|Application:||Drying Tower||Material:||PP, Metal, As Per Order|
|Shape:||Any Shape Needed||Mesh Density:||170, Or As Per Requirement|
|Mesh Thickness:||As Per Customer Design||Wire Size:||Customer Order|
wire mesh pad,
mesh pad demister
Drying column chemical tower important internal wire mesh demister
Wire Mesh Demister Mist Eliminators Standard Specification
1.General introduction of wire mesh demister
Demister pads or Mist eliminators are porous blankets of metal or plastic knitted wire mesh, designed and constructed for the efficient, economical removal of entrained liquid droplets from vapor streams. Demister Pads can be fabricated in any required size and shape and may be installed in new or existing process vessels.
2. How Wire Mesh Demister Works?
When vapor and entrained liquid droplets pass through a mist eliminator, the vapor moves freely through the mesh pad but the liquid droplets, due to their greater inertia, cannot make the necessary sharp turns and as a result are thrown into contact with the wire surfaces and briefly held there. As more droplets enter the pad and collect on the wires, they grow in size, run down the wire to the bottom surface of the mesh separator and fall from the unit. Overhead vapor is now free of entrained liquid.
3.Wire Mesh Materials
3.1Metallic Mesh Pads
Materials for metallic Mist Eliminators are as per customer need. Type 304 or Type 316 mesh pads can be in accordance with ASTM A-478. Monel mesh pads can be in accordance with ASTM B-164.
3.2Non-metallic Mist Eliminators
Non-metallic Mist Eliminators shall be PTFE or polypropylene as specified in by customer.
A.Supports welded to the vessel shall be the same material as the shell. Where the shell is lined, supports welded to the lining shall be the same material as the lining.
B.Supports not welded to the shell (e.g. beams) shall be the same material as the Mist Eliminator.
A.Metallic grids can be the same material as the mesh pad
B.For non-metallic mesh pads, the grids shall be carbon steel, coated with the same material as the mesh pad.
A.For metallic mesh pads the wire ties or other fastening devices shall be of the same material as the Mist Eliminator.For non-metallic mesh pads, the grids shall be carbon steel, coated with the same material as the mesh pad.
B.For non-metallic mesh pads the wire ties can be the same material as the mesh pad.
4. Demister Inquiry Table if Calculation Suggestions and Service are needed
|Please State your demister / mist eliminator application|
|Gas||Max. gas volume flow (operating conditions)||M3/h|
|Gas density (operating condistions)||Kg/m3|
|Operating pressure||Bar (a)|
|Dynamic viscosity of the liquid||mPas|
|Column diameter or dimensions||mm|
|Opening for installation||Manhole||¨ DN|
|Vessel flange||¨ Size|
|type of mist eliminator||Wire mesh demister|
|Efficiency of separation||%|
|Max. pressure drop|
Please pay attention to the Unit when refering to this sheet.
5. What can Hualai factory do for you in the wire mesh demister?
1. Hualai demister is tailor made to suit for specific vessel dimensions and configuration.
2. Hualai provides wide variety of material to suit for even the most corrosive process environments.
3. Hualai factory can supplies either mesh pad only, or complete demister with top and bottom supporting grids for direct installation in vessels.
4. Sectional construction for easy handling and access through man ways.
5. Complete accessory pack including support ring and beam can be provided when required.
Wire Mesh Demister workshop:
Contact Person: AnnLi