摘要
为研究生物柴油颗粒C—H官能团、孔隙结构及氧化活性,在一台高压共轨柴油机上进行台架试验,分别燃用柴油与大豆油甲酯(SME)、棕榈油甲酯(PME)和地沟油甲酯(WME)生物柴油,采集分析了排气颗粒物.结果表明:4种燃油燃烧颗粒物的孔隙结构有所不同,生物柴油颗粒比表面积、孔容积均大于柴油颗粒,孔径小于柴油颗粒,颗粒物的孔隙特征与比表面积是影响颗粒脂肪族C—H官能团相对含量的重要因素.相比于柴油燃烧的颗粒,生物柴油燃烧颗粒中可溶性有机成分(SOF)和灰分含量较高,氧化活性较高.燃用碘值低、含氧量高的WME生物柴油,排气颗粒比表面积、孔容积和氧化活性增加.
In order to study the C—H functional group,pore structure and oxidation activity of biodiesel particles,bench tests were carried out on a high-pressure common rail diesel engine,fueled with diesel and soybean oil methyl ester(SME),palm oil methyl ester(PME)and waste oil methyl ester(WME)biodiesel,respectively,and exhaust particulate matters were collected and analyzed.The results show that the pore structures of the four types of fuel combustion particles are different.The specific surface area and pore volume of biodiesel particles are larger than those of diesel particles,and the pore size is smaller than that of diesel particles.The pore characteristics and specific surface area of particles are important factors affecting the relative content of aliphatic C—H functional groups in particles.Compared with diesel-burned particles,biodiesel-burned particles have higher soluble organic components(SOF)and ash content and higher oxidation activity.Burning WME biodiesel with low iodine value and high oxygen content increases the specific surface area,pore volume and oxidation activity of exhaust particles.
作者
张登攀
苏力
郭坤伟
贾长凯
杜家益
袁银男
Zhang Dengpan;Su Li;Guo Kunwei;Jia Changkai;Du Jiayi;Yuan Yinnan(Department of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China;School of Energy,Soochow University,Suzhou 215006,China)
出处
《燃烧科学与技术》
CAS
CSCD
北大核心
2022年第5期514-522,共9页
Journal of Combustion Science and Technology
基金
国家自然科学基金资助项目(51876133).
关键词
生物柴油
颗粒物
碘值
孔隙结构
氧化活性
biodiesel
particulate matter
iodine value
pore structure
oxidation activity