乳化液膜法处理模拟甲苯废气实验研究  

Study on absorption of simulated toluene-containing exhaust gas with emulsion liquid membrane.

作　　者：梅敏雅[1] 张浩哲[1] 金一中[1] 

机构地区：[1]浙江大学环境工程研究所,浙江杭州310027

出　　处：《浙江大学学报（理学版）》2010年第5期551-555,共5页Journal of Zhejiang University（Science Edition）

基　　金：国家自然科学基金资助项目(20670122)

摘　　要：使用以煤油为油相,Span-85为表面活性剂制取的乳化液吸收甲苯废气,考察了表面活性剂浓度、进口甲苯气体浓度及喷淋液气比对吸收效率的影响,实验在填料塔中进行.结果表明,表面活性剂浓度小于2%时,表面活性剂对吸收效果影响较小,而大于2%时,随着浓度的增大吸收效率有明显的减小;进口甲苯浓度在300~900 mg.m-3的范围内,吸收效率随着甲苯浓度的提高而提高;喷淋液气比在3.0~5.0 L.m-3范围内,吸收效率随着液气比的增大而提高.在选择合适的乳化液及喷淋液气比基础上,处理浓度为300~900 mg.m-3低浓度甲苯废气,吸收效率可达85%以上.Using emulsion liquid membrane（ELM） which used kerosene as oil phase and Span-85 as surfactant condition of low concentrations of toluene carried out in the packing column surfactant concentration,import toluene concentration and liquid-gas ratio were investigated as affecting factors.The results showed that when the surfactant concentration is less than 2%,the effect of surfactants on the absorption is not obvious,but more than 2% and with the increase of the concentration,the absorption rates significantly decreased;the absorption rates increased with the increase of imports of toluene concentration or liquid-gas ratio.In selecting emulsion liquid membrane（ELM） and liquid-gas ratio,dealing with the concentration of 300~900 mg·m-3 of low concentrations of toluene,the removal rate can reach to 85%.

关 键 词：乳化液膜 稳定性 甲苯 填料塔 吸收 

分 类 号：X701[环境科学与工程—环境工程]