化学工程2012，Vol.40Issue(9)：52-55,4.DOI:10.3969/j.issn.1005-9954.2012.09.012
烟气轮机叶片间隙中FCC催化剂细粉运动规律——叶片上的磨损与结垢
Catalyst fines behavior among FCC flue gas turbine blade rows——Erosion and fouling on blades
摘要
Abstract
Aiming at the problem of fouling occurred in the FCC flue gas turbines in many refineries, the gas-solid two-phase flow in flue gas turbines was studied by using Euler-Lagrange numerical simulation method, especially the behavior of fine powders in exhaust gas on the surface of rotors was explored by employing Discrete Phase Model (DPM). The results demonstrate that the trajectories of particles with various diameters are remarkably different, giving rise to various consequences; small particles with a diameter less than 3 μm always accumulate and melt to form fouling on the pressure-side surface of rotors, while large particles with a diameter more than 20 μm often induce erosion at the trailing edge of rotors. Besides, the predicted locations of erosion and deposition are well consistent to the real case in refinery. These results can provide the theoretical foundation for revealing the catalyst scaling mechanism and optimization of operating conditions of FCC flue gas turbines.关键词
烟气轮机/催化剂颗粒/运动轨迹/磨损/结垢Key words
FCC flue gas turbine/ catalyst particle/ trajectory/ erosion/ scaling分类
化学化工引用本文复制引用
杜玉朋,赵辉,杨朝合,张云,胡仁波..烟气轮机叶片间隙中FCC催化剂细粉运动规律——叶片上的磨损与结垢[J].化学工程,2012,40(9):52-55,4.基金项目
教育部自主创新科研计划新项目资助(11CX06061A) （11CX06061A）
