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正丁醇对柴油机颗粒组分与形貌特征的影响

瞿 磊 王 忠 胡慧慧 李晓晓 赵 洋

瞿 磊, 王 忠, 胡慧慧, 李晓晓, 赵 洋. 正丁醇对柴油机颗粒组分与形貌特征的影响[J]. 环境科学研究, 2015, 28(10): 1518-1523.
引用本文: 瞿 磊, 王 忠, 胡慧慧, 李晓晓, 赵 洋. 正丁醇对柴油机颗粒组分与形貌特征的影响[J]. 环境科学研究, 2015, 28(10): 1518-1523.
QU Lei, WANG Zhong, HU Huihui, LI Xiaoxiao, ZHAO Yang. Effects of Butanol on Components and Morphology of Particles Emitted by Diesel Engines[J]. Research of Environmental Sciences, 2015, 28(10): 1518-1523.
Citation: QU Lei, WANG Zhong, HU Huihui, LI Xiaoxiao, ZHAO Yang. Effects of Butanol on Components and Morphology of Particles Emitted by Diesel Engines[J]. Research of Environmental Sciences, 2015, 28(10): 1518-1523.

正丁醇对柴油机颗粒组分与形貌特征的影响

基金项目: 国家自然科学基金项目(51376083);江苏省普通高校研究生科研创新计划项目(CXZZ13_0672,KYLX_1035)

Effects of Butanol on Components and Morphology of Particles Emitted by Diesel Engines

  • 摘要: 为探讨柴油机燃用正丁醇-柴油混合燃料降低颗粒排放的机理,采用热重分析仪与场发射扫描电子显微镜,重点对正丁醇-柴油混合燃料燃烧的颗粒形貌特征进行研究,分析了颗粒的组分、微观结构以及粒径分布随w(正丁醇)的变化规律. 结果表明:正丁醇-柴油混合燃料燃烧的颗粒呈团簇状结构,随着w(正丁醇)的增加,团聚程度逐渐提高,排列结构更加紧密;颗粒的粒径逐渐减小,柴油、B5、B10〔B5、B10是指w(正丁醇)分别为5%、10%的正丁醇-柴油混合燃料〕燃烧的颗粒平均粒径分别为1.43、0.85、0.52 μm;颗粒中的主要成分为碳烟,其质量分数约为60%,随着w(正丁醇)的增加,碳烟和可溶有机物组分的质量分数有所增加,硫酸盐、金属等不易挥发组分以及金属元素的质量分数逐渐减少. 研究显示,添加正丁醇,可促进颗粒转化、改善颗粒的氧化过程,使颗粒向小粒径方向移动;由于颗粒中可溶有机物组分含量增加,因此提高了颗粒在碰撞过程中凝并的概率,致使颗粒的团聚程度增加.

     

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出版历程
  • 收稿日期:  2015-03-03
  • 修回日期:  2015-07-14
  • 刊出日期:  2015-10-25

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