Liquefaction of Gas

Liquefaction of gas is the process of converting gases into a liquid form, primarily by cooling and/or applying high pressure.  This is often done to store or transport gases more efficiently, as liquids occupy much less volume than gases.  

Liquefied Natural Gas (LNG)

• LNG is primarily composed of methane and is created by cooling natural gas to around -162°C (-260°F), which turns it into a liquid.
• LNG takes up about 1/600th of the volume of natural gas in its gaseous state, making it much easier and more efficient to transport over long distances where pipelines are not feasible.
• LNG is commonly transported by special insulated tanker ships and is later regasified at receiving terminals for use in heating, electricity generation, and as a fuel for vehicles.

Liquefied Petroleum Gas (LPG)

• LPG typically includes propane, butane, or a mixture of the two, which are gases at room temperature but can be liquefied under moderate pressure.
• Once liquefied, LPG is stored in pressurized tanks and is commonly used as fuel for heating, cooking, and vehicles, and in industrial applications.
• LPG is easier to handle than LNG because it liquefies under much less intense cooling or pressure conditions.