Oil Refinery
In short
An industrial plant that processes crude oil into useful products like petrol, diesel, and heating oil. It uses heat and chemical reactions to separate different components from raw petroleum.
In plain words
Raw oil from the ground is not very useful on its own. A refinery cleans and splits this oil into many different liquids. These liquids power our cars, planes, and homes.
A simple example
A refinery takes in thick, dark crude oil and turns it into the clear petrol you put in your car. It can also produce bitumen for making roads.
Why it matters
Refineries are essential for modern life because they provide the energy needed for transport and heating. They also create the raw materials used to make plastics and chemicals.
Easy to mix up
Do not confuse a refinery with an oil well, which simply extracts the oil from the ground.