Here's how it works:
1. Heating the crude oil: Crude oil is heated to a high temperature, causing it to vaporize.
2. Fractional distillation column: The vapors then enter a tall column called a fractional distillation column. This column is filled with trays or packing materials.
3. Different boiling points: Different components of crude oil have different boiling points. As the vapors rise through the column, they cool down.
4. Condensation: When a vapor reaches a temperature below its boiling point, it condenses and is collected.
5. Separation: The fractions are collected at different heights in the column, with the lighter, more volatile components (lower boiling points) condensing higher up, while the heavier, less volatile components (higher boiling points) condense lower down.
Other physical properties involved:
* Density: Heavier components tend to sink to the bottom of the column.
* Solubility: Some components might be more soluble in certain solvents, allowing for further separation.
While these other properties play a role, boiling point is the primary physical property exploited for separating the various components of crude oil.
