活性炭纤维脱除SO_2/NO_x/H_g中传递过程的影响  

Study of the influence of transport process on removal in SO_2/NO_x/Hg by activated carbon fibers

作　　者：许绿丝[1] 曾汉才[2] 曾伟[3] 

机构地区：[1]华侨大学材料科学与工程学院,福建泉州362021 [2]华中科技大学煤燃烧国家重点实验室,湖北武汉430074 [3]华中科技大学系统工程研究所,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2008年第9期129-132,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50376017);福建省自然科学基金资助项目(D0810017);华侨大学科研基金资助项目(05y0003)

摘　　要：为解决活性炭纤维(ACF)同时低温吸附氧化脱除SO2/NOx/Hg时传递过程对脱除率的影响问题,通过实验和数学模型相结合的方法,研究了传递过程对脱除污染物宏观反应速率的影响,并将ACF与颗粒活性炭(GAC)的传递过程影响进行了比较.认为温度的影响对于ACF和GAC都可以忽略;当ACF表面流速大于0.113 m/s,GAC表面流速大于0.2 m/s时,外扩散的影响可以忽略;ACF内扩散的影响可以不考虑,而GAC不能忽略.Activated carbon fibers （ACF） and granulated activated carbon （GAC） were used for adsorption and oxidation removal of SO2/NOx/Hg at low-temperature. The reaction rate of removal pollutants was influenced by transport process. According to the data attained from experiments and math models, the influence of transport process on removal of SO2/NOx/Hg was studied, and the transport process in ACF were compared with those of GAC. The influence of temperature on macrorate can be neglected to ACF and GAC. When the flow speed on outside the surface of ACF was more than 0. 113 m/s and that of GAC was more than 0.2 m/s, the influence of outside diffusion on macrorate can be neglected. The influence of inside diffusion on macro-rate can be neglected to ACF but not to GAC.

关 键 词：活性炭纤维(ACF) 颗粒活性炭(GAC) 宏观反应速率 传递过程 低温吸附氧化 

分 类 号：X511[环境科学与工程—环境工程]