Device for methane liquefaction

Abstract

The invention relates to a device for methane liquefaction comprising a cooling module (A) which is provided with an inlet of gaseous methane, to the outlet of the cooling module (A) being associated a condensing and separating module (B) provided with an outlet (702) of liquid methane. The cooling module (A) comprises at least one heat recovery exchanger (1, 3) and a cooler (2) coupled to a cooling device (8), wherein the downstream condensing and separating module (B) comprises a condensing cooling device (9) and at least one heat recovery exchanger (5), which is connected to a methane gas / liquid phase separator (7), upstream of which a throttling device (6) is included, wherein the methane gas / liquid phase separator (7) is provided with an outlet (703) of methane gas phase, to which are associated return pipelines (R1, R2, R3), passing through the heat recovery exchangers (1, 3, 5) as far as to an end return pipeline (R4).

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