FIELD: process engineering.
SUBSTANCE: invention relates to chemical oil and gas industries and ca be used for extraction of helium concentrate, nitrogen, methane and liquid hydrocarbons (C2+) from natural gas. Proposed device comprises 18 heat exchangers, demethaniser, five separators, compressor for methane cooling cycle, nitrogen enrichment column, two expander-compressor units, ejector, nitrogen and methane separators, helium column, pump and seven throttles.
EFFECT: higher extraction of nitrogen and helium, expanded process performances.
5 cl, 1 dwg
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