活性炭纤维净化装置对室内污染气体去除效果的研究

发布时间：2018-01-15 04:15

本文关键词：活性炭纤维净化装置对室内污染气体去除效果的研究　出处：《建筑科学》2016年12期 　论文类型：期刊论文

【摘要】：由于活性炭纤维(Activated carbon fiber,ACF)具有较发达的比表面积、较窄的空隙分布和较强的吸附性能。故本文通过沥青基活性炭纤维过滤器及过滤器加粉尘过滤器组成的净化装置在体积为53 m~3的实验间内对污染气体SO_2、NO_x及CO的净化效果进行了试验研究。研究结果表明:1)在一定时间内(20 min),沥青基活性炭纤维过滤器对SO_2和NO_x的去除效果在同一浓度不同风量下存在着最高去除率及相对应的最佳风量226 m~3/h。且整体试验装置在过滤风量为180~260 m~3/h范围内,对SO_2、NO_x去除效果最佳。2)装置在最佳风量下,对不同浓度SO_2、NO_x的去除都有随浓度升高而增加的趋势,但当浓度升到某一定值后,浓度再升高,效率却有所降低,其对SO_2、NO_x的去除存在最佳浓度范围。3)在试验浓度范围内,装置对SO_2的总去除率达86%以上,对NO_x的总去除率达80%以上,去掉自然衰减后的净去除率达71%和67%,且对低浓度的SO_2和NO_x也有较好的去除效果;但对CO几乎无吸附过滤作用。
[Abstract]:Activated carbon fiber (ACF) has developed specific surface area. It has a narrow void distribution and a strong adsorption property. Therefore, the volume of the purifying device is 53. 3 by using the bituminous activated carbon fiber filter and filter plus dust filter. MCA3 was used in the laboratory to study the effect of SO_2 on the polluted gas. The purification effect of NO_x and CO was studied. The results showed that the concentration of NO_x and CO was 20 mins in a certain time. Removal efficiency of SO_2 and NO_x by Asphalt based activated carbon Fiber filter under the same concentration and different air volume, there exists the highest removal rate and the corresponding optimum air volume 226. And the overall test facility is in the range of 180 to 260 mm2 / h. At the optimum air volume, the removal of so _ 2O _ x at different concentrations has a tendency to increase with the increase of the concentration. However, when the concentration reaches a certain value, the concentration increases again, but the efficiency decreases, and the optimum concentration range of SO2NOx removal is in the range of experimental concentration. The total removal rates of SO_2 and NO_x are more than 86% and 80% respectively, and the net removal rates after natural attenuation are 71% and 67% respectively. And the removal efficiency of SO_2 and NO_x is better than that of low concentration SO_2 and NO_x. However, there is almost no adsorption and filtration for CO.
【作者单位】：北京建筑大学;
【基金】：国家自然科学基金项目室内香烛燃烧产生的多环芳烃的散发特征、分配规律及暴露风险”(51378043) 甘肃省自然科学基金项目“室内尘埃运动特性及沉积机理研究”(3ZS042-B25-037)
【分类号】：TU834.8
【正文快照】： 0引言活性炭纤维(Activated carbon fiber,ACF)是继粉状、粒状活性炭之后于20世纪70年代发展起来的新型功能吸附材料。由于ACF具有较发达的比表面积和较窄的空隙分布(存在着大量直径为2 nm左右的微孔),因此具有较强的吸附特性。可根据需要制成毯、布、纸等各种形态,适用于多种

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