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DEVELOPMENT OF GAS PURIFICATION TECHNOLOGY USING CORONA DISCHARGE REACTOR WITH FALLING LIQUID FILM

落液膜电晕放电反应器气体净化技术的开发

基本信息

批准号：
05555211
负责人：
TAMON Hajime
金额：
$ 2.75万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555211/
关键词：
Gas purification Corona discharge reactor Falling liquid film Electron attachment reaction Negative ion Removal of iodine Removal of methyl iodine 電子付着コロナ放電気体精製技術ハロカーボン

项目摘要

1.Construction of Corona Discharge Reactor with Falling Liquid FilmLow-energy electrons generated in a corona discharge reactor are captured by electronegative impurities, and negative ions are produced. The ions drift to the anode in the electric field. A reactor was constructed to remove the negative ions at the anode. In this reactor, the anode is wetted with the liquid absorbent falling along it, and the negative ions are absorbed into the liquid film. Electronegative impurities become negative ions by electron attachment, and the ions drift to the liquid film. The corona discharge induces the ion wind and makes the boundary layr on the falling liquid film thin. The negative ion absorption into the falling film is promoted by the corona discharge.2.Removal of IodineIodine was removed from nitrogen using the corona discharge reactor with a falling liquid film of distillled water. The experimental results suggested that the removal efficiency of iodine was increased by the discharge. The chemical species of iodine in water were experimentally identified. The results suggested that I- produced by electron attachment was absorbed into the falling liquid.Removal of Methyl IodineMethyl iodine was removed from nitrogen using the present reactor. It was found that the reactor was greatly effective to remove methyl iodine. Since I- was produced form methyl iodine by electron attachment, the removal efficiency was increased by the discharge. The authors have proposed the gas purification method using the deposition-type reactor, in which negative ions deposit at the surface of solid anode. It was found that the resent reactor was more effective to remove methyl iodine than the deposition-type reactor. However, the stripping of methyl iodine from the falling film limited the removal efficiency. Hence, the complete conversion of methyl iodine to I will be needed in the future.

1.电晕放电反应器中产生的低能电子被电负性杂质捕获，产生负离子。离子在电场中漂向阳极。建立了反应器来去除阳极上的负离子。在这个反应器中，阳极被液体吸收剂浸湿，负离子被吸收到液膜中。电负性杂质通过电子附着变成负离子，离子漂移到液膜上。电晕放电诱导离子风，使落液膜上的边界层变薄。电晕放电促进了负离子对下降膜的吸收。采用电晕放电反应器，利用蒸馏水降液膜，从氮气中脱除碘。实验结果表明，通过放电提高了碘的去除率。通过实验确定了水中碘的化学种类。结果表明，电子吸附产生的I-被降液吸收。甲基碘的脱除利用本反应器从氮中脱除了甲基碘。结果表明，该反应器对甲基碘的去除效果显著。由于I-是通过电子吸附从甲基碘中生成的，因此通过放电可以提高去除效率。提出了负离子沉积在固体阳极表面的沉积式反应器净化气体的方法。结果表明，反应器对甲基碘的去除率高于沉淀式反应器。然而，降膜中甲基碘的剥离限制了脱除效率。因此，未来需要将甲基碘完全转化为I。