NOVELTY - The process for the hydrothermal carbonization of biomass e.g. living, dead and/or decomposed organisms, comprises converting biomass with water and a catalyst in a pressure vessel (49') by temperature and/or pressure elevation into substances such as coal, oil and/or like. To the pressure vessel, which is constructed as a pipe having a controllable inlet orifice and -outlet orifice, the biomass, water and/or the catalyst is continuously fed via the inlet orifice by the application of pressure from a piston and the temperature and/or pressure conditions in the pressure vessel are controlled.    USE - Process for the hydrothermal carbonization of biomass (claimed). Uses include but are not limited to living, dead and/or decomposed organisms, wood waste and/or -residue, straw, grass, dung, leaves, sludge and/or organic domestic waste.    ADVANTAGE - The process effectively improves the hydrothermal carbonization of biomass with respect to the time period of the conversion process and also with respect to the type and manner of the process procedure with low technical and personnel expenditure.    DETAILED DESCRIPTION - The process for the hydrothermal carbonization of biomass e.g. living, dead and/or decomposed organisms, comprises converting biomass with water and a catalyst in a pressure vessel (49') by temperature and/or pressure elevation into substances such as coal, oil and/or like. To the pressure vessel, which is constructed as a pipe having a controllable inlet orifice and -outlet orifice, the biomass, water and/or the catalyst is continuously fed via the inlet orifice by the application of pressure from a piston, the temperature and/or pressure conditions in the pressure vessel are controlled in such a manner that the charge material fed to the pressure vessel is transported in the pipe in a defined manner, where the biomass, water and the catalyst react with one another and a reaction product of the charge material is taken off via the outlet orifice. The feeding of biomass, water and/or catalyst takes place via a piston press device (50), an eccentric screw pump or a lock chamber, which is arranged before the controllable inlet orifice of the pressure vessel. The lock chamber has a controllable inlet and outlet, and is connectable on the part of the inlet with a storage tank for charge materials and on the part of the outlet with the inlet orifice of the vessel. The piston press mechanism has a chamber (51) with an inlet (52), a controllable outlet (53) and a piston movable in the chamber for pressing materials in the chamber. The transport of filling material present in the vessel is carried out by a controllable conveyer screw in the piping of the vessel. The conveyer screw is extended over the entire length of the piping of the vessel and is adjusted concisely to the interior cross section of the piping of the vessel. The piping of the vessel is arranged in a container partly fillable with oil. The vessel is heated and the heating is controlled via the temperature of the oil in the container. A cornstarch such as grain and/or potato starch is used for the filling material from biomass, water and catalyst. The removal of the reaction product of the filling material takes place by a filter arranged after the controllable outlet orifice of the vessel. The reaction product is pressed before and/or after the removal process. The conveying volume of the conveyer system, the temperature and/or pressure ratio and the removal of the reaction product are controllable via a controlling device. The temperature in the vessel is 180-200 degrees C over the temporal duration of the transport of the filling material. An INDEPENDENT CLAIM is included for a device for the hydrothermal carbonization of biomass.    DESCRIPTION OF DRAWING(S) - The diagram shows a device for the hydrothermal carbonization of biomass.    Pressure vessel (49')    Piston press device (50)    Chamber (51)    Inlet (52)    Controllable outlet. (53)