C1.4 Crude oil and fuels
- Created by: frankie306
- Created on: 28-05-15 10:42
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- C1.4 Crude oil and fuels
- Fuel from crude oil
- crude oil
- mixture of different compounds
- many are hydrocarbons
- fractions
- substances with similar boiling points
- distillation
- separates crude oil
- alkanes
- saturated
- contain as many hydrogen atoms as possible
- CnH(2n+2)
- saturated
- crude oil
- Fractional distillation
- short chain molecule
- flammable
- low boiling point
- easily turns into a gas
- volatile
- low viscosity - runny
- long chain molecule
- high viscosity - thick
- high boiling point
- smoky flame when burnt
- properties of each fraction depend on size of molecules
- temp decreases up the column
- residue = thick sticky mixture of long chain hydrocarbons
- diesel, kerosene, gasoline, petroleum gas
- short chain molecule
- Burning Fuels
- carbon dioxide and water is produced
- sulfur impurities in fuels burn
- forms sulfur dioxide
- acid rain
- changing conditions can change products
- carbon monoxide formed
- insufficient oxygen
- Nitrogen oxide
- high temps
- Cleaner fuels
- sulfur dioxide + nitrogen oxide
- dissolve in droplets of water to form acid rain
- CO2
- greenhouse gas
- sulfur dioxide + nitrogen oxide
- Alternative fuels
- Biofuels
- made from plant / animal rpoducts
- biodiesel
- oils from plants
- less harmful
- areas of land could be used instead for farming
- carbon neutral
- Ethanol
- fermentation of sugar
- Hydrogen
- burns well
- clean flame
- from water through electrolysis
- Biofuels
- Fuel from crude oil
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