As concern over global warming and environmental problems grows worldwide, there is increasing demand for natural gas as an energy source with a smaller environmental impact (lower CO2 emissions) than oil or coal. With this growth in demand, LNG plants are receiving much attention. Plant production capacity, which was initially approximately 1 million tons/year, has reached 7.8 million tons/year, and the capacities of the various process gas compressors used in the plant are also increasing. At the same time, there is also growing interest in the development of small and mid-sized LNG plants as a means of making effective use of unused gas fields.
At an LNG plant, the liquid components (condensate) are removed from the natural gas that was produced from the gas field. The natural gas then passes through acid gas (hydrogen sulfide, carbon dioxide) removal equipment, mercury removal equipment, dehydration equipment, and NGL removal equipment, and is then liquefied by liquefaction equipment where its volume is reduced by a factor of 600. Afterwards, the natural gas is stored in an LNG tank. Recently, in addition to the conventional “On-shore” LNG Plant, new technologies have created Floating LNG (F-LNG) which allows for offshore liquefaction.
MCO offers the various process gas compressors and drive equipment which are used in these gas processing and liquefaction processes. These technologies help contribute to the construction of a cleaner, more reliable gas-based society.
The schematic diagram of LNG plant process flow
LNG compressor trains
Regeneration gas compressors
Main refrigerant compressor
End flash gas compressor / Boil off gas compressor