Simulation study of NO2-Assisted regeneration performance of variable cell geometry catalyzed diesel particulate filter

• Published in: Process safety and environmental protection Vol. 154; pp. 211 - 222
• Main Authors: Li, Zhijun, Li, Shilong, Li, Zhiyang, Wang, Yan, Li, Zhenguo, Li, Mengliang, Jiao, Penghao, Cai, Dong
• Format: Journal Article
• Language: English
• Published: Rugby Elsevier B.V 01.10.2021; Elsevier Science Ltd
• Subjects: Asymmetric square; Asymmetry; Catalytic diesel particulate filter; Diesel; Diesel engines; Fluid filters; Hexagonal; Internal combustion engines; Nitrogen dioxide; NO2-assisted regeneration; Octagonal; Particulate emissions; Pressure drop; Regeneration; Soot; Soot loading; NO2-assisted regeneration; Octagonal; Asymmetric square; Hexagonal; Catalytic diesel particulate filter; Soot loading
• ISSN: 0957-5820; 1744-3598
• DOI: 10.1016/j.psep.2021.07.028

With the increasingly strict emission regulations of countries around the world, reducing the particulate emissions of diesel engines is the focus of research. In this paper, the optimal asymmetry ratio was researched by comparing pressure drop under different operation conditions through the validated model. When soot loading is 0 g/L, the optimal asymmetric ratio is 1.1. When soot loading is 4 g/L, the optimal asymmetric ratio is 1.2. And performances of passive regeneration of catalyzed diesel particulate filters with different channel shapes were also studied. Based on the remaining soot loading, regeneration efficiency and pressure drop, the hexagonal channel has obvious advantages in NO2 assisted passive regeneration, followed by the asymmetrical square channel, and the octagonal channel is the worst.