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Rheological behavior of coal bio-oil slurries

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  • Feng, Ping
  • Hao, Lifang
  • Huo, Chaofei
  • Wang, Ze
  • Lin, Weigang
  • Song, Wenli

Abstract

Coal bio-oil slurries (CBSs) were prepared by blending coal with bio-oil from the fast pyrolysis, and their apparent viscosities were measured by a rotary viscometer. The influences of coal rank, solid concentration, particle size distribution and temperature on the apparent viscosity and rheological properties of slurries were investigated. Additionally, the grey relational analysis was employed to determine the order of importance of factors affecting the apparent viscosity for different rank coals. Results show that, the CBS exhibits non-Newtonian fluid behavior and can be described by Herschel–Bulkley equation. The main factors for different rank coals affecting apparent viscosity of CBS are inherent moisture and carboxyl groups. The maximum solid concentration of CBS can reach 45–47 wt. % for Shenmu bituminous coal. Appropriate solid particle size distribution and preparation temperature can provide satisfied slurries with low viscosity.

Suggested Citation

  • Feng, Ping & Hao, Lifang & Huo, Chaofei & Wang, Ze & Lin, Weigang & Song, Wenli, 2014. "Rheological behavior of coal bio-oil slurries," Energy, Elsevier, vol. 66(C), pages 744-749.
    • Handle: RePEc:eee:energy:v:66:y:2014:i:c:p:744-749
    DOI: 10.1016/j.energy.2014.01.097
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    3. Yi, Shuping & Hao, Lifang & Li, Songgeng & Song, Wenli, 2019. "The influence of water content in rice husk bio-oil on the rheological properties of coal bio-oil slurries," Energy, Elsevier, vol. 189(C).
    4. Wang, Ruikun & Zhao, Zhenghui & Liu, Jianzhong & Lv, Yukun & Ye, Xuemin, 2016. "Enhancing the storage stability of petroleum coke slurry by producing biogas from sludge fermentation," Energy, Elsevier, vol. 113(C), pages 319-327.
    5. Feng, Ping & Lin, Weigang & Jensen, Peter Arendt & Song, Wenli & Hao, Lifang & Raffelt, Klaus & Dam-Johansen, Kim, 2016. "Entrained flow gasification of coal/bio-oil slurries," Energy, Elsevier, vol. 111(C), pages 793-802.
    6. Piskunov, Maxim & Romanov, Daniil & Strizhak, Pavel, 2023. "Stability and rheology of carbon-containing composite liquid fuels under subambient temperatures," Energy, Elsevier, vol. 278(PA).
    7. Wang, Chu & Ding, Haozhi & Zhang, Yiming & Zhu, Xifeng, 2020. "Analysis of property variation and stability on the aging of bio-oil from fractional condensation," Renewable Energy, Elsevier, vol. 148(C), pages 720-728.
    8. 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).

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