Process for Liquefying Natural Gas and Natural Gas Liquids Recovery possible.Comprising two semi Open Refrigeration Cycles for Natural Gas and a Refrigerant to the Refrigerant gas closed Cycle

摘要

The Invention relates to a process for Liquefying natural gas comprising a Hydrocarbon mixture comprising predominantly MethaneThe process includes a First Refrigerant Cycle with semi Open natural gas in which any Liquid Natural Gas Condensate is separated from the natural gas feed StreamRalThe current then passes through a Main cryogenic Heat exchanger (4) to contribute, through the pre Cooling Heat Exchange of a main stream of gas.(F - p) and the initial Cooling of a Flow of Refrigerant gas (G 0),A Second Refrigerant Cycle semi Open natural gas contribute to the pre Cooling of the Refrigerant and Natural Gas and also to liquefy the natural gasAnd a closed Cycle Cooling With Refrigerant gas for sub Cooling Liquefied Natural Gas and to provide Cooling Energy in addition to the two other Cycles.The Invention also provides a natural gas Liquefaction plant for this process.