What are the 5 main fractions produced from crude oil?
This process separates crude oil into different fractions based on the boiling point of component molecules. The fractions, from highest to lowest boiling point, consist of heavy gas oil, lubricating oil, gas oil and diesel, kerosene, gasoline, naphtha and gas.
What are the fractions of crude oil?
Fractional distillation of crude oil
|Fraction:||No. of carbon atoms:||Colour:|
|Gasoline (petrol)||4 – 12||Colourless to pale yellow|
|Kerosine (paraffin)||11 – 15||Colourless to yellow|
|Diesel oil||15 – 19||Brown|
|Residue lubricating oil heavy fuel oil bitumen||C||Dark brown|
What are fractions in fractional distillation?
Fractional distillation separates a mixture into a number of different parts, called fractions. Each fraction contains hydrocarbon molecules with a similar number of carbon atoms and a similar range of boiling points.
How many fractions crude oil is separated?
Fractions. There are several ways of classifying the useful fractions that are distilled from crude oil. One general way is by dividing into three categories: light, middle, and heavy fractions. Heavier components condense at higher temperatures and are removed at the bottom of the column.
How is crude oil separated into fractions by fractional distillation?
Crude oil is separated by fractional distillation. Crude oil is heated to vaporize the different hydrocarbons in a tank which is cool at the top and hot at the bottom. The vapours then rise and the different hydrocarbons condense at their specific boiling points, allowing them to be separated.
What are most of the fractions obtained from crude oil used for?
The fractions are then further processed to produce fuels and chemical feedstock for the petrochemical industry. These include fuels such as liquefied petroleum gas, petrol, diesel oil, kerosene, heavy fuel oil which are all non-renewable fossil fuels, as is methane from natural gas.
How do you remember the fractions of crude oil?
Crude oil fractions This is because they are only part of the original crude oil. One way to remember the names of the fractions is: Lazy Penguins Keep Drinking Hot Beer.
How is crude oil separated into smaller fractions?
Crude oil is separated into fractions by fractional distillation. The fractions at the top of the fractionating column have lower boiling points than the fractions at the bottom. All of the fractions are processed further in other refining units.
How is crude oil refined by fractional distillation?
Fractional distillation heated crude oil enters a tall fractionating column , which is hot at the bottom and gets cooler towards the top. vapours from the oil rise through the column. vapours condense when they become cool enough. liquids are led out of the column at different heights.
Which fraction of crude oil is most viscous?
So, gasoline is less viscous than kerosene. And kerosene is less viscous than diesel. This means our answer is C. Gasoline, kerosene, diesel oil is the correct order of increasing viscosity for these three crude oil fractions.
Which crude oil fraction is least viscous?