Method for extracting FCC oil slurry aromatic hydrocarbons
A technology for extracting catalytic oil slurry and catalytic oil slurry, which is applied in the petroleum industry, refining hydrocarbon oil, etc., can solve the problems such as the extraction effect that the effect is not as good as compound solvent, and achieve easy large-scale industrial production, simple equipment and wide adaptability. Effect
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[0012] 1) Heating pretreatment: heating the catalytic cracking oil slurry and compound extractant to 60°C at the same time;
[0013] 2) Pump the compound extractant into the pulse-packed extraction tower with a centrifugal pump. When the liquid level of the extractant is between the overflow port and the feed port at the top of the tower, adjust the flow rate. At this time, also adjust the discharge flow rate at the bottom of the tower. Make the liquid level stable between the overflow port and the feed port.
[0014] 3) Turn on the light-phase pump to make the catalytic oil slurry enter the extraction tower from the bottom of the tower, and adjust the flow rate of the catalytic oil slurry so that the ratio of agent to oil of the extraction agent is 2:1 to 3:1 for multi-stage countercurrent extraction.
[0015] 4) Solvent recovery: the extraction phase and the raffinate phase enter the vacuum rectification tower respectively, under the conditions of pressure of 26.66KPa, reflu...
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