Episode 50 · Engineering Deep Dives
Distillation Columns: How Plants Split Mixtures
A flooded aromatics splitter sends fictional process engineer Mira Hensley into the physics of separation. Explore vapour-liquid equilibrium, relative volatility, trays and packing, reflux, feed-stage placement, reboilers, condensers and pressure. The episode connects azeotropes and heat integration to the operating problems of flooding, weeping and foaming. Story characters, facilities and story figures are fictional and illustrative.
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See it work
Explore the working principle
Inside this episode
- Cold open: the column that would not settle
- Vapour-liquid equilibrium and relative volatility
- The column as a cascade of stages
- Trays versus packing
- McCabe-Thiele in plain language
- Reflux and energy
- Feed condition and feed stage
- Reboiler and condenser
- Pressure and vacuum columns
- Azeotropes and how industry breaks them
- Heat integration and multi-column sequences
- Control, flooding, weeping and foaming
- Closing: what the column teaches
Production credits & AI disclosure
Scripts generated with Claude Opus. Synthetic narration generated with Edge TTS. Reviewed, listened to, and approved by Sankalp Thakur.