NOVELTY - The pyrolysis plant comprises an electrically heated heat chamber (1) through which longitudinal screw conveyors equipped with guide tubes (3, 4, 5) are mounted horizontally or slightly inclined, where outlets are provided at ends of the tubes for discharging the generated pyrolysis gas, transferring into a dust collection system, and supplying the resulting degassed material residues to a waste container through the screw conveyors and vacuum hose (10). The guide tubes are arranged in groups. Altitude and sides of the tubes of each group are arranged at a calculated distance.    USE - The plant is useful for pyrolysis of biomass and energy recyclable material (claimed) e.g. wood parts such as forest wood, sawdust, sawdust or wood chips, car tires, and hospital waste.    ADVANTAGE - The plant ensures full utilization of heat to ensure that the desired pyrolysis temperature is reached in the lower pipes before reaching the outlet so as to produce high methane content in the pyrolysis gas.    DETAILED DESCRIPTION - The pyrolysis plant comprises an electrically heated heat chamber (1) through which longitudinal screw conveyors equipped with guide tubes (3, 4, 5) are mounted horizontally or slightly inclined, where outlets are provided at ends of the tubes for discharging the generated pyrolysis gas, transferring into a dust collection system and supplying the resulting degassed material residues to a waste container through the screw conveyors and vacuum hose (10). The guide tubes are arranged in groups. Elevation and sides of the tubes of each group are arranged at a calculated distance. A guide shaft (8) is connected to a highest guide tube through a chute (9) such that the temperature of the pyrolysis material gradually increases when passing through the guide tubes. A common feeder is provided in each guide tube via a manifold. The guide shaft comprises an evaporation device for production of methane from the pyrolysis gases in the form of purified and concentrated state under pressure. The screw conveyors of the guide tubes and the guide shafts are provided with continuously controlled geared motors.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a pyrolysis plant.    Heat chamber (1)    Guide tubes (3, 4, 5)    Guide shafts (8)    Chute (9)    Vacuum hose. (10)