IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v265y2023ics0360544222032042.html
   My bibliography  Save this article

Optimized TGA-based experimental method for studying intrinsic kinetics of coal char oxidation under moderate or intense low-oxygen dilution oxy-fuel conditions

Author

Listed:
  • Hu, Fan
  • Xiong, Biao
  • Liu, Xuhui
  • Huang, Xiaohong
  • Li, Yu
  • Liu, Zhaohui

Abstract

Accurate assessment of coal char oxidation kinetics is essential for the design of efficient combustion systems; nonetheless currently, there is little research on this aspect under moderate or intense low-oxygen dilution (MILD) oxy-fuel (MO) conditions. In this study, experimental and modeling studies were conducted for analyzing the intrinsic kinetic properties of coal char oxidation under MILD air-combustion (MA) and MO conditions based on thermogravimetric analysis (TGA). The experimental conditions were improved to minimize various diffusion resistances in the crucible during the TGA experiments. Under the optimal conditions of TGA experiments, the reactivity differences of coal char under the MA and MO atmospheres were small. Both nonlinear model-fitting and linear model-free analysis methods were used to analyze kinetic parameters of coal char oxidation. The results showed that the random pore model correlated the best with the experimental results. The activation energies of coal char under the optimal conditions in MA and MO atmospheres (i.e., 104.4 kJ/mol and 98.2 kJ/mol, respectively) were much higher than those obtained by the conventional method. The reaction orders of coal char oxidation in MA and MO atmospheres were close to 1.0, and the specific values were affected by the diffusion effect and background atmosphere.

Suggested Citation

  • Hu, Fan & Xiong, Biao & Liu, Xuhui & Huang, Xiaohong & Li, Yu & Liu, Zhaohui, 2023. "Optimized TGA-based experimental method for studying intrinsic kinetics of coal char oxidation under moderate or intense low-oxygen dilution oxy-fuel conditions," Energy, Elsevier, vol. 265(C).
    • Handle: RePEc:eee:energy:v:265:y:2023:i:c:s0360544222032042
    DOI: 10.1016/j.energy.2022.126318
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544222032042
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2022.126318?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Hu, Fan & Li, Pengfei & Zhang, Tai & Zu, Daohua & Cheng, Pengfei & Liu, Yaowei & Mi, Jianchun & Liu, Zhaohui, 2022. "Experimental investigation on co-firing residual char and pulverized coal under MILD combustion using low-temperature preheating air," Energy, Elsevier, vol. 244(PA).
    2. Fordoei, Esmaeil Ebrahimi & Boyaghchi, Fateme Ahmadi, 2022. "Influence of wall thermal conditions on the ignition, flame structure, and temperature behaviors in air-fuel, oxygen-enhanced, and oxy-fuel combustion under the MILD and high-temperature regimes," Energy, Elsevier, vol. 255(C).
    3. Huang, Xiaohong & Hu, Fan & Liu, Xuhui & Liu, Zhaohui, 2022. "Structure and reactivity of chars prepared from low-volatile coal under O2/N2 and O2/CO2 conditions in a flat-flame assisted entrained flow reactor," Energy, Elsevier, vol. 261(PB).
    4. Jiang, Kai & Ashworth, Peta, 2021. "The development of Carbon Capture Utilization and Storage (CCUS) research in China: A bibliometric perspective," Renewable and Sustainable Energy Reviews, Elsevier, vol. 138(C).
    5. Liu, Shibo & Zou, Chun & Song, Yu & Cheng, Sizhe & Lin, Qianjin, 2019. "Experimental and numerical study of laminar flame speeds of CH4/NH3 mixtures under oxy-fuel combustion," Energy, Elsevier, vol. 175(C), pages 250-258.
    6. Vincent, Shubha Shalini & Mahinpey, Nader & Aqsha, Aqsha, 2014. "Mass transfer studies during CO2 gasification of torrefied and pyrolyzed chars," Energy, Elsevier, vol. 67(C), pages 319-327.
    7. Xin, Yue & Zhang, Yindi & Xue, Peng & Wang, Ke & Adu, Emmanuel & Tontiwachwuthikul, Paitoon, 2021. "The optimization and thermodynamic and economic estimation analysis for CO2 compression-liquefaction process of CCUS system using LNG cold energy," Energy, Elsevier, vol. 236(C).
    8. Gil, M.V. & Riaza, J. & Álvarez, L. & Pevida, C. & Pis, J.J. & Rubiera, F., 2012. "Kinetic models for the oxy-fuel combustion of coal and coal/biomass blend chars obtained in N2 and CO2 atmospheres," Energy, Elsevier, vol. 48(1), pages 510-518.
    9. Wang, Xuebin & Zhang, Jiaye & Xu, Xinwei & Mikulčić, Hrvoje & Li, Yan & Zhou, Yuegui & Tan, Houzhang, 2020. "Numerical study of biomass Co-firing under Oxy-MILD mode," Renewable Energy, Elsevier, vol. 146(C), pages 2566-2576.
    10. Kuang, Yucheng & He, Boshu & Tong, Wenxiao & Wang, Chaojun & Ying, Zhaoping, 2020. "Effects of oxygen concentration and inlet velocity on pulverized coal MILD combustion," Energy, Elsevier, vol. 198(C).
    11. Hu, Fan & Li, Pengfei & Guo, Junjun & Liu, Zhaohui & Wang, Lin & Mi, Jianchun & Dally, Bassam & Zheng, Chuguang, 2018. "Global reaction mechanisms for MILD oxy-combustion of methane," Energy, Elsevier, vol. 147(C), pages 839-857.
    12. Khabbazian, Ghasem & Aminian, Javad & Khoshkhoo, Ramin Haghighi, 2022. "Experimental and numerical investigation of MILD combustion in a pilot-scale water heater," Energy, Elsevier, vol. 239(PA).
    13. Wang, Chaowei & Wang, Chang'an & Feng, Qinqin & Mao, Qisen & Gao, Xinyue & Du, Yongbo & Li, Guangyu & Che, Defu, 2022. "Experimental evaluation on NOx formation and burnout characteristics of oxy-fuel co-combustion of ultra-low volatile carbon-based solid fuels and bituminous coal," Energy, Elsevier, vol. 248(C).
    14. Kuang, Yucheng & He, Boshu & Wang, Chaojun & Tong, Wenxiao & He, Di, 2021. "Numerical analyses of MILD and conventional combustions with the Eddy Dissipation Concept (EDC)," Energy, Elsevier, vol. 237(C).
    15. Jayaraman, Kandasamy & Kök, Mustafa Versan & Gökalp, Iskender, 2020. "Combustion mechanism and model free kinetics of different origin coal samples: Thermal analysis approach," Energy, Elsevier, vol. 204(C).
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Hu, Fan & Xiong, Biao & Huang, Xiaohong & Liu, Zhaohui, 2023. "Theoretical analysis and experimental verification of diminishing the diffusion influence on determination of char oxidation kinetics by thermo-gravimetric analysis," Energy, Elsevier, vol. 275(C).
    2. Shaker, Ahmad & Fordoei, E. Ebrahimi & Boyaghchi, Fateme Ahmadi, 2023. "Study of NO emission from CH4-air, oxygen-enriched, and oxy-CH4 combustion under HTC and MILD regimes: Impact of wall thermal condition in different oxidant temperature and dilution level," Energy, Elsevier, vol. 277(C).
