Adsorption Characteristics of Lignite in China

Kexin Wang; Xuehai Fu; Yong Qin; Santigie K. Sesay

doi:10.1007/s12583-011-0189-2

Volume 22 Issue 3

Jun 2011

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Article Contents

Journal of Earth Science > 2011 > 22(3): 371-371.

Kexin Wang, Xuehai Fu, Yong Qin, Santigie K. Sesay. Adsorption Characteristics of Lignite in China. Journal of Earth Science, 2011, 22(3): 371-371. doi: 10.1007/s12583-011-0189-2

Citation:

Kexin Wang, Xuehai Fu, Yong Qin, Santigie K. Sesay. Adsorption Characteristics of Lignite in China. Journal of Earth Science, 2011, 22(3): 371-371. doi: 10.1007/s12583-011-0189-2

Kexin Wang, Xuehai Fu, Yong Qin, Santigie K. Sesay. Adsorption Characteristics of Lignite in China. Journal of Earth Science, 2011, 22(3): 371-371. doi: 10.1007/s12583-011-0189-2

Citation:

Kexin Wang, Xuehai Fu, Yong Qin, Santigie K. Sesay. Adsorption Characteristics of Lignite in China. Journal of Earth Science, 2011, 22(3): 371-371. doi: 10.1007/s12583-011-0189-2

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Adsorption Characteristics of Lignite in China

doi: 10.1007/s12583-011-0189-2

1.
School of Resources & Earth Science, China University of Mining & Technology, Xuzhou 221116, China
2.
Science and Technology Information Service, Jiangsu Bureau of Coal Geology, Nanjing 210046, China

Funds:

the National Natural Science Foundation of China 40872104

the 2008 Project of Postgraduate Scientific Innovation of University in Jiangsu CX08B_023Z

More Information

Corresponding author: Kexin Wang, kathy_wang@foxmail.com
Received Date: 23 Nov 2009
Accepted Date: 10 Mar 2010
Publish Date: 01 Jun 2011

Abstract

Abstract

To help in ascertaining methane content of lignite reservoir in China, the isothermal adsorption measurements of methane have been performed on moisture-equilibrated coals of some typical lignite-bearing basins, which comprise maximum reflectance of vitrinite (R_{o, max}) ranging from 0.24% to 0.50%. Related to other coal properties, our analysis shows that methane adsorption of lignite is mainly affected by coalification, as well as by maceral composition, moisture content, and seam temperature. Maximum methane capacities of moisture-equilibrated lignite coals show a continuously increasing (and reasonably exponential) trend with increasing R_{o, max}. Methane adsorption capacity decreases with maceral composition besides the range 40%–60%, respectively. Moisture content shows discretely correspondence with methane capacity. Methane capacity also decreases as seam temperature increases, and its reduction increases with pressure under a certain temperature.
- lignite,
- methane adsorption,
- characteristics,
- influencing factor

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References(20)

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