METHOD TO LIQUEFY FLOW OF HYDROCARBONS AND PLANT FOR ITS REALISATION Russian patent published in 2011 - IPC F25J1/02 

FIELD: power engineering.

SUBSTANCE: method to liquefy a flow of hydrocarbons, for instance, natural gas of a raw materials flow, includes at least the following stages: (a) provision of raw materials flow, separation of raw materials flow (10), (b) stage (a) with production of at least the first raw materials flow (20), making at least 90 wt % of the initial raw materials flow (10), and the second raw materials flow (30); (c) liquefaction of raw materials flow (20) of the stage (b) at the pressure in the range from 20 to 100 bar to produce the first flow (40) of liquefied natural gas (LNG); (d) cooling of the second raw materials flow (30) of the stage (b) to produce the cooled raw materials flow (50); (e) combination of the first flow (40) of LNG from the stage (c) with the cooled raw materials flow (50) of the stage (d) to produce a combined flow (60) of LNG; (f) reduction of pressure of the combined LNG flow of the stage (e); and (g) passage of the combined flow (60) of LNG of the stage (f) via an evaporating reservoir (12) to produce the LNG flow (70) - the product - and the gas flow (80).

EFFECT: minimised losses and increased efficiency.

14 cl, 1 dwg