Tray Column Design: downcomer_velocity_medium_24 to typical_stages_benzene_diethylbenzene
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 | category | downcomer cl velocity ft s max (ft/s) | downcomer cl velocity ft s min (ft/s) | downcomer residence time s (s) | foaming tendency | separation system | system service | tray spacing in (in) | typical stages (dimensionless) |
|---|---|---|---|---|---|---|---|---|---|
| downcomer_velocity_medium_24 | downcomer_clear_liquid_velocity | 0.5 | 0.4 | — | medium | — | Oil systems; crude oil distillation; absorbers; midpressure (100-300 psia) hydrocarbons | 24 | — |
| downcomer_velocity_high_24 | downcomer_clear_liquid_velocity | 0.25 | 0.2 | — | high | — | Amines; glycerine; glycols; high-pressure (>300 psia) light hydrocarbons | 24 | — |
| downcomer_residence_high | downcomer_residence_time | — | — | 5 | high | — | Mineral oil absorbers | — | — |
| typical_stages_propyne_butadiene | typical_stages | — | — | — | — | Propyne-1-3-butadiene | — | — | 40 |
| typical_stages_benzene_diethylbenzene | typical_stages | — | — | — | — | Benzene-diethyl benzene | — | — | 50 |
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