摘要
实验分析探讨了FeSO4溶液对氮氧化物（NOx）的吸收去除机理，并考察了Fe^2＋初始质量分数、混合气中O2体积分数、NOx初始质量浓度和气液接触时间对NOx去除率的影响。结果表明，FeSO4吸收液在吸收初期对NOx表现出了较好的吸收去除效果。Fe^2＋初始质量分数越高、O2体积分数越大、NOx初始质量浓度越低、气液接触时间越长，NOx的去除率就越高。在吸收剂中Fe^2＋质量分数为4%、模拟废气中O2体积分数为34.9%的条件下，FeSO4吸收液对NOx初始质量浓度为2700mg·m^-3的废气进行吸收去除时，在吸收反应初期阶段，NOx的去除率可以达到80%以上。
A novel technique of flue gas denitrification using FeSO4 solution was studied. The mechanism of denitrification was discussed, and the effects of the initial concentrations of Fe^2＋, NOx and O2, together with gas-liquid contact time on the removal efficiency of NOx were also investigated. The results showed that the FeSO4 solution had a high removal efficiency at the early stage. In addition, the removal efficiency of NOx was increased with the increasing of gas-liquid contact time, initial concentrations of Fe^2＋, O2, and the decreasing of initial NOx concentration. When the initial concentration of NOx was 2700 mg·m^3, the initial Fe^2＋ concentration was 4%, and the O2 concentration was 34.9%, the NOx removal efficiency reached over 80% at the early stage.
出处
《生态科学》
CSCD
2009年第2期164-168,共5页
Ecological Science
基金
基金项目：广东省科技计划项目（2007A04010003）
