作者：赵毅；仇稳；杨丽娟；王佳男

第一作者单位：华北电力大学环境科学与工程学院

摘要：针对煤燃烧过程中微量砷的排放对环境产生的危害,以KMnO₄溶液作为吸收液,在自行设计的小型鼓泡反应器内进行了KMnO₄溶液氧化脱除烟气中砷的实验。分别考察了KMnO₄溶液初始浓度、吸收溶液初始pH、反应温度、SO₂质量浓度、NO质量浓度、O₂体积分数和CO₂体积分数对砷脱除性能的影响。结果表明,当KMnO₄溶液浓度为10 mmol/L、溶液pH为5、反应温度为50℃、烟气中砷的质量浓度为427μg/m³时,应用KMnO₄溶液脱砷是可行的,且对砷的脱除效率可达到82.4%。

Abstract：In view of the environmental pollution and the harm on human health of trace arsenic during combustion, arsenic removal from simulated flue gas was studied in a self-designed bubbling reactor with KMnO₄solution as the absorbents. The influence of KMnO₄concentration, initial solution pH value, reaction temperature, SO₂concentration, NO concentration, O₂content and CO₂content on the removal of arsenic were investigated respectively. The results show that the arsenic removal by using KMnO₄solution is available. The efficiency of arsenic removal could reach by 82. 4% under the optimal conditions in which the initial concentration of arsenic was 427 μg/m³, KMnO₄solution was 10 mmol/L, pH value was 5 and the reaction temperature was 50℃.

基金：国家863计划项目(2013AA065403)；华北电力大学中央高校基金资助项目(2016XS114)；

关键词：大气污染防治工程;模拟烟气;高锰酸钾;脱砷;

DOI：10.16186/j.cnki.1673-9787.2017.06.013

分类号：X701