微纳米气泡对实际烧结烟气中NOX和SO2催化氧化吸收的研究

Study on catalytic oxidation absorption of NOX and SO2 in practical sintered flue gas by micro-nano bubbles

前人研究表明利用微纳米气泡发生器将水、空气和NO混合产生微纳米气泡气液体系用于NO吸收的效率很好,在此基础上研究微纳米气液分散体系对实际烧结烟气是否也能达到良好的吸收效果。结果表明,1.00 g烧结料与1.23 g NaNO2燃烧产生的烧结烟气经微纳米气泡机在进水pH=5的条件下,NOX的吸收效率可以达到59.3%,SO2几乎全部被吸收。在水相中加入Mn^2+且其摩尔浓度为2 mmol/L时,NOX的吸收效率能达到71.7%。而聚氯乙烯塑料的添加则会对NOX的吸收效率造成反向影响。

Previous studies have shown that the mixing of water,air and NO by micro-nano bubble generator can produce micro-nano bubble gas liquid system for NO absorption with good efficiency.On this basis,this paper studies whether micro-nano gas-liquid dispersion system can achieve good absorption effect on the actual sintered flue gas.The results showed that the absorption efficiency of NOX from 1.00 g sinter and 1.23 g NaNO2 through the micro-nano bubble machine could reach 59.3%under the condition of pH=5 in the water,and almost all SO2 was absorbed.The absorption efficiency of NOX reached 71.7%when Mn^2+ was added to the aqueous phase with a molar concentration of 2 mmol/L.However,the addition of polyvinyl chloride plastics will have a negative effect on the absorption efficiency of NOX.