The longest hydrocarbons have very high boiling points. They leave the column as a hot liquid called bitumen. Shorter hydrocarbon molecules have weaker intermolecular forces and lower boiling points.

This results in a multiple-cascade design of an inferred ... crude from the crude distillation unit (CDU) has a heater skin temperature constraint. Unless the two columns are controlled as part of one ...

In this video, Fran Scott explains fractional distillation - the separation of crude oil into fractions. Crude oil is a finite resource; petrol and other fuels are produced from it using ...