气体温度通过非热等离子体对碳烟氧化的影响:二维数值研究,集成反应流和放电模型
Jaehyun Nam1,2, Sangwoo Kim1, Jungho Hwang3
1School of Mechanical Engineering, Yonsei University, 134 Sinchon-Dong, Seodaemun-Gu, Seoul, 03722, Republic of Korea.
Environmental science and pollution research international
|January 31, 2024
概括
非热等离子有效地从柴油过器中去除碳灰尘. 较高的气体温度提高了烟尘去除效率和速度,而较高的电压增加了速度,但降低了效率.
科学领域:
- 等离子体科学与工程等离子体科学与工程
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 非热等离子体 (NTP) 通过碳烟 (CS) 氧化提供高效的低温再生柴油颗粒过器.
- 有限的数值研究存在于NTP驱动的CS氧化的空间方面.
- 背景气体加热对NTP的CS氧化性能的影响需要进一步了解.
研究的目的:
- 为了研究气体温度对NTP异质CS氧化的影响.
- 分析应用电压对CS移除率和能源效率的影响.
- 为了评估NTP在CS氧化中的能量转换效率.
主要方法:
- 用一个二维数值模型来模拟CS的NTP治疗.
- 模拟涵盖了气体温度范围为323-573 K.
- 关键的氧化物种如O,O2和O3被确定为主要氧化剂.
主要成果:
- 在NTP处理过程中,CS主要被原子氧,分子氧和臭氧氧化.
- 通过NTP去除CS的能量效率在0.1至2.6gkWh-1.1之间.
- 高的气体温度增加了CS去除率和效率;更高的应用于电压增加了效率的成本.
结论:
- 气体温度显著影响NTP在CS氧化中的有效性,较高的温度是有益的.
- 应用电压在CS移除率和能源效率之间进行了权衡.
- 从电输入转化为化学能量的能量转换效率,用于通过NTP进行CS氧化,被发现为0.030.23%.
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