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Transport and Focus of Pulse Intense Electron Beam and its Application for Decomposition of Environmental Pollution Gas

脉冲强电子束的输运和聚焦及其在环境污染气体分解中的应用

基本信息

批准号：
09680467
负责人：
NAKAGAWA Yoshiro
金额：
$ 1.79万
依托单位：
Osaka City University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09680467/
关键词：
pulse intense electron beam transport environmental pollution gas Gas decomposition NOィイD2xィエD2 Electron beam NO_x NOx

项目摘要

Fundamental research for developing a new dry process of flue gas treatment device by the pulse intense electron beam was performed. Basic data on the NOィイD2xィエD2 removal from pure nitrogen or oxygen mixed nitrogen gas (model flue gas) were experimentally obtained by using the NィイD2xィエD2-OィイD22ィエD2 measuring device (NOA-7000) that was bought by the Grant-in-Aid in 1997. After generation of N radicals in pure nitrogen by the injection of pulse high current electron beam (【less than or equal】160keV, 140A, 2A/cmィイD12ィエD1, 700ns, 12.6 J/shot), NO was reduced to NィイD22ィエD2 and OィイD22ィエD2. The energy efficiency of NOィイD2xィエD2 removal was equal to that for the continuous electron beam or 2 〜 3 times larger value (500 〜 900 nmol/J) than that at optimized conditions of the gas cell volume, initial NO concentration and electron beam power. In the model flue gas, OH radicals removed NOィイD2xィエD2 at the efficiency of 400 nmol/J when the water was added to the mixture gas. NOィイD2xィエD2 was also removed at higher efficiency when the inner wall of the gas cell was covered with the wet cloth. By addition of NHィイD23ィエD2 only, NOィイD2xィエD2 was also removed. New high current density electron beam reactor was considered in which the electron beam was compressed and transported by self magnetic field generated by its large current. As a preliminary experiment of such a scheme, the pulse electron beam was compressed and transported by strong external magnetic field and injected into NO(=200 ppm)/NィイD22ィエD2 gas. NOィイD2xィエD2 was removed as high as 50% by 3 shots. These results suggest that the pulse intense electron beam has a possibility to be a new gas treatment device.

开展了新型脉冲强电子束干法烟气处理装置的基础研究。使用1997年援助基金购买的NィイD2xィエD2-OィイD22ィエD2测量装置(NOA-7000)实验获得纯氮或氧混合氮气(模型烟气)中NOィイD2xィエD2去除的基本数据。脉冲高电流电子束（【小于等于】160keV，140A，2A/cmィイD12ィエD1，700ns，12.6 J/shot），NO减少为NィイD22ィエD2和OィイD22ィエD2。 NOィイD2xエD2去除的能量效率与连续电子束的能量效率相当，或者是气室体积、初始NO浓度和电子束功率优化条件下的2〜3倍（500〜900nmol/J）。在模型烟气中，当混合气体中添加水时，OH自由基以400 nmol/J的效率去除NOiiD2xiiD2。当气室的内壁被湿布覆盖时，NOィイD2xエD2也被更高效地除去。仅通过添加 NHィイD23ィエD2，NOィイD2xィエD2 也被删除。考虑了新型高电流密度电子束反应堆，其中电子束通过其大电流产生的自磁场进行压缩和传输。作为该方案的初步实验，脉冲电子束被强外磁场压缩传输，注入NO(=200 ppm)/NィイD22ィエD2气体中。 NOィイD2xィエD2被3枪移除高达50%。这些结果表明脉冲强电子束有可能成为一种新型的气体处理装置。