| 摘要 |
<p>A method for production of liquefied natural gas (LNG) from a natural gas source, the method comprising introduction of the natural gas into a gas terminal where the gas is pre-treated, where the pre-treated natural gas is led via subsea pipelines to floating liquid natural gas production units (FLNG) offshore, each comprising one or more LNG production unit(s) where the natural gas is liquefied to give LNG and where the LNG is transferred to LNG tankers for transport to markets, wherein the pre-treatment of the gas before transfer to the FLNG comprises separation of liquefied Petroleum Gas (LPG) from the natural gas to give a LNG ready natural gas comprising > 85 % by volume methane, and < 100 ppm C5+ hydrocarbons, where LNG ready natural gas is compressed to a pressure of 140 bar or more in the gas terminal, where the gas is transported in subsea pipelines to the FLNG at this high pressure, and where the pressure of the natural gas is reduced to a working pressure for LNG liquefaction onboard the FLNG, before the LNG ready natural gas is introduced into the LNG production unit(s) for liquefaction, and where the LNG ready natural gas is cooled in a heat exchanger against a heat medium, is described. A system for LNG production using the present method is also described.</p> |
