烟气氨法脱硫中氨逃逸及副产物氧化问题的探究  

Ammonia escape and oxidation of by-product in process of ammonia desulfurization from flue gas

作　　者：马振[1] 万皓[2] 

机构地区：[1]上海大学环境与化学工程学院,上海200444 [2]上海大学能源管理办公室,上海200444

出　　处：《现代化工》2016年第2期125-129,共5页Modern Chemical Industry

基　　金：国家高技术研究发展计划(863计划)资助项目(2009AA064102)

摘　　要：采用单因素实验分析法探讨了氨法脱硫中氨逃逸的控制问题,在烟气温度为90℃,吸收液质量分数为1%,液气比L/G为5的工艺条件下,尾气中氨逃逸量可以得到有效的抑制,烟气出口NH_3质量浓度为19 mg/m^3,同时脱硫效率高达95%以上。详细比较不同Co SO_4催化剂浓度下亚硫酸铵的氧化效果,并采用正交实验分析后得出在Co SO_4催化作用下,(NH_4)_2SO_3的最佳氧化工艺参数(NH_4)_2SO_3初始浓度为1.35 mol/L,反应温度为50℃,p H为4。The single factor experiment method is used to study the control of ammonia escape in ammonia desulfurization process. When flue gas temperature is 90℃, mass fraction of absorption solution is 1% and L/G is 4, the amount of ammonia in the tail gas can be effectively inhibited. The concentration of NH3 in exit flue is 19 mg/m3 and desulfurization efficiency is more than 95%. Detailed analysis has been given for the effect of oxidation of ammonium sulfite in different catalyst concentrations. After the analysis of the orthogonal results, it is concluded that under the catalysis of cobalt sulfate, the optimum oxidation parameters for ammonium sulfite are as follows： 1.35 mol/L of concentration of （NH4 ）2SO3,4 of pH and 50℃ of reaction temperature.

关 键 词：氨法脱硫 氨逃逸 脱硫效率 亚硫酸铵 氧化率 

分 类 号：X701.3[环境科学与工程—环境工程]