SCALING PRESENTATION OF THE PROCESS OF METHANE DESORPTION FROM NATURAL SORBENT
Curves for methane and water desorption from coals obtained experimentally for three values of temperature have been considered together with desorption from samples treated by electromagnetic field. The mass transfer in porous adsorbent structure is shown to correspond to subdiffusion conditions, it can be descrided within the theory of particle transfer by a fractal porous medium. The approach has been used to calculate the energy of methane diffusion activation for coals of different metamorphism stages.