FILTER SCRUBBER
For Maximum Separation Efficiency of
Solid particles and Liquid Droplets
Introduction
Namdaran Petrogas Industries (NPI) Filter Separator provides the maximum possible separation. Down to 3 microns of both liquid and solid particles from a gas stream with a 100% turndown ratio. To obtain this separation efficiency NPI uses a two stage process; the primary stage knocks out the bulk of the incoming liquids and solids which increases the life of the coalescing filters in the final stage.
Design Features
NPI Absolute Separator is a multistage device. At the inlet of the Primary Separation section, small diameter cyclones or vanes remove liquid and solid particles by utilizing the dynamics of centrifugal force and gravity, by removing the bulk of the entrained liquid in this stage, the NPI design increases the life of the Fetal Separation Elements and holds the pressure drop buildup to a minimum. This allows for lime between changing the elements .reducing operating cost and down time.
NPI Two-stage absolute separator utilizes all the forces of mechanical separation. The primary separation section in use to decrease the liquid and/or solids loading in the gas stream. This is accomplished through the use of NPI proprietary separating device such as its high efficiency inertial vanes or its multi cyclone packs. Proper liquid separation is imperative to ensure maximum life and efficiency of the final separation elements.
Final separation select utilizes high efficiency element which are cylindrical, fibrous vacuum formed elements with a controlled pore structure. The result is a seamless tube with a matrix of micro- fibers having up to 95% void fraction. This design offers lower maintenance costs by extending the element life.
Typical application
NPI Fitter Scrubber is intended for use in applications where near complete removal of all entrained particles is required such applications includes:
Combustion Turbines, Gas Compressors
Dessicarit Bed or Molecular Sieve protection
Instrumentation, Meters and Analyzers
Atmospheric Exhaust
Reboriers and Line Heaters
Membrane Separators, Chemical plants
Fuel gas conditioning
Gas transmission/ metering, Oil mist removal
Principle of Operation
As the mist- end solids-laden gas enters the primary separation section of the vessel, the entrained liquids and solid particles are
subjected to centrifugal force.
Cyclone tube:
The gas enters the cyclone tube at tow points (A) and sets up a swirling motion. Solid and liquid particles are thrown outwardly and drop from the tube at (B).The clean swirling gas reverses direction at the vortex (C) and rises through the exit portion of the tube (D).
COALESCING FILTER
Coalescing elements:
The final separation section consists of multiple high efficiency coalescing elements. The gas and fine mists pass from the inside to the outside of the elements where the particles diffuse and impinge on the closely spaced surfaces. The liquid particles ag glornerate into larger liquid droplets and emerge on the outer surface of the coalescing elements. The liquid then runs down the elements and in to the liquid collection chamber. Gas, free of liquid particle entrainment, passes out the vessel
discharge nozzle.
The unfiltered product is pumped under pressure to flow through the housing inlet chamber and inside/out through the multi media coalescer cartridges. This specially developed multi - media cartridge configuration traps and holds minute solid particles to less than one micron, while forcing small water droplets to commingle and grow into heavier, larger drops (see figure 1).
These large gropes then carried to lice outside surface of the cartridge. Having a higher specific gravity than the hydrocarbon fluid, they release and settle to the bottom of the vessel or sump area (see Figure 2). In general, particle removal efficiency increases with coalescing efficiency. This is accomplished by employing a tighter, finer filtration media.
Performance guarantee
Namdaran absolute separators meet separation efficiencies’ of 99.98% of droplets 0.3 micron and larger. The separation efficiency of the NPI filter scrubber is depended upon the coalescing element used for each application.
Design specification:
NPI Coalescing Filler Separator is dependent upon the coalescing element used for each application,
Designed by ASME Pressure Vessel code
Available in sizes starting at 6" nominal diameter
Custom designed for any application
Available in carbon steel, stainless steel and alloy.
Filter access through several styles of full or
reduced opening closures
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