【摘要】 提出对FCC再生催化剂进行快速水蒸气汽提处理的方法,以减少催化裂化过程中剂油比较大时再生催化剂带入反应系统的烟气量。冷模试验结果表明,该方法在脱气罐中设置了挡板,在保证较高汽提效率的前提下,能有效控制汽提介质与再生催化剂的接触时间,从而缓解用水蒸气作汽提介质而引起的催化剂水热减活,初步的工业试验结果表明该方法是可行的。更多还原

【Abstract】 In order to minimize the amount of flue gas carried into the FCC reactor by the cir-culating regenerated catalyst at high catalyst/oil ratio operation, a rapid stripping method was proposed. A cold model experiment showed that installation of baffles inside the regenerated catalyst withdraw well could keep high stripping efficiency and reduce the contact time of stripping medium with the catalyst,therefore, the deactivation of the catalyst by the stripping steam could be minimized. The preliminary commercial test indicated that the method was feasible.更多还原