J4 ›› 2012, Vol. 42 ›› Issue (1): 25-29.

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Pyrolysis Characteristics and Kinetics of Liushuhe Oil Shale

LEI Huai-yu1,2|WANG Hong-yan1,3|LIU De-xun3|ZHONG Tai-xian4|LIU Xing-yuan5|ZHAO Qun3|HAO Ming-xiang3   

  1. 1.Industrial College| Peking University, Beijing100871, China;
    2.Exploration and Production Company, PetroChina, Beijing100007, China;
    3.Langfang Branch|Research Institute of Petroleum Exploration and Development, Langfang065007|Hebei, China;
    4.China Petroleum Science &|Technology Management Department, Beijing100011, China;
    5.China Petroleum Materials Corporation, Beijing100029, China
  • Received:2011-05-06 Online:2012-01-26 Published:2012-01-26

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Abstract:

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.

Key words: mathematical model, oil shale, pyrolysis characteristics, Liushuhe basin

CLC Number: 

  • P618.13
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