Device for the catalytic pressureless depolymerisation of hydrocarbon-containing input material, comprising: at least one oil supply (12, 12-1, 12-2, 12-3) with oil, at least two mixing reactors, whereby in a first mixing reactor input material can be mixed and pre-heated, and whereby the first mixing reactor is a mixing/comminution reactor and a fine comminution facility is integrated in the first mixing reactor with which [facility] the input material can be reduced in size from an edge length of 40 mm to < 4 mm, a fluid input from the first mixing reactor into the second mixing reactor, a separator, whereby one or more catalysts can be supplied to the separator, a fluid input from the second mixing reactor into the separator, a material feed, arranged below the minimum fill level, into the second mixing reactor and separator, a friction turbine for the heat input and the mechanical processing of the input material, a centrifuge - located downstream of the separator - for oil recovery and separation of solids, a combined heat and power unit for electricity and heat generation and for the clean combustion of low-value gases, an automatically controlled and coupled cooling and heating management system and an automatically controlled and coupled material dosing management system, whereby the second mixing reactor and the separator have a separately controllable vacuum, whereby the first mixing reactor and the second mixing reactor are equipped with at least one special agitator in order to prevent the adhesion of coke to heating and cooling coils and to the internal walls of the boilers, and whereby the separator, the at least one oil supply, the first mixing reactor and the second mixing reactor are equipped with an integrated active cooling and active heating system. at least one oil supply (12, 12-1, 12-2, 12-3) with oil, at least two mixing reactors, whereