低温等离子体协同催化技术处理VOCs研究综述  

Research review of co-catalytic treatment of VOCs by low temperature plasma

作　　者：韩丰磊 季纯洁 张子琦 朱一凡 李丹丹 张婷婷 周硕 郭雯雯 HAN Fenglei;JI Chunjie;ZHANG Ziqi;ZHU Yifan;LI Dandan;ZHANG Tingting;ZHOU Shuo;GUO Wenwen(School of Chemical Engineering,China University of Petroleum,Qingdao 266580,China;Qingdao OASIS Environmental&Safety Technology Co.,Ltd.,Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)化学工程学院,山东青岛266580 [2]青岛欧赛斯环境与安全技术有限责任公司,山东青岛266580

出　　处：《洁净煤技术》2022年第2期23-31,共9页Clean Coal Technology

基　　金：国家自然科学基金资助项目(21505156);山东省自然科学基金面上资助项目(ZR2020MA104);中央高校基本科研业务费专项资金资助项目(19CX02039A);山东省重点研发计划重大科技创新工程资助项目(2019JZZY020502)。

摘　　要：针对浓度较低、流量较大的挥发性有机化合物(VOCs)的治理,传统处理技术在技术和经济上存在一定局限性,达不到预期结果。而低温等离子体(Non-Thermal Plasma,NTP)技术在处理VOCs方面具有反应器处理费用少、反应器结构简单、适用范围广、反应条件温和等优点,近年来受到广泛关注。单独等离子体降解VOCs存在O_(3)、NO_(2)、有机副产物众多等问题,易对环境造成二次污染。低温等离子体协同催化降解VOCs体系对于提高VOCs降解率、降低反应系统能耗、减少有害副产物产生均有显著作用。详细介绍了NTP协同催化降解VOCs技术,总结了NTP协同催化降解VOCs的影响因素、不同催化体系和放电类型对降解率的影响,对等离子体技术降解VOCs机理及低温等离子体协同催化降解VOCs的机理进行了推断,并阐述了等离子体技术与催化剂催化在降解VOCs方面产生的协同作用,最后对该技术进行了展望。目前单一处理技术很难满足VOCs的处理要求,普遍采用多种技术耦合的方式进行处理。近年来学者将低温等离子体技术与催化技术联合,对提高VOCs降解率、降低反应系统能耗、减少有害副产物产生均有显著作用,该技术具有可行性和研究价值。目前研究集中于催化剂与低温等离子体的复合方式、催化剂种类、工艺参数等因素对污染物的降解效果,研究不深入。等离子体技术仍存在矿化率较低、副产物多等缺点,如等离子体内反应后会产生NO_(x)、臭氧等副产物,形成二次污染。由于气体放电产生的低温等离子体中活性自由基种类繁多,降解VOCs的化学反应过程复杂,关于低温等离子体与催化协同的作用机理还不明确,尤其是等离子体降解VOCs的分子动力学基础理论还有待进一步研究。因此,应立足本质安全,着眼于工业应用,提出一套适于低温等离子体协同催化治理VOCs工艺特性的安全评价理论、�For the treatment of volatile organic compounds(VOCs) with low concentration and large flow, the traditional treatment technology has some limitations in technology and economy, and can not reach the expected results. Non-thermal plasma(NTP) technology has many advantages in the treatment of VOCs, such as low reactor treatment cost, simple reactor structure, simple operation, wide range of application, mild reaction conditions, which has received widespread attention in recent years. The experimental results show that the degradation of VOCs by single plasma has many problems such as O_(3),NO_(2)and organic by-products, which is easy to cause secondary pollution to the environment. The results show that the synergistic catalytic degradation of VOCs by low temperature plasma has significant effect on improving VOCs degradation rate, reducing energy consumption of reaction system and reducing harmful by-products. The NTP collaborative catalytic degradation of VOCs technology in detail was introduced, the influencing factors of NTP collaborative catalytic degradation of VOCs, the influence of different catalytic systems and discharge types on the degradation rate were summarized, and the mechanism of plasma technology and low temperature plasma co-catalytic degradation of VOCs was deduced. The synergistic effect of plasma technology and catalyst catalysis on VOCs degradation was described. Finally, the future development of this technology was prospected. The investigation shows that the current single processing technology is difficult to meet the VOCs processing requirements, a variety of technology coupling methods are widely used at home and abroad. In recent years, the combination of low-temperature plasma technology with catalytic technology plays a significant role in improving the degradation rate of VOCs, reducing the energy consumption of the reaction system and the generation of harmful by-products. This technology has feasibility and research value. At present, the research focuses on the degradation eff

关 键 词：低温等离子体 挥发性有机化合物(VOCs) 协同作用 分子动力学 安全评价 

分 类 号：X131.2[环境科学与工程—环境科学]