Vane Inlet Devices (VID)
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As with a packed or tray towers, the importance of vapour distribution to the mesh or vane demister cannot be over-stressed.
To achieve the maximum performance from the demister unit, the vapour going through it must be distributed evenly. Mal-distribution will result in poor capacity and efficiency performance.
Where necessary a vane inlet device (VID) should be used offering the following advantages:
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- Eliminates high liquid loads on the demister
- Dissipates high inlet gas velocity (momentum)
- Prevents re-entrainment of liquid droplets from the liquid held in the column sump
- Provides a uniform gas distribution to the demister