NaClO_2/NaClO复合吸收液同时脱硫脱硝试验反应机制研究  

Investigation on the mechanism of simultaneous desulfurization and denitrification by NaClO_2/NaClO compound absorbent

作　　者：杨一理[1] 严金英[1] 张朋[1] 许红檑[1] 潘理黎[1] 

机构地区：[1]浙江工业大学生物与环境工程学院,浙江杭州310014

出　　处：《环境污染与防治》2012年第10期71-75,81,共6页Environmental Pollution & Control

基　　金：浙江省科技计划项目(No.2010C33069)

摘　　要：燃煤烟气多污染物一体化控制是当前研究的重点,NaClO2/NaClO复合吸收液同时脱硫脱硝技术脱硫率、脱硝率高,但反应机制比较复杂。通过一系列试验对其反应机制进行了初步探索。结果表明,NaClO2和NaClO自身的分解、NaClO2与NaClO之间反应产生的ClO2和Cl2起主要氧化剂的作用,在吸收过程中能大大提高脱硫率和脱硝率,尤其对脱硝率的提高特别明显。在试验的基础上,推测了NaClO2与NaClO在酸性条件下可能发生的反应过程。Abstract： Integrated control of the multi-pollutant in coal-fired flue gas has become the research focus in now days. NaClO2/NaClO compound absorbent solution presented perfect SO2 and NO removal efficiency, while the reaction mechanism was very complex and still unknown. Series experiments were conducted to do a tentative exploration in the reaction mechanism of simultaneous desulfurization and denitrification by NaClO2/NaClO compound absorbent solution. Results showed that ClO2 and Cl2 were produced in the process of NaClO2, NaClO decomposition and reaction; they play a role as major oxidant in the absorption process and could greatly improve the efficiency of denitrification. The reaction process between NaC10 and NaC102 under the acidic conditions was also speculated.

关 键 词：燃烟煤气 同时脱硫脱硝 NaClO2/NaClO复合吸收液 反应机制 

分 类 号：X701[环境科学与工程—环境工程]