What gasses make up LNG?
What gas or gasses are extracted from shale? ...all that's in your chart?
| 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 |
In its purest form, such as the natural gas that is delivered to your home, it is almost pure methane.
http://www.naturalgas.org/overview/background.asp
LNG, liquid natural gas is pure methane chilled to -260°F.
Depending on the shale formation we can get everything from crude oil, natural gas liquids to dry methane. Different shales have different mixes just like traditional fields can be nearly all oil, all natural gas or a mix with other liquids often referred to as condensate or NGLs.
Just what gases make up the gas that is piped into our homes and businesses?
- Mostly methane (96-98%) then ethane, propane and butane.
What gasses make up LNG?
- Ethane (C2) to Hexane (C6+) and “heavies” (>C6)
Rich gasses are extracted from shale Some shales yield richer gasses than others. They are fractioned into their constituent products using temperature and pressure changes (Midstream processing). Methane is sent to NG pipeline companies Like Kinder Morgan and TransCanada or sent to refracting companies like Valero for final “polishing” and delivery to chemical companies like Dow Chemical or BASF.