等离子体联合动力波技术协同控制铅锌冶炼烟气中Hg、SO_2、NO_x实验研究  

Experimental Research on Synergistic Control Technology of Hg, SO_2 and NO_x in Lead and Zinc Smelting Fume by Plasma with Dynamic Wave Technology

作　　者：竹涛[1,2] 马名烽 李冉冉[1,2] 陈锐[1,2] 周金兰[1,2] 

机构地区：[1]煤炭资源与安全开采国家重点实验室,北京100083 [2]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《高电压技术》2016年第2期384-391,共8页High Voltage Engineering

基　　金：新世纪优秀人才支持计划(NCET120967);国家自然科学基金(51108453);北京市优秀人才培养资助项目(2012ZG81);煤炭资源与安全开采国家重点实验室开放基金;中央高校基本科研业务专项基金(2009QH03)~~

摘　　要：为了实现同时控制铅锌冶炼行业排放的汞(Hg)等重金属、二氧化硫(SO2)和氮氧化物(NOx)的目的,采用低温等离子体结合动力波湿法吸收技术对烟气中的单质汞(Hg0)、SO2和NOx进行了协同控制研究。首先利用低温等离子体放电技术研究了电压、氧气(O2)体积分数、污染物停留时间、Hg0初始质量浓度以及SO2和NO体积分数的变化对Hg0去除效率的影响,同时研究了电压以及SO2和NO初始体积分数对SO2和NO去除效率的影响,然后研究了低温等离子体结合动力波湿法脱除系统对Hg0、SO2和NO这3种污染物协同脱除的效果。结果表明,低温等离子体结合动力波湿法脱除系统对烟气中Hg0、SO2和NO的排放可起到高效协同脱除的效果,其去除效率分别达到51.3%、98%和50.9%。该技术不仅适用于有色冶炼烟气多种污染物协同脱除控制,而且同样适用于燃煤烟气,对于实现煤化石能源的高效清洁利用具有重要巨大的应用前景和深远的现实意义。In order to control emissions of mercury （Hg）, sulfer dioxide （SO2）, and nitrogen oxides （NOx） from lead and zinc smelting industry, we researched the synergistic control of elemental mercury （Hg0）, SO2, and NOx using the non-thermal plasma （NTP） combined with dynamic wave wet absorption technology in flue gas. We studied the effects of voltage, oxygen volume fraction, retention time, initial mass concentration and SO2, NO volume fraction on Hg0 removal efficiency. Moreover, the influence of voltage and initial volume fraction on SO2 and NO removal efficiency were studied using the non-thermal plasma. The synergistic technology of NTP with dynamic wave wet absorption was adopted to study the removal efficiency of three pollutants of Hg0, SO2, and NO together. The synergistic removal efficiency of Hg0, SO2, and NO could reach51.3%, 98%, and 50.9% using NTP combined with dynamic wave wet removal system, respectively. A conclusion can be drawn that the application of this technology is suitable for not only a variety of non-ferrous smelting gas pollutants synergy removal control, but also coal-fired flue gas. It is important to realize the efficient clean utilization of coal and fossil energy, and has huge application prospect and far-reaching practical significance.

关 键 词：铅锌冶炼烟气 低温等离子体 动力波 Hg0 SO2 NOx 多种污染物协同控制 

分 类 号：X758[环境科学与工程—环境工程]