地质体中沉积有机质的模拟生烃动力学研究  

Study on the Simulated Kinetics of Hydrocarbon Formation of Sedimentary Organic Matter

作　　者：周建伟[1] 钟宁宁[2] 

机构地区：[1]新乡学院化学与化工学院,河南新乡453003 [2]中国石油大学资源与信息学院,北京102249

出　　处：《河南化工》2009年第1期18-21,共4页Henan Chemical Industry

基　　金：国家自然科学基金资助项目(40472076)

摘　　要：采用热解方法对地质体中沉积有机质——源岩干酪根和固体沥青进行了生烃动力学研究，建立了平行一级反应动力学模型，求取了动力学参数活化能E和指数前因子A，主要反应的活化能集中在170—210kJ／mol的范围内。反映了干酪根和沥青是一个大分子网络体系，其热解过程涉及不同能级化学键的断裂。实验所得到的沉积有机质热解动力学参数，可用于样品母质类型判别和成熟度确定。Pyrolysis method is used to investigate the hydrocarbon generating kinetics of sedimentary organic matter,source rock kerogen and solid bitumen. The parallel first order reaction model is developed. The activation energy E and exponential front gene A of kinetic parameters for hydrocarbon formation are determined by using the developed model. The distribution of the apparent activation energy ranges from 125 kJ/mol to 250 kJ/mol, and the main reactions have the activation energy of 170 -210 kJ/mol,indicating the rupture of chemical bonds with different energy in the pyrolysis. In the experiment,the pyrolysis kinetic parameters of sedimentary organic matters can be widely used for the assessment of maturity, matrix type of samples etc.

关 键 词：沉积有机质 动力学 热解 活化能 

分 类 号：TQ013.2[化学工程]