钙基吸收剂液相氧化法协同脱硫脱硝试验  

Simultaneous Absorption of SO_2 and NO from flue gas with CaCO_3 and liquid phase oxidation

作　　者：白云峰[1,2] 李永旺[2] 吴树志[2] 刘鹏程[2] 高翔[1] 骆仲泱 岑可法[1] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室,杭州310027 [2]北京博奇电力科技有限公司,北京100022

出　　处：《环境科学学报》2009年第3期505-510,共6页Acta Scientiae Circumstantiae

基　　金：国家重点基础研究计划项目(973)资助项目(No.2006CB200303)~~

摘　　要：采用CaCO3作为吸收剂,利用单隔板喷射鼓泡实验装置研究了NaClO2作为氧化剂的协同脱硫脱硝效果,并与KMnO4进行了对比.考察了不同试验条件对NO和SO2脱除效率的影响.实验结果表明,同等条件下NaClO2的脱硫脱硝效果优于KMnO4;低pH值有利于NaClO2氧化脱硝,但对于KMnO4氧化脱硝,pH值无明显影响;提高SO2浓度或降低NO浓度均可提高NO脱除效率,NaClO2的氧化脱硝特性较KMnO4显著;提高氧化剂加入量和喷射管浸没深度均可以提高脱硫脱硝效率.Systematic comparative experiments on simultaneous flue gas desulfurization and denitrification were conducted with CaCO3 as the sorbent and with NaClO2 and KMnO4 as oxidants. The influences of different experimental conditions on the removal efficiencies of SO2 and NO were examined. Experimental results show that NaClO2 gives better desulfurization and denitrification results than KMnO4 under the same conditions. Lower pH is beneficial to denitrification oxidized with NaClO2 , but it has no significant impact on denitrification with KMnO4. NO removal efficiency can be improved by increasing SO2 concentration or decreasing NO concentration, more notably for the oxidant NaClO2 than KMnO4. Increasing the feeding amount of oxidant or the depth of jet tubes immersed into the sorbent results in a rise in the removal efficiencies of SO2 and NO.

关 键 词：NaClO2 KMNO4 CACO3 NO SO2 协同脱除 

分 类 号：X701.3[环境科学与工程—环境工程]