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  Demister Pad
Demister Pads are porous blankets of wire or plastic knitted mesh, designed and constructed for efficient and economical removal of entrained liquid droplets from vapour streams. The pads can be fabricated in any desired size and shape.

Normally demister pad is installed in such a way that vapour flow is upward. When vapour and entrained liquid droplets pass through a demister pad, the vapour passes easily but liquid droplets, due to their greater inertia, cannot make the necessary sharp turns and are thrown into contact with the wire surfaces and briefly held there.

As more droplets enter the pad and collect on the wires, they grow in size, run down the wire to the bottom surface of the mesh seperator and fall from the unit. Over head vapour is now free of entrained liquid. Demister pad prevent loss of valuable product and produces high quality condensate suitable for use a boiler's feed water. The applications are in the refinery vacuum towers, evaporators, refinery lube towers, steam drums, absorbers, scrubbers, seperator vessel and knock out drums. The allowable velocity depends on liquid density, surface tension, droplet size and quantity of entrainment. The pressure drop is negligible and the efficiency is high depending on vapour and liquid loading.

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