Experiments on oil in a distillation tower

Conditions for mass and heat transfer: 1. A place for gas-liquid exchange is required; 2. There must be a temperature difference and a concentration difference between the gas and liquid phases; 3. Under a certain pressure, each tray in the tower can be considered as a distillation unit. As the gas at the bottom passes through the trays, it forms a foam layer of a certain height above the liquid layer. During normal operation, a state of material balance is achieved, and the height of this foam layer remains constant. All gas must pass through this foam layer, undergoing a transformation from gas to bubbles and then back to gas. The exchange of substances between the gas and liquid phases takes place on the surface of each bubble in the foam layer. When the bubbles burst, the gas and the separated liquid indicate that the gas-liquid exchange is complete. The result of this exchange is that some of the less volatile components in the gas phase enter the liquid phase, and the heat released during condensation in the gas phase is transferred to the liquid phase, causing part of the liquid to vaporize and allowing the more volatile components in the liquid phase to enter the gas phase. The gas phase after the exchange enters the upper trays after separation, while the liquid phase flows to the lower trays for further exchange. Above the feed inlet of the tower, as long as there are a sufficient number of tray levels, the volatile components in the gas leaving the top of the tower can achieve the desired purity. Similarly, if a reboiler is installed at the bottom of the column to provide sufficient vapor phase, and there are enough trays below the feed inlet, high-purity non-volatile components can be obtained at the bottom of the column.

Reply to 2# Revolution: What you mentioned seems to be something different from what I asked