臭氧水-H2O2-金属离子联合液相氧化SO2的实验研究

为探讨金属离子浓度、液气比与SO2质量浓度对SO2脱除效果的影响,采用液相氧化方法吸收氧化烟气中的SO2,提出臭氧水-H2O2-金属离子联合液相氧化烟气中SO2的方法.分别研究臭氧水、金属离子、H2O2溶液、液气比、pH和SO2质量浓度等参数下SO2脱除效率.在臭氧质量浓度为1.32 g/m3的臭氧水中分别加入Mn2＋、Al3＋、Zn2＋、Fe2＋、Cu2＋五种离子与H2O2溶液构成吸收氧化剂,结果表明：臭氧水-H2O2-Mn2＋吸收氧化剂的SO2的脱除率明显高于其他类型.在Mn2＋浓度0.01 mol/L、H2O2浓度0.01 mol/L、液气比7 L/m3、pH=7的条件下,SO2的去除率为94.7％.

Experiment on combination of ozone water-H2O2-metal ion with SO2 in liquid-phase oxidized smoke

This paper gives an improved method of combining ozone water-H2 O2-mental ion with SO2 in liquid-phase oxidized smoke as part of the efforts to study the effect of metal ion concentration, liquid- gas ratio, and SO2 mass concentration on SO2 removal effect. The method works by using the liquid-phase oxidation method to absorb SO2 in oxidized smoke. The study looks at SOz removal efficiency, as condi- tioned by such parameters as ozone water, metal ion, H2 O2 solution, liquid-gas ratio, pH values and SO2 mass concentration, etc. The addition of five ions consisting of Mn2 ＋ , A13 ＋ , Zn2 ＋ , Fe2 ＋ and Cu2 ＋ into ozoiae water with ozone mass concentration of 1.32 g/m3 to produce an absorption oxidizing agent with the H2 02 solution points to the obvious advantage of the SO2 removal rate of ozone water-H2 O2-Mn2＋ absorption oxidizing agent over those of other types. The SO2 removal rate of 94.7% is afforded by the presence of Mn2＋ concentration of 0.01 tool/L, H202 concentration of 0.01 mol/L, and liquid-gas ratio of 7 L/m3 and pH = 7.