IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v208y2020ics0360544220314043.html
   My bibliography  Save this article

Effects of total pressure and CO2 partial pressure on the physicochemical properties and reactivity of pressurized coal char produced at rapid heating rate

Author

Listed:
  • Zhang, Wenda
  • Sun, Shaozeng
  • Zhao, Yijun
  • Zhao, Zujie
  • Wang, Pengxiang
  • Feng, Dongdong
  • Li, Pengfei

Abstract

The effects of the total pressure (0.1–1.3 MPa) and the CO2 partial pressure (0–0.45 MPa) on the physical structural properties, chemical structural properties and reactivity of Shenhua coal pressurized char at 1273 K were investigated in a pressurized drop tube furnace (PDTF). There were reverse-direction effects on char yield between total pressure and CO2 partial pressure for char preparation. Porosity characteristics were performed using an ASAP2020 instrument. It was found that same-direction increment effects on BET surface and porosity between total pressure and CO2 partial pressure for char preparation. Carbon structure and surface structure were performed by Raman and XPS methods. The results showed that both total pressure and CO2 partial pressure can promote the transformation of small aromatic structures to large aromatic structures and increase the graphitization degree of the char. With increasing total pressure and CO2 partial pressure, the unstable N-5 content decreased, while the N-6 and N-Q content increased.

Suggested Citation

  • Zhang, Wenda & Sun, Shaozeng & Zhao, Yijun & Zhao, Zujie & Wang, Pengxiang & Feng, Dongdong & Li, Pengfei, 2020. "Effects of total pressure and CO2 partial pressure on the physicochemical properties and reactivity of pressurized coal char produced at rapid heating rate," Energy, Elsevier, vol. 208(C).
  • Handle: RePEc:eee:energy:v:208:y:2020:i:c:s0360544220314043
    DOI: 10.1016/j.energy.2020.118297
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544220314043
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.energy.2020.118297?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. Bai, Yonghui & Wang, Yulong & Zhu, Shenghua & Li, Fan & Xie, Kechang, 2014. "Structural features and gasification reactivity of coal chars formed in Ar and CO2 atmospheres at elevated pressures," Energy, Elsevier, vol. 74(C), pages 464-470.
    2. Pang, Lei & Shao, Yingjuan & Zhong, Wenqi & Liu, Hao, 2018. "Experimental investigation on the coal combustion in a pressurized fluidized bed," Energy, Elsevier, vol. 165(PB), pages 1119-1128.
    3. Chen, Shiyi & Yu, Ran & Soomro, Ahsanullah & Xiang, Wenguo, 2019. "Thermodynamic assessment and optimization of a pressurized fluidized bed oxy-fuel combustion power plant with CO2 capture," Energy, Elsevier, vol. 175(C), pages 445-455.
    4. Gil, M.V. & Riaza, J. & Álvarez, L. & Pevida, C. & Pis, J.J. & Rubiera, F., 2012. "Oxy-fuel combustion kinetics and morphology of coal chars obtained in N2 and CO2 atmospheres in an entrained flow reactor," Applied Energy, Elsevier, vol. 91(1), pages 67-74.
    5. Lasek, Janusz A. & Janusz, Marcin & Zuwała, Jarosław & Głód, Krzysztof & Iluk, Andrzej, 2013. "Oxy-fuel combustion of selected solid fuels under atmospheric and elevated pressures," Energy, Elsevier, vol. 62(C), pages 105-112.
    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. Wang, Zhuozhi & Sun, Rui & Zhao, Yaying & Li, Yupeng & Ren, Xiaohan, 2019. "Effect of steam concentration on demineralized coal char surface behaviors and structural characteristics during the oxy-steam combustion process," Energy, Elsevier, vol. 174(C), pages 339-349.
    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. Zhu, Shujun & Hui, Jicheng & Lyu, Qinggang & Ouyang, Ziqu & Zeng, Xiongwei & Zhu, Jianguo & Liu, Jingzhang & Cao, Xiaoyang & Zhang, Xiaoyu & Ding, Hongliang & Liu, Yuhua, 2023. "Experimental study on pulverized coal swirl-opposed combustion preheated by a circulating fluidized bed. Part A. Wide-load operation and low-NOx emission characteristics," Energy, Elsevier, vol. 284(C).
    2. 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).
    3. Deng, Lihua & Zhang, Wenda & Sun, Shaozeng & Bai, Chenxi & Zhao, Yijun & Feng, Dongdong & Zhang, Linyao & Wu, Jiangquan, 2022. "Effect of pressure on the structure and reactivity of demineralized coal during O2/H2O thermal conversion process," Energy, Elsevier, vol. 244(PA).

