FIELD: oil, gas and coke-chemical industry.
SUBSTANCE: invention relates to a method of treating petroleum gas, which includes the following steps: (1) first separation of petroleum gas of material into gas and liquid to obtain first material in gas phase, mainly containing H2 and C1-C4, and a first material in liquid phase, mainly containing C5+; and (2) treating the first gas phase material for a second gas/liquid separation to produce a second gas phase material substantially containing H2 and C1-C4, and second material in liquid phase, mainly containing H2 and C1-C4. Second gaseous phase material is treated by removing impurities from the gaseous phase and a second gaseous phase material purified from impurities is obtained, and the second liquid phase material is treated by removing impurities from the liquid phase and a second liquid phase material purified from the impurities is obtained. Second material in gas phase cleaned from impurities and the second material in liquid phase cleaned from impurities are mixed and then separated to obtain a dry gas product mainly containing H2 and C1, C2 product mainly containing C2, C3 product mainly containing C3, and a C4 product mainly containing C4. Invention also relates to embodiments of the method of treating petroleum gas and a system for treating petroleum gas.
EFFECT: high-efficiency separation and extraction of gasoline component, component C3 and component C4.
25 cl, 11 dwg, 24 tbl, 11 ex
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