Regasification is a process of converting

liquefied natural gas Liquefied natural gas (LNG) is natural gas (predominantly methane, CH4, with some mixture of ethane, C2H6) that has been cooled down to liquid form for ease and safety of non-pressurized storage or transport. It takes up about 1/600th the vol ...

(LNG) at −162 °C (−260 °F) temperature back to natural gas at atmospheric temperature. LNG gasification plants can be located on land as well as on floating barges, i.e. a Floating Storage and Regasification Unit (FSRU). Floating barge mounted plants have the advantage that they can be towed to new offshore locations for better usage in response to changes in the business environment. In a conventional regasification plant^RU, LNG is heated by sea water to convert it to natural gas /

methane Methane ( , ) is a chemical compound with the chemical formula (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The relative abundance of methane on Ea ...

gas.

Byproducts

In addition to regasification, many valuable industrial byproducts can be produced using cold energy of LNG. Cold energy of LNG utilisation, for extracting liquid

oxygen Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as ...

and

nitrogen Nitrogen is the chemical element with the symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at se ...

gas from air, makes LNG-regasification plants more viable when they are located near integrated steel plants and/or urea plants. Cold energy of LNG usage in lieu of massive and energy intensive cryogenic refrigeration units in

natural-gas processing Natural-gas processing is a range of industrial processes designed to purify raw natural gas by removing impurities, contaminants and higher molecular mass hydrocarbons to produce what is known as ''pipeline quality'' dry natural gas. Natural gas ...

plants is also more viable economically. The natural gas processed with cold energy of LNG and the imported LNG can be readily injected into a conventional natural gas distribution system to reach the ultimate consumers. The cold energy of LNG can be used for cooling the exhaust fluid of the

gas turbine A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the directio ...

which is working in closed

joule cycle The Brayton cycle is a thermodynamic cycle that describes the operation of certain heat engines that have air or some other gas as their working fluid. The original Brayton engines used a piston compressor and piston expander, but modern gas tur ...

with

Argon Argon is a chemical element with the symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. Argon is the third-most abundant gas in Earth's atmosphere, at 0.934% (9340 ppmv). It is more than twice as ...

gas as fluid. Thus near 100% conversion efficiency to electricity is achieved for the LNG/natural gas consumed by the gas turbine as its exhaust heat is fully used/absorbed for the gasification of LNG. However, the abundant availability of natural gas, and the mature technology and its acceptability in using the LNG directly (without regasification) in road and rail vehicles would lead to lesser demand for LNG regasification plants.The On-Road LNG Transportation Market in the US
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References

External links

Dynamic depressurisation calculations LNG regasification unitGlobal LNG Regasification Markets
{{fuel gas Liquefied natural gas Fuel gas Petroleum industry

Byproducts

See also

References

External links