脉冲喷吹滤筒除尘器喷吹清灰实验与数值模拟  

Jet-cleaning experiment and simulation of a pulse-jet cartridge filter

作　　者：袁彩云[1] 陈海焱[1] 李波[1] 

机构地区：[1]西南科技大学

出　　处：《暖通空调》2012年第5期104-107,共4页Heating Ventilating & Air Conditioning

基　　金：国家支撑计划资助项目--燃煤电厂固硫灰渣高效利用成套技术(编号:2011BAA04B04);四川省科技厅项目--袋式除尘器在过热蒸汽气流粉碎收集中的关键技术研究(编号:11ZS2006)

摘　　要：通过喷吹实验台对Ф147×1 000mm滤筒的脉冲喷吹清灰过程进行了实验测试,运用数据采集系统得到了滤筒表面压力峰值的动态变化曲线图;并利用CFD模拟滤筒的清灰过程,计算过程采用非稳态计算方法,得到了不同喷吹时刻滤筒表面的压力峰值。在喷吹压力一定的条件下,沿滤筒长度方向上,正压力峰值到达时间是逐渐增加的;滤筒内压力峰值并非随着喷吹时间的增加而不断增大,当喷吹时间大于60ms时,随着喷吹时间的增加压力峰值有下降趋势。模拟得到的压力峰值曲线与实验曲线变化趋势一致。By testing the jet-cleaning process of a filter cartridge of φ147×1000 mm in size on a jet experiment platform, obtains a dynamic change curve of peak pressure by means of a data collection system. Adopting CFD to simulate the jet-cleaning process of the filter using an unsteady calculation method, gains the peak pressures at different pulse-jet times. The occurring time of positive peak pressure is gradually increasing along the length direction of the cartridge under a given jet pressure. The increase of the peak pressure in cartridge does not increase with the jet time and the peak pressure has a decrease trend when the jet time is longer than 60 ms. The variation trend of the peak pressure curve from simulation is accordant with the one from the experiment.

关 键 词：滤筒除尘器脉冲喷吹数值模拟压力峰值喷吹时间 

分 类 号：X701.2[环境科学与工程—环境工程]