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Construction of a New Type of Coal Moisture Control Device Based on the Characteristic of Indirect Drying Process of Coking Coal

Author

Listed:
  • Ming Yan

    (School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China)

  • Xinnan Song

    (School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China)

  • Jin Tian

    (School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China)

  • Xuebin Lv

    (School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China)

  • Ze Zhang

    (School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China)

  • Xiaoyan Yu

    (School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China)

  • Shuting Zhang

    (School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China)

Abstract

This paper presents an in-depth study on the indirect drying characteristics and interface renewal. By comparing the drying rate curve, it is found that shortening the surface drying stage, which contains a repeated evaporation-diffusion-condensation process of moisture, is the key to improve the total drying efficiency. By stirring the coal and realizing the interface renewal between the bottom layer and the surface layer, the drying efficiency reached seven times than that of static indirect drying. Based on indirect heat transfer with high heat and mass transfer rate, a new type of indirect heat transfer moving bed coal moisture control device is designed. At the same time, Fluent fluid mechanics software is used for mathematical modeling and simulation experiments. It is proved that the designed moving bed coal moisture control device has a good application prospect in coal pre-drying technology.

Suggested Citation

  • Ming Yan & Xinnan Song & Jin Tian & Xuebin Lv & Ze Zhang & Xiaoyan Yu & Shuting Zhang, 2020. "Construction of a New Type of Coal Moisture Control Device Based on the Characteristic of Indirect Drying Process of Coking Coal," Energies, MDPI, vol. 13(16), pages 1-20, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:16:p:4162-:d:397779
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    References listed on IDEAS

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    1. Heng Chen & Zhen Qi & Qiao Chen & Yunyun Wu & Gang Xu & Yongping Yang, 2018. "Modified High Back-Pressure Heating System Integrated with Raw Coal Pre-Drying in Combined Heat and Power Unit," Energies, MDPI, vol. 11(9), pages 1-16, September.
    2. Zbigniew Plutecki & Paweł Sattler & Krystian Ryszczyk & Anna Duczkowska & Stanisław Anweiler, 2020. "Thermokinetics of Brown Coal during a Fluidized Drying Process," Energies, MDPI, vol. 13(3), pages 1-16, February.
    3. Valery Meshalkin & Vladimir Bobkov & Maksim Dli & Vincenzo Dovì, 2019. "Optimization of Energy and Resource Efficiency in a Multistage Drying Process of Phosphate Pellets," Energies, MDPI, vol. 12(17), pages 1-17, September.
    4. Morgana de Vasconcellos Araújo & Balbina Raquel de Brito Correia & Vanderson Alves Agra Brandão & Iran Rodrigues de Oliveira & Rosilda Sousa Santos & Guilherme Luiz de Oliveira Neto & Leonardo Pereira, 2020. "Convective Drying of Ceramic Bricks by CFD: Transport Phenomena and Process Parameters Analysis," Energies, MDPI, vol. 13(8), pages 1-18, April.
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    Cited by:

    1. Elisiane S. Lima & João M. P. Q. Delgado & Ana S. Guimarães & Wanderson M. P. B. Lima & Ivonete B. Santos & Josivanda P. Gomes & Rosilda S. Santos & Anderson F. Vilela & Arianne D. Viana & Genival S. , 2021. "Drying and Heating Processes in Arbitrarily Shaped Clay Materials Using Lumped Phenomenological Modeling," Energies, MDPI, vol. 14(14), pages 1-25, July.
    2. Ze Zhang & Shuting Zhang, 2021. "Indirect Drying and Coking Characteristics of Coking Coal with Soda Residue Additive," Energies, MDPI, vol. 14(3), pages 1-17, January.

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