Why do we use fractional distillation for Crude oil?
Crude oil is usually no runny enough or ignited easily enough to be useful as a fuel.The different hydrocarbons it contains must be separated into simpler, more useful mixtures.
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Where does the industrial fractional distillation crude oil happens?
In a tall metal fractionating column
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Why is Crude oil heated strongly?
To evaporate it and hot vapours are piped into the bottom of the column
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Where is it the hottest in the column?
At the bottom
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Where is it the coldest in the column?
At the top
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What happens as the vapour rise?
It cools down
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When does the vapour condense?
When they reach the part of the column that is cool enough
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Where does the liquid fall?
Into a tray and is piped away
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What happens with the vapour that has the lowest melting point?
They do not condense at all and leave at the top as a mixture of gases
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What is the separated liquid and gases called?
Fractions because they are only parts of the original crude oil
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Instead of a pure of hydrocarbons what are they?
A mixture of hydrocarbons
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What are the similar properties do all the fractions hydrocarbons have?
Number of carbon hydrogen atoms and boiling points
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Which hydrocarbons have the lowest viscosity?
The hydrocarbon in the gases faction and they are the easiest to ignite making them suitable for for use of fuels
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Why is bitumen solid, and water proof at solid room temperature ?
This makes it suitable for surfacing roads and roofs
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Card 2
Front
Where does the industrial fractional distillation crude oil happens?
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