The de-C 9 fractionator of crack gasoline hydrogenation plant in Lanzhou Petrochemical Works was revamped.The problems of poor efficiency of the fractionator and the low yields of C 8 aromatics were solved by using patented feeder for flash evaporation and multistage guide liquid distributor.The utilization experiences for more than one half of a year show that the revamping is successful with decreasing energy consumption and increasing economical benefits.
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