汤红卫,韩云峰,仲崇山.介质阻挡放电的大气固氮应用[J].农业机械学报,2016,47(8):60-64,80.
Tang Hongwei,Han Yunfeng,Zhong Chongshan.Ambient Nitrogen Fixation Application of Dielectric Barrier Discharge[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(8):60-64,80.
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介质阻挡放电的大气固氮应用   [下载全文]
Ambient Nitrogen Fixation Application of Dielectric Barrier Discharge   [Download Pdf][in English]
投稿时间:2016-02-18  
DOI:10.6041/j.issn.1000-1298.2016.08.009
中文关键词:  大气固氮  介质阻挡  低温等离子体
基金项目:国家大学生创新性实验计划项目
作者单位
汤红卫 中国农业大学 
韩云峰 中国农业大学 
仲崇山 中国农业大学 
中文摘要:在常温常压下,利用空气介质阻挡放电形成低温等离子体,使游离态氮、氧化合形成氮氧化物,再通过吸收装置实现大气固氮,辅助农业氮肥生产。在前期研究放电时间、频率、电压峰峰值对固氮效率影响的基础上,以介质材料、介质厚度、放电间隙、电压峰峰值为试验因素展开进一步研究,并采用氮氧化物气体质量浓度为检测指标,以排除吸收系统误差。正交试验结果表明,介质材料对氮氧化物气体质量浓度影响最大;石英材料、介质厚度5mm、放电间隙2mm、电压峰峰值30kV为试验最优水平。在试验最优水平下,放电持续5min,氮氧化物气体质量浓度可达1004.20mg/m,产出/能耗比为2.21g/(kW·h)。
Tang Hongwei  Han Yunfeng  Zhong Chongshan
China Agricultural University,China Agricultural University and China Agricultural University
Key Words:ambient nitrogen fixation  dielectric barrier  non-thermal plasma
Abstract:At room temperature, dielectric barrier discharge in air can produce non-thermal plasma with atmospheric pressure. Among the existed particles, there must be nitrogen and oxygen free radicals which combined as nitrogen oxides. The technology of non-thermal plasma nitrogen fixation was studied. Nitrogen oxides can be absorbed by water, and the nitrate solution can assist production of nitrogen fertilizer. In previous studies, The effects of time, voltage and frequency on nitrogen fixation were presented, and the subsequent discussion would be shown in this study. To eliminate error of absorption system, nitrogen oxide gas concentration was chosen as experiment detection index. Experimental factors included dielectric materials, dielectric thickness, discharge gap and peak to peak voltage. A four factors and three levels orthogonal experiment design method was used. Through range analysis of the experimental data, it showed that dielectric materials had the biggest effect on nitrogen oxide gas concentration. Through analyzing the average value of each factor, it showed that the optimal level for this experiment was quartz material, 5mm medium thickness, 2mm discharge gap and 30kV peak to peak voltage. Under the optimal level and discharge for 5min, gas concentration of nitrogen oxide was detected as 1004.20mg/m and the efficiency of nitrogen fixation was 2.21g/(kW·h).

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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