Liquefaction of Natural Gas

摘要

A method and apparatus for liquefying natural gas vapour is provided. Firstly, liquid natural gas is sub-cooled at a first heat exchanger using a liquid coolant such as liquid nitrogen. The sub-cooled liquid natural gas is then used to condense the natural gas vapour at a second heat exchanger.

主权项

1. A method for condensing natural gas vapour to generate liquefied natural gas (LNG), comprising:
providing a liquid coolant, wherein the liquid coolant has a boiling point less than that of natural gas; cooling LNG at a first heat exchanger using the liquid coolant to generate sub-cooled LNG; and condensing natural gas vapour at a second heat exchanger using the sub-cooled LNG to liquefy the natural gas vapour and thereby generate further LNG.