METHOD AND DEVICE FOR PROCESSING FLOW OF HYDROCARBONS Russian patent published in 2012 - IPC F25J3/02 

FIELD: machine building.

SUBSTANCE: proposed method comprises feeding partially condensed raw stock flow into first gas-fluid separator for separation at above 20 bar and below 40 bar, separating raw stock flow into gas and fluid flows in said first separator, expanding fluid flow and feeding it into second gas-fluid separator, separating said gas flow into, at least, two subflows. Note here that, after separation, said subflows have identical composition and phase state. First subflow is expanded to produce partially condensed first subflow to be fed into aforesaid second separator. Second subflow is cooled down by cold flow to produce partially condensed second subflow to be fed into second gas-fluid separator. Gas and fluid flows are discharged from second separator.

EFFECT: lower costs, higher degree of ethane and heavier hydrocarbons extraction.

18 cl, 1 dwg, 2 tbl