基于DBD柴油尾气烃类物质净化特性及分析
张传玖 , 李鹏 , 徐东亮 , 赵彬彬 , 荣俊锋 , 陈明功
现代化工 ›› 2026, Vol. 46 ›› Issue (S1) : 146 -151.
基于DBD柴油尾气烃类物质净化特性及分析
Research on synergistic catalytic purification of hydrocarbons in diesel exhaust by dielectric barrier discharge (DBD)
以乙烯为目标烃类污染物,采用自研介质阻挡放电反应器,以工业木质素为碳源制备B-C、Ru-C两类掺杂碳基催化剂,构建非热等离子体协同催化体系,乙烯净化率提升20%。Ru-C催化剂性能显著优于B-C催化剂,在净化过程中起主导作用。最佳反应工况为:Ru-C催化剂装载量20 g、放电电压19 kV、进气流量3 L/min、乙烯初始浓度8.91 mmol/L,对乙烯的去除效率可达94.6%。经响应面分析,工况影响程度排序为:乙烯初始浓度>放电电压>进气流量。
Targeting ethylene as the representative hydrocarbon pollutant,a self-designed dielectric barrier discharge reactor was employed in this study.Using industrial lignin as a low-cost carbon precursor,two types of heteroatom-doped carbon catalysts (B-C and Ru-C) were prepared via a melt synthesis strategy.A non-thermal plasma-catalysis synergistic system was established,and the ethylene purification efficiency was improved by 20%.The Ru-C catalyst exhibited significantly better catalytic performance than the B-C catalyst and played a dominant role in the purification process.Under the optimized conditions (Ru-C catalyst dosage:20 g,discharge voltage:19 kV,gas flow rate:3 L/min,initial ethylene concentration:8.91 mmol/L),the ethylene removal efficiency reached 94.6%.Response surface methodology indicated that the order of influence of operational parameters was:initial ethylene concentration>discharge voltage>gas flow rate.
diesel exhaust / hydrocarbons / dielectric barrier discharge / catalytic purification
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