Abstract
Coalbed gas (CBG) has been widely used as an important energy source. However, its utilization and allocation system is imperfect in mining areas. During the utilization process, a large amount of CBG is discharged into the air, causing environmental pollution. In this study, we proposed a “full spectrum-domain-time” CBG utilization model. In this model, by combining high methane concentration gas power generation, low methane concentration gas purification, and ultra-low methane concentration gas thermal storage and oxidation utilization, we were able to utilize CBG with full-spectrum of methane concentrations. In addition, by establishing CBG transportation and storage system in mining area, we were able to realize CBG supply in the entire network domain. Furthermore, based on the time series prediction algorithm, the CBG demand of different mining areas is predicted and regulatorily met by real time allocation. Through these three steps, an efficient “full spectrum-domain-time” CBG utilization system was formed and practically applied in Yangquan mining area. The application results showed that under the comprehensive control of “full spectrum-domain-time” CBG utilization model, CBG with methane concentration ≥0.2% could be used in the mining area and its utilization rate increased year by year, reaching the highest of 77.15%. Overall, our study provided a reference for the efficient CBG utilization in the mining area.
Highlights
Coalbed gas (CBG) is the major source of gas disasters in coal mines, causing a major problem in coal production (Wang and Du, 2020; Yuan, 2016; Zhou et al, 2019)
According to the China’s “13th Five-Year Plan” from 2015 to 2020 (Wen et al, 2019), in the year of 2020, the proven geological reserve of newly-increased CBG reserve is 420 billion cubic meters, the extracted CBG volume will reach 24 billion cubic meters, of which 14 billion cubic meters will be extracted from coal mines, and the utilization rate of CBG will increase to 50%
The main reason for such a low utilization rate is that the gas extracted from underground coal mines mostly has methane concentration
Summary
Coalbed gas (CBG) is the major source of gas disasters in coal mines, causing a major problem in coal production (Wang and Du, 2020; Yuan, 2016; Zhou et al, 2019). The main reason for such a low utilization rate is that the gas extracted from underground coal mines mostly has methane concentration
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
