The crude oil is heated and turned into vapours here, then the fractions cool and condense at different levels , These fuels are for bbqs and the carbon chain length is very small, These carbon chain lengths are very long and are used as bitumen, The top of the column is very cool, The bottom of the column is very hot , The naptha fraction is used in different chemicals, each fraction separates because of a different boiling point .

Fractional distillation

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