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| Experimental Study on Regeneration Performance of Catalytic Diesel Particulate Filter |
| DOI：10.13949/j.cnki.nrjgc.2020.02.012 |
| Key Words:catalytic diesel particulate filter particle carbon loading regeneration efficiency regeneration efficiency ratio |
| Author Name | Affiliation | | WANG Pan,LUO Dong,LI Zhenguo,YI Jing,ZHU Zengzan | 1.School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
2.National Engineering Laboratory for Mobile Source Emission Control Technology, Tianjin 300300, China
3.Kailong Lanfeng New Material Technology Co., Ltd., Zhenjiang 212000, China |
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| Abstract:In order to explore the regeneration performance of catalytic diesel particulate filter(CDPF), an in-house-made CDPF carbon particle loading device was developed. The effects of carbon loading, regeneration temperature and gas flow rate on the regeneration performance of CDPF were studied through a simulated gas test platform, and the regeneration efficiency, regeneration efficiency ratio, maximum temperature and maximum temperature gradient were evaluated. The results show that there are two main stages in the CDPF regeneration. The first stage mainly takes place between 250 ℃ and 400 ℃, which is a long regeneration at low temperatures; the second stage mainly occurrs between 500 ℃and 600 ℃, which is a short regeneration at high temperatures. When the regeneration temperature is 350 ℃ and the gas flow rate is 200 mL/min, the maximum temperature gradients of 3.2 g/L, 5.0 g/L and 7.0 g/L carbon loading are the smallest, being 2737.5 ℃/m, 4387.5 ℃/m and 3837.5 ℃/m respectively. The regeneration efficiency is about 6% at 250 ℃, and 85.6% at 550 ℃. When the carbon loading is 5.0 g/L, the regeneration temperature is 500 ℃ and 550 ℃ and the gas flow rate increases to 300 mL/min, the maximum temperature, the maximum temperature gradient and the regeneration efficiency all reach the highest, and the regeneration efficiency ratio decreases from 4.6×10-5 J-1 to 1.8×10-5 J-1 with the increase in the gas flow rate. |
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