近大气压DBD氧等离子体化学反应效能  

Efficiency of ROS Generation Generated by Dielectric Barrier Discharge Near Atmosphere

作　　者：张芝涛[1,2] 高颖 李日红[2] 俞哲[1] 张志鹏[1] ZHANG Zhitao1,2, GAO Ying1, LI Rihong2, YU Zhel, ZHANG Zhipeng1(1 .Department of Physics, Dalian Maritime University, Dalian 116026, China; 2. Institute of Marine Engineering, Dalian Maritime University, Dalian 116026, Chin)

机构地区：[1]大连海事大学物理系,大连116026 [2]大连海事大学轮机工程学院,大连116026

出　　处：《高电压技术》2018年第3期849-855,共7页High Voltage Engineering

基　　金：国家科技支撑计划(2013BAC06B02);国家自然科学基金(61427804;51309039)~~

摘　　要：大气压介质阻挡放电（dielectric barrier discharge,DBD）氧等离子体发生模块是高级氧化水处理技术中的重要组件,其等离子体化学反应效能直接影响实际应用中的处理效率。通过测量大气压DBD氧等离子体发生模块在不同工作气压下的放电参数及活性氧粒子产生浓度,探究了工作气压对氧等离子体化学反应效能的影响。结果显示,工作气压的降低使得氧等离子体反应模块的等效电容与放电气隙的折合场强度增强,导致在施加不同功率时,模块表现出不同的放电特性与等离子体化学反应效能。当电源功率低于150 W时,活性氧产生效能随工作气压降低而增大,当电源功率在175~250 W范围内时,活性氧产生效能随工作气压的降低先增大后减小,当电源功率高于275 W时,活性氧产生效能随工作气压降低而减小。工作气压降低时活性氧最高浓度减小,当工作气压为60、70、80、90和100 k Pa时,活性氧最高质量浓度分别为127.3、143.1、149.7、152.1和157.7 g/m^3。为使活性氧产生效能最大,需根据实际状况不同,采用不同的电源功率,使活性氧发生模块处于最佳工作状态。Reactive oxygen species（ROS） generation module based on DBD is an important part in advanced oxidation technology. ROS generation efficiency affects the production efficiency in practical application. We researched the effect of working pressure on generation module, and analyzed discharge parameters and ROS concentration. The results show that the module equivalent capacitance will increase and the electric field intensity will reduce with the depression of pressure. Therefore, there are different discharge characteristics for different input power in the module, during which the ROS generation efficiency is different. If the input power is below 150 W, ROS generation efficiency will increase with the reduction of pressure. If the input power ranges from 175 W to 250 W, the efficiency will increase to maximum with the reduction of pressure, and then it decreases. If the input power is higher than 275 W, ROS concentration will reduce with the reduction of the pressure. If the pressure reduces, the maximum of ROS concentration will reduce too. When the pressure are 60, 70, 80, 90 and 100 k Pa, the corresponding ROS concentration maximums are 127.3, 143.1, 149.7, 152.1, and 157.7 g/m3, respectively. To ensure that the ROS generation module keeps the best work condition, a suitable power needs to be used according to the actual situations.

关 键 词：近大气压 DBD 氧等离子体 化学反应效能 高级氧化水处理 

分 类 号：O53[理学—等离子体物理]