化工学报2016，Vol.67Issue(8)：3287-3296,10.DOI:10.11949/j.issn.0438-1157.20160399
差异旋风分离器并联性能测量及流场分析
Measurement of separation performance and numerical analysis on flow field of different cyclone separators in parallel
摘要
Abstract
Three different cyclone separators with diameter of 300 mm, PV-1, PV-2 and PV-3, were designed by changing either the direction of rotation or the diameter of vortex finder. PV-1 differed from PV-2 in the direction of rotation, while PV-3 differed from PV-1 in the diameter of vortex finder. These cyclone separators were assembled center-symmetrically in three paralleled arrangements as assembly of same cyclones (Parallel-Ⅰ), assembly of various rotation (Parallel-Ⅱ) and assembly of various vortex finder (Parallel-Ⅲ). Parallel-Ⅰ was consisted of four PV-1 cell cyclones; Parallel-Ⅱ was consisted of two PV-1 cyclones and two PV-2 cyclones; Parallel-Ⅲ was consisted of two PV-1 cyclones and two PV-3 cyclones. Separation performances of single cyclone and cyclone assemblies were studied in a cold state experimental setup under a condition of solid loading at 5 g·m−3 and inlet velocities ranging from 14—26 m·s−1. The flow fields in these paralleled cyclones were simulated with FLUENT software. The results show that paralleled cyclones had higher efficiency than single one with no hump in the curve of efficiencyversus inlet velocity. Compared to Parallel-Ⅰ, Parallel-Ⅱ was lower in both total pressure drop and efficiency due to weaker swirl flow. Gas throughput was evenly distributed among each cell cyclone and no cross flow was observed in the common dust bin of either Parallel-I or Parallel-Ⅱ. However, Parallel-Ⅲ had higher total pressure drop than Parallel-Ⅰ. Because Parallel-Ⅲ was composed of cell cyclones with different vortex finder, gas throughput in Parallel-Ⅲ was no longer evenly distributed and an average deviation of about 6.0% was observed between the inlet and outlet of each cell cyclone. A cross flow in the common dust bin was also happened from PV-3 to PV-1, which forced some collected particles back to the inner flow, weakened the stability of vortex flow and decreased separation efficiency. Therefore, the same type of cyclone separators should be assembled center-symmetrically in parallel in order to ensure high separation efficiency of paralleled cyclones.关键词
旋风分离器/并联/测量/流场/数值分析Key words
cyclone separator/in parallel/measurement/flow field/numerical analysis分类
化学化工引用本文复制引用
陈建义,高锐,刘秀林,李真发..差异旋风分离器并联性能测量及流场分析[J].化工学报,2016,67(8):3287-3296,10.基金项目
国家自然科学基金项目（21176249）；国家重点基础研究发展计划项目（2012CB215000）。Foundation item:supported by the National Natural Science Foundation of China (21176249) and the National Basic Research Program of China (2012CB215000) （21176249）
