Continuous Regeneration of Ceramics Particulate Filter in Stationary Diesel Engine Using Nonthermal Plasma-Induced Ozone Injection
Continuous Regeneration of Ceramics Particulate Filter in Stationary Diesel Engine Using Nonthermal Plasma-Induced Ozone Injection
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DOI：
10.1109/08ias.2008.122
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发表时间：
2008-10
期刊：
影响因子：
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通讯作者：
M. Okubo;T. Kuroki;S. Kawasaki;Keiichiro Yoshida;Toshiaki Yamamoto
中科院分区：
文献类型：
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作者：
M. Okubo;T. Kuroki;S. Kawasaki;Keiichiro Yoshida;Toshiaki Yamamoto
柴油机排放法规日趋严格，在不久的将来仅靠燃烧改善技术已难以满足要求。需要更有效的后处理技术，特别是对颗粒物质（PM），如碳烟。虽然陶瓷柴油微粒过滤器（DPF）的使用是目前去除PM的领先技术，但在低温下，特别是在冷启动时，煤烟的去除或再生存在问题。本文采用低温常压非热等离子体诱导臭氧注入技术，对固定式柴油机发电机柴油机微粒过滤器进行了非热等离子体再生的中试试验。该方法利用等离子体反应器产生的NO2和臭氧来燃烧沉积在DPF上的碳烟。在小型柴油机和表面放电式等离子臭氧发生器上进行了再生实验。在发动机的各种运行条件下，确定了再生所需的注入臭氧量，确定了只有在等离子体开启，DPF再生大约在250℃时，压差才会减小。所需的等离子体能量仅为发动机产生功率的0.25%。
The regulation for the diesel engine emission becomes stringent every year, and it is difficult to meet the requirement only by the combustion improvement techniques in the near future. More effective post-processing technology is desired especially on particulate matter (PM), such as carbon soots. Although the use of ceramic diesel particulate filter (DPF) is now a leading technology for PM removal, the problem exists on the soot removal or regeneration at low temperature, especially at the cold start. In the present study, a pilot scale experiments on nonthermal plasma regeneration of diesel particulate filter in stationary diesel engine generator is carried out using the low temperature atmospheric pressure nonthermal plasma induced ozone injection. In the method, the NO2 and ozone induced by the plasma reactor is used to burn carbon soots deposited on DPF. Regeneration experiment is carried out with a small diesel engine and a surface discharge type plasma ozonizer. The amount of injected ozone required for the regeneration is determined under various operation conditions of the engine, It is confirmed that the pressure difference decreased only when the plasma is turned on and the regeneration of DPF is realized approximately at 250degC. The required plasma energy is only 0.25% of the generated power of the engine.