Hydrocarbons and crude oil

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Presentation transcript:

Hydrocarbons and crude oil Crude oil is a mixture of HYDROCARBONS (compounds made up of carbon and hydrogen). Some examples: Increasing length Longer chains mean… Less ability to flow Less flammable Less volatile Higher boiling point C H Ethane Butane C H

Fractional Distillation Crude oil can be separated by fractional distillation. The oil is evaporated and the hydrocarbon chains of different lengths condense at different temperatures: Fractions with low boiling points condense at the top Fractions with high boiling points condense at the bottom