NOVELTY - Adsorptive drying of purified biogas (biomethane) with a methane content of 90 vol.% and regeneration of loaded adsorbent using at least two adsorbers containing solid adsorbent as loose filling, which are alternately loaded and regenerated by a heated gas stream, comprises carrying out drying and regeneration as a closed biogas-circuit. The separate layers comprising silica gel and molecular sieves are used as adsorbents, which are passed through the silica gel layer for drying biogas. The heated biomethane, which is dried at temperature of up to 150 degrees C is used for regeneration of adsorbents.    USE - The method is useful for adsorptive drying of purified biogas (biomethane) with a methane content of 90 vol.% and regeneration of loaded adsorbent.    ADVANTAGE - The method: prevents the foreign substances from entering the purified biogas; and does not alter the content of the methane in the gas to be purified.    DETAILED DESCRIPTION - Adsorptive drying of purified biogas (biomethane) with a methane content of 90 vol.% and regeneration of loaded adsorbent using at least two adsorbers containing solid adsorbent as loose filling, which are alternately loaded and regenerated by a heated gas stream, comprises carrying out drying and regeneration as closed biogas-circuit. The separate layers comprising silica gel and molecular sieves are used as adsorbents, which are passed through the silica gel layer for drying the biogas. The heated biomethane, which is dried at a temperature of up to 150 degrees C is used for the regeneration of adsorbents and is fed back into an output stream of purified biogas after contacting with adsorbent. The cooled, dried biomethane is contacted with the adsorbent after the completion of regeneration, which is subsequently fed back into the output stream of purified biogas. The methane-rich water accumulated during the drying and regeneration is recycled to the biogas production and/or -cleaning.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of the system for adsorptive drying of purified biogas (biomethane) with a methane content of 90 vol.% and regeneration of loaded adsorbent.    First pipeline (1)    Second pipeline (2)    First adsorber (A1)    Second adsorber (A2)    Compressor (V1)