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在柴油发动机的废气中,通过表面排放诱导的等离子体去除颗粒物,NO_x和碳化合物的性能评估

Kohei Kawakami¹, Ken Watatani², Haruhiko Yamasaki³

¹Department of Mechanical Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Japan.

Journal of hazardous materials

|October 20, 2023

概括

一种新的低温等离子体后处理方法有效地从柴油废气中去除氧化 (NOx),颗粒物 (PM) 和碳化合物 (HC). 这种创新方法实现了高的清除效率,特别是在75%的发动机负载下.

科学领域:

环境科学环境科学
化学工程是化学工程的重要组成部分.
机械工程机械工程

背景情况:

柴油发动机提供燃油效率,但会排放有害污染物,如氧化 (NOx),颗粒物 (PM) 和碳化合物 (HC).
有效的后处理系统对于减轻柴油发动机排放量至关重要,以满足环境法规.

研究的目的:

开发和评估一种基于低温等离子体的新型后处理系统,用于同时从柴油发动机排气中去除NOx,PM和HC.
评估等离子体后处理在不同发动机负载和输入功率条件下的性能.

主要方法:

一个低温等离子反应器被设计用于柴油废气后处理.
发动机废气污染物度 (NOx,PM,HC) 用专用分析仪和扫描移动性粒子测量仪进行测量.
在不同的发动机负载 (0-75%) 和输入功率水平 (100-400W) 下评估了等离子反应堆的性能.

主要成果:

等离子体后处理系统对所有目标污染物显示出显著的去除效率.
在75%的发动机负载和100瓦的输入功率下,该系统实现了70%的NOx去除,98%的PM去除和67%的HC去除.
污染物去除率取决于发动机负载和等离子体输入功率.

结论:

低温等离子技术为柴油发动机废气中NOx,PM和HC的同时后处理提供了一个可行的解决方案.
开发的系统有望减少柴油发动机对环境的影响.
进一步优化等离子体参数可以在更广泛的操作条件下提高清除效率.

关键词:

这是一个柴油发动机.碳化合物是一种碳化合物.没有 (x)总理总理总理总理表面放电等离子体的情况.

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