How an oil refinery works
Oil refineries play a critical role in processing crude oil into usable products, as the world continues to rely heavily on petroleum for energy and chemical feedstocks. Crude oil, a complex mixture of hydrocarbons, is separated and transformed through processes like distillation based on the boiling points of its components. Refineries are large-scale industrial facilities that handle hundreds of thousands of barrels daily, supporting global demand for fuels and petrochemicals.
- ▪The world consumes over 100 million barrels of oil per day, with oil accounting for 30% of global energy use as of 2023.
- ▪Crude oil is composed of thousands of hydrocarbons, ranging from light molecules like propane to heavy ones like asphaltenes.
- ▪Different types of crude oil are classified as light or heavy and sweet or sour based on molecular composition and sulfur content.
- ▪Refineries use distillation to separate crude oil components by their boiling points, a key step in producing usable fuels and chemicals.
- ▪Gasoline is a mixture of hydrocarbons with 4 to 12 carbon atoms and a boiling range of 122 to 158 degrees Fahrenheit.
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How an Oil Refinery WorksBrian PotterApr 30, 2026238312ShareIndia’s Jamnagar refinery, via Wikipedia.Though wind and solar continue to carve out larger and larger shares of world energy supply, the modern world still runs on petroleum, and will continue to do so for the foreseeable future. The world consumes over 100 million barrels of oil a day. As of 2023, oil was responsible for 30% of all energy use worldwide, higher than any other energy source (though its share has been gradually falling). In chemical manufacturing, petroleum is even more critical: an astounding 90% of chemical feedstocks are derived from oil or gas.
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