高校化学工程学报2017，Vol.31Issue(6)：1276-1284,9.DOI:10.3969/j.issn.1003-9015.2017.06.004
油剂逆流接触FCC提升管进料段内喷嘴射流浓度的分布
Distribution of Feed Jet Concentration in Catalyst-Feed Countercurrent Contacting Injection Zone of a FCC Riser
摘要
Abstract
The radial distribution of feed jet concentration was studied in a large-scale cold model FCC riser, where the feed jets contacted counter-currently with particle flow from riser bottom in the feedstock injection zone. When pulse tracer technique was used to measure feed jet concentration, the particle volume was not considered in the calculating expressions of previous studies. Therefore, the discrepancy between particle volume considered and unconsidered was analysed, and a new expression was proposed. The experimental results show that the revised calculation expression can improve calculation accuracy and reduce errors. Moreover, the injection structure of catalyst-feed countercurrent contacting is better in realizing more uniform distribution of feed jet concentration in the feedstock injection zone.关键词
FCC提升管/进料段/射流/浓度分布Key words
FCC riser/feedstock injection zone/jet/concentration distribution分类
化学化工引用本文复制引用
边京,赵凤静,范怡平,卢春喜..油剂逆流接触FCC提升管进料段内喷嘴射流浓度的分布[J].高校化学工程学报,2017,31(6):1276-1284,9.基金项目
国家重点基础研究发展计划项目(2012CB215000). （2012CB215000）
