您的位置:首页  > 论文页面

蜂窝状Y-ZSM-5复合型分子筛对苯的吸附性能

发表时间:2011-12-31  浏览量:1697  下载量:447
全部作者: 魏冰,栾志强,王喜芹,李凯,叶平伟,解强
作者单位: 中国矿业大学(北京)化学与环境工程学院;防化研究院第一研究所
摘 要: 采用高温水蒸汽处理及酸洗的方法将蜂窝状Y-ZSM-5复合分子筛进行疏水改性,对改性后的蜂窝分子筛进行苯吸/脱附实验,考察相对湿度(relative humidity,RH)、床层高度对穿透性能的影响,并利用希洛夫方程对床层饱和吸附量和吸附速率常数进行计算。结果表明:气流相对湿度由0提高到80%,穿透时间缩短65.4%,达平衡时间缩短58.8%;9 cm以下床层可瞬间透过,10 cm以上床层具备超过50 min有效工作时间,床层高度增加不影响穿透曲线的形状。
关 键 词: 环境工程;蜂窝状;Y-ZSM-5复合分子筛;苯;吸附;穿透曲线
Title: Adsorption of benzene onto honeycomb-shaped Y-ZSM-5 compound zeolite
Author: WEI Bing, LUAN Zhiqiang, WANG Xiqin, LI Kai, YE Pingwei, XIE Qiang
Organization: School of Chemical And Environment Engineering, China University of Mining and Technology (Beijing); First Research Institute of Chemical Defense
Abstract: By using high temperature steam treatment and pickling method, honeycomb-shaped Y-ZSM-5 compound zeolite adsorbent was hydrophobically modified and it’s adsorption-desorption of benzene was investigated. The influence of the relative humidity (RH) and the bed height on breakthrough curve was researched. Shilov equation was used for calculating the adsorption capacity and adsorption rate constant. The results showed that: when air relative humidity increased from 0 to 80%, the breakthrough time and equilibrium time were respectively shortened by 65.4% and 58.8%; the bed height under 9 cm was instantaneous penetrated, while it could work effectively with more than 50 min at more than 10 cm bed height; the bed height increase didn’t change the shape of breakthrough curve.
Key words: environmental engineering; honeycomb-shaped; Y-ZSM-5 compound zeolite; benzene; adsorption; breakthrough curve
发表期数: 2011年12月第24期
引用格式: 魏冰,栾志强,王喜芹,等. 蜂窝状Y-ZSM-5复合型分子筛对苯的吸附性能[J]. 中国科技论文在线精品论文,2011,4(24):2283-2288.
 
0 评论数 0
暂无评论
友情链接