IDEAS home Printed from https://ideas.repec.org/a/eee/appene/v179y2016icp650-659.html
   My bibliography  Save this article

Variation of the coal chemical structure and determination of the char molecular size at the early stage of rapid pyrolysis

Author

Listed:
  • Cui, Tongmin
  • Fan, Wenke
  • Dai, Zhenghua
  • Guo, Qinghua
  • Yu, Guangsuo
  • Wang, Fuchen

Abstract

Rapid pyrolysis (∼104K/s) experiments investigating lignite, bituminous coal and anthracite were conducted to study the effect of the thermal process on the coal structure. The interest was focused on the chemical structure variation occurring at the early stage of pyrolysis (0–500ms) and high temperature (1173–1773K), which includes the mass loss ratio, volatile content, element content and organic groups. A series of parameters was used to characterize the chemical structure, CH2/CH3 ratio, fraction of aromatic hydrogen and aromaticity (fa). The char’s molecular size was determined based on both ring condensation degree (R/C)u and equivalent diameter of the aromatic monomer (DC). This result demonstrated that these five chemical structural parameters (CSPs) increase with the pyrolysis time and temperature. The comparison of three types of coals reveals that the CSPs of lignite are lower and increase faster than those of bituminous coal and anthracite.

Suggested Citation

  • Cui, Tongmin & Fan, Wenke & Dai, Zhenghua & Guo, Qinghua & Yu, Guangsuo & Wang, Fuchen, 2016. "Variation of the coal chemical structure and determination of the char molecular size at the early stage of rapid pyrolysis," Applied Energy, Elsevier, vol. 179(C), pages 650-659.
    • Handle: RePEc:eee:appene:v:179:y:2016:i:c:p:650-659
    DOI: 10.1016/j.apenergy.2016.06.143
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S030626191630931X
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.apenergy.2016.06.143?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. Bhattacharya, Mita & Rafiq, Shuddhasattwa & Bhattacharya, Sankar, 2015. "The role of technology on the dynamics of coal consumption–economic growth: New evidence from China," Applied Energy, Elsevier, vol. 154(C), pages 686-695.
    2. Giuffrida, Antonio & Romano, Matteo C. & Lozza, Giovanni, 2011. "Thermodynamic analysis of air-blown gasification for IGCC applications," Applied Energy, Elsevier, vol. 88(11), pages 3949-3958.
    3. Liu, Peng & Zhang, Dexiang & Wang, Lanlan & Zhou, Yang & Pan, Tieying & Lu, Xilan, 2016. "The structure and pyrolysis product distribution of lignite from different sedimentary environment," Applied Energy, Elsevier, vol. 163(C), pages 254-262.
    4. Gomez, Arturo & Mahinpey, Nader, 2015. "A new model to estimate CO2 coal gasification kinetics based only on parent coal characterization properties," Applied Energy, Elsevier, vol. 137(C), pages 126-133.
    5. Johansen, Joakim M. & Gadsbøll, Rasmus & Thomsen, Jesper & Jensen, Peter A. & Glarborg, Peter & Ek, Paul & De Martini, Nikolai & Mancini, Marco & Weber, Roman & Mitchell, Reginald E., 2016. "Devolatilization kinetics of woody biomass at short residence times and high heating rates and peak temperatures," Applied Energy, Elsevier, vol. 162(C), pages 245-256.
