Open AccessExperimental study on methane adsorption behaviour of different rank coals under variable temperature and pressure
Author(s) -
Zhentao Li,
Yunpeng Wang,
Dameng Liu,
Yidong Cai
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/360/1/012023
Subject(s) - adsorption , coal , methane , rank (graph theory) , coalbed methane , chemistry , mineralogy , petroleum engineering , coal mining , geology , organic chemistry , mathematics , combinatorics
To comprehensively study the methane adsorption behaviour of coals under variable temperature and pressure, a series of methane adsorption measurements were conducted at different temperatures and pressures for different rank coals from Ordos Basin and Qinshui Basin. The results show that the methane adsorption capacity and temperature exhibit a negative linear correlation under the same pressure series. The combined effects of the temperature and pressure reveal that the high-rank coal has the maximum methane adsorption capacity and the low-rank coal owns the least. During the low pressure region, the increase of adsorption capacity of high-rank coal is the largest, whereas the low-rank coal has the least change with the temperature and pressure increasing. However, in the high pressure region, the decrease of adsorption capacity of high-rank coal is the least, and the low-rank coal owns the largest of that.