摘要
采用聚氨酯泡沫与聚四氟乙烯滤纸联合采样与气质联用分析技术,对一国Ⅲ排放水平的高压共轨柴油机燃用F-T柴油、国Ⅲ柴油及其混合燃油时尾气中气相与颗粒固相的多环芳香烃(PAHs)进行了研究。结果表明,燃用F-T柴油时PAHs排放比燃用国Ⅲ柴油时低50%以上;且随着F-T比例的增大,气相和固相PAHs均呈下降的趋势;PAHs大部分吸附在聚氨酯泡沫上而少量吸附在聚四氟乙烯滤纸上。在排放的PAHs中,气相PAHs以2环和3环为主,占95%以上,固相以4环和5环为主,则只在5%以内。
The emissions of polycyclic aromatic hydrocarbons （PAHs） in gas-phase and particular-phase from a state-Ⅲ common-rail diesel engine fueled with F-T diesel,state-Ⅲ diesel and their blended fuels are studied by sampling using polyurethane foam （PUF） and PTFE membrane filter and measuring with GC-MS analysis technique.The results show that the PAHs emission with F-T diesel fuel is 50 ％ lower than that with State-Ⅲ diesel,and with the increase of F-T diesel proportion,the emissions of PAHs in both gaseous and solid phases decrease.The most of PAHs emissions are adsorbed in PUF with only a few of them adsorbed on PTFE membrane filter.In the emissions of PAHs,those in gaseous phase accounting for over 95 ％ are mainly of two or three rings,while those in solid phase having a four or five ring structure only account for less than 5 ％.
出处
《汽车工程》
EI
CSCD
北大核心
2014年第1期43-47,共5页
Automotive Engineering
关键词
柴油机
F-T柴油
多环芳香烃
diesel engine
Fischer-Tropsch diesel fuels
polycyclic aromatic hydrocarbon
