FCC reaction of raffinate oil from slurry oil

Slurry oil was separated into an ideal component——raffinate oil,mainly saturated hydrocarbon by extraction.The comparative research with paraffin-base heavy oil was conducted on raw material properties,technological conditions of reaction,product distribution and properties with the use of raffinate oil as feed for FCC reaction.Experimental results indicated that raffinate oil had a fine FCC performance and its suitable reaction conditions were as follows:Catalyst to oil 6.0,reaction temperature 520 ℃,weight hourly space velocity 12.0 h 1.Compared with heavy oil,liquid yield of raffinate oil increased 1.69 % and coke yield increased by 0.02 %.Under the same conditions of catalyst to oil 5.0,reaction temperature 500 ℃,weight hourly space velocity 14.4 h 1,liquid yield of raffinate oil increased by 0.19 % and coke yield increased by 2.55 %.Octane value of FCC gasoline from raffinate oil was the same as heavy oil while cetane value of diesel was 3.7 lower and its regenerated catalysts has a lower degree of deactivation.Raffinate oil could completely replace heavy oil as FCC feedstock.