低温等离子体降解偏二甲肼废水的实验研究  

Experimental Study on Degradation of Unsymmetrical Dimethylhydrazine Wastewater by Low Temperature Plasma

作　　者：黄龙呈 叶继飞 王殿恺 郑永赞 HUANG Long-cheng;YE Ji-fei;WANG Dian-kai;ZHENG Yong-zan(State Key Laboratory of Laser Propulsion&Application,Space Engineering University,Beijing 101416,China)

机构地区：[1]航天工程大学激光推进及其应用国家重点实验室,北京101416

出　　处：《含能材料》2022年第10期1013-1021,共9页Chinese Journal of Energetic Materials

摘　　要：从低温等离子体对偏二甲肼(Unsymmetrical Dimethylhydrazine,UDMH)降解的实际应用出发,以微秒脉冲电源和6根同轴反应管为主要构成,设计研制了基于气液两相介质阻挡放电的UDMH废水处理装置,探究了不同频率、不同脉宽的电源参数对实验装置放电功率和功率因数的影响,以功率因数为主要目标优选了微秒脉冲电源参数;并对两种典型浓度的UDMH废水进行了降解实验,测定了UDMH的去除率和降解能耗。实验装置的功率因数随频率变大而提升,且在脉宽2~10μs间有极大值,电源参数优选为控制电压200 V、频率1000 Hz、脉宽6μs。UDMH废水降解实验中,对于初始浓度43.5,264.5 mg∙L^(-1)的UDMH废水,UDMH去除率分别为99.9%、93.8%,降解能耗为0.51,0.18 kWh∙g^(-1)。结果表明,以石英玻璃加水膜为阻挡介质、空气为工作气体的同轴反应管能够通过DBD产生LTP活性粒子,以较低的能耗为代价有效去除UDMH,实验装置可较好应用于工程。Due to the actual application requirement for Unsymmetrical Dimethylhydrazine(UDMH)degradation,low temperature plasma(LTP)was employed as an efficient proposal.An application device based on dielectric barrier discharge(DBD)was designed and developed with microsecond pulse power supply and six coaxial reaction tubes as the key components to generate LTP for UDMH degradation.The effects on the discharge power and power factor of power parameters were explored under different frequencies and pulse widths.Under optimal conditions,the removal efficiency of UDMH and the energy consumption were analyzed.The power factor of the experimental device increases with the increase of frequency,and has a maximum value between 2μs and 10μs,which is near 6μs.The optimal parameters for power supply is the input voltage of 200 V,frequency of 1000 Hz and pulse width of 6 ms.The removal efficiency of 43.5 and 264.5 mg·L^(-1)UDMH reached 99.9%and 93.8%,and the energy consumption was 0.51 and 0.18 kWh·g^(-1).Therefore,the coaxial reaction tube with quartz glass and water film as barrier medium and air as the working gas can generate large‑area LTP through DBD,which can degrade UDMH efficiently with low energy consumption,indicating that LTP technology has good practical value for UDMH wastewater treatment.

关 键 词：低温等离子体(LTP) 偏二甲肼(UDMH) 微秒脉冲 介质阻挡放电(DBD) 去除率 降解能耗 

分 类 号：X592[环境科学与工程—环境工程]