研究报告
魏恩宗.电晕氧化结合化学吸收脱除烟气中NO2实验研究[J].环境科学学报,2004,24(6):1074-1078
电晕氧化结合化学吸收脱除烟气中NO2实验研究
- Experimental study on the removal of NOx from flue gases by corona oxidation in conjunction with chemical absorption
- 基金项目：国家"863"计划资助项目(2002AA529180);博士点基金资助项目(20020335061);浙江省科技计划项目(2003201509)
- 作者
- 单位
- 魏恩宗
- 浙江大学能源洁净利用与环境工程教育部重点实验室,杭州310027
- 摘要：实验研究了直流电晕湿空气自由基簇射结合25%的NaOH溶液吸收的NOx脱除过程。 结果表明:通过调节流过喷嘴电极中的空气流量, 可以得到稳定的流光电晕; 空气中水蒸汽对NOx脱除效率有影响; 在反应器内同时有HNO2和HNO3生成; 实验工况下, 反应器NOx转化率45%以上, 经吸收液吸收后系统总脱氮效率可达70%。
- Abstract：With moist air as the radical source, an experimental study was carried out for the removal of NOx from flue gases by a DC corona discharge activated radical shower in conjunction with alkali solution (25% by weight of NaOH in water) scrubbing. The results of the study showed that a steady streamer corona could be obtained by adjusting the flow rate of the moist air fed into the nozzle electrode; the vapor in the moist air exerted an influence on the efficiency of NOx removal; both HNO2 and HNO3 were simultaneously generated in the reactor with NOx conversion rate being higher than 45%, and the overall efficiency of NOx removal in the system can reach 70% after alkali solution scrubbing under the experimental conditions.
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