🏭 Distillation Column Internals – Explained
Distillation column internals are the internal components installed inside a distillation column to facilitate efficient vapor-liquid contact — which is crucial for separating mixtures based on differences in boiling points.
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✅ Main Types of Internals in a Distillation Column
1. Trays (Plates)
Used in tray columns to promote staged vapor-liquid contact.
Types:
Sieve trays – perforated plates, simple and low-cost
Bubble cap trays – caps force vapor through a liquid layer
Valve trays – have moveable valves that open with vapor flow
Functions:
Hold a liquid layer for mass transfer
Allow vapor to bubble
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