纳米颗粒添加剂对柴油挥发及氧化过程的影响  

Effects of nano-particles on volatilization and oxidation characteristics of diesel fuel

作　　者：袁银男[1] 纪晨[2] 梅德清[2] 姜士阳[2] 吴焓 

机构地区：[1]南通大学机械工程学院,江苏南通215006 [2]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2015年第3期265-270,共6页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51376095);江苏高校优势学科建设工程项目(苏政办发〔2014〕72号);江苏省环保科研课题(2014049)

摘　　要：在氮气及空气的热重氛围下,研究了以平均粒径分别为20,50 nm的Al2O3和平均粒径为20nm的Ce O2这3种纳米材料配制成的质量浓度分别为50,100,150 mg·L-1的3种纳米柴油的挥发特性和氧化特性,运用控制变量法探究纳米颗粒的粒子质量浓度、粒径尺度及物质种类对纳米柴油挥发及氧化过程的影响.结果表明:在惰性氛围下,纳米颗粒延缓了柴油的挥发过程;随着纳米粒子质量浓度增加和粒径增大,纳米柴油的挥发速率减缓.在氧化氛围下,纳米颗粒加快了柴油的氧化过程;随着纳米粒子质量浓度增加和粒径减小,纳米柴油的氧化速率加快;具有催化功能的Ce O2纳米颗粒比同尺度的Al2O3纳米颗粒表现出更好的氧化作用效果.Under nitrogen and air atmospheres of thermo-gravity,the volatilization and oxidation characteristics of several fuel blends of diesel and nano-materials with Al2O3 particle average size of 20,50 nm and Ce O2 particle average size of 20 nm were investigated for adding concentration of 50,100 and150 mg·L-1. The impacts of nano-particle concentration,size and material on volatilization and oxidation process of nano-diesel were explored by control variable method. The results show that the volatilization process under nitrogen atmosphere is slowed down by nano-particles. Higher nano-particle concentration and bigger particle size can decrease the volatilization of nano-diesel. Under oxidation atmosphere,nano-particles can speed up the oxidation process. The diesel fuel oxidation is accelerated more obviously with higher nano-particle concentration and smaller size. Al2O3 particles with average size of 20 nm show more active effect on diesel oxidation than that of Ce O2 particles with the same size because of the cataly-tic function.

关 键 词：纳米颗粒 挥发特性 氧化特性 热重分析 失重速率 

分 类 号：TK428.9[动力工程及工程热物理—动力机械及工程]