Influence of grain size and gas pressure on diffusion kinetics and CH 4 sorption isotherm on coal

Kozieł, Katarzyna; Gajda, Aleksandra; Skiba, Marta; Skoczylas, Norbert; Pajdak, Anna

doi:10.24425/ams.2024.149824

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Tytuł artykułu

Influence of grain size and gas pressure on diffusion kinetics and CH 4 sorption isotherm on coal

Autorzy

Kozieł Katarzyna , Gajda Aleksandra , Skiba Marta , Skoczylas Norbert , Pajdak Anna

Treść / Zawartość

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DOI

10.24425/ams.2024.149824

Warianty tytułu

Języki publikacji

Abstrakty

The article presents a methodology for predicting the impact of the longwall shearer’s control parameter on methane emission rate to the working of a longwall based on computational fluid dynamics (CFD) methods. The methodology was applied to the Z-11a longwall panel conditions at the Jankowice Hard Coal Mine. The results of the methane emissions rate in the working of a longwall for three variations of the position of the longwall shearer are shown and discussed. The modelled issue’s geometry, numerical grid, assumptions, and boundary conditions are presented. The filtration parameters of goafs are discussed. Relationships to estimate the various sources of methane emissions into the air flowing around the longwall panel Z-11a are presented. The results of the model tests were compared with the mining data in the Z-11a longwall panel at the Jankowice Hard Coal Mine.

Słowa kluczowe

coal CH4 sorption diffusion kinetics diffusion coefficient pore structure

węgiel sorpcja CH4 kinetyka dyfuzji współczynnik dyfuzji struktura porów

Wydawca

Instytut Mechaniki Górotworu PAN

Czasopismo

Archives of Mining Sciences

Rocznik

2024

Tom

Vol. 68, no. 1

Strony

3--23

Opis fizyczny

Bibliogr. 58 poz., tab., wykr.

Twórcy

autor

Kozieł Katarzyna

Strata Mechanics Research Institute of The Polish Academy of Sciences, 27 Reymonta Str., 30-059 Kraków, Poland

https://orcid.org/0000-0002-1913-4450

autor

Gajda Aleksandra

Strata Mechanics Research Institute of The Polish Academy of Sciences, 27 Reymonta Str., 30-059 Kraków, Poland

https://orcid.org/0000-0001-7641-5446

autor

Skiba Marta

Strata Mechanics Research Institute of The Polish Academy of Sciences, 27 Reymonta Str., 30-059 Kraków, Poland

https://orcid.org/0000-0001-5037-5642

autor

Skoczylas Norbert

AGH University of Kraków, Faculty of Geology, Geophysics and Environmental Protection, Al. Mickiewicza 30, 30-059 Kraków, Poland

https://orcid.org/0000-0003-1933-2374

autor

Pajdak Anna

pajdak@imgpan.pl

Strata Mechanics Research Institute of The Polish Academy of Sciences, 27 Reymonta Str., 30-059 Kraków, Poland

https://orcid.org/0000-0003-4390-4256

Bibliografia

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