杂质不算少唉。。。。

来源: 于 2015-11-15 17:04:31 [旧帖] [给我悄悄话] 本文已被阅读：次

http://naturalgas.org/overview/background/

 

Typical Composition of Natural Gas
Methane CH4 70-90%
Ethane C2H6 0-20%
Propane C3H8
Butane C4H10
Carbon Dioxide CO2 0-8%
Oxygen O2 0-0.2%
Nitrogen N2 0-5%
Hydrogen sulphide H2S 0-5%
Rare gases A, He, Ne, Xe trace