石油化工2018，Vol.47Issue(3)：253-258,6.DOI:10.3969/j.issn.1000-8144.2018.03.008
非满流下新型锥套螺带干燥机流体流动分析
Analysis of fluid flow of new cone ribbon dryer under non-full flow condition
摘要
Abstract
According to the technical characteristics of polysilicon solid slag treatment and the design defects of drying machines at the present stage,a continuous cone ribbon dryer with inner and outer cylinders was designed,and the accuracy of simulation was verified by cold model test. After certain simplification,a model was constructed by Pro/E software and then introduced into Fluent 14.5 software where the gas-liquid two-phase fluid flows in the dryer under the condition of non-full flow were preliminarily simulated. The results showed that multiple eddies and local circulations were generated in the basin of the dryer. The axial,radial and tangential velocities of the fluid were maximums at the ribbon. Eddy and liquid-solid separation were produced at the back pressure zone of the ribbon. With the stirring of the ribbon,the interface of gas-liquid phase was higher near the ribbon side,and increased with a decrease in liquid level and an increase in rotary speed. The residence time of the dryer was about 3 235-3 985 s. This paper provided a useful guidance to the application of ribbon dryer in solid slag treatment of polysilicon.关键词
设计/气液两相流/计算流体力学/干燥/多晶硅Key words
design/gas-liquid two-phase flow/computational fluid dynamics/drying/polysilicon分类
化学化工引用本文复制引用
王晓静,武宸宇,刘雅茜,李元奎..非满流下新型锥套螺带干燥机流体流动分析[J].石油化工,2018,47(3):253-258,6.
