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Wire Gauze Type Packing

Invented in early 1960’s, Wire Gauze Structured Packing in particular fulfils the special requirements demanded by the fractionation of thermally instable substances under vacuum conditions. This is achieved by a special wire mesh with a capillary effect. The wire mesh has the form of corrugated lamellae and builds up the packing layers. With its low pressure drop and its high fractionation efficiency this type of packing is also very suitable for very low liquid loads.


Features
  • High number of theoretical stages per unit height
  • Pressure drop per theoretical stage 0.1– 0.5 mbar
  • Most economical load range: F factor 1-2.5 Pa1/2
  • Minimum liquid load approx. 0.05 m3/m2h
  • Small hold-up
Applications
  • Large number of theoretical stages
  • Vacuum from 1 mbar to atmospheric pressure
  • Where minimum pressure drop per theoretical stage is important
Product applications
  • Monomers from plastics (MDI, DMT, etc.)
  • Fatty acids, fatty alcohols, fatty acid esters
  • Mono, di, tri, and tetraethylene glycols
  • Fine chemicals
Special features
  • Maximum number of theoretical stages per meter
  • Most economical load range: F factor 1.5 – 2 Pa1/2
  • Minimum liquid load approx. 0.05 m3/m2h
  • Small hold-up
Applications
  • For a very large number of theoretical stages
  • Vacuum from 1 mbar to atmospheric pressure
  • Small overall height
  • Batch and continuous columns
  • Pilot and laboratory columns (reliable scale up)
Limited suitability for
  • Fouling substances
  • Non wetting liquids
Product applications
  • Pharmaceutical products (vitamins, etc.)
  • Fragrances (menthol, geraniol, etc.)
  • Separation of isomers
  • Stainless steel 410S, 304,304L, 316, 316L, 316Ti, 904L.
  • Hastelloy C4, C22, C276, etc
  • Aluminum, Copper, Bronze, Titanium, Monel
  • Plastic made of polypropylene/polyacrylonitrile mixture (PP/PAN)
  • Further materials are available on request.

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