高效液相吸收剂同时脱硫脱硝的实验研究  

Experimental Study on the Simultaneous Removal of SO_2 and NO by High Efficiency Liquid Absorbent

作　　者：辛志玲[1] 张金龙[1] 张大全[1] 肖文德[2] 

机构地区：[1]上海电力学院能源与环境工程学院,上海市杨浦区200090 [2]华东理工大学联合化学反应工程研究所,上海市徐汇区200237

出　　处：《中国电机工程学报》2009年第17期76-82,共7页Proceedings of the CSEE

基　　金：上海市自然科学基金项目(08ZR1408800);上海市重点学科建设项目(P1304);上海市高校电力腐蚀控制与应用电化学重点实验室资助项目

摘　　要：采用乙二胺合钴溶液作为吸收液,在双驱动搅拌反应器内,对模拟烟气进行湿法烟气同时脱硫脱硝的实验研究。主要考察在SO2存在的条件下,SO2的浓度、温度、NO的浓度、O2的浓度和pH值等因素对NO吸收速率的影响。研究表明:气相中SO2的存在不利于NO的吸收;NO的吸收速率随乙二胺合钴浓度的增加而增大;气相中氧的存在有利于提高NO的吸收速率;NO吸收的最佳温度是50℃;溶液的pH值是影响NO吸收的主要因素,最佳pH值为12.9,对于高浓度的乙二胺合钴溶液,溶液的pH值对NO吸收速率的影响显著。Simultaneous removal on SO2 and NO from simulating flue gas with aqueous ethylenediaminecobalt solution was studied in a stirred reactor. Factors influencing the NO absorption rate, such as pH, temperature, oxygen concentration and SO2 concentration were investigated in the presence of SO2. The experiment results show that SO2 is harmful to NO absorption. NO absorption rate increases with increasing [Co（en）3]2＋ and oxygen concentration, but decreases with increasing SO2 concentration. The optimal temperature is 50℃ for NO absorption, pH value is a very important operation condition for the NO removal. The optimal pH value is 12.9, pH value affects markedly on the NO absorption rate for higher concentration of [Co（en）3]2＋.

关 键 词：乙二胺合钴 脱硫 脱硝 吸收速率 烟气 

分 类 号：X511[环境科学与工程—环境工程]