Demister Pad

Saifilter Demister pad removes micron liquid particles from liquid/vapor fluids produced in industrial processes. To prevent liquid particles from flowing into downstream equipment and causing damage to parts.

Saifilter Mist Eliminators can be divided into Wire Mesh Demister, Stainless Steel Demister Pads, Mesh Pad Mist Eliminators, Vane Mist Eliminators, PVC Mist Eliminators, PP Demister Pads, and Oil Demister Filters according to the specific material and structure type. It is usually installed in a separation or distillation tower in combination with Structured Packing and Random Packing. Please choose the best Dumpster Pad according to your specific application.

mist extractor

Saifilter produces Mist Eliminators in various shapes and sizes, suitable for horizontal or vertical installation to meet different working conditions. Mist eliminator media are manufactured from metal monofilaments approximately 0.011" or 0.006" in diameter by braiding and interlocking to form a Wire Metal Mesh Pad with high porosity (97% to 99+%) and uniform density. A less dense mesh can better capture small-diameter droplets.

Demister Filter

Demister Filter, also known as mist eliminator filter or dehumidifier, is an important component in the gas-liquid separation industrial process. Used to intercept tiny droplets from gas flow media and to filter gases.

Saifilter Demister Filter
mist eliminators

Special Alloy Demister Pad

Demister pad in the vessel can choose high-value alloy mesh pad mist eliminator. It can perform well in various concentrations of nitric acid, organic acids, chlorides, wet chlorine, and alkali.

Metal Panel Demister Filter

The filter media consists of metal mesh coils placed in a stainless steel frame. This type of filter is reusable and cleanable and should be used to remove excess water vapor before the steam enters the turbine.

Metal Panel Demister Filter
Saifilter demister pad

PP Demister Pad

Polypropylene is a lightweight filter media. The mist eliminator is available in various pore sizes and can capture droplets escaping with steam. It is resistant to NH3 and H2SO4 steam and has an average operating temperature of no higher than 60°C.

Metal Panel Demister Filter

PTFE Demister Pad, also called PTFE mist eliminator, has excellent chemical resistance and the average operating temperature is between -196℃ and 260℃. Available in different shapes and sizes to suit your specific application requirements.

PP vessel demister

Saifilter Demister Pad Technical Data

ItemDensity (kg/m3)Free Volume (%)Surface Area (m2/m3)Application
PD-18099158Moderate fouling, minimum press drop, dirty service
PD-212098.5210Light fouling, high velocity, dirty service
PD-314498.2280Heavy duty, e.g. oil & gas separators
PD-412898.4460Light fouling, high velocity, dirty service
PD-519397.5375General purpose, optimum efficiency & pressure drop, heavy duty
PD-630096.2575Fine mist condition, super dense
PD-739095750Fine mist condition, super dense
PD-822097.2905General purpose, optimum efficiency & pressure drop, heavy duty
PD-943294.51780Fine mist condition, super dense
PD-1022097.2428General purpose, optimum efficiency & pressure drop, heavy duty
PD-1116096.75000Fine mist condition, super dense

Saifilter de mister pads

Vessel Disc Demister

PE demista pad

Long strip polyethylene pad demister

Manufacturing Materials

MaterialProducts Separated
SS304For nitric acid, water steam
SS304LFor petroleum Fractions
SS316For fatty acids, reduced crude
SS316LReduced crude containing acid & other corrosive
CopperAlcohol, Aldehyde, Amines
MonelFor caustic soda & other alkali, dilute acid
NickelFor caustic soda, food product
Alloy 20Nitric acid, alkaline PH
Teflon FEPFor Highly corrosive conditions
Hostaflon PTFEFor Highly corrosive conditions
Inconel 825For dilute acid media & alkaline solution
Inconel 625For phosphoric and fatty acid
PolypropyleneFor hydrilic acid, corrosive service at moderate temperature
P.V.D.F.Corrosive Service for Temperature 140 °C
P.T.F.E. / FEP / PFA / ETFE / ECTFEFor highly corrosive and high temperature
HostaflonSulphuric acid plant, temperature up to 150 °C
Glass WoolFor very fine mists

wire mesh demister

Ring De Mister Pads

PTFE mist eliminators

PTFE Disc De mister pads

Saifilter Demister Pad Standard Knitted Mesh Type

There are many possible wire mesh demister variations, including:

