摘要
选用比表面积为931 m^(2)/g的活性炭纤维,考察其吸附二氯甲烷后水蒸气再生效果,两次再生均较为彻底;活性炭纤维对于水的吸附能力强于二氯甲烷,在竞争吸附中处于优势地位,进气湿度为66.6%RH,活性炭纤维对于二氯甲烷的吸附容量仅为进气湿度为30.2%RH时的71.9%。考察活性炭纤维吸附-水蒸气脱附工艺在医药行业的应用,结果表明,在进气湿度较高的情况下,废气中含有二氯甲烷、三氯甲烷、乙酸乙酯、丙酮等物质时,二氯甲烷在竞争吸附中处于弱势,成为制约废气达标排放的重要因素。
Activated carbon fiber with specific surface area of 931 m^(2)/g was selected to investigate the effect of water vapor regeneration after adsorption of dichloromethane.Both regenerations were complete.The adsorption capacity of water on activated carbon fiber was batter than that of dichloromethane,and it was in a dominant position in competitive adsorption.When the inlet humidity was 66.6%RH,the adsorption capacity of activated carbon fiber for dichloromethane was only 71.9%of the inlet humidity was 30.2%RH.The application of activated carbon fiber adsorption-steam desorption process in the pharmaceutical industry was investigated.The results show that when the intake air humidity was high and the waste gas contained dichloromethane,chloroform,ethyl acetate,acetone and other substances,dichloromethane was in a weak position in competitive adsorption,which had become an important factor restricting the emission of waste gas up to standard.
作者
金小贤
徐遵主
张纪文
孙静静
陆朝阳
Jin Xiaoxian;Xu Zunzhu;Zhang Jiwen;Sun Jingjing;Lu Zhaoyang(Jiangsu Province Engineering Research Center of Regional Watershed Envionment Treatment Technology, Academy of Environmental Planning & Design Co., Ltd., Nanjing University, Nanjing 210093, China;Jiangsu Province Engineering Research Center of Air Pollution Control, Academy of Environmental Planning & Design Co., Ltd., Nanjing University, Nanjing 210093, China)
出处
《环境科学与管理》
CAS
2022年第5期96-99,共4页
Environmental Science and Management
关键词
活性炭纤维
二氯甲烷
吸附
水蒸气再生
湿度
activated carbon fiber
dichloromethane
adsorbent
steam regeneration
humidity
