*Crude oil & Fractional Distillation* The various components of crude oil have different sizes, weights and boiling temperatures; so, the first step is to separate these components. Because they have different boiling temperatures, they can be separated easily by a process called fractional distillation.The Separation process in which the volatile components (having different boiling points) of a mixture (such as crude oil) are split from one another by heating the mixture in a column and collec