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Fractional Distillation
Crude oil is a mixture of hydrocarbons and extracted from oil wells
METHOD
The oil is firstly heated causing it to boil then turn into a gaseous mixture, as the vapour rises in the fractionating column.
As it cools, the chemicals with higher boiling points will be first to condense
The condensing liquid is extracted from the column
The larger the molecule is the higher the boiling point it will have

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-fractional distillation
-crude oil is a mixture of hydrocarbons at different lengths. hydrocarbons consist of only hydrogen and carbon
-as you go up the column, the temperature decreases
-crude oil is heated and the hydrocarbons with more chains have higher boiling points because more energy is needed to boil them and they will leave at the bottom of the column.

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- Fractional distillation
-Crude oil is a mixture of hydrocarbons with different length chains.
-Crude oil is separated in a fractional distillation column. The crude oil is heated so it becomes a vapour. The hydrocarbons with less chains have a lower boiling point and exit the distillation column at the top whereas the hydrocarbons with higher amount of chains have a higher boiling point as more energy is needed to boil them and exit the distillation column at the bottom.

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Fractional distillation is the separation of a liquid mixture into fractions differing in boiling point. Crude oil is petroleum is it unrefined state. It is made up of hydrocarbons and other naturally occurring resources. To separate the crude oil, it is evaporated and then condensed at different temperatures in the fractionating Column.

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The method for the separation of different hydrocarbons and splits them up into different fuels is called fractional distillation. Crude oil is a mixture of hydrocarbons of different lengths. Fractional distillation is when the crude oil is evaporates and then condenses into different columns. There are different boiling points for certain fuels for example. Fuel oil condenses at 350 degrees. As the crude oil cools the ones with higher boiling points will firstly condense then at various different points the liquid is removed and taken to a container/storage. The larger the molecule the higher its boiling point will be so the molecules will get smaller as you go up because they need less heat to break down.

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fracrional distillation. crude oil is a mix of different hydrocarbon fuels.
heated fuels are put into a fractionating column and they are sperated from there. the ones with the lowest boiling points go up so they are petroleum gases and the lowest boiling points go to lubricating oil with the rest that is not used being bitumen

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Fractional distillation.
Boiling point increases down the scale.
Crude oil is a mixture of hydrocarbon fuels.
The crude oil is heated to a vapour state.

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this process is called fractional distillation. the purpose of the industrial process is to separate out different fractions. crude oil is a mixture of hydrocarbon molecules. in fractional distillation the crude oil is first entered into the pre-heater which boils the crude oil until evaporated in which it then enters the fractional column. As it rises in the column the gas starts to cool at various points the gas starts to condense into a liquid in which it is then extracted from the column. This works since different oils have different boiling points.

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-Separation method is fractional distillation.
-Crude oil is boiled to a gas state.
-Higher boiling points at bottom of fractionating column, lower boiling points at top.
-Column is heated from bottom.
- Crude oil is a mixture of different hydrocarbon fuels (separated by boiling point)
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Crude oil is a mixture of hydrocarbons that was formed over millions of years from the remains of simple marine organisms. Crude oil is heated or boiled to a vapour state. Then piped to the fractionating column in the gaseous state where they condense at different heights in the column and hydrocarbons separate.The fractions at the top have the lowest boiling points, hence fractions at the bottom have the highest boiling point. This is called fractional distillation.

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highest boiling points at the bottom and lowest at the top so the lighter fractions are at the top and the heavier at the bottom. ( owen says it doesn't make sense sozza )
Crude oil is unrefined petroleum containing a combination of different hydrocarbons.
The crude oil is heated or boiled to a vapour state.
Fractional distillation is the separation method.

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The process that is taking place is fractional distillation of crude oil.
Crude oil are molecules of hydrocarbons of different lengths held together by intermolecular forces,which have to be broken for the hydrocarbon to melt or boil.

Crude oil is separated using fractional distillation
The process is as follows:
1. Oil is heated  causing it to boil and turn into a gaseous mixture, and as the vapour rises in the fractioning column it cools.
2. As it cools, the chemicals with higher boiling points will be the first to start to condense.
3. At various points, the condensing liquid is extracted from the column.
4. The larger the molecule is, the higher it’s boiling point will be, so the extracted molecules get smaller as you go up the column.