Custom Square Wire Mesh Demister Pad , Calculation Service Design
Support
The wire mesh demister is designed to collect liquid particles contained in the vapour
phase after boiling, vacuum evaporation or bubbling process.
Small droplets in the gas contact the wide surface of the filaments
of the mesh pad demister, gradually grow into large liquid droplets
and flow and drop by a special structure accelerating the
coalescing of the liquid droplets. The mesh pad of the demister is
highly porous, so the vapour gas passes through the demister
without hindrance, leaving only pure gas.
The process is not a type of filtering as the hole size of the knit
mesh is not specially related to the size of the liquid droplets.
This mist elimination is caused by the collision and sudden change
resulting from the flowing speed of the small liquid droplets, and
the coalescing of the liquid drips and gravity cause their descent.
This is a process combing mechanical and physical phenomenon
Wire Mesh Demister Specifications in this case
| Item | Value | Unit |
| Material | SS316L | / |
| Shape & Size | 2800*3800 | mm |
| Mesh Thickness | 100 | mm |
| Demsiter Height | 150 | mm |
| Wire Diameter | 0.23 | mm |
| Mesh Density | 168 | kg/m3 |
| Void Fraction | 0.979 | / |
| Specific Area | 366 | m2/m3 |
| Grids | 25*3 flat bar /
Φ6 rod | mm |
Advantages of wire mesh demister
1. Reduce Pollution
Improve process efficiency by reducing product carryover in
chemical plants thus saving the planet, one droplet at a time.
2. Flexible
Made to any size or shape and with the material and wire diameters
that customers require.
3. Specialist Support
Specialist support through the design and development processes.
knowledge in calculation supporting:
Gas velocity of Valor mesh demister pad
Max gas velocity: uf=K[(ρL-ρG)/ρG]1/2 m/s
ρL——density of liquid drop Kg/m3
ρG——density of gas before demister Kg/m3
K——Gas-liquid separate mesh constant
Recommended operation gas velocity:ug=0.50uf---0.80uf m/s
Wire mesh demister pad applications:
(1) Low pressure rectifying column:
The mesh pad demister increases the purification ratio, that
enables a deep cut in residue oil to improve the quality of gas
oil. The improved gas oil contains less carbon, asphalt and
corrosive metals, increases decomposition capacity by the residue
load in the regenerator, and maintains a higher contact reaction to
produce a higher gasoline yield ratio.
(2) Lubricant refinery tower:
The mesh demister increases production volume and yield ratio and
improves production quality. As a result, the refining of solvent
and white clay is practically rationalized.
(3) Distilling equipment:
Improved performance can be obtained in equipment for processing
asphalt, organic intermediate substances, fine chemicals, vegetable
oil, tall oil, fatty acid, glycerin, lubricant, benzene and
propane.
(4) Evaporator:
The mesh pad demister prevents carryover of valuable products, can
be appropriately used for boiler feed water or processes, and
produces high quality condensate.
(5) Steam drum:
Demister produces clean and dry solids of less than 0.5ppm and
prevents water from flowing back into the turbine.
(6) Absorption tower:
Effective for completely removing all types of flying and
accompanying liquids such as absorption oil, glycol and amine
dissolution and discharges clean and dry gas. This also improves
process efficiency.
(7) Knockout drum
(8) Scrapper thin film evaporator
(9) Separator container and others
Package & shipping of bracketed wire mesh demister:
