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Study on Low Temperature Oxidation Characteristics of Oil Shale Based on Temperature Programmed System

Author

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  • Wenzhou Du

    (Mine Disaster Prevention and Control-Ministry of State Key Laboratory Breeding Base, Shandong University of Science and Technology, Qingdao 266590, China
    College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Yue Wang

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Xuelin Liu

    (College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

  • Lulu Sun

    (Mine Disaster Prevention and Control-Ministry of State Key Laboratory Breeding Base, Shandong University of Science and Technology, Qingdao 266590, China
    College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

Abstract

Oil shale is a kind of high-combustion heat mineral, and its oxidation in mining and storage are worth studying. To investigate the low-temperature oxidation characteristics of oil shale, the temperature, CO, alkane and alkene gases were analyzed using a temperature-programmed device. The results showed that the temperature of oil shale underwent three oxidation stages, namely a slow low-temperature oxidation stage, a rapid temperature-increasing oxidation stage, and a steady temperature-increasing stage. The higher the air supply rate is, the higher the crossing point temperature is. Similar to coal, CO also underwent three stages, namely a slow low-temperature oxidation stage, a rapid oxidation stage, and a steady increase stage. However, unlike coal, alkane and alkene gases produced by oil shale underwent four stages. They all had a concentration reduction stage with the maximum drop of 24.20%. Statistical classification of inflection temperature of various gases as their concentrations change showed that the temperature of 140 °C is the key temperature for group reactions, and above the temperature of 140 °C, all alkane and alkene gases underwent the rapid concentration increase stage.

Suggested Citation

  • Wenzhou Du & Yue Wang & Xuelin Liu & Lulu Sun, 2018. "Study on Low Temperature Oxidation Characteristics of Oil Shale Based on Temperature Programmed System," Energies, MDPI, vol. 11(10), pages 1-12, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2594-:d:172715
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    References listed on IDEAS

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    1. Saif, Tarik & Lin, Qingyang & Butcher, Alan R. & Bijeljic, Branko & Blunt, Martin J., 2017. "Multi-scale multi-dimensional microstructure imaging of oil shale pyrolysis using X-ray micro-tomography, automated ultra-high resolution SEM, MAPS Mineralogy and FIB-SEM," Applied Energy, Elsevier, vol. 202(C), pages 628-647.
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    Cited by:

    1. Liu, Qiqi & Liu, Chuang & Ma, Jiayu & Liu, Zhenyi & Sun, Lulu, 2024. "Comprehensive evaluation of low-temperature oxidation characteristics of low-rank bituminous coal and oil shale," Energy, Elsevier, vol. 294(C).

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