鼓泡塔中SO2和CO2对钴氨络合物脱硝效率的影响  

Effect of SO2 and CO2 on NO removal efficiency by the hexamminecobalt（Ⅱ）complex in a bubble column

作　　者：刘振[1] 李清海[1] 朱群益[2] 谭中超 张衍国[1] LIU Zhen;LI Qinghai;ZHU Qunyi;TAN Zhongchao;ZHANG Yanguo(Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy ＆ Environment Technology,Key Laboratory of Thermal Science and Power Engineering of Ministry of Education,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China;School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China;Department of Mechanical and Mechatronics Engineering,University of Waterloo,Waterloo N2L3G1,Canada)

机构地区：[1]清华大学能源与动力工程系,热科学与动力工程教育部重点实验室,清华大学-滑铁卢大学微纳米能源环境联合研究中心,中国北京100084 [2]哈尔滨工业大学能源科学与工程学院,中国哈尔滨150001 [3]滑铁卢大学机械和机电一体化工程系,加拿大滑铁卢N2L3G1

出　　处：《清华大学学报（自然科学版）》2018年第9期814-820,共7页Journal of Tsinghua University(Science and Technology)

基　　金：国家国际科技合作专项资助(2015DFG61910);国家自然科学基金项目(91434119);加拿大安大略省-中国研究创新基金资助项目(OCRIF 2014)

摘　　要：为了研究烟气中的SO2、CO2及其与氨反应生成的SO3^2-和CO3^2-对钴氨络合物脱硝效率的影响,搭建了钴氨络合物脱硝的鼓泡反应实验装置。通过改变烟气中SO2和CO2的浓度研究SO2和CO2对脱硝效率的影响;通过向钴氨溶液中加入不同浓度的SO3^2-和CO3^2-离子,研究SO3^2-和CO3^2-对脱硝效率的影响。实验结果表明：烟气中的SO2和CO2会降低NO的吸收率,当烟气中同时含有质量浓度为100g/m3的CO2和质量浓度为2 646mg/m3的SO2时,NO的吸收率降幅为46%;溶液中生成的SO3^2-和CO3^2-会降低NO的吸收率,当溶液中SO3^2-的摩尔浓度达到0.03mol/L时,NO的吸收率降幅为72%;当溶液中CO3^2-的摩尔浓度达到0.50mol/L时,NO的吸收率降幅为41%。The effects of SO2 and CO2 in the flue gas and their reaction products with ammonia,SO3^2- and CO3^2-,on the NO removal efficiency of the hexamminecobalt（II）complex were studied experimentally using a bubble column reactor with the hexamminecobalt（II）complex absorbing NO.The effects of SO2 and CO2 on the NO removal efficiency were studied using various SO2 and CO2 concentrations in the flue gas withthe effects of SO3^2- and CO3^2- on the NO removal efficiency studied with various concentrations of SO3^2- and CO3^2- into the hexamminecobalt（II）solution.The experimental results show that SO2 and CO2 in the flue gas reduce the NO removal efficiency with the NO removal efficiency reduced 46%for a CO2 mass concentration of 100 g/m3 and an SO2 mass concentration of 2 646 mg/m3.The SO2-23 and CO-3 formed in the solution also reduce the NO removal efficiency.The NO removal efficiency is reduced by 72% for an SO3^2- molarity of 0.03 mol/L and by 41% for a CO3^2- molarity of0.50 mol/L.

关 键 词：脱硝效率 鼓泡塔 钴氨络合物 

分 类 号：X511[环境科学与工程—环境工程]