FIELD: oil and gas industry.
SUBSTANCE: invention can be used in the oil and gas and chemical industries. Method for improving efficiency of sponge oil absorption comprises providing cold flash drum (12A) liquid (11) to an inlet of cold stripper (12) to produce cold stripper (12) net overhead vapour stream rich in liquid petroleum gas, separately providing hot flash drum liquid (21) to an inlet (22A) of hot stripper (22) to produce hot stripper (22) net overhead vapour stream rich in hydrogen. Cold stripper (12) net overhead vapour stream and hot stripper (22) net overhead vapour stream are separately routed to absorber (34) with sponge oil in trays located at different locations to recover the liquefied petroleum gas effluent stream using sponge oil.
EFFECT: invention makes it possible to increase the efficiency of the absorption of liquefied petroleum gas from cold stripper and hot net overhead vapour streams.
10 cl, 3 dwg
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