Co-knitmesh Demister

CO-KNITMESH DEMISTER :

• Wire diameter, size of wire loops and amplitude of crimp are the principal variables that can be controlled to produce different mesh densities and specific surface areas. Mesh pads are almost always installed in the horizontal position with gas flowing vertically upwards through the pad.


• A relatively recent development in the design of mesh pads is the composite pad.  The mesh is a combination of one or more materials, often a metal alloy and a ultra-high-efficiency fluorocarbon monofilament.  The composite-knit or co-knit provides high surface area and void volume, and increased mist removal efficiency in the 1-3 micron particle size range which were not previously capture with older designs.
  

Design and Sizing :

• The design velocity for a given application is the value that produces the best performance in terms of collection efficiency and avoiding flooding and re-entrainment.


• A mesh pad can operate effectively over a range of 30 to 120% of the design gas velocity.  A value representing 100% of the calculated design gas velocity can be used if there is no requirement to handle increased gas flows in the future.  A lower gas velocity may be selected if the pad is being sized for future expansion of capacity.


• Once the design velocity is calculated a value the surface area of the pad can easily be determined by dividing the volumetric gas flow by the selected gas velocity.

 USES : Used in Petrochemical plant and sulphuric acid plant, Fertilizer Plant.