Pilot-Scale Combined Reduction of Accumulated Particulate Matter and NOx Using Nonthermal Plasma for Marine Diesel Engine
Pilot-Scale Combined Reduction of Accumulated Particulate Matter and NOx Using Nonthermal Plasma for Marine Diesel Engine
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DOI：
10.1109/tia.2019.2958276
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发表时间：
2020-03
影响因子：
4.4
通讯作者：
T. Kuwahara;Keiichiro Yoshida;T. Kuroki;K. Hanamoto;Kazutoshi Sato;M. Okubo
中科院分区：
文献类型：
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作者：
T. Kuwahara;Keiichiro Yoshida;T. Kuroki;K. Hanamoto;Kazutoshi Sato;M. Okubo
研究了一种采用低温等离子体(NTP)和吸附相结合的船用柴油机高效脱氮后处理系统。该系统还可以处理使用柴油颗粒过滤器(DPF)的颗粒物(PM)，并通过NTP诱导的臭氧对其进行再生。研究了累积颗粒物和NOx的联合减排效果。感兴趣的船用柴油发动机在100%的发动机负载下提供1兆瓦的输出功率。NOx还原是由NTP与NOx吸附剂相结合的反复吸附和解吸流过程组成。为了达到实际应用的目的，进行了更多循环次数的实验。吸附剂的用量为105公斤，比作者以前的研究结果要大。结果表明，NTP的NOx还原效率高于前人的研究结果，并且由于较高的NOx脱附率，在较高的吸附剂用量时，NTP的NOx还原效率更高。此外，还同时实现了等离子体诱导臭氧注入的DPF再生。该后处理系统的能效高达114g(NO2)/kWh。目前的后处理可以产生PM和NOx的协同效应。
An effective NOx-reduction aftertreatment system for a marine diesel engine that employs combined nonthermal plasma (NTP) and adsorption is investigated. The system can also treat particulate matter (PM) that employs a diesel particulate filter (DPF) and its regeneration by NTP-induced ozone. The effect of the combined reduction of accumulated PM and NOx is studied. The marine diesel engine of interest provides an output power of 1 MW at 100% of the engine load. The NOx reduction is composed of repeated adsorption and desorption flow processes using NTP combined with NOx adsorbents. With a view toward practical use, experiments on a higher number of cycles are carried out. The amount of adsorbents is 105 kg, which is greater than that in the authors’ previous study. As a result, NOx reduction efficiency by NTP is higher than in the previous study and is greater at higher amounts of adsorbents owing to higher NOx desorption. Furthermore, DPF regeneration with plasma-induced O3 injection is achieved simultaneously. This aftertreatment system demonstrates an excellent energy efficiency of 114 g(NO2)/kWh. The present aftertreatment can generate a synergistic effect of PM and NOx reduction.