Study on the evolution model of coal porosity based on pyrolysis reaction kinetics.
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| Title: | Study on the evolution model of coal porosity based on pyrolysis reaction kinetics. |
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| Authors: | Li, Li1,2 (AUTHOR), Xi, Zhenzhu1 (AUTHOR), Liu, Jian3,4,5 (AUTHOR) 5102135@163.com, Wang, Yaozong6 (AUTHOR) |
| Source: | Energy Exploration & Exploitation. Jul2026, Vol. 44 Issue 4, p1874-1890. 17p. |
| Subject Terms: | *Pyrolysis kinetics, *Porosity, *Coal mining, *Chemical reactions |
| Abstract: | In situ thermal injection modification is an effective approach to address issues such as low production efficiency and poor safety in deep coal mining. During pyrolysis, the pore structure of coal significantly changes, which in turn alters the permeability of pyrolyzed coal seams. Research on porosity evolution models during pyrolysis is crucial for evaluating oil and gas production efficiency and assessing groundwater environmental impacts in mining areas. To address the current limitations of experimental methods that cannot achieve real-time continuous measurement and quantitative description, a universal porosity evolution model for coal during pyrolysis is established in this study. The model is based on the mechanism of organic matter decomposition and is combined with pyrolysis reaction kinetics. Taking the No.2 coal seam of Cixi Mine in Fengfeng Mining Area and the No.12 coal seam of Zhaogezhuang Mine in Kailuan Mining Area, both with a burial depth of over 1000 m, as the research objects, the calculated values were compared with the measured data. The error was relatively small, and the simulated curve of coal porosity variation during pyrolysis was highly consistent with the measured curve, which proves that the established model can accurately and quantify the porosity evolution process of pyrolyzed coal. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 194727767 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Study on the evolution model of coal porosity based on pyrolysis reaction kinetics. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Li%2C+Li%22">Li, Li</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xi%2C+Zhenzhu%22">Xi, Zhenzhu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Jian%22">Liu, Jian</searchLink><relatesTo>3,4,5</relatesTo> (AUTHOR)<i> 5102135@163.com</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Yaozong%22">Wang, Yaozong</searchLink><relatesTo>6</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energy+Exploration+%26+Exploitation%22">Energy Exploration & Exploitation</searchLink>. Jul2026, Vol. 44 Issue 4, p1874-1890. 17p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Pyrolysis+kinetics%22">Pyrolysis kinetics</searchLink><br />*<searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink><br />*<searchLink fieldCode="DE" term="%22Coal+mining%22">Coal mining</searchLink><br />*<searchLink fieldCode="DE" term="%22Chemical+reactions%22">Chemical reactions</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In situ thermal injection modification is an effective approach to address issues such as low production efficiency and poor safety in deep coal mining. During pyrolysis, the pore structure of coal significantly changes, which in turn alters the permeability of pyrolyzed coal seams. Research on porosity evolution models during pyrolysis is crucial for evaluating oil and gas production efficiency and assessing groundwater environmental impacts in mining areas. To address the current limitations of experimental methods that cannot achieve real-time continuous measurement and quantitative description, a universal porosity evolution model for coal during pyrolysis is established in this study. The model is based on the mechanism of organic matter decomposition and is combined with pyrolysis reaction kinetics. Taking the No.2 coal seam of Cixi Mine in Fengfeng Mining Area and the No.12 coal seam of Zhaogezhuang Mine in Kailuan Mining Area, both with a burial depth of over 1000 m, as the research objects, the calculated values were compared with the measured data. The error was relatively small, and the simulated curve of coal porosity variation during pyrolysis was highly consistent with the measured curve, which proves that the established model can accurately and quantify the porosity evolution process of pyrolyzed coal. [ABSTRACT FROM AUTHOR] |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1177/01445987261430457 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 1874 Subjects: – SubjectFull: Pyrolysis kinetics Type: general – SubjectFull: Porosity Type: general – SubjectFull: Coal mining Type: general – SubjectFull: Chemical reactions Type: general Titles: – TitleFull: Study on the evolution model of coal porosity based on pyrolysis reaction kinetics. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Li, Li – PersonEntity: Name: NameFull: Xi, Zhenzhu – PersonEntity: Name: NameFull: Liu, Jian – PersonEntity: Name: NameFull: Wang, Yaozong IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 01445987 Numbering: – Type: volume Value: 44 – Type: issue Value: 4 Titles: – TitleFull: Energy Exploration & Exploitation Type: main |
| ResultId | 1 |
