• High-gravity technology amplifies gas–liquid contact area by ~1155 times, significantly enhancing hydrate formation kinetics for methane recovery from coal mine gas.
• Optimal conditions (20 mL/min liquid flow, 600 r/min rotation) yield an initial hydrate growth rate of 58.59 mmol/(mol h) and methane recovery of 50.76%, outperforming static systems by 71.33 and 0.58 times, respectively.
• The high-gravity system reduces process duration by 41.17% at 90% gas uptake completion, while improving methane enrichment in the hydrate phase as confirmed by gas chromatography and Raman spectroscopy.
• This study provides a promising pathway for efficient and clean utilization of low-concentration coalbed methane, contributing to energy conservation and greenhouse gas emission reduction.