摘要
颗粒碰撞压力的大小和频率会严重影响气固流化床中内部构件及其支撑部件等的磨蚀情况和使用寿命，是设计流化床中内部构件及其支撑部件的关键因素之一。采用膜式压力应变传感器、多通道数据采集仪测定不同颗粒在操作流速0．2621～0．5242m／s浓相区内不同轴向、径向位置处的颗粒碰撞压力信号，通过小波分析和相空间重构分析，揭示颗粒和气泡对颗粒碰撞压力的影响和气固流化床中内部构件的影响。
The particle colliding pressure could influence the erosion and lifetime of the interior components （such as heat tubes, baffles） and their support components of gas-solid fluidized bed seriously, it was one of the key factors for the design of gas-solid fluidized bed. The particle colliding pressure signals of different granularity of PVCs and sands at different axis position and radial position in gas-solid fluidized bed under the experimental flow rate 0. 262 1-0. 524 2 m/s were detected by the pressure strain gauge and the multi-channel data automatic acquisition. Influence of particles and bubbles on the particle colliding pressure and the interior components of the fluidized bed was dissertated by wavelet transform analysis and phase-space reconstruction analysis.
出处
《化学反应工程与工艺》
EI
CAS
CSCD
北大核心
2006年第4期324-328,共5页
Chemical Reaction Engineering and Technology
关键词
气固流化床
颗粒碰擅压力
小波变换
相空间重构
gas-solid fluidized bed
particle colliding force
wavelet transform
phase-space reconstruction
