LPG LNG CNG
|Propane and Butane||Methane||Methane cryogenically liquefied|
|C3H8 and C4H10||CH4|
|93.2 MJ/m3||38.7 MJ/m3|
|Derived form NG processing and crude oil refining||Natural Gas|
|Propane is heavier than air||Methane is lighter than air|
- Propane (/ˈproʊpeɪn/)
- Butane (/ˈbjuːteɪn/)
- Isopenten /i.zɔ.pɛ̃.tan/
Natural Gas Processing
Raw natural gas typically consists primarily of methane (CH4) and ethane (C2H6) and also contains
- Heavier gaseous hydrocarbons: propane (C3H8), normal butane (n-C4H10), isobutane (i-C4H10) and pentanes.
- CO2, H2S, N2, He
- The recovered NGL stream is processed through a fractionation train consisting of up to five distillation towers in series: a demethanizer, a deethanizer, a depropanizer, a debutanizer and a butane splitter.
- In the debutanizer column C3 (propane) and C4 (butane) are removed as overheads from the naphtha stream.