FIELD: petroleum chemistry. SUBSTANCE: at least part of components of gaseous raw is compressed and fluidized in the fluid-flow ejector at condensation and absorption with unstable hydrocarbon fraction as an active flow to yield a liquid phase comprising an active flow and components of gaseous raw. Obtained liquid phase is compressed and subjected for rectification to yield C1-C4-components or their fractions and C5+-components or their fractions. EFFECT: simplified technology of method. 1 dwg, 2 tbl
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