  • Wire diameter
  • Number of wires together
  • Number of demister mesh layers
  • Size of mesh stitch
  • The thickness of the demister mesh pad

TypeWire diameter (mm)Specific Surface Area (m2/m3)Bulk Density (kg/m3)Voidage
SPFlat Wire0.1x 0.44751680.9788
Round Wire0.23320
DPFlat Wire0.1x 0.36261860.9765
Round Wire0.19484
HRFlat Wire0.1x 0.43131340.9875
Round Wire0.23217
HPRound Wire0.08 - 0.224031280.9839

Standard Mesh Styles

Mist eliminator filter media are knitted mesh made of interlocking metal or plastic monofilaments. These demister pads can be cleaned and reused. Saifilter offers four different types of knitted mesh media depending on the design requirements of the application.

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Schematic Diagram of Knitted Mesh Interlock Types

Simplified View of the Saifilter Demister Pad Configured in Separator Vessels

Correct configuration of Mist Eliminators in specific applications is crucial. All Demister Pads are segmented and designed to facilitate installation through manholes. For the internal structure of the Vessel Demister, multiple factors should be considered, including the required cross-sectional area and geometric shape. The figure below shows the corresponding structural configurations of different Mist Extractors. It can be of any size or shape.

The performance of Mist Eliminators depends on uniform velocity distribution over the cross-sectional area. Ideally, work with minor fluctuations in flow rate to avoid leaving other sites unused.

Wire Mesh Demister Pad is preferably designed upstream of the outlet nozzle to avoid insufficient distance space. Steam tends to pass through the Demister Pad in the area closest to the outlet nozzle. First, the steam passes through the integral flow distributor in the downstream area, which can avoid the phenomenon that other regions of the demista pad are not used.

demister pad Sketch Map.

Mist Eliminators Installation Vertical Vessels

demister pad Sketch Map

Mist Eliminators Installation Horizontal Vessels

Demister Pad Velocity Design

The capacity factor is determined empirically and is affected by a combination of factors, including the type and style of the mist eliminator, the geometry of the mist eliminator relative to the steam flow, operating pressure, fluid viscosity, and process parameters such as liquid surface tension. Taking a typical air-water system as an example, the capacity coefficient will be different under different environmental conditions. Typically, the capacity factor for vertical flow is approximately 0.35 ft/sec, while for horizontal flow, the capacity factor is about 0.42 ft/sec.

The Souders-Brown equation is still widely used to determine the appropriate flow rate for a given system. The Souders-Brown equation is as follows:

For most systems, the maximum allowable steam velocity, "V," is calculated according to the Souders-Brown equation below. It is recommended that the design speed should be 60-75% of “V” to account for surge and disturbance conditions. For most systems operating at 30-110% of the maximum allowable steam velocity for high-pressure and vacuum services, the constant "K" requires a specific design.


Saifilter Demister Pad Installation Diagram

The Knitted Mesh Demister Pad can be installed in different packed towers and equipment for different media and gas filtration and separation.

There are two main types of wire mesh demister pads: the disc-shaped demister pad and the bar-type demister pad. These demister pads can be further demister pads on their installation orientation: there are "Upload" and "Download" types. The choice between them depends on the specific installation conditions.

  • Upload installation Demister Pads: These are chosen when the inlet or opening is above the pad. Additionally, if there is no opening, but it has a flange, the upload demister pad is the preferred choice.
  • Download installation Demister Pads: On the other hand, download Demister pads are selected when the inlet or opening is positioned below the Demister pad.

The download types installation needs more supporting grids and accessories than the upload types. The above two options can ensure the optimal performance and efficiency of the Demister Pad and are consistent with the specific configuration of the application.


Upload Installation Demister Pad

Optional size range DN300- DN5200


Download Installation Demister Pad

Optional size range DN700- DN4600

Schematic of Demister Pad Installation


Vertical Distillation Column


Vertical Scrubber Mist Eliminator


Vertical Mist Eliminator for Wet Scrubber


Vertical Packed Tower


Horizontal Spherical Separation Tower


Horizontal mist extractor in separator Tower

Saifilter Demister Pad Provides ODM/OEM Services

As a qualified Demister Supplier, our technical design team with many years of experience can custom design and manufacture Mesh Pad Mist Eliminator according to your specific application and customize Demister Pads of different shapes, sizes, and gas-liquid separation efficiencies.

