The study achievements about the two phase flow characteristics of feedstock and catalyst in riser of FCC u-nit during the past decades are summarized in the paper.

• 总结了近年来催化裂化装置对提升管内油剂两相流动特征的研究成果。说明改善进料喷嘴的雾化效果,可完善裂化反应,减少焦炭等副产品的产生。