Active Member
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[China]
Contact name:Amy
Anping Yuanqiao Petrochemical Equipment Co., Ltd |
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There are many types of mesh pad demisters, including flat type, oblique type, etc.. Usually the mesh pad thickness for flat type demister is 100mm or 150mm. With simple structure, it suits for low velocity, low mist rate gas flow. Re-entrainment easily happen when the gas velocity is too high. While the oblique type (sometimes also shown as wave shape demister) has flow guiding effect on the captured liquid droplet, leaving less liquid droplets on the downside of the mesh pad. So the oblique type demister has less resistance to the passing gas flow, and is a little harder to cause re-entrainment. It allows somehow higher velocity and mist content.
2. Design of Wire Mesh Demister.
2.1General
A.Size, style, thickness, configuration, and materials are specified in XXX Project Specification – Vessels.
B.Mist Eliminator styles are defined as follows:
C.Style G is a mesh blanket having a variable knitted density. The vapor inlet section is the least dense and the outlet section the densest. Typical inlet/outlet knitted mesh densities are 5 lb/ft3 (80.1) and 9 lb/ft3 (144.2). The customer can require variable density blankets having slightly different knitted densities and wire diameters.
Style V is to be determined by the vendor, based on the process conditions provided by customer. Vendor may determine the mist eliminator type best suited to meet the mist elimination requirement. The selected style may include a mesh pad, vane or a combination of mesh & vanes. The mist eliminator may be oriented vertically, horizontally or at an angle determined by the vendor. A single pad of variable knitted density may also be applied.
3. Demister Inquiry Table if Calculation Suggestions and Service are needed
| Please State your demister / mist eliminator application | |||||
| Operating data | |||||
| Gas | Max. gas volume flow (operating conditions) | M3/h | |||
| Gas density (operating condistions) | Kg/m3 | ||||
| Operating pressure | Bar (a) | ||||
| Operating temperature | ℃ | ||||
| Liquid | Liquid content | Kg/h | |||
| Liquid density | Kg/m3 | ||||
| Dynamic viscosity of the liquid | mPas | ||||
| Geometrical data | |||||
| Flow direction | Horizontal | ¨ | |||
| Vertical | ¨ | ||||
| Installed in | Column | ¨ | |||
| Pipe | ¨ | ||||
| Column diameter or dimensions | mm | ||||
| Opening for installation | Manhole | ¨ DN | |||
| Vessel flange | ¨ Size | ||||
| Requirements | |||||
| type of mist eliminator | Wire mesh demister | ||||
| Material | |||||
| Efficiency of separation | % | ||||
| Max. pressure drop | |||||
| Miscellaneous | |||||
4. Features of wire mesh demister
•Light weight
•Easy to install
•No moving parts
•Shipped promptly
•Low pressure drop
•Requires no maintenance
•Fits all process equipment
•Wide variety of materials of construction available
High removal efficiency
No limitation on size or shape.
Easily installed in existing vessels
Little maintenance or service required
Almost no corrosion or temperature limitations
Negligible pressure drop, less than 25mm of water gauge
Tks for your reading ,i hope my introduction can help you to make a decision ,any question ,press the whatsapp ,feel freely let me know
