DEMISTER Wire Mesh

Knitted wire mesh demisters are entrainment separations device also known as crinkled wire mesh screens or Mist Mats for gas/liquid separations.

 

Knitted wire mesh Demisters are made from single wire knitted to form interlocking loops to form a sock. The knitted sock is flattened and the double layer is crimp to required heights and layers of these are layered to form a standard thickness of 100 or 150mm thickness or 300 to 600mm thicker as required in some process applications.

 

These knitted layers form the mesh pad. These are resilient and flexible and yet offer a high surface area due to the diameters also high void volume. Metal Wires of Stainless Steels or High Nickel or Exotic Alloys are used ranging from 0.10mm to 0.28mm diameters. Pressure drop for a knitted Wire mesh demister is normally about 2 mm to a maximum of 25mm H₂0. Wires used are clean and bright annealed to ASTM standards providing for rapid liquid drainage and chemical resistance during process operations. Our stocks of wires and flat bars and round bars are from known and reputed mills and randomly batch tested by us to verify chemical and physical properties as a standard practice.  Knitted wire mesh Demisters are also made from fluoropolymers and thermoplastics and glass fibers. These are pleated and sometimes even co-knitted with metal wires and crimped to give extremely high surface areas for enhanced performance on collection efficiencies.

 

The knitted wire mesh pad layers are held in place by the grids, normally made of flat bars of 25mm width and 3 or 6mm thickness and resistance welded with round bars of 6mm diameters. These grids have high percentage open areas and enhance the drainage of buildup liquids in operations. Top and bottom grids are welded to give the knitted Mesh pad strength and rigidity to span across supports.

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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 commonly used installation 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 and form 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.

 

Knitted Wire Mesh Demisters 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 coarse mesh design and sometimes with spray washing if required.

Newwin - Wire Mesh Mist Eliminators - Demister

 

Construction Materials

• Stainless steels, duplex steel

• Alloy C276, 400, 625, 825, 20, etc...

• Plastics (PP, FEP, ETFE, ECTFE)

• Fibrous components (PTFE, Polyester, Glass fibers)

 
 

Characteristics

• Separation of the droplets by impingement on the wires

• Multiple layers of knitted mesh

• Dense packing presenting a large surface area

• Supplied complete with rigid open area support grids

• Made out of sections

• Secured with tie-wire, bolting, clamps,etc

Typical Applications

• Separators

• Scrubbing systems and absorbers

• Glycol dehydration

• Sulphuric acid drying towers

• Sulphur condensers

• Steam drums

• MSF/MED desalination

 

 

Benefits

• High collection effi ciency (100% of 2 - 10 microns in diameter)

• Low pressure drop

• Easy to install

• Low installed cost

• Fast delivery and service

• Available in almost any size or shape



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Industries We Serve

  • Petrochemical
  • Oil & Gas
  • Environmental
  • Sulphuric Acid
  • Fine Chemicals
  • Fertilizers
  • Metallurgical
  • Chlorine
  • Oil Refinery
  • Environmental Control
  • Pulp & Paper