Fractional distillation of crude oil

Crude oil is a mixture of lots of different hydrocarbons
The substances in crude oil can be separated by the process called FRANCTIONAL DISTILLATION
Coal, crude oil and gas are all fossil fuels
fossil fuels are made from dead plants and animals that are buried for millions of years
This is what happens during fractional distillation
1. The oil is heated until most of its has turned into gas
2. The gasses enter a tall tower called fractionating column
3. In the column its hot at the bottom and gets hotter as you go up the column.
4. Hydrocarbons with high boiling points leave the column near the bottom
You end up with the crude oil mixture separated out into groups of hydrocarbons
These groups are called fractions
Each fractions contains a mixture of hydrocarbons with smaller boiling points
The separated fractions are much more useful than crude oil.

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	Erstellt von Harry Knapaman vor etwa 11 Jahre