Abstract
A non-thermal plasma (NTP) reactor was used to generate ozone for diesel particulate filter (DPF) regeneration. The kinetic mechanism of ozone thermal decomposition reaction is explored, and the effect of temperature on the change of ozone concentration is analyzed. The changes of the internal temperature and the concentration of regeneration products such as CO2 and CO during the regeneration under constant temperature and non-constant temperature conditions are then studied and the influence of different regeneration environments on the regeneration is analyzed in combination with the decomposition law of ozone. In the non-constant temperature condition, DPF surface temperature changes significantly with time. The results show that when using an NTP reactor to generate ozone, the activation energy of the decomposition reaction is 2.80755 × 104 J/mol and the law of thermal decomposition reaction can be described as \(k = 190.76 \times {e^{( - 2.80755 \times {{10}^4}/RT)}}\). During DPF regeneration, the overall regeneration rate and ozone utilization rate in the non-constant temperature environment are higher than in the constant temperature environment and the temperature change (delta-T) peak rises with the increase of PM deposition. The regeneration with NTP under non-constant thermal condition is an effective way to improve the efficiency of DPF regeneration.
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Acknowledgement
This work is currently supported by the National Natural Science Foundation of China (51806085, 51676089), the China Postdoctoral Science Foundation Project (2018M642175), the Double Innovation talents of Jiangsu Province and Jiangsu University Youth Talent Cultivation Program Funded Project, and Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX19_1604).
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Wang, W., Cai, Y., Shi, Y. et al. Experimental Investigation of Ozone Decomposition in Diesel Particulate Filter Regeneration with Non-Thermal Plasma Technology. Int.J Automot. Technol. 22, 871–881 (2021). https://doi.org/10.1007/s12239-021-0079-2
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DOI: https://doi.org/10.1007/s12239-021-0079-2