The Research On High Nickel FCC Equilibrium Catalyst Magnetic Separation Recovery Technology Industry Application

The paper researches into the process condition of high nickel FCC equilibrium catalyst magnetic separation recovery technology industry application. The main factors and affection rule that affect separation are confirmed by single factor experiments and orthogonal experiments and the best process condition is concluded that feedstock velocity is 80kg/h, transmission belt thickness is 0.13mm, distributor angle is 25°and magnetic roller rotate speed is 300r/min. Among the factors, transmission belt thickness affects strongly recovery rate, next one is distributor angle, the third one is feedstock velocity and last one is magnetic roller rotate speed. The experiment shows that magnetic separation unit under the best technology condition applying high nickel equilibrium catalyst in 1.4Mt/a Catalytic Cracking Unit and Catalytic Workshop Beiku of the Dagang Petrochemical Company or secondary high nickel equilibrium catalyst in 0.8Mt/a and 1.2Mt/a Catalytic Cracking Unit of the North China Petrochemical Company , microreactor activity raises 4 to 8 unit and metal removal rate is 21 to 30 percent when recovery rate is 35 to 45 percent. The higher the equilibrium catalyst grain radius distribution quality frequency that is larger than 40μm used in experiments of the paper is , the lower magnetic separation recovery rate is, the higher metal removal rate is and the better magnetic separation effect is. FCC equilibrium catalyst can be separated effectively by using a high induction strength roller permanent-magnet separation unit. Under the condition of that FCC unit normal run is not affected, magnetic separation recovery catalyst can be used to substitute for live catalysts wholly or partly and it can not only save catalyst cost for a refinery and reduce discharge of harmful solid wastes and raise light oil recovery rate but also bring considerable economic and social benefit for a refinery. A Physical method is used to recover FCC equilibrium catalyst in the project. Industry application experiments show that the repeatability of the project is better and there is not magnification effect and the research has better development and application future.