【摘要】 为减小颗粒层过滤器过滤压力损失及降低运行费用,探寻颗粒层过滤压力损失的变化规律及减低其压力损失的途径,合理地确定清灰周期,通过建立颗粒层实验装置,在稳态过滤及非稳态过滤2种条件下,进行过滤压力损失的单因素及正交实验研究,得出了过滤风速、过滤入口粉尘浓度及过滤时间对颗粒层过滤器压力损失的影响规律。通过回归分析得出了颗粒层过滤器压力损失在稳态过滤及非稳态过滤过程的关联计算式及计算式的适用范围,关联计算式计算结果与相关文献对比结果基本吻合。更多还原

【Abstract】 In order to reduce the pressure drop and running cost of granular bed filter,and to find the way of reducing pressure drop and determining the cleaning time of the granular bed filter,the orthogonal experiment on pressure drop was carried out under stationary and non-stationary conditions.The rule of the effects of filtering speed,dust concentration at inlet of the filter and filtering time on the pressure drop was obtained.The relative computing formula of pressure drop and its use range under stationary and non-stationary conditions were get by regression analysis.The result of relative computing formula is basically accordant with the result from literature.更多还原