油页岩热解过程中部分重金属元素的挥发动力学研究  

Volatilization Behavior of Heavy Metals During Oil Shale Pyrolysis

作　　者：柏静儒[1] 王擎[1] 焦国军[2] 关晓辉[1] 

机构地区：[1]东北电力大学油页岩综合利用教育部工程研究中心,吉林132012 [2]华能国际电力股份有限公司上安电厂,石家庄050081

出　　处：《动力工程学报》2011年第10期784-788,796,共6页Journal of Chinese Society of Power Engineering

基　　金：中国电机工程学会电力青年科技创新资助项目;国家自然科学基金资助项目(50876018)

摘　　要：以桦甸油页岩为试样,研究了油页岩在热解过程中重金属元素的挥发规律,并对油页岩中重金属元素的挥发动力学机理进行了分析.结果表明：随着热解温度的升高,重金属挥发率变化情况基本相似,其热解过程迁移曲线均呈现S形状,Weibull函数能够很好地描述重金属元素在油页岩热解过程中的挥发行为;在油页岩热解过程中,重金属元素挥发动力学活化能E处于30~130kJ/mol;各重金属元素迁移的频率因子相对较低,均不高于1×107min-1.活化能E和频率因子A之间呈线性关系;初始热解温度低的元素其挥发活化能也较低.Taking the Huadian oil shale as an object of study,volatilization behavior of heavy metals during oil shale pyrolysis was studied,while the kinetic mechanism analyzed.Results show that with the increase of pyrolysis temperature,the volatilization rate of heavy metals is basically the same with each other.The migration curve of heavy metals shows an S shape during oil shale pyrolysis,for which Weibull function can be used to describe the migration behavior.Moreover,the migration activation energy of heavy metals lies in 30-130 kJ/mol,with a relatively low frequency factor,generally less than 1×107/min.There exists a liner relationship between the E and lnA.Besides,elements with lower initial pyrolysis temperature usually represent lower migration activation energy as well.

关 键 词：油页岩 重金属元素 热解 挥发动力学 Weibull函数 

分 类 号：P618.12[天文地球—矿床学]