微纳米气泡耦合FexS催化氧化去除烟气中NO

采用固体废物锍铁化合物（记为Fe_xS）作为催化剂,耦合微纳米气泡催化氧化去除烟气中NO,考察了不同工艺条件下的去除效果,运用XRD、SEM和EDS技术对反应前后的Fe_xS进行了表征,探究了反应机理。实验结果表明,在Fe_xS粒径为0.038~0.053 mm、Fe_xS投加量为5 g、NaCl质量浓度为0.3 g/L、溶液pH为5、进气NO质量浓度为6.7 mg/L的最佳工艺条件下,NO去除率高达95.3%。表征结果显示,反应后的Fe_xS较反应前没有明显的物相变化,Fe_xS表面的微量物质催化了NO的氧化去除。

Removal of NO from flue gas by catalytic oxidation with micro-nano bubbles and FexS

Solid waste Fe_xS was used as catalyst and coupled with micro-nano bubbles to remove NO from flue gas by catalytic oxidation. The removal effects under different process conditions were investigated. Fe_xS before and after reaction were characterized by XRD,SEM and EDS,and the reaction mechanism was explored. The experimental results show that under the optimal process conditions of Fe_xS particle size 0.038~0.053 mm,Fe_xS amount 5 g,NaCl mass concentration 0.3 g/L,solution pH 5 and NO mass concentration in the intake 6.7 mg/L,the removal rate of NO is up to 95.3%. The characterization results show that there is no obvious phase change of Fe_xS after reaction compared with that before reaction because the trace substances on the surface of Fe_xS catalyzed the oxidation removal of NO.