Differences between natural gas and liquefied petroleum gas

The differences between natural gas  and liquefied petroleum gas as follows 

Properties Natural gas Liquefied petroleum gas
Types of source It is primary gaseous fuel obtained from oil fields
Two types of natural gas are dry natural gas and wet natural gas
It cannot be liquefied under pressure
It is secondary gaseous fuel obtained by fractional distillation of crude petroleum or cracking heavy oils
Two types of LPG are LPG containing only propane and LPG containing only butane
It can be easily liquefied under pressure
Chemical composition CNG contain CH4 (70 to 90%), C2 to C4 hydrocarbons (10 to 30%,Hydrocarbon having more than 4 carbon atoms (0.3 to 3%), CO (1%), CO (1 to 2%), N2 (0.5 to 5%)
The impurities such as traces of CO2 ,N2,H2S and water vapours are present
in LPG contains propane, butane, little amounts of pentane and hexane
It contains almost no impurities
Heating values CNG has a calorific value of about 13000cal\l. LPG has a calorific value of about 25000 cal\L.
Time at construction Slow and time-consuming construction. Fast and speed construction.
Uses Used as domestic, industrial and motor fuel and preparation for various organic compounds. Used as domestic, industrial and motor fuel

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