LNG train
Encyclopedia
An LNG train is the term used to describe the liquefaction and purification facilities in a liquefied natural gas
plant.
In order to make it practical and commercially viable to transport natural gas from one country to another, its volume has to be greatly reduced. To obtain maximum volume reduction, the gas has to be liquefied through the application of refrigeration technology which makes it possible to cool the gas down to approximately -160 °C. This process also requires very strict safety measures and precautions during all liquefaction stages, due to the highly vulnerable and flammable nature of the gas involved.
Since the numerous impurities that are naturally found in the raw gas freeze at low temperatures, and would thus block the cryogenic section of the plant, the gas has to be purified before it can be cooled down to cryogenic temperatures.
Each LNG plant consists of one or more trains to compress natural gas into liquefied natural gas. A typical train consists of a compression area, propane
condenser area, methane
and ethane
areas.
Liquefied natural gas
Liquefied natural gas or LNG is natural gas that has been converted temporarily to liquid form for ease of storage or transport....
plant.
In order to make it practical and commercially viable to transport natural gas from one country to another, its volume has to be greatly reduced. To obtain maximum volume reduction, the gas has to be liquefied through the application of refrigeration technology which makes it possible to cool the gas down to approximately -160 °C. This process also requires very strict safety measures and precautions during all liquefaction stages, due to the highly vulnerable and flammable nature of the gas involved.
Since the numerous impurities that are naturally found in the raw gas freeze at low temperatures, and would thus block the cryogenic section of the plant, the gas has to be purified before it can be cooled down to cryogenic temperatures.
Each LNG plant consists of one or more trains to compress natural gas into liquefied natural gas. A typical train consists of a compression area, propane
Propane
Propane is a three-carbon alkane with the molecular formula , normally a gas, but compressible to a transportable liquid. A by-product of natural gas processing and petroleum refining, it is commonly used as a fuel for engines, oxy-gas torches, barbecues, portable stoves, and residential central...
condenser area, methane
Methane
Methane is a chemical compound with the chemical formula . It is the simplest alkane, the principal component of natural gas, and probably the most abundant organic compound on earth. The relative abundance of methane makes it an attractive fuel...
and ethane
Ethane
Ethane is a chemical compound with chemical formula C2H6. It is the only two-carbon alkane that is an aliphatic hydrocarbon. At standard temperature and pressure, ethane is a colorless, odorless gas....
areas.