corrugated baffles, while residual fine mist is trapped by wire mesh demister. Condensate collects in the bottom sump.Compared with single baffle or single cyclone separators, multi-stage structure captures droplets of different sizes efficiently and maintains high performance under fluctuating flow and high humidity. Widely applied on large main steam pipelines, vacuum extraction lines and evaporation concentration systems.
2 Working Principle
Wet steam enters horizontally, flow area expands and velocity reduces; large droplets settle by gravity;
Gas passes primary corrugated baffle section, flow changes direction repeatedly; medium droplets collide and coalesce on plates;
Residual fine mist enters secondary wire mesh coalescing unit; tiny droplets merge and fall down;
Separated condensate flows into liquid sump; anti-splash weir prevents liquid re-entrainment;
Condensate is drained continuously or intermittently. Dry steam flows horizontally to outlet to complete multi-stage separation.
3 Main Structure
Horizontal pressure vessel shell, inlet & outlet flanges, flow homogenizer, primary corrugated baffle module, secondary wire mesh demister module, anti-re-entrainment weir, liquid guiding trough, support legs, handhole. Optional parts: level sensor, automatic drain valve, sight glass, thermal insulation jacket.
4 Technical Specifications
Nominal Diameter: DN100 ~ DN1600
Design Pressure: Vacuum negative pressure ~ 4.0 MPa
Design Temperature: ≤320℃
Captured Droplet Size: ≥5 μm
Separation Efficiency: ≥95%, maximum up to 98%
Housing Material: Q235-B carbon steel, SS304, SS316L stainless steel
Internals Material: SS304 stainless steel
Installation: Horizontal horizontal mounting
Drainage Mode: Continuous trapping / automatic level-controlled drainage optional
5 Application Scope
Extraction pipelines of thermal power plants, chemical multiple-effect evaporation & rectification units, paper pulp evaporation section, fruit juice vacuum concentration line, pharmaceutical vacuum extraction equipment, district heating pipelines, waste heat recovery steam circuits.
6 Installation & Operation Guidance
Install strictly horizontally, keep cylinder level and aligned with pipeline; inclined installation is forbidden.
Reserve sufficient straight pipe sections at inlet and outlet to reduce vortex and guarantee uniform flow distribution.
Ordinary steam traps cannot be directly adopted under vacuum negative pressure; select vacuum dedicated drainage assembly.
External thermal insulation is recommended to reduce dew condensate on outer wall.
Inspect drainage equipment regularly; open handhole annually to flush scale and sediment on internals.
Complete air tightness test before startup; monitor differential pressure and avoid overloading and excessive flow velocity.
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