    3. Hu, Fan & Li, Pengfei & Zhang, Tai & Zu, Daohua & Cheng, Pengfei & Liu, Yaowei & Mi, Jianchun & Liu, Zhaohui, 2022. "Experimental investigation on co-firing residual char and pulverized coal under MILD combustion using low-temperature preheating air," Energy, Elsevier, vol. 244(PA).
    4. Xianlei Chen & Manqi Wang & Bin Wang & Huadong Hao & Haolei Shi & Zenan Wu & Junxue Chen & Limei Gai & Hengcong Tao & Baikang Zhu & Bohong Wang, 2023. "Energy Consumption Reduction and Sustainable Development for Oil & Gas Transport and Storage Engineering," Energies, MDPI, vol. 16(4), pages 1-16, February.
    5. Sayadzadeh, Mohammad Esmaiel & Samani, Majid Riahi & Toghraie, Davood & Emami, Sobhan & Eftekhari, Seyed Ali, 2023. "Numerical study on pollutant emissions characteristics and chemical and physical exergy analysis in Mild combustion," Energy, Elsevier, vol. 278(PB).
    6. Zhao, Zhenghong & Zhang, Zewu & Zha, Xiaojian & Gao, Ge & Li, Xiaoshan & Wu, Fan & Luo, Cong & Zhang, Liqi, 2023. "Internal association between combustion behavior and NOx emissions of pulverized coal MILD-oxy combustion affected by adding H2O," Energy, Elsevier, vol. 263(PD).
    7. Shunji Kang & Zhi Shen & Xizhou Shen & Liuya Fang & Li Xiang & Wenze Yang, 2021. "Experimental investigation on CO2 desorption kinetics from MDEA + PZ and comparison with MDEA/MDEA + DEA aqueous solutions with thermo‐gravimetric analysis method," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 11(5), pages 974-987, October.
    8. Granados, David A. & Chejne, Farid & Mejía, Juan M. & Gómez, Carlos A. & Berrío, Ariel & Jurado, William J., 2014. "Effect of flue gas recirculation during oxy-fuel combustion in a rotary cement kiln," Energy, Elsevier, vol. 64(C), pages 615-625.
    9. Wang, Xuebin & Zhang, Jiaye & Xu, Xinwei & Mikulčić, Hrvoje & Li, Yan & Zhou, Yuegui & Tan, Houzhang, 2020. "Numerical study of biomass Co-firing under Oxy-MILD mode," Renewable Energy, Elsevier, vol. 146(C), pages 2566-2576.
    10. Jozaalizadeh, Toomaj & Toghraie, Davood, 2019. "Numerical investigation behavior of reacting flow for flameless oxidation technology of MILD combustion: Effect of fluctuating temperature of inlet co-flow," Energy, Elsevier, vol. 178(C), pages 530-537.
    11. Obara, Shin'ya, 2023. "Economic performance of an SOFC combined system with green hydrogen methanation of stored CO2," Energy, Elsevier, vol. 262(PA).
    12. Liu, Wei & Han, Dongyang & Xu, Hao & Chu, Xiangyu & Qin, Yueping, 2023. "Modeling of gas migration in a dual-porosity coal seam around a borehole: the effects of three types of driving forces in coal matrix," Energy, Elsevier, vol. 264(C).
    13. Zhang, Jiaye & Chen, Chongming & Zhou, Ao & Rahman, Zia ur & Wang, Xuebin & Stojiljković, Dragoslava & Manić, Nebojsa & Vujanović, Milan & Tan, Houzhang, 2022. "Morphology of char particles from coal pyrolysis in a pressurized entrained flow reactor: Effects of pressure and atmosphere," Energy, Elsevier, vol. 238(PB).
    14. Ni, Guanhua & Dou, Haoran & Li, Zhao & Zhu, Chuanjie & Sun, Gongshuai & Hu, Xiangming & Wang, Gang & Liu, Yixin & Wang, Zhenyang, 2022. "Study on the combustion characteristics of bituminous coal modified by typical inorganic acids," Energy, Elsevier, vol. 261(PA).
    15. Zhao, Jingyu & Hang, Gai & Song, Jiajia & Lu, Shiping & Ming, Hanqi & Chang, Jiaming & Deng, Jun & Zhang, Yanni & Shu, Chi-Min, 2023. "Spontaneous oxidation kinetics of weathered coal based upon thermogravimetric characteristics," Energy, Elsevier, vol. 275(C).
    16. Liu, Yang & Fu, Peifang & Yu, Bo & Yan, Weijie & Chen, Yumin & Zhou, Huaichun, 2023. "Intrinsic combustion kinetics of rapid-pyrolysis Zhundong coal char," Energy, Elsevier, vol. 262(PB).
    17. Hu, Yingying & Wu, Wei, 2023. "Can fossil energy make a soft landing？— the carbon-neutral pathway in China accompanying CCS," Energy Policy, Elsevier, vol. 174(C).
    18. Aprianti, Nabila & Faizal, Muhammad & Said, Muhammad & Nasir, Subriyer & Fudholi, Ahmad, 2023. "Gasification kinetic and thermodynamic parameters of fine coal using thermogravimetric analysis," Energy, Elsevier, vol. 268(C).
    19. Ma, Zhangke & Cheng, Leming & Wang, Qinhui & Li, Liyao & Luo, Guanwen & Zhang, Weiguo, 2022. "Co-combustion characteristics and CO2 emissions of low-calorific multi-fuels by TG-FTIR analysis," Energy, Elsevier, vol. 252(C).
    20. Zou, Huihuang & Liu, Chao & Evrendilek, Fatih & He, Yao & Liu, Jingyong, 2021. "Evaluation of reaction mechanisms and emissions of oily sludge and coal co-combustions in O2/CO2 and O2/N2 atmospheres," Renewable Energy, Elsevier, vol. 171(C), pages 1327-1343.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:265:y:2023:i:c:s0360544222032042. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.