化学工程2012，Vol.40Issue(7)：57-60,4.DOI:10.3969/j.issn.1005-9954.2012.07.014
烟气轮机叶片间隙中FCC催化剂细粉运动规律——气相流场分布的影响
Catalyst fines behavior among FCC flue gas turbine blade rows -Effect of gaseous phase flow field distribution
摘要
Abstract
According to the problem of serious scale formation in the FCC flue gas turbines in many refineries, the distribution of gaseous phase flow field in flue gas turbines was studied by using a CFD-based numerical simulation method. The simulation shows that the distribution is characterized by low gas velocity, high humidity, and high temperature on the pressure-side of rotors, which makes the catalyst particles entrained by exhaust gases more readily accumulate and melt there. By means of instrumental analyses to fresh catalyst, equilibrium catalyst and scaling catalyst, including scanning electron microscope ( SEM) for micro-morphology analysis, and X-ray diffraction (XRD) for phase analysis, the catalyst scaling on the surface of blade is proved to be the concurrent consequence of particle accumulation and low-melting eutectic matter formation. The results provide a theoretical basis for further study on the catalyst particles behavior and the scaling mechanism in FCC flue gas turbines.关键词
烟气轮机/气相流场/仪器分析/结垢/熔融Key words
FCC flue gas turbine/ gaseous phase flow field/ instrumental analysis/ scaling/ melting分类
化学化工引用本文复制引用
杜玉朋,赵辉,杨朝合,胡仁波,张云..烟气轮机叶片间隙中FCC催化剂细粉运动规律——气相流场分布的影响[J].化学工程,2012,40(7):57-60,4.基金项目
教育部自主创新科研计划新项目资助(11CX06061A) （11CX06061A）
