Effects analysis on soot combustion performance enhancement in a rotary diesel particulate filter unit during continuous microwave heating
Effects analysis on soot combustion performance enhancement in a rotary diesel particulate filter unit during continuous microwave heating
复制标题
连续微波加热期间旋转式柴油颗粒过滤器装置烟灰燃烧性能增强效果分析
DOI：
10.1016/j.fuel.2020.118043
复制
发表时间：
2020-09-15
期刊：
影响因子：
7.4
通讯作者：
Deng, Yuanwang
中科院分区：
文献类型：
--
作者：
E, Jiaqiang;Zheng, Panyue;Deng, Yuanwang
本文利用流体力学和多孔介质理论建立了旋转式柴油机微粒过滤器(RDPF)装置的数学模型，并用FLUENT软件对其进行了数值模拟，得到了RDPF装置的速度分布、压力分布、湍动能分布等流场特性，直观地展示了RDPF装置的内部情况。为了进一步改善碳烟的燃烧性能，通过改变排气温度、废氧浓度、碳烟浓度、微波加热功率等参数，研究了不同条件下的再生时间和再生效率。结果表明，排气温度600~750K、排氧浓度0.11~0.15、碳烟浓度0.06~0.08、微波加热功率800~1200W有利于改善RDPF装置的碳烟燃烧性能。研究结果对提高RDPF装置的再生性能具有一定的参考价值。
In this paper, a mathematical model of a rotary diesel particulate filter (RDPF) unit is established using fluid mechanics and porous media theory, and simulated with Fluent software to obtain its flow field characteristics, including velocity distributions, pressure distribution, turbulent kinetic energy distribution, and the internal situations of RDPF unit are intuitively presented. Aiming at the further improvement of the soot combustion performance, changing many parameters such as exhaust temperature, exhaust oxygen concentration, soot concentration, microwave heating power, etc., its regeneration time and regeneration efficiency are studied under different conditions. The results show that the exhaust temperature with 600 similar to 750 K, the exhaust oxygen concentration with 0.11 similar to 0.15, the soot concentration with 0.06 similar to 0.08 and microwave heating power with 800 similar to 1200 W will be contributed to the improvement of the soot combustion performance in the RDPF unit. The research results are useful for enhancing the regeneration performance in RDPF unit.