National Standard for Wire Mesh Defoamers

National Standards for Wire Mesh Demisters
Wire mesh demisters can be made of domestically produced or imported high-quality materials: Q235, 304, 304L, 321, 316L, F46, NS-80, nickel wire, titanium wire and alloys.
HG/T21618-1998 is a revision of the original Ministry of Industry standards (HG5-1404-81, HG5-1405-81, HG5-1406-81) based on the actual use experience of wire mesh demisters and the advanced technology of the introduced devices. The original three standards are merged into one standard, which is only divided into top-loading and bottom-loading types.
Model specifications: top-loading, bottom-loading, DG200-DG6400 and various non-standard wire mesh demisters (demisters).
 
  Comparison between the new standard and the original standard
1. The original three standards are merged into one standard for easy selection.
2. The diameter range and specifications of the demisters are adjusted, and the nominal diameter specifications are appropriately dense.
3. The wire types used in the demister are added, and the basic parameters of the wire mesh are given.
4. The material varieties of wire mesh and grille are added.
5. The process calculation content of the demister is added.
The drawer-type demister adopts HG and T21586-98 standards. It is composed of several wire mesh demister elements and inserted into the tower body through guide rails. The characteristics of this demister are operation and maintenance. The demister elements can be replaced outside the tower body. It is suitable for absorption towers and drying towers of sulfuric acid plants.