气体污染物过滤器阻力预测方法及验证
Prediction method and verification of resistance of gas pollutant filters
摘要：
基于理论推导和相关实验，给出了平板型和W型褶型碳布式化学过滤器的阻力预测公式。研究显示：克重为600～1 000 g/m2的夹碳布的阻力为20～300 Pa，随着滤速的增加，夹碳布的阻力增大，阻力与滤速呈线性关系；阻力系数受含碳量、碳布材料和克重、制作工艺等多因素的影响，克重为600～1 000 g/m2的夹碳布的阻力系数为350～700 Pa·s/m；相同滤速下，活性炭+树脂类夹碳布的阻力系数小于相同克重的活性炭类夹碳布；平板型过滤器的阻力理论值与实测值的误差在10%以内，而W型过滤器的阻力主要由滤料的阻力引起。
Abstract：
Based on the theoretical derivation and related experiments, the resistance prediction formulas of the plate and W-shaped close-pleated carbon cloth chemical filters are given. The results show that the resistance of carbon cloth with a gram weight of 600-1 000 g/m2 is 20-300 Pa, with the increase of filtration rate, the resistance of carbon cloth increases, and there is a linear relationship between resistance and filtration rate. The resistance coefficient is affected by carbon content, carbon cloth material, gram weight, production technology and other factors, and the resistance coefficient of carbon cloth with 600-1 000 g/m2 is 350-700 Pa·s/m. At the same filtration rate, the resistance coefficient of the carbon cloth consisting of activated carbon and resin is less than that of the carbon cloth consisting of activated carbon with the same gram weight. The error between the theoretical value of the plate filter resistance and the measured value is less than 10%, and the resistance of the W-shaped filter is mainly caused by the resistance of the filter material.
Keywords:gaspollutant;chemicalfilter;carboncloth;resistance;resistancecoefficient;filtrationrate