Vane type demister, comprising of a group of vanes closely arranged together to form a wave or saw-shaped pathway for the gas flow, separates liquid impurities from gas streams. Changes in flow direction causes liquid droplets contained in the gaseous stream to impact the vanes, forming bigger droplets which are discharged through gravity. It is recommended not to use demisters to process dirty medium as it may cause blockage, reducing filtering efficiency. Demisters can be vertically or horizontally mounted.
Production standard: GB150 or ASME VIII-1
Operating Principle:
When mist passes through a demister, micro particles collide due to momentum and adhere to the surface of the wave-shaped mesh. Due to the inertia of these particles, they coalesce with other particles to form bigger droplets of liquid in the direction of the mesh curvatures. These particles grow in size quickly as surface tension, centrifugal, frictional and adsorption forces work in synergy. Droplets will filter off the wave-shaped mesh when gravitational pull exceed the combined effect of these forces. The multiple turns of the mesh inside the demister increases its efficiency as particles that passed the first curvature collides the next curvature for a repetition of the same process. After passing through the wave-shaped plate demister, the gaseous stream would not contain mist.
Demisting Efficiency:
Vane type demister can remove liquid drops with size of over 10μm with a filtration efficiency of 99 – 99.5%.
Typical Application:
- Separation of gas, liquid and entrainment for saturated steam and secondary steam to improve steam quality.
- Separation of gas and liquid after cooling tower, washing tower and saturation tower to ensure safe and reliable operation of downstream equipment.
- Separation of condensate and mist for cooled compressed gas to prevent blockage and damage to downstream equipment caused by condensate and mist.
- Removal of mist from recycling and purifying device to recycle valuable materials and ensure process indicators compliance.
- Separation of mist in hydrogen/nitrogen compressor to avoid catalyst damage caused by mist.
- Desulfurization and separation of entrainment in coal gas desulfurizing unit.
Vane Packs:
