Vane Demister Pad - Metal or Plastic Materials
Vane demister pad, also called vane mist eliminator, chevron demister pad, it consist of several zig-zag chevron blades with certain spacing. The blade profile can be smooth or with hooks. The smooth blade is commonly used for non fouling services and the hook blade can supply greater removal efficiency and capacity.
In the same environments, where the small solid particles presents, vane demister pads are the better choice for liquid and gas separator than the wire mesh demister pads.
In the working principle, the vane demister pads are different from the wire mesh demister pads. Liquid drainage in the vane demister pad occurs outside the gas flow.
Vane mist eliminator is widely used to separate entrained liquid droplets from gas stream, which the liquid droplets are 8 μm or larger. When the gas stream passes through the vane demister pad and change direction, the liquid droplets are unable to change direction as quick as the gas due to their momentum. So the liquid droplets impact on the chevron blade and then coalesce and form large droplets until drain away.
Classification of vane demister pad
According to material. Vane demister pad can be divided into metal vane demister pad and plastic vane demister pad. Vane demister pad can be made of stainless steel, carbon steel and other alloy steel. It has better corrosion and rust resistance than the plastic vane demister pad. Plastic vane demister pad is lightweight but high filtering efficiency for gas and liquid separating.
VDP-01: Metal vane demister pad.
VDP-02: Plastic vane demister pad.
- According to the blade type. The blade of vane demister pad is different. It can be smooth blade for non fouling services and it can also be hook blade to supply greater removal efficiency and capacity.
VDP-03: Smooth blade vane demister pad.
VDP-04: Hook blade vane demister pad.
- According to the passes. The vane demister pad has different passes, commonly, it can be divided into two passes and three passes. The number of passes corresponding to the number of times the gas flow change direction. More the passes, better the separating efficiency. Additional, the vane demister pad can be divided into stream line type and broken line type.
VDP-05: Stream line vane demister pad.
VDP-06: Broken line vane demister pad.
VDP-07: Two passes vane demister pad.
VDP-08: Three passes vane demister pad.
- According to the shape. The vane demister pad can be made into different shapes, for example the round shape and rectangular shape. Additional, the vane demister pad can be integrated, it can also be divided into several parts for easy transporting and installing.
VDP-09: Round shape vane demister pad.
VDP-10: Rectangular shape vane demister pad.
Specifications of vane demister pad
- Material: metal or plastic.
- Plate spacing: 1/2", 3/4", 3/8", 1", 1-1/2", 2" and others.
- Blade height: 5" or 8".
- Profile depth: 1/2" - 3/8".
- Blade thickness: 0.46 mm.
Features of vane demister pad
- High capacity. It can improve 30% to 100% more capacity than the wire mesh demister pad.
- High filtering and separating efficiency.
- Lower pressure drop.
- Durable and long service life.
- High vapor capacity.
- Resistance to fouling.
- High tensile strength.
- Custom-made design available.
Applications of vane demister pad
Vane demister pad 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 demister pad can supply a good performance. Additional, 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.
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