Distribution law of temperature changes during methane adsorption and desorption in coal using infrared thermography technology
Source abstract
Abstract
Gas adsorption and desorption is a thermodynamic process that takes place within coal as temperature changes and that is related to methane (CH4) storage. As infrared thermographic technology has been applied in this context to measure surface temperature changes, the aim of this research was to further elucidate the distribution law underlying this process as well as the thermal effects induced by heat adsorption and desorption in coal. Specimens of two different coal ranks were used in this study, and the surface temperature changes seen in the latter were detected. A contour line map was then drawn on the basis of initial results enabling a distribution law of temperature changes for samples. The results show that different regions of coal sample surfaces exhibit different heating rates during the adsorption process, but they all depends on gas storage capacity to a certain extent. It proposes a correlation coefficient that expresses the relationship between temperature change and gas adsorption capacity that could also be used to evaluate the feasibility of coalbed CH4 extraction in the field. And finally, this study is deduced a method to reveal the actual adsorption capacity of coal or CH4 reservoirs in in situ coal seams.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Coal Properties and Utilization · Hydrocarbon exploration and reservoir analysis · Mineral Processing and Grinding
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Mining Engineering, Taiyuan University of Technology 1 , Taiyuan 030024, P. R. China
Institute of Mining Technology, Taiyuan University of Technology 2 , Taiyuan 030024, P. R. China
Funding
National Natural Science Foundation of China
References (30)
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