    6. Sonibare, Oluwadayo O. & Haeger, Tobias & Foley, Stephen F., 2010. "Structural characterization of Nigerian coals by X-ray diffraction, Raman and FTIR spectroscopy," Energy, Elsevier, vol. 35(12), pages 5347-5353.
    7. Liu, Fang-Jing & Wei, Xian-Yong & Fan, Maohong & Zong, Zhi-Min, 2016. "Separation and structural characterization of the value-added chemicals from mild degradation of lignites: A review," Applied Energy, Elsevier, vol. 170(C), pages 415-436.
    8. Tremel, Alexander & Haselsteiner, Thomas & Kunze, Christian & Spliethoff, Hartmut, 2012. "Experimental investigation of high temperature and high pressure coal gasification," Applied Energy, Elsevier, vol. 92(C), pages 279-285.
    9. Yamashita, Kei & Barreto, Leonardo, 2005. "Energyplexes for the 21st century: Coal gasification for co-producing hydrogen, electricity and liquid fuels," Energy, Elsevier, vol. 30(13), pages 2453-2473.
    10. Trubetskaya, Anna & Jensen, Peter Arendt & Jensen, Anker Degn & Garcia Llamas, Angel David & Umeki, Kentaro & Gardini, Diego & Kling, Jens & Bates, Richard B. & Glarborg, Peter, 2016. "Effects of several types of biomass fuels on the yield, nanostructure and reactivity of soot from fast pyrolysis at high temperatures," Applied Energy, Elsevier, vol. 171(C), pages 468-482.
    11. Chen, Chih-Jung & Hung, Chen-I. & Chen, Wei-Hsin, 2012. "Numerical investigation on performance of coal gasification under various injection patterns in an entrained flow gasifier," Applied Energy, Elsevier, vol. 100(C), pages 218-228.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Lin, Xiongchao & Luo, Meng & Li, Shouyi & Yang, Yuanping & Chen, Xujun & Tian, Bin & Wang, Yonggang, 2017. "The evolutionary route of coal matrix during integrated cascade pyrolysis of a typical low-rank coal," Applied Energy, Elsevier, vol. 199(C), pages 335-346.
    2. Chai, Meiyun & Xie, Li & Yu, Xi & Zhang, Xingguang & Yang, Yang & Rahman, Md. Maksudur & Blanco, Paula H. & Liu, Ronghou & Bridgwater, Anthony V. & Cai, Junmeng, 2021. "Poplar wood torrefaction: Kinetics, thermochemistry and implications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 143(C).
    3. Li, Hongjun & Chang, Qinghua & Gao, Rui & Dai, Zhenghua & Chen, Xueli & Yu, Guangsuo & Wang, Fuchen, 2018. "Fractal characteristics and reactivity evolution of lignite during the upgrading process by supercritical CO2 extraction," Applied Energy, Elsevier, vol. 225(C), pages 559-569.
    4. Xu, Jun & Su, Sheng & Sun, Zhijun & Qing, Mengxia & Xiong, Zhe & Wang, Yi & Jiang, Long & Hu, Song & Xiang, Jun, 2016. "Effects of steam and CO2 on the characteristics of chars during devolatilization in oxy-steam combustion process," Applied Energy, Elsevier, vol. 182(C), pages 20-28.
    5. Xu, Jun & Tang, Hao & Su, Sheng & Liu, Jiawei & Xu, Kai & Qian, Kun & Wang, Yi & Zhou, Yingbiao & Hu, Song & Zhang, Anchao & Xiang, Jun, 2018. "A study of the relationships between coal structures and combustion characteristics: The insights from micro-Raman spectroscopy based on 32 kinds of Chinese coals," Applied Energy, Elsevier, vol. 212(C), pages 46-56.
    6. Wang, Chang'an & Wu, Song & Lv, Qiang & Liu, Xuan & Chen, Wufeng & Che, Defu, 2017. "Study on correlations of coal chemical properties based on database of real-time data," Applied Energy, Elsevier, vol. 204(C), pages 1115-1123.

    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. Ding, Lu & Dai, Zhenghua & Guo, Qinghua & Yu, Guangsuo, 2017. "Effects of in-situ interactions between steam and coal on pyrolysis and gasification characteristics of pulverized coals and coal water slurry," Applied Energy, Elsevier, vol. 187(C), pages 627-639.
    2. Xu, Shisen & Ren, Yongqiang & Wang, Baomin & Xu, Yue & Chen, Liang & Wang, Xiaolong & Xiao, Tiancun, 2014. "Development of a novel 2-stage entrained flow coal dry powder gasifier," Applied Energy, Elsevier, vol. 113(C), pages 318-323.
    3. Moioli, Stefania & Giuffrida, Antonio & Romano, Matteo C. & Pellegrini, Laura A. & Lozza, Giovanni, 2016. "Assessment of MDEA absorption process for sequential H2S removal and CO2 capture in air-blown IGCC plants," Applied Energy, Elsevier, vol. 183(C), pages 1452-1470.
    4. Fan, Yuqiang & Guan, Jun & He, Demin & Hong, Yu & Zhang, Qiumin, 2023. "The influence of inherent minerals on the constant-current electrolysis process of coal-water slurry," Energy, Elsevier, vol. 285(C).
    5. Li, Tian & Niu, Yanqing & Wang, Liang & Shaddix, Christopher & Løvås, Terese, 2018. "High temperature gasification of high heating-rate chars using a flat-flame reactor," Applied Energy, Elsevier, vol. 227(C), pages 100-107.
    6. Chen, Xiaodong & Kong, Lingxue & Bai, Jin & Dai, Xin & Li, Huaizhu & Bai, Zongqing & Li, Wen, 2017. "The key for sodium-rich coal utilization in entrained flow gasifier: The role of sodium on slag viscosity-temperature behavior at high temperatures," Applied Energy, Elsevier, vol. 206(C), pages 1241-1249.
    7. Mansouri Majoumerd, Mohammad & Raas, Han & De, Sudipta & Assadi, Mohsen, 2014. "Estimation of performance variation of future generation IGCC with coal quality and gasification process – Simulation results of EU H2-IGCC project," Applied Energy, Elsevier, vol. 113(C), pages 452-462.
    8. Chen, Chih-Jung & Hung, Chen-I. & Chen, Wei-Hsin, 2012. "Numerical investigation on performance of coal gasification under various injection patterns in an entrained flow gasifier," Applied Energy, Elsevier, vol. 100(C), pages 218-228.
    9. Zhang, Jie & Zheng, Nan & Wang, Jie, 2016. "Two-stage hydrogasification of different rank coals with a focus on relationships between yields of products and coal properties or structures," Applied Energy, Elsevier, vol. 173(C), pages 438-447.
    10. Xin, Lin & An, Mingyu & Feng, Mingze & Li, Kaixuan & Cheng, Weimin & Liu, Weitao & Hu, Xiangming & Wang, Zhigang & Han, Limin, 2021. "Study on pyrolysis characteristics of lump coal in the context of underground coal gasification," Energy, Elsevier, vol. 237(C).
    11. Trubetskaya, Anna & Timko, Michael T & Umeki, Kentaro, 2020. "Prediction of fast pyrolysis products yields using lignocellulosic compounds and ash contents," Applied Energy, Elsevier, vol. 257(C).
    12. Zhao, Mingxuan & Lv, Lianhong & Wu, Jing & Wang, Shen & Zhang, Nan & Bai, Zihan & Luo, Hong, 2022. "Total factor productivity of high coal-consuming industries and provincial coal consumption: Based on the dynamic spatial Durbin model," Energy, Elsevier, vol. 251(C).
    13. Abdul Rehman & Hengyun Ma & Magdalena Radulescu & Crenguta Ileana Sinisi & Zahid Yousaf, 2021. "Energy Crisis in Pakistan and Economic Progress: Decoupling the Impact of Coal Energy Consumption in Power and Brick Kilns," Mathematics, MDPI, vol. 9(17), pages 1-15, August.
    14. Shunbin Zhong & Huafu Shen & Ziheng Niu & Yang Yu & Lin Pan & Yaojun Fan & Atif Jahanger, 2022. "Moving towards Environmental Sustainability: Can Digital Economy Reduce Environmental Degradation in China?," IJERPH, MDPI, vol. 19(23), pages 1-23, November.
    15. Si, Mengting & Liu, Jiani & Zhang, Yindi & Liu, Bing & Luo, Zixue & Cheng, Qiang, 2024. "Effect of co-combustion of coal with biomass on the morphology of soot," Renewable Energy, Elsevier, vol. 226(C).
    16. Igor Donskoy, 2023. "Techno-Economic Efficiency Estimation of Promising Integrated Oxyfuel Gasification Combined-Cycle Power Plants with Carbon Capture," Clean Technol., MDPI, vol. 5(1), pages 1-18, February.
    17. Prabu, V. & Geeta, K., 2015. "CO2 enhanced in-situ oxy-coal gasification based carbon-neutral conventional power generating systems," Energy, Elsevier, vol. 84(C), pages 672-683.
    18. Szklo, Alexandre & Schaeffer, Roberto, 2006. "Alternative energy sources or integrated alternative energy systems? Oil as a modern lance of Peleus for the energy transition," Energy, Elsevier, vol. 31(14), pages 2513-2522.
    19. Kim, Ryang-Gyoon & Hwang, Chan-Won & Jeon, Chung-Hwan, 2014. "Kinetics of coal char gasification with CO2: Impact of internal/external diffusion at high temperature and elevated pressure," Applied Energy, Elsevier, vol. 129(C), pages 299-307.
    20. Li, Dun & Gao, Jianmin & Zhao, Ziqi & Du, Qian & Dong, Heming & Cui, Zhaoyang, 2022. "Effects of iron on coal pyrolysis-derived soot formation," Energy, Elsevier, vol. 249(C).

    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:appene:v:179:y:2016:i:c:p:650-659. 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.elsevier.com/wps/find/journaldescription.cws_home/405891/description#description .

    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.