Development of Low-temperature Aftertreatment of Diesel Exhaust Participates Using plasma Actions

利用等离子体作用参与柴油机尾气低温后处理的开发

• 批准号: 13558056
• 负责人: MURAOKA Katsunori
• 金额: $ 8.7万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13558056/
• 关键词: diesel engine; exhaust aftertreatment; particulate; NOX; barrier discharge; non thermal plasma; filter trapping; low temperature combustion; フィルター補捉

Diesel engines are widely used in transportation and other purposes, due to their low fuel cost and high energy efficiency. However, emission of particulates from exhausts, which mainly consist of various forms of carbon, has received particular attention because of health concern. Thus, there have been many attempts to aftertreatment them, but considerable difficulties exist to satisfy both requirements of sufficient aftertreatment and low initial/operating costs. This work has been undertaken to seek a possibility of exploiting the combination of barrier discharges with densifications using catalysts. Also, aftertreatments of SOF (Soluble Organic Fraction) are to be pursued. The main emphasis is to perform these functions at low pressure losses by utilizing a honeycomb structure, which has a large surface to volume ratio.The main results are summarized below.(1) The scheme of trapping of diesel particulates by a filter and their subsequent low temperature burning using barrier discharges has been demonstrated.(2) Absorption of NOX at low temperature and its release at above 300℃ using PZA (Pt-ZrO_2-Al_2O_3) were confirmed. The formation of honeycomb structure using the PZA was also demonstrated.(3) A barrier discharge was successfully formed between copper electrodes separated by mica sheet with PZA embedded honeycomb-shaped sheets inserted in the spaces. Thus, it has become possible to absorb and release NOX using discharge cycles.(4) Particulates were successfully collected toward bare electrodes between honeycomb-structured barrier discharge elements using the principle of electrostatic precipitation.Based on these results, the elements for the aftertreatment of diesel exhaust particulates have been demonstrated, and we intend to carry out the system test of the whole elements.

柴油发动机由于其燃料成本低和能源效率高，广泛用于运输和其他用途。但是，由于健康关注，排气的排放（主要由各种形式的碳组成）受到了特别关注。这是有很多尝试来治疗后的尝试，但是存在很大的困难来满足足够的后处理和低初始/运营成本的要求。这项工作已努力寻求利用使用催化剂的屏障排放与致密性的结合。同样，还应追求SOF（可溶性有机分数）的后处理。主要的重点是通过利用蜂窝结构在低压损失下执行这些功能，该结构具有较大的表面与体积比。主要结果总结了下面的主要结果。（1）通过过滤器捕获柴油组件的方案及其使用屏障的后续低温燃烧的柴油成分的方案已证明了其在低温下的NON释放。 （PT-ZRO_2-AL_2O_3）已确认。还证明了使用PZA的蜂窝结构形成。（3）在用云母板分离的铜电极之间成功形成了屏障排放，并用嵌入在空间中的PZA嵌入式蜂窝状的床单。这是有可能使用放电周期吸收和释放NOX的。（4）通过使用静电沉淀原理，成功地收集了颗粒物，以在蜂窝结构的屏障排放元件之间裸露电极。基于这些结果，基于这些结果，用于柴油后处理后的元素已被证明，我们已经表明了该元素测试，并进行了整个元素测试。

项目成果

浦江 英孝, 山形幸彦, 村岡 克紀, 山田 健一郎, 山内 恒, 岡野 浩志: "希薄揮発性有機物のゼオライト吸着による濃縮とバリア放電の組合せによる除去"電気学会論文誌. 122-A, 11. 965-976 (2002)

Hidetaka Urae、Yukihiko Yamagata、Katsunori Muraoka、Kenichiro Yamada、Hisashi Yamauchi、Hiroshi Okano：“通过沸石吸附浓缩和势垒放电相结合去除稀释的挥发性有机物”日本电气工程师学会学报 122-A。 ，11。965-976（2002）

H. Urae, Y. Yamagata, K. Muraoka, K. Yamada, T. Yamauchi, H. Okano: "Removal of Dilute Volatile Materials using a Combination of Adsorption of Zeolites and Barrier Discharges"IEEJ Transactions on Fundamentals and Materials. 122-A,11. 965-976 (2002)

H. Urae、Y. Yamagata、K. Muraoka、K. Yamada、T. Yamauchi、H. Okano：“结合沸石吸附和势垒放电去除稀释挥发性材料”IEEJ 基础和材料交易。

Y. Yamagata, T. Matsui, T. Ebihara, K. Muraoka: "Treatments of Environmentally Hazardous Materials by Combinations of Barrier Discharges with Densification by Adsorption/Trapping"Proceedings of the 2nd Japan - Korea Joint Symposium on Energy and Environme

Y. Yamagata、T. Matsui、T. Ebihara、K. Muraoka：“通过势垒放电与吸附/捕集致密化相结合来处理对环境有害的材料”第二届日韩能源与环境联合研讨会论文集

K. Muraoka , Y.Yamagata: "Applications of barrier discharges for environmental problems"Proceedings of the 1st Korea - Japan Joint Symposium on Energy and Environment. 1. 3-4 (2001)

K. Muraoka，Y.Yamagata：“势垒放电在环境问题中的应用”第一届韩日能源与环境联合研讨会论文集。

K.Muraoka, Y.Yamagata: "Applications of barrier discharges for environmental problems"Proceedings of the 1st Korea -Japan Joint Symposium on Energy and Environment. 1. 3-4 (2001)

K.Muraoka，Y.Yamagata：“势垒放电在环境问题中的应用”第一届韩日能源与环境联合研讨会论文集。