crude oil and fuels
- Created by: Ellie cooper
- Created on: 02-12-12 15:57
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- Crude oil and fuels
- Fuels from crude oil
- Crude oil is a mixture of many different compunds
- Distillation can be used to sepearte mixtures of liquids
- Most of the compounds in crude oil are hydrocarbons- they contain only hydrogen and crabon.
- Alkanes are saturated hydrocarbons. They contain as many hydrogen atoms as possible in their molecules
- Fractonal distillation
- Crude oil is seperated into fractions using fractional distillation
- The properties of each fraction depend on the size of the hydrocarbon molecules
- Fractions with lower boiling points are less viscous and burn more easily
- Burning fuels
- Burnimg hydrocarbons in plenty of air produces carbon dioxide and water
- Burning hydrocarbons in limited supply of air may produce sulfur dioxide
- Any sulfur compounds in the fuel burn to produce sulfur dioxide
- Oxides of nitrogen can be formed when fuels burn under extreme conditions
- Cleaner fuels
- Many scientists believe that carbon dioxide from burning fuels causes global warming
- Sulfur dioxide and nitrogen oxides cause acid rain
- Particualtes cause global dimming
- Pollutants can be removed from waste gases after the fuel is burned
- Sulfur can be removed from fuels before they are burned so less sulfur dioxide is given off
- Alternative fuels
- Biodiesel can be made from vegetable oils
- Biofuels are a renewable source of energy that could be used instead of fossil fules
- There are advantages and disadvantages of using biodiesel
- Ethanol made form sugar is a biofuel
- Hydrogen is a potential fuel for the future
- Fuels from crude oil
- Alternative fuels
- Biodiesel can be made from vegetable oils
- Biofuels are a renewable source of energy that could be used instead of fossil fules
- There are advantages and disadvantages of using biodiesel
- Ethanol made form sugar is a biofuel
- Hydrogen is a potential fuel for the future
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