Adaption of Theoretical Adsorption Model on Coal: Physical Structure

Wu Guodai; Wu Guodai; Wu Guodai; Wu Guodai; Pan Linhua; Pan Linhua; Huang Bingxiang; Luan Jinhua; Luan Jinhua; Luan Jinhua; Zhang Ye; Zhang Ye; Zhang Ruigang; Zhang Ruigang; Zhang Ruigang; Sun Zheng

doi:10.3389/feart.2021.691311

Frontiers in Earth Science (Aug 2021)

Adaption of Theoretical Adsorption Model on Coal: Physical Structure

Wu Guodai,
Wu Guodai,
Wu Guodai,
Wu Guodai,
Pan Linhua,
Pan Linhua,
Huang Bingxiang,
Luan Jinhua,
Luan Jinhua,
Luan Jinhua,
Zhang Ye,
Zhang Ye,
Zhang Ruigang,
Zhang Ruigang,
Zhang Ruigang,
Sun Zheng

Affiliations

Wu Guodai: State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, China
Wu Guodai: National and Local Joint Engineering Research Center of Shale Gas Exploration and Development, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Wu Guodai: Key Laboratory of Shale Gas Exploration, Ministry of Land and Resources, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Wu Guodai: Chongqing Key Laboratory of Exogenic Mineralization and Mine Environment, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Pan Linhua: National and Local Joint Engineering Research Center of Shale Gas Exploration and Development, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Pan Linhua: Key Laboratory of Shale Gas Exploration, Ministry of Land and Resources, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Huang Bingxiang: State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, China
Luan Jinhua: National and Local Joint Engineering Research Center of Shale Gas Exploration and Development, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Luan Jinhua: Key Laboratory of Shale Gas Exploration, Ministry of Land and Resources, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Luan Jinhua: Chongqing Key Laboratory of Exogenic Mineralization and Mine Environment, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Zhang Ye: National and Local Joint Engineering Research Center of Shale Gas Exploration and Development, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Zhang Ye: Key Laboratory of Shale Gas Exploration, Ministry of Land and Resources, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Zhang Ruigang: National and Local Joint Engineering Research Center of Shale Gas Exploration and Development, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Zhang Ruigang: Key Laboratory of Shale Gas Exploration, Ministry of Land and Resources, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Zhang Ruigang: Chongqing Key Laboratory of Exogenic Mineralization and Mine Environment, Chongqing Institute of Geology and Mineral Resources, Chongqing, China
Sun Zheng: State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, China

DOI: https://doi.org/10.3389/feart.2021.691311
Journal volume & issue: Vol. 9

Abstract

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With the motivation to investigate the role of coal physical structure on the adsorption performance of coal reservoir, 18 different types of coal samples with different coal structures were collected from six coal profiles of four production mines located at China. The adsorption characteristics of CH4 on coal samples with different coal structures were examined, and then experimental results were fitted and analyzed by the Langmuir model and the adsorption potential model (D-R and D-A). The prominent factors in terms of adsorption capacity of coal with different coal structures and its adaptability to the model were discussed. Results indicate the following: a) under the condition of a similar coal rank, the adsorption performance of coal is governed by coal rock composition and adsorption heat, the effect of structural deformation on the adsorption performance of coal is not obvious; b) the Langmuir model has a certain adaptability to coal samples with different coal structures, while the D-R model is evidently not suitable to describe coal samples with scaly coal, part of broken coal with small vitrinite content; c) the D-A model has a high adaptability to coal samples with various coal structure types, and the stronger the coal deformation is, the higher the accuracy is.

Published in Frontiers in Earth Science

ISSN: 2296-6463 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Science
Website: https://www.frontiersin.org/journals/earth-science

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