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微量元素铈对沥青热解过程的影响
引用本文:张念炳,刘卫,温良英,黎志英.微量元素铈对沥青热解过程的影响[J].有色金属(冶炼部分),2016(7):30-33.
作者姓名:张念炳  刘卫  温良英  黎志英
作者单位:贵州师范大学 材料与建筑工程学院,贵州师范大学 材料与建筑工程学院,重庆大学 材料科学与工程学院,贵州大学 材料与冶金学院
基金项目:贵州省科学技术基金项目(黔科合J字[2015]2110号);贵州省科技计划项目(黔科合高G字[2012]4002);贵阳市白云区科技项目(白科合同[2013]29号,[2015]31号)
摘    要:利用热重分析仪(TG-DTG)研究了微量元素铈加入沥青前后的热解动力学模型,测定了铈元素加入的炭阳极CO2/空气残余率并进行了XRD衍射分析。结果表明,随着微量元素铈的加入,热解速度放慢,热解温度区间变宽,表观活化能降低,热解反应更容易发生,沥青产焦率增加4.79个百分点;炭阳极晶粒厚度变大,减少了活性质点数;可提高炭阳极在CO2和空气中的残余率,可降低炭阳极的额外消耗。

关 键 词:  沥青  动力学  炭阳极
收稿时间:2016/1/20 0:00:00
修稿时间:2016/1/25 0:00:00

Effect of Cerium Element on Asphalt Pyrolysis Process
ZHANG Nian-bing,LIU Wei,WEN Liang-ying and LI Zhi-ying.Effect of Cerium Element on Asphalt Pyrolysis Process[J].Nonferrous Metals(Extractive Metallurgy),2016(7):30-33.
Authors:ZHANG Nian-bing  LIU Wei  WEN Liang-ying and LI Zhi-ying
Affiliation:College of Material and Civil Engineering,Guizhou Normal University,,,
Abstract:Pyrolysis process of pitch before and after addition of cerium element was tested with TG-DTG method. Carbon anode reactivity was tested in CO2 and air atmosphere respectively. Microstructure of carbon anodes is tested by XRD. The results show that with addition of cerium elements, pyrolysis rate slowed down, pyrolysis temperature range broadened, apparent activation energy of pitch pyrolysis is reduced, pyrolysis reaction is easier to happen, and production rate of asphalt coke rises by 4.79 percent point. Carbon anode grain thickness is enlarged, living nature point is reduced, residual rate of carbon anode in CO2 and air are improved, and extra consumption of carbon anode is reduced.
Keywords:cerium  pitch  kinetics  carbon anode
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