FCC废催化剂及磁分离后性能研究

STUDY ON THE CHARACTERING OF SEPARATED CATALYST OF FCC

在前人研究的基础上，应用原子吸收分光光度法对磁分离后的催化剂巾铁、镍的含量进行了测试和分析．并研究了磁分离后催化剂中重金属含量对磁化率、比表面积、活性等性能的影响，得出如下结论：分离点前部分的催化剂中重金属（Fe、Ni）的平均含量和磁化率比平衡催化剂分别降低了18．0％，61．0％左右，BET比表面积比平衡催化剂增加了26．6％左右．本研究中应用的小型实验装置的最佳操作条件为：磁场强度〉12000高斯，平均给料量4．0-2．0g·min^-1，磁辊转速22．88r·min^-1，接料槽高度4．0cm．以磁辊轴线正下方为中心分离线，其前部分分离后的催化剂基本符合回用条件，可以回用．

On the basis of preceding research, this paper used the atomic absouption spectrometry method to test and analyse the content of iron and nickel in the catalyst separated by magnetism. Moreover, it studied the influence of the heavy metal content on magnetic susceptibility, specific surface areas, and activeness and so on. The following conclusion was drawn：the average content and magnetic susceptibility of heavy metal in the detachment point front partial catalyst were decreased by ablut 18.0% ,61.0%comparing to the balance catalyst, respectively . And BET specific surface areas were increased by about 26.6% comparint to the balance catalyst. In this research the best operating condition of the small test installation which was used in this experiment was as follows：the magnetic field intensic was larger than 1- 000 Gausses, the average for supplied materials was 4.0 - 12.0 g·min^-1 ,rotational speed of magnetic axis was 22.88, and the height of meeting material tank is 4.0 metres. Taken the place of beneath magnetic axis as central separation line, the catalyst after forepart separation was basically matched to the condition of reuse.