化工学报2018，Vol.69Issue(1)：249-258,10.DOI:10.11949/j.issn.0438-1157.20171016
催化裂化提升管进料段内多相流动及其结构优化
Multiphase flow characteristics and structural optimization in feed injection zone of FCC riser
摘要
Abstract
The flow/mixing condition of feed oil and catalysts in the feed injection zone of FCC riser plays a crucial role in the yield of the desired products.The early relative researches were essentially tentative optimization works.In recent years, large cold model experimental research, theoretical analysis and CFD simulation were widely carried out.It was found that the feed jet secondary flow, which is generated by a Kutta-Joukowski transverse force, contributes considerably to the mixing and flow in the traditional feed injection zone.Therefore, effectively controlling and utilizing the secondary flow is the key factor to optimize the traditional feed injection scheme.The proposed improved scheme has been widely used in commercial units.In the past six years, the downward pointed feed injection scheme has been proved to be a more desired structure by the Kutta-Joukowski transverse force analysis, cold model experiment and CFD simulation.It was shown that the mixing of feed oil and catalysts was intensified while the contacting of two-phase presented more uniform.In other words, the downward pointed feed injection scheme exhibited more obvious advantages comparing with the traditional.关键词
催化裂化/提升管反应器/进料段/多相流/混合/流动/优化Key words
FCC/riser reactor/feed injection zone/multi-phase flow/mixing/flow/optimization分类
化学化工引用本文复制引用
范怡平,卢春喜..催化裂化提升管进料段内多相流动及其结构优化[J].化工学报,2018,69(1):249-258,10.基金项目
国家重点基础研究发展计划项目(2012CB215004). supported by the National Basic Research Program of China (2012CB215004). （2012CB215004）
