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[Chemical Knowledge]：Difference between propane, butane and liquefied gas

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Propane, butane and liquefied gas are common alkane gas fuels, and there are some differences in chemical structure, application field and use characteristics. The following will be introduced one by one.

1. chemical structure:
1. Propane (C3H8) is a three-carbon alkane consisting of three carbon atoms and eight hydrogen atoms.
2. Butane (C4H10) is a four-carbon alkane consisting of four carbon atoms and ten hydrogen atoms.
3. liquefied petroleum gas (liquefied petroleum gas, referred to as LPG) is a mixed gas, mainly composed of propane and butane, and contains a small amount of ethane, methane and other gas components.

2. applications:
1. propane is mainly used as fuel gas, widely used in home cooking, camping and other occasions.
2. Butane can also be used as a fuel gas, but it is mainly used in industrial fields, such as the production of polystyrene and the extraction of solvents.
3. Liquefied gas is a common civil fuel gas, which is widely used in cooking, heating and hot water supply in homes, hotels, restaurants and other places.

3. use characteristics:
1. Propane combustion efficiency is high, can provide a higher calorific value, after combustion will not produce dust and residue, more clean.
2. The combustion temperature of butane is higher and the combustion effect is good, but it produces more gaseous pollutants and is less friendly to the environment.
3. The combustion of liquefied gas is stable and the combustion temperature is moderate, but it is necessary to pay attention to safety for open-air use to avoid accidents caused by gas leakage.

sum up, propane and butane are alkane gas fuel, propane is mainly used in home cooking and camping and other occasions, butane is mainly used in industrial fields, such as plastic production, and liquefied gas is a mixture of propane and butane, widely used in homes, hotels, restaurants and other places of cooking and heating. In terms of use characteristics, propane has high combustion efficiency and is relatively clean, butane has high combustion temperature but is not environmentally friendly, and liquefied gas has stable combustion and moderate temperature. Therefore, in different application scenarios, it is very important to choose the right fuel gas, not only to meet the needs, but also to consider environmental and safety factors.