From prototype drawing design to final verification delivery, ensure each product meets standard requirements. Whether you need ODM or OEM services, Saifilter is honored to discuss and communicate with you to provide the most economical Demister Pad solution for your operation project.

If you want to replace your existing Demister Pad or Mist Eliminator Suppliers, Saifilter offers a variety of options. It can replace the original Mist Eliminators of well-known brands such as KOCH GLITSCH Demister, OTTO YORK Demister, etc.

Disc Demister Filter drawing
Demister Filter drwing


  • Easy to install in existing containers
  • Customize any size or shape
  • Large specific surface area, high separation, and removal efficiency.
  • Less maintenance and service are required.
  • Adaptable to any corrosive and temperature conditions.
  • Control exhaust emissions and reduce air pollution
  • Eliminate or minimize equipment damage caused by corrosion
  • Increase processing and recycling of valuable materials
Saifilter demista pad


  • Mist eliminator process application
  • Gas-liquid separator
  • Distillation equipment
  • Process absorbers, settlers, and scrubbers
  • Chemical separators and extractors
  • Oil and gas processing equipment
  • Scrubbers, gas-liquid separators and receivers
  • Refinery tower
  • Liquid coalescer
  • Pollution control equipment
  • Two-phase eliminator compressor
  • Liquid entrainment of equipment
  • Product return system
Stainless Steel Demister Pad

Relevant Products

Special Alloy Demister Pads, including Titanium and Inconel, excel in extreme temperatures and corrosive environments, outperforming standard stainless steel.

Learn More

Demister Filters efficiently separate droplets from vapor and are adaptable to fluctuating conditions with minimal lag.

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Demister Filters efficiently separate droplets from vapor and are adaptable to fluctuating conditions with minimal lag.

Learn More

PP Demister Pad offers robust chemical resistance and efficient 3-5um droplet removal, suitable up to 90°C.

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PTFE Demister Pads excel in chemical resistance and temperature durability, ideal for demanding industrial use.

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The main principle of the Demister pad is coalescence by inertia. When tiny liquid entrainments pass through the tortuous path of a demister pad, they collide with each other between the gaps of knitted wires and condense into larger liquid droplets. Weight gain, droplets drop down. Thus, the mist will be separated from gas streams, and you can obtain pure gases.

Regular and proper maintenance of the demister pad is essential. After a period of use, the gas particles may clog your demister pad, and the pressure drop will increase. You need to clean it. Various cleaning methods will be mentioned here, including spray with cleaning liquids, boil, soak... to help you regain a clean demister pad while recovering its high filtration efficiency.

Please be more careful when you clean the demister pad, and carefully check for damage after each cleaning. Measure its wire diameter with a micrometer to confirm if there is any change compared to the brand new. In addition, a spare demister pad is necessary before you start cleaning.

The primary purpose of a demister pad is to remove liquid droplets and mist from gas streams. This is crucial in many industrial processes to ensure the purity of the gas, protect downstream equipment from corrosion or damage, and improve overall process efficiency. Demister pads provide a large surface area where the droplets can collide, merge, and grow large enough to be separated from the gas flow due to gravity. They are commonly used in petrochemical, natural gas, and chemical industries, particularly in distillation, absorption, and steam generation processes.

A demister pad is installed in a separator to enhance the separation of liquid droplets from the gas phase. Walls are used in many industrial processes to divide different stages of a fluid mixture, such as liquid-liquid, liquid-solid, or liquid-gas. In the context of gas-liquid separation, the demister pad is positioned where the gas phase exits the separator.

As the gas passes through the demister pad, the pad's mesh or coalescing material captures the liquid droplets suspended in the gas. These charged droplets coalesce on the pad's surface and fall back into the liquid phase due to gravity. This process significantly improves the separation efficiency, ensuring the exiting gas is free of liquid contaminants. Demister pads in separators are essential for process optimization, product quality control, and equipment protection.


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