Emission characteristics of Cl2 and ClO2 during simultaneous removal of SO2 and NO using NaClO2 solution

3rd International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Tang, Z.J.^1 ; Fang, P.^1 ; Huang, J.H.^1 ; Zhong, P.Y.^1

South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou

510655, China^1

关键词: Absorption columns;    Continuous sampling;    Emission characteristics;    Experimental apparatus;    Simultaneous removal;    Theoretical calculations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/113/1/012148/pdf
DOI  :  10.1088/1755-1315/113/1/012148

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this study, an experimental apparatus of oxidation + absorption columns was set up to investigated ClO2and Cl2emission characteristics when NaClO2was used as oxidant. Two sets of experiments were designed and compared, one was sampled every 15 min for 2 h and the other one was continuous sampling for 2 h. The results show that the concentration of ClO2in the outlet of oxidation column increased first and then decreased while Cl2barely changed during the experiment. The concentration of Cl2was far less than ClO2, which indicated that the chlorine-containing gaseous component was mainly in the form of ClO2. After 2 h reaction, the chlorine-containing ions in oxidation liquid before and after reaction were in good consistence with the theoretical calculation. High concentration of Cl-was detected in the absorption liquid, while no ClO2-and ClO3-existed. As the reaction proceeded, the oxidation liquid gradually turned into light yellow, and pungent odor released.