FIELD: oil and gas industry.
SUBSTANCE: invention describes a method for removing heavy hydrocarbons in the liquefaction of natural gas comprising: preliminarily cleaned and dried natural gas is cooled, obtained vapour-liquid mixture is separated in a separator into liquid and vapour phases, withdrawing the liquid phase with increased content of heavy hydrocarbons for disposal, wherein cooling of natural gas is carried out in a heat exchanger, the vapour phase is directed from the separator to ejector passive flow inlet, from the natural gas liquefaction plant a portion of high pressure cold flow is withdrawn and sent to ejector active flow inlet, a flow from ejector is directed to additional separator, in which the flow is separated into gas and liquid, gas is directed to heat exchanger for recuperation of cold. After recuperation of cold, gas is directed to a compressor, after the compressor the gas is sent to the natural gas liquefaction plant. A device for removing heavy hydrocarbons is also disclosed.
EFFECT: providing uninterrupted operation of natural gas liquefaction plant without increase of machine equipment fleet.
7 cl, 3 dwg
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