Demister Pad - Manufacturer and Supplier by LNT Industrial Engineering Services

 


Construction: Demister Pads are essentially porous blankets of carefully knitted wire or synthetic fibers designed and constructed to efficiently abate mist particles. After knitting each layer is corrugated and converted into Pads of different shapes and sizes. The Demister is generally supported by Grids as they are not entirely rigid.

 Efficiency: When properly designed Demister Pads can give Efficiency up to 99.9% with minimal pressure drop. Normally Demister Pads can remove droplets down to 5microns and lower with a free volume of up to 99% and a surface area of up to 1940 m2/m3. Due to high value of free volume the pressure drop across the demister pad is sufficiently low, negligible for most applications.

 

 Function: Demister Pads are installed at some distance above the surface of liquid allows free disengagement of mist droplets and the coarsest particles. The vapour/gas-liquid mixture run at a predetermined velocity through the Demister Pad, the vapour/gas

finds an open path through the mesh easily, but due to greater inertia the droplets and mist impinge on the mesh and gradually increase to a bigger size and fall down due to gravity allowing the vapour/gas to pass freely without any Entrainment from the top of the Demister Pad.

 Column packing: It is used for efficient packing of Distillation columns, which operate at Vacuum or Atmospheric pressure. Column Packing are fabricated by knitting fine wires into a mesh then further crimping the mesh before rolling them for a desired column diameter. Multifilament mesh gives best results due to their capillary action and promotes excellent mixing in vapour stage.

 Advantages of Demister Pads:

 

·      Solves Emission control Problems.

·      Eliminates or reduces damage caused to the equipment due to corrosive liquid droplets.

·      Recovery of valuable liquids.

·      Improves purity of gas/vapour for further processes.

·      Improves overall process economics.

·      Increases process efficiency.


 Materials of Construction: Demister Pads are made of a variety of Materials as per application demands. A few materials of construction would be synthetic fibers, copper, aluminium, Stainless Steel 304, Stainless Steel 316, Monel, Nickel, Brass, Phosphor Bronze, Carbon Steel, etc,. for different applications like corrosive services, nitric acids, water solutions, Freon, alcohols, fatty acids, corrosive chemicals, food products, hydrocarbons, caustic soda, dilute acids etc,.

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