FIELD: process engineering.
SUBSTANCE: invention relates to processing of associated or natural gas, particularly, to low-temperature separation of gas components. Proposed process includes mix cooling and expansion of products produced from said mix. Then, at least a portion of products is forced through rectifier. Then, said mix is expanded in swirled flow in the nozzle for said flow to be divided into flow enriched with components heavier than methane and floor lean in said components. Lean flow is heated at cooling of products produced from aforesaid mix. Note here that heated lean gas flow is compressed in compressor and cooled in water cooling unit. A portion of produced gas product is used as an output product. Another portion is additionally cooled and expanded. Expansion products are directed into rectifier and/or mixed with gas phase products fed from rectifier to nozzle.
EFFECT: higher efficiency of gas cleaning.
5 cl, 2 dwg, 1 tbl
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