Wire Mesh Pad Eliminator

Standard: Metal grids fully banded.

Customized: Mesh pads containing two or more mesh styles can be customized for special design needs

supplying clients with the highest quality fabricated steel products for their gas-liquid separation and custom fabrication needs.

The wire mesh demister is an efficient solution for Mist Elimination and Separation. It features high material density, large surface area, low porosity, and high capacity factor. At low liquid flow rates, it exhibits high mist removal efficiency and is suitable for various general-purpose applications. Additionally, the product boasts anti-fouling properties, effectively preventing blockage by dirt and impurities. The wire mesh pads offers a wide range of style options, including KUltra High Efficiency, High Efficiency, Good Efficiency, Best Gen. Purpose, Very High Efficiency, Good Efficiency (w/glass co-knit), Ultra High Efficiency, Good Efficiency, Anti-Fouling, Kynar & Very High Efficiency, Good Efficiency, Anti-Fouling, etc. All styles are tiltable to enhance capacity and drainage performance. The wire mesh demister provides a variety of options, including standard metal mesh, fully bundled mesh, and/or high-temperature mesh with thermal annealing treatment. Additionally, the company offers composite meshes that combine two or more mesh styles to meet special design requirements. The woven wire mesh pad mist eliminators custom manufactured to meet specified separator application requirements.The woven wire mesh pad mist eliminator provides gas-liquid separation at lower mist eliminator cost. The use of a mesh pad eliminator boosts separation effectiveness as it can remove particles as small as 5 microns.

Wire mesh mist eliminators

How a mesh pad filter works

The most prevalent type of mist eliminator is wire mesh. These types of demisters are most effective for removing droplets from 3mm to less than 1 micron in diameter.

Mesh mist eliminators have either a vertical or horizontal airflow. Vertical mist eliminators are very common. Horizontal mist eliminators are commonly used in applications like battery manufacturing, chrome or nickel plating, and chromic anodizing.

Here’s how a mesh pad filter works: a random woven mesh of wire made from metal, polyester, polypropylene, or glass fibers sits between the gas stream inlet and the clean air outlet. The dirty air moves through the filter media, where liquid droplets coalesce on the filter mesh. The liquid is collected in a reservoir, and a fan pushes the clean air to an outlet.

The droplets are removed from the air by three forces: inertial impaction, direct interception, and Brownian diffusion.

Inertial impaction is when the droplets in the air stream hit the fibers in the mesh filter. Some of the air flows around the mesh. But for the vapor particles that hit fibers in the mesh, the droplet is removed from the air stream.

Direct interception is when a particle, in this case a droplet in a gas stream, attaches to a fiber in the mesh filter. As a droplet moves in the air flow, if it’s distance to a fiber is less than its diameter, it will be intercepted by the fiber and attach to the filter fiber.

In cases where the air flow is faster, or the droplets are larger, the efficiency of the filtering mechanism becomes greater. As droplets attach to the fibers, the fiber effectively has a greater reach, and more droplets are impacted or intercepted, removing them from the air flow.

When the air flow is slower, or the particles are much smaller, Brownian diffusion comes into play. Brownian motion is when particles in a flow of air or liquid have random motion (not in a straight line) due to impact from smaller particles and molecules.

The more vapor particles attach to a filter, the greater the filtering efficiency, but the greater the pressure drop.

Most mesh pad filters are several inches thick, usually about six inches.

In many applications, like in oil and petroleum mist collection, there will sometimes be multiple layers of wire mesh filters. This allows for successive collection of droplets from the gas stream with different filter sizes.

Advantages and disadvantages of mesh mist eliminators

The main advantages of mesh pad mist eliminators: they are relatively inexpensive, and efficient at removing particles down to a certain size.

Some disadvantages: efficiency decreases as the droplet size increases, the pressure drop is greater than other mist filtration methods.