NaOH气液两相滑动弧放电处理含硫废气的研究  

Treatment of Flue Gas Containing Sulfur by Gas-Liquid Phase Gliding Arc Discharge Combined with NaOH

作　　者：杨国清[1,2] 邵朱夏 曹一崧 王德意[1,2] 贾嵘[1,2] Yang Guoqing;Shao Zhuxia;Cao Yisong;Wang Deyi;Jia Rong(State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area Xi’an University of Technology Xi’an 710048 China;Institute of Water Resource and Hydroelectric Engineering Xi’an University of Technology Xi’an 710048 China)

机构地区：[1]西北旱区生态水利工程国家重点实验室培育基地(西安理工大学),西安710048 [2]西安理工大学水利水电学院,西安710048

出　　处：《电工技术学报》2017年第8期114-120,137,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51279161);西北旱区生态水利工程国家重点实验室基金(2016ZZKT-12);陕西省教育厅基金(16JK1562)资助项目

摘　　要：为了提高气液两相滑动弧放电对火电厂废气的处理效率,将传统的纯水液相替换成NaOH溶液。通过观测放电过程中的电压-电流波形和发射光谱,研究加入NaOH对滑动弧放电的电气特性和光学特性的影响。选取SO_2作为待处理废气,对比分析NaOH溶液、纯水液相下SO_2的去除率以及产物浓度随处理时间、气体流速的变化情况,以及NaOH溶液浓度对SO_2去除结果的影响。实验结果表明,相同条件下,NaOH溶液代替纯水液相增强了气液两相放电强度,电离出更为大量的OH自由基;同时,NaOH的加入使SO_2的去除率提高了5%~7%,产物中的SO3含量较纯水液相时降低了50%左右。To improve the efficiency of gas-liquid two-phase gliding arc discharge to treatthermal power plant waste gas,the traditional pure water phase is replaced by NaOH solution.In thisstudy,through the measurements of applied voltage,discharging current and emission spectrum,theinfluence of NaOH on electrical and optical characteristics of the discharge is analyzed.Theconcentration of SO2is selected as the observation index.Then the SO2removal efficiencies of NaOHand pure water phase have been analyzed.The product concentrations under different experimentalconditions are also discussed,such as discharge time and gas flow rate.The results show that NaOHsolution instead of pure water phase enhances discharge strength under the same conditions,and intenseionization in the discharge produces a large number of OH radicals.At the same time,compared withpure water,the sulphur removal efficiency of NaOH solution increases by5%～7%,while the productof SO3content reduces by about50%.

关 键 词：滑动弧放电 二氧化硫 氢氧化钠 烟气脱硫 

分 类 号：TM213[一般工业技术—材料科学与工程]