SS 304 vane mist eliminator any shape and size as per order
1. How does vane mist eliminator works?
when the gas containing mist flows through the vane pack mist eliminator at a certain speed, because of the inertial impact of the gas, the mist and wave plate collide and are attached to the wave plate surface. The diffusion of the mist on the surface of the corrugated plate and the gravity settlement of the mist cause the mist to form large droplets and move forward with the air flow to the turning of the corrugated plate. Because of the centrifugal force of the steering and its friction with the corrugated plate, the adsorption and the surface tension of the liquid, the droplets become larger and larger until the concentrated droplets are larger than the gravity generated by themselves, which exceeds the lifting force of the gas and the surface tension of the liquid. When the force is applied, the droplets are separated from the surface of the wave plate. The multi fold structure of the wave plate of the mist eliminator increases the chance of catching and gathering the mist, and the undeleted mist will catch and gather at the next turn through the same function, so it will work repeatedly, thus greatly improving the efficiency of mist eliminator. After the gas passes through the chevron mist eliminator, there is basically no mist.
2. Vane mist eliminator design parameters,
| No. |
Item |
Unit |
Data |
| 1 |
Absorber (case) |
|
|
| 1.1 |
Diameter of front passage of demister |
m |
Φ2.6 |
| 1.2 |
Raw flue gas flow of single tower (wet) |
m3/h |
31000 |
| 1.3 |
Net flue gas flow of single tower (wet) |
Nm3/h |
32500 |
| 1.4 |
Net flue gas temperature |
ºC |
45 |
| 1.5 |
Average velocity of flue gas before demister |
m/s |
≤2 |
| 1.6 |
Spray mode of absorption tower |
downward |
downward |
| 1.7 |
Absorber nozzle type |
|
Hollow cone |
| 1.8 |
Average droplet size(D32) |
μm |
2000 |
| 1.9 |
Flue gas temperature: normal operation / design |
ºC |
45/80 |
| 1.10 |
Cl-concentration |
ppm |
<40000 |
| 2 |
Demister data |
|
|
| 2.1 |
First stage vane plate demister |
|
|
| 2.1.1 |
Type |
|
|
| 2.1.2 |
Material |
|
|
| 2.1.3 |
Weight |
kg |
|
| 2.2 |
Second stage vane plate demister |
|
|
| 2.2.1 |
Type |
|
|
| 2.2.2 |
Material |
|
|
| 2.2.3 |
Weight |
kg |
|
| 2.3 |
Liquid holding capacity of flue gas at demister outlet (dry, standard state) |
mg/Nm3 |
|
| 2.4 |
Pressure drop (two stage plate) |
Pa |
<150 |
| 2.5 |
Material of demister |
|
|
| 2.6 |
Spray pipe material |
|
|
| 2.7 |
Total weight of spray pipe |
kg |
|
| 2.8 |
Nozzle material |
|
|
| 2.9 |
Nozzle pressure drop |
bar |
|
| 2.10 |
Number of nozzles |
pc |
|
| 2.11 |
Nozzle unit weight |
kg |
|
| 3 |
Flushing water volume |
Fill in by 100% |
|
| 3.1 |
Upper part of the first stage |
m3/(h·m2) |
|
| 3.2 |
Lower part of the first stage |
m3/(h·m2) |
|
| 3.3 |
Upper part of the second stage |
m3/(h·m2) |
|
| 3.4 |
Lower part of the second stage |
m3/(h·m2) |
|
3. Applications of vane pack mist eliminator
Vane mist eliminator is widely used in various applications to separate liquid droplets from gas streams, in all applications where a contact between liquid and flowing gas, the vane pack demister can supply a good performance. Additionally, tiny mist droplets can be carried away with the gas.
It is widely used in the foaming system and high liquid viscosity system in refineries, chemicals, petrochemicals, pharmaceuticals, dyes and intermediates, aromatics and other process industries.
4. Advantages of vane pack demister / mist eliminator
1. Lower pressure drop.
2. Resistance to fouling.
3. High tensile strength.
4. Durable and long service life.
5. Custom-made design available.
6. High filtering and separating efficiency.
7. High capacity. It has 30% to 100% more capacity than the wire mesh mist eliminator.
5. Vane mist eliminator manufacturing ideas,
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