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DEVELOPMENT OF ATMOSPHERE ENVIRONMENTAL PROTECTION TECHNOLOGY BY USING ATMOSPHERIC PRESSURE NON-THERMAL PLASMA PROCESS

常压非热等离子工艺大气环保技术的开发

基本信息

批准号：
12355013
负责人：
ODA Tetsuji
金额：
$ 27.01万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2003
项目状态：
已结题

项目摘要

This project was carried out from April 2000, to March 2004 supported by the "Grand-in-Aid for Scientific Research (A) from JSPS. Main target of this project is development of the atmospheric pressure non thermal plasma technology as the removing the gaseous contaminants in the air or in the combustion flue gas. For flue gas cleaning, De-NOx process was investigated and for clean air, removal of 100 -1,000 ppm VOCs (volatile organic compounds) in air is another aim of this project. Geometrical effect of the reactor, drive power supply were optimized. A bolt type barrier discharge reactor was the best among the tested reactors. To enhance the removal energy efficiency, some catalysts were examined, such as titanium oxide, vanadium oxide, tungsten oxide, Manganese oxide can reduce ozone and improve the decomposition efficiency of dilute TCE (trichloroethylene). When the TCE contaminated air is mixed with the plasma processed clean air, TCE can be decomposed, which was named as Indirect Process. Normal process, the TCE contaminated air passes through the plasma reactor, was, then, named as the Direct Process. At best case, TCE removal efficiency is more than 95 % where specific discharge energy was 30 J/L. As the diagnosis process of that plasma, LIF technologies for OH radical, NO, NO^*, oxygen molecule, atomic oxygen radicals were established in spatial and time divisions. Other optical methods of Laser-Schlieren Method is developed for density measurement and the ozone distribution could be observed by using laser-Beam Absorption method of UV light. Those diagnosis technologies built up during this project.

该项目于2000年4月至2004年3月在日本学术振兴计划（JSPS）的“科学研究补助金（A）”的支持下进行。本项目的主要目标是开发大气压低温等离子体技术，用于去除空气或燃烧烟气中的气态污染物。对于烟气净化，研究了脱氮工艺，对于清洁空气，去除空气中100 - 1，000 ppm的VOC（挥发性有机化合物）是本项目的另一个目标。对反应器的几何效应、驱动电源进行了优化。在所测试的反应器中，螺栓型阻挡放电反应器是最好的。为了提高去除能量效率，考察了氧化钛、氧化钒、氧化钨、氧化锰等催化剂对臭氧的去除效果，并对催化剂的性能进行了研究。当TCE污染的空气与等离子体处理过的洁净空气混合时，TCE可以被分解，这被称为间接过程。常规工艺，即TCE污染空气通过等离子体反应器，被称为直接工艺。在最佳情况下，当放电比能量为30 J/L时，三氯乙烯的去除率大于95%.作为该等离子体的诊断过程，建立了OH自由基、NO、NO^*、氧分子、原子氧自由基等离子体的LIF技术。发展了激光纹影法的其他光学方法用于密度测量，并利用紫外光的激光束吸收法观测臭氧的分布。这些诊断技术是在这个项目中建立起来的。