Reaction mechanism and kinetics of pressurized pyrolysis of Chinese oil shale in the presence of water  

作　　者：FANG Chaohe LI Shuyuan MA Guili WANG Hongyan HUANG Zhilong 

机构地区：[1]China University of Petroleum,Changping,Beijing 102249,China [2]Research Institute of Petroleum Exploration and Development-Langfang,Hebei 065007,China [3]Shenhua Ningxia Coal Industry Group Coal-Chemical Company,Ningxia 951000,China

出　　处：《Petroleum Science》2012年第4期532-534,共3页石油科学（英文版）

基　　金：financial support from the National Science and Technology Major Project of China(Grant No. 2008ZX05018);Taishan Scholar Constructive Engineering Foundation of Shandong province(No. ts20120518)

摘　　要：A study of reaction mechanisms and chemical kinetics of pressurized pyrolysis of Chinese Liushuhe oil shale in the presence of water were conducted using an autoclave for simulating and modeling in-situ underground thermal degradation.It was found that the oil shale was first pyrolyzed to form pyrobitumen,shale oil,shale gas and residue,then the pyrobitumen was further pyrolyzed to form more shale oil,shale gas,and residue.It means that there are two consecutive and parallel reactions.With increasing temperature,the pyrobitumen yield,as intermediate,first reached a maximum,then decreased to approximately zero.The kinetics results show that both these reactions are first order.The activation energy of pyrobitumen formation from oil shale is lower than that of shale oil formation from pyrobitumen.A study of reaction mechanisms and chemical kinetics of pressurized pyrolysis of Chinese Liushuhe oil shale in the presence of water were conducted using an autoclave for simulating and modeling in-situ underground thermal degradation.It was found that the oil shale was first pyrolyzed to form pyrobitumen,shale oil,shale gas and residue,then the pyrobitumen was further pyrolyzed to form more shale oil,shale gas,and residue.It means that there are two consecutive and parallel reactions.With increasing temperature,the pyrobitumen yield,as intermediate,first reached a maximum,then decreased to approximately zero.The kinetics results show that both these reactions are first order.The activation energy of pyrobitumen formation from oil shale is lower than that of shale oil formation from pyrobitumen.

关 键 词：Oil shale PYROBITUMEN pressurized pyrolysis in-situ underground retorting reaction mechanism chemical kinetics 

分 类 号：O643.1[理学—物理化学] X705[理学—化学]