(AT509319-A4)   NOVELTY - Device comprises a storage tank (1) for receiving the organic substrates, conveyor (4) for transferring the organic substrates into a loading device (7) for the batchwise filling of a hydrolyzer (10) with organic substrates. The hydrolyzer exhibits a relaxation device (12) on an output side with a valve-controlled pressure system, and a steam separator, which is arranged upstream to an expander tank. The conveyor has the screw conveyor with a hollow shaft, which is charged with hot steam from the steam separator, which is designed as a cyclone.    USE - The device is useful for the hydrolysis of solid, organic substrates, preferably of energy plants and agricultural waste.    ADVANTAGE - The device: utilizes optimized amount of energy and optimized operational conditions; and has a compact dimension. The method: increases the yield and quality of the substrate; and increases rate of substrate degradation, improves gas production and increases gas quality.    DETAILED DESCRIPTION - Device comprises a storage tank (1) for receiving the organic substrates, conveyor (4) for transferring the organic substrates into a loading device (7) for the batchwise filling of a hydrolyzer (10) with organic substrates. The hydrolyzer exhibits a relaxation device (12) on an output side with a valve-controlled pressure system, and a steam separator, which is arranged upstream to an expander tank. The conveyor has the screw conveyor with a hollow shaft, which is charged with hot steam from the steam separator, which is designed as a cyclone. The hollow shaft has steam outlet openings in the conveying area for directly admitting the organic substrates with hot steam. An INDEPENDENT CLAIM is also included for carrying out hydrolysis of solid, organic substrates, preferably of energy plants and agricultural waste, comprising thermal pressure hydrolysis (steam explosion) including depositing a partial quantity of the substrate by reducing the pressure of the hot steam, immediately after the discharge of the substrates treated in the thermal pressure hydrolysis, and heating the organic substrates used in the hydrolysis process, where the hot steam is directly injected into the conveyor, preferably a screw conveyor, with which the organic substrate is supplied to the thermal pressure hydrolysis.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of the device for the hydrolysis of solid, organic substrates.    Storage tank (1)    Conveyor (4)    Loading device (7)    Hydrolyzer (10)    Relaxation device (12)