摘要
考虑粉尘颗粒沉积形成滤饼对过滤压力产生的影响,将滤饼层视为新增加的纤维捕集体,通过类比清洁状态下过滤压力损失与含尘状态下纤维过滤压力损失的关系以及量纲分析的方法,推导非稳态过滤状态下过滤压力损失的数学模型,得出相关实验系数,且数学模型计算结果与实测结果基本吻合。通过测试滤料非稳态过滤的压力损失,给出常用过滤介质非稳态过滤的压力损失增量计算的半经验公式,以便对过滤压力损失变化及运行时间进行预测,及时清灰或更换过滤介质,延长滤袋使用寿命。
Since the dust cake formed from the settling of dust particles exert impact on the filtration pressure loss, the dust cake is regarded as a new collector. The filtration pressure loss under clean condition is compared with that under dusty condition, and a math model of filtration pressure drop of non-stationary is developed. The experimental data reveal that the theoretical value computed by using the math model is basically in agreement with the experimental value. Baesed on the test of pressure loss in non-stationary filtration, a semiempirical formula for computation of the pressure loss increment in non-stationary titration when using common home made filtration media so as to estimate the change of the filtration pressure loss and duration of operation. Timely cleaning or replacing the filtration media can prolong the service life of the filtration bag.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2009年第4期15-18,23,共5页
Journal of Textile Research
基金
上海市重点学科建设资助项目(B604)
关键词
纤维过滤介质
非稳态过滤
压力损失
数学模型
fiber filter media
non-stationary filtration
pressure drop
math model
