柳树河油页岩的热解特征及动力学  

Pyrolysis Characteristics and Kinetics of Liushuhe Oil Shale

作　　者：雷怀玉[1,2] 王红岩[1,3] 刘德勋[3] 钟太贤 刘兴元 赵群[3] 郝明祥[3] 

机构地区：[1]北京大学工学院,北京100871 [2]中国石油勘探与生产分公司,北京100007 [3]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [4]中国石油科技管理部,北京100011 [5]中国石油物资公司,北京100029

出　　处：《吉林大学学报（地球科学版）》2012年第1期25-29,共5页Journal of Jilin University：Earth Science Edition

基　　金：国家科技重大专项(2008ZX05018)

摘　　要：利用岩石-热解评价仪研究了200～600℃不同升温速率(10、15、20、25、30℃/min)下柳树河盆地油页岩热解生烃特征,利用Friedman法和Sestak反应机制,求出了油页岩的反应活化能和反应函数,建立了热解动力学模型,可用于计算热解生烃率和达到某一转化率所需要的时间。研究发现,油页岩的反应活化能并不是一个定值,随着反应温度的增加逐渐增大。这是因为油页岩热解是一个极其复杂的多步反应过程,在不同的温度区间内具有不同的反应机理。Pyrolysis kinetics characteristics of oil shale samples obtained from Liushuhe basin were investigated by Rock Eval analysis.The pyrolysis characteristics were studied at different heating rates（10,15,20,25,30 ℃/min） from 200 ℃ to 600 ℃.Based on the Friedman mathematical formula and Sestak reaction mechanism,the reaction activation energy and reaction function were obtained,and so the pyrolysis mathematical model was developed.This mathematical model can be used to calculate the hydrocarbon conversion and required times for the fixed conversion.It is found that the reaction activation energy is not a constant and is a variable with the variety of reaction temperature.The reason is that the pyrolysis reaction process of oil shale is complicated multistep reaction,in which reaction mechanism is variable in different temperature range.

关 键 词：数学模型 油页岩 热解特征 柳树河盆地 

分 类 号：P618.13[天文地球—矿床学] TQ534[天文地球—地质学]