Tray Column Design: valve
Distillation and absorption tray column design parameters — sieve, valve, bubble cap, dual-flow, baffle, and chimney tray geometry, hydraulics, flood limits, and turndown ratios; plus system derating factors, downcomer hydraulics, downcomer residence times, typical theoretical stages by separation system, and Murphree tray efficiency ranges
| tray type | approach to flood pct (%) | capacity factor ft s (ft/s) | downcomer area frac max (dimensionless) | downcomer area frac min (dimensionless) | hole area to active area max (dimensionless) | hole area to active area min (dimensionless) | hole dia in max (in) | hole dia in min (in) | hole dia typical in (in) | system factor (dimensionless) | tray spacing in max (in) | tray spacing in min (in) | turndown ratio (dimensionless) | weir height in max (in) | weir height in min (in) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| valve | 75 | 1.1 | 0.15 | 0.07 | 0.14 | 0.08 | 0.1875 | 0.1875 | 0.1875 | 1 | 24 | 18 | 4 | 2.5 | 1.5 |
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