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暖通空調>期刊目次>2022年>第8期

氣體污染物過濾器阻力預測方法及驗證

Prediction method and verification of resistance of gas pollutant filters

王志強[1] 張方柱[1] 裴晶晶[2] 候貝貝[2] 李寒羽[2]
[1]天津商業大學 [2]天津大學

摘要:

基于理論推導和相關實驗,給出了平板型和W型褶型碳布式化學過濾器的阻力預測公式。研究顯示:克重為600~1 000 g/m2的夾碳布的阻力為20~300 Pa,隨著濾速的增加,夾碳布的阻力增大,阻力與濾速呈線性關系;阻力系數受含碳量、碳布材料和克重、制作工藝等多因素的影響,克重為600~1 000 g/m2的夾碳布的阻力系數為350~700 Pa·s/m;相同濾速下,活性炭+樹脂類夾碳布的阻力系數小于相同克重的活性炭類夾碳布;平板型過濾器的阻力理論值與實測值的誤差在10%以內,而W型過濾器的阻力主要由濾料的阻力引起。

關鍵詞:氣體污染物;化學過濾器;夾碳布;阻力;阻力系數;濾速

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

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