The knitted wire mesh Demister Mist Eliminator is made in one piece construction for small diameters or in sections for accessibility through access manways in vessels and columns. They are also made in other configurations like square, rectangular and doughnut shapes. The Demisters are secured to vessel or columns with wall cleats or annular support rings and held in place with tie wire or clamps as a standard.
The Wire Mesh Mist Eliminators are placed against horizontal or vertical Gas flows. Vertical flows are the most common installed type. Where mist laden gas vapor passes through the layers of knitted wire mesh pad, Inertia driven particles get onto the wire targets away from the free flowing gas vapor forming bigger particles. These particles, in turn, are a push even higher before they fall due to gravitational forces. With properly designed mesh pad liquids are momentarily held in the lower bottom sections of the mesh pad thus washing the gas constantly and allowing clean vapor to exit the mist eliminator thus achieving the elimination of carry-over of liquid particles as desired.
The common liquid carried over problems can be eliminated with a properly designed and installed Newwin Wire Mesh Mist Eliminator. The allowable vapor velocity through the Demister Pad is influenced by various operational parameters ie. Vapor/Gas Velocity, Density, Liquid Density, Surface Tension, Viscosity and physical properties of the Knitted Wire Mesh Demister Pad including wire diameters and wire geometry and densities of mesh have detrimental effects on the expected performance of the mist eliminator. The vapor density and the liquid density may be used to approximate the allowable/optimum vapor velocity.
Knitted Wire Mesh Demister Pads operate between 30 -110% of the design capacity and are able to handle even dissolved solids in the carry over liquids. This being a reality with Mesh Type N931 and sometimes with spray washing if required.