焦炉烟气钢渣湿法联合脱硫脱硝试验研究(4)

2)浆液浓度升高会增大体系pH值，促进NO脱除；烟气流量增加，即停留时间降低会减少气液接触时间，导致脱硫脱硝效率降低，因此在考虑处理成本的同时应增加停留时间。

3)实验室最优反应条件下(温度30 ℃，浆液浓度8%，烟气流量400 mL/min)，脱硝率为50.7%，脱硫率高于95%。

4)NOx的脱除主要是钢渣浆液吸收了NO与O2反应生成的NO2，以及NO2与NO结合的N2O3。通过气相预氧化将部分NO氧化为NO2，然后NO2以及剩余的NO和NO2结合的N2O3可被钢渣浆液快速高效的吸收。

5)现有钢渣脱硫脱硝技术的脱硝效率偏低，通过强化脱硝手段，可实现NOx排放达标甚至超低排放标准，有利于钢渣湿法联合脱硫脱硝的工程化应用。

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