    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. Zhu, Wenkun & Li, Xiaohui & Sun, Rui & Cao, Zhen & Yuan, Mengfan & Sun, Liutao & Yu, Xin & Wu, Jiangquan, 2022. "Investigation of the CN and C2 emission characteristics and microstructural evolution of coal to char using laser-induced breakdown spectroscopy and Raman spectroscopy," Energy, Elsevier, vol. 240(C).
    2. Odeh, Andrew O., 2015. "Exploring the potential of petrographics in understanding coal pyrolysis," Energy, Elsevier, vol. 87(C), pages 555-565.
    3. Xu, Jun & Liu, Jiawei & Ling, Peng & Zhang, Xin & Xu, Kai & He, Limo & Wang, Yi & Su, Sheng & Hu, Song & Xiang, Jun, 2020. "Raman spectroscopy of biochar from the pyrolysis of three typical Chinese biomasses: A novel method for rapidly evaluating the biochar property," Energy, Elsevier, vol. 202(C).
    4. Lasek, Janusz A. & Głód, Krzysztof & Słowik, Krzysztof, 2021. "The co-combustion of torrefied municipal solid waste and coal in bubbling fluidised bed combustor under atmospheric and elevated pressure," Renewable Energy, Elsevier, vol. 179(C), pages 828-841.
    5. Pang, Lei & Shao, Yingjuan & Zhong, Wenqi & Gong, Zheng & Liu, Hao, 2020. "Experimental study of NOx emissions in a 30 kWth pressurized oxy-coal fluidized bed combustor," Energy, Elsevier, vol. 194(C).
    6. Deng, Lihua & Zhang, Wenda & Sun, Shaozeng & Bai, Chenxi & Zhao, Yijun & Feng, Dongdong & Zhang, Linyao & Wu, Jiangquan, 2022. "Effect of pressure on the structure and reactivity of demineralized coal during O2/H2O thermal conversion process," Energy, Elsevier, vol. 244(PA).
    7. Meng, Wenliang & Wang, Dongliang & Zhou, Huairong & Yang, Yong & Li, Hongwei & Liao, Zuwei & Yang, Siyu & Hong, Xiaodong & Li, Guixian, 2023. "Carbon dioxide from oxy-fuel coal-fired power plant integrated green ammonia for urea synthesis: Process modeling, system analysis, and techno-economic evaluation," Energy, Elsevier, vol. 278(C).
    8. Tokarski, Stanisław & Głód, Krzysztof & Ściążko, Marek & Zuwała, Jarosław, 2015. "Comparative assessment of the energy effects of biomass combustion and co-firing in selected technologies," Energy, Elsevier, vol. 92(P1), pages 24-32.
    9. Zhang, Zihang & Yi, Baojun & Sun, Zhengshuai & Zhang, Qi & Feng, He & Hu, Hongyun & Huang, Xiangguo & Zhao, Chunqing, 2021. "Reaction process and characteristics for coal char gasification under changed CO2/H2O atmosphere in various reaction stages," Energy, Elsevier, vol. 229(C).
    10. 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).
    11. 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.
    12. Li, Shiyuan & Li, Haoyu & Li, Wei & Xu, Mingxin & Eddings, Eric G. & Ren, Qiangqiang & Lu, Qinggang, 2017. "Coal combustion emission and ash formation characteristics at high oxygen concentration in a 1MWth pilot-scale oxy-fuel circulating fluidized bed," Applied Energy, Elsevier, vol. 197(C), pages 203-211.
    13. Wander, Paulo R. & Bianchi, Flávio M. & Caetano, Nattan R. & Klunk, Marcos A. & Indrusiak, Maria Luiza S., 2020. "Cofiring low-rank coal and biomass in a bubbling fluidized bed with varying excess air ratio and fluidization velocity," Energy, Elsevier, vol. 203(C).
    14. Álvarez, L. & Gharebaghi, M. & Jones, J.M. & Pourkashanian, M. & Williams, A. & Riaza, J. & Pevida, C. & Pis, J.J. & Rubiera, F., 2013. "CFD modeling of oxy-coal combustion: Prediction of burnout, volatile and NO precursors release," Applied Energy, Elsevier, vol. 104(C), pages 653-665.
    15. Zhang, Chao & Zhao, Yangsheng & Feng, Zijun & Wang, Lei & Meng, Qiaorong & Lu, Yang & Gao, Qiang, 2023. "Comparative study on the chemical structure characteristics of lump coal during superheated water vapor pyrolysis and conventional pyrolysis," Energy, Elsevier, vol. 276(C).
    16. Oliveira, Flávio A.D. & Carvalho, João A. & Sobrinho, Pedro M. & de Castro, André, 2014. "Analysis of oxy-fuel combustion as an alternative to combustion with air in metal reheating furnaces," Energy, Elsevier, vol. 78(C), pages 290-297.
    17. Rahman, Zia ur & Wang, Xuebin & Zhang, Jiaye & Yang, Zhiwei & Dai, Gaofeng & Verma, Piyush & Mikulcic, Hrvoje & Vujanovic, Milan & Tan, Houzhang & Axelbaum, Richard L., 2022. "Nitrogen evolution, NOX formation and reduction in pressurized oxy coal combustion," Renewable and Sustainable Energy Reviews, Elsevier, vol. 157(C).
    18. Gu, Suqian & Xu, Zhiqiang & Ren, Yangguang & Tu, Yanan & Sun, Meijie & Liu, Xiangyang, 2021. "An approach for upgrading lignite to improve slurryability: Blending with direct coal liquefaction residue under microwave-assisted pyrolysis," Energy, Elsevier, vol. 222(C).
    19. Wendi Sun & Li Bai & Mingshu Chi & Xiuling Xu & Zhao Chen & Kecheng Yu, 2023. "Study on the Evolution Pattern of the Aromatics of Lignin during Hydrothermal Carbonization," Energies, MDPI, vol. 16(3), pages 1-14, January.
    20. Yao, Xiwen & Liu, Qinghua & Kang, Zijian & An, Zhixing & Zhou, Haodong & Xu, Kaili, 2023. "Quantitative study on thermal conversion behaviours and gas emission properties of biomass in nitrogen and in CO2/N2 mixtures by TGA/DTG and a fixed-bed tube furnace," Energy, Elsevier, vol. 270(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:energy:v:208:y:2020:i:c:s0360544220314043. 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.