|Example: Large scale fractionating still|
Eventually, at steady conditions, the vapor and the liquid on the trays or plates reach and equilibrium and only the most volatile vapors will stay in gas form all the way to the top of the column, where it is condensed and turned back into its liquid state. The more trays or plates, the more the separation can be enhanced.
Fractionating columns are widely used in the industrial industry, where a large amount of liquid can be distilled and processed at a time. Such as, petrol chemical, coal tar, petroleum, natural gas and solvents.