NOVELTY - Dry biomass fermenter with continuous feeding of biomass substrate and continuous removal of the fermented biomass substrate, comprises a gas-tight fermenter vessel (2) at its inlet (21), a first conveyor screw connected with a first gas-tight pusher (31), by means of which the biomass substrate can be introduced from above into the fermenter vessel and a second conveyor with a second gas-tight pusher (41), over which the fermented substrate at the bottom side fermenter vessel is removed. A paddle agitator in the middle of the fermenter vessel is mounted horizontally.    USE - Used as a dry biomass fermenter.    ADVANTAGE - The arrangement of the dry biomass fermenter allows a continuous flow of the biomass substrate at an approximately constant temperature and degree of oxygen, where the mechanical devices serving the movement of the substrate is simple, robust and compact, and in the event of damage, they should be replaced with little effort without taking off substrate from the tank. The movement of the substrate within the fermenter is evenly distributed over the entire operating period of time, thus the required peak value of the mechanical energy is much reduced, so that the investment costs and the fees due the cost of their own energy consumption is considerably reduced.    DETAILED DESCRIPTION - Dry biomass fermenter with continuous feeding of biomass substrate and continuous removal of the fermented biomass substrate, comprises a gas-tight fermenter vessel (2), at its inlet (21), a first conveyor screw connected with a first gas-tight pusher (31), by means of which the biomass substrate can be introduced from above into the fermenter vessel and a second conveyor with a second gas-tight pusher (41), over which the fermented substrate at the bottom side fermenter vessel is removed. The bottom of the fermenter vessel leans downward from the filling side towards the discharge side (22) and leans downward from the two adjacent sides to the center. A paddle agitator in the middle of the fermenter vessel is mounted horizontally. The second conveyor means is a conveying screw, which is arranged near the lowest point towards the bottom and is connected with a separator for separating the fermented biomass substrate into percolate and solids. An INDEPENDENT CLAIM is also included for producing percolate from biomass substrate, introducing the biomass substrate semi-continuously or continuously to the inlet of the fermenter vessel and inoculating with percolate and/or slurry or an another material, which contains microbes suitable for initiating the acidification process and then further moving continuously into the fermenter vessel and thus converting to percolate and removing the percolate on the discharge side of the fermenter container.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of the dry biomass fermenter.    Fermenter vessel (2)    Inlet (21)    Discharge side (22)    First gas-tight pusher (31)    Second gas-tight pusher (41)