提高柠檬酸钠净化甲苯废气效率的实验研究  

Experiment Study on Enhancing Treatment of Waste Gas Containing Toluene by Sodium Citrate Solution Absorbent

作　　者：陈定盛[1] 岑超平[1] 曾环木[1] 

机构地区：[1]环境保护部华南环境科学研究所,广东广州510655

出　　处：《环境科学与技术》2009年第2期28-31,共4页Environmental Science & Technology

基　　金：广东省科技计划项目重大专项(2004A10403011;2007A032301001);粤港关键领域重点突破项目(东莞专项2007168502)

摘　　要：以柠檬酸钠溶液为吸收剂,添加三种不同的添加剂在填料塔中进行了吸收法净化含甲苯有机废气的实验研究。在相同的工艺条件下,分别研究了添加柠檬酸,无机盐助剂、聚乙二醇(PEG200)以及三者的组成对柠檬酸钠吸收剂去除甲苯效果的影响。实验结果表明,当5%柠檬酸钠吸收剂分别添加柠檬酸时pH=6,无机盐0.05%硅酸钠、0.1%磷酸钠和0.1%碳酸钠,0.5%聚乙二醇时,对甲苯净化效率及吸收容量都有显著提高。当三种添加剂组合时效果更佳。Influence of three different additives on treatment of waste gas with toluene using sodium citrate solution was studied in structured packing columns. Adding of citric acid, inorganic salt, polyethylene glycol （PEG200） and their combinations to sodium citrate solution to enhance absorption efficiency was studied under similar conditions respectively. Results showed that purification efficiency and absorption capacity of toluene significantly increased when 5% sodium citrate absorption liquid added citric acid which make pH 6, or inorganic salt 0.05% sodium silicate, 0.1% sodium phosphate, 0.1% sodium carbonate and 0.5% polyethylene glycol respectively. It will have a better result when additives used together.

关 键 词：吸收法 甲苯 柠檬酸钠 无机盐 聚乙二醇 

分 类 号：X701[环境科学与工程—环境工程] X131.1