摘要：为了研究卧轮式气流分级机结构对分级性能的影响,在分级室不同位置安装挡板,考察不同进气量与叶轮转速时分级机对流化催化裂化催化剂的分选情况,分析挡板对粗粉收率、粗粉中细粉含量以及分级精度的影响。结果表明,与无挡板及增设下游挡板相比,分级室增设上游挡板可使粗粉收率增大5%~6%,分级精度明显提高,同时进气量消耗减少约50%,有效改善了分级机的分级性能。

关键词：卧轮式气流分级机；挡板；流化催化裂化催化剂；分级性能

Abstract：To research the effect of structure of a horizontal turbo classifier on its classification performance,deflectors were equipped at different positions of the classifier. The separation of fluidized catalytic cracking catalysts by the classifier with different air volume rates and wheel speeds was investigated. Effect of the deflectors on coarse yield,fine powders content in coarse powders and classification accuracy was analyzed. The results show that comparing with the classifier equipped with a downstream deflector and no deflector,the coarse yield increases by 5% to 6% when the classifier is equipped with an upstream deflector.The classification accuracy is promoted obviously and the gas consumption is decreased by about 50%. Equipping with an upstream deflector can improve the classification performance of the horizontal turbo classifiers effectively.

Keywords: horizontal turbo classifier；deflector；fluidized catalytic cracking catalyst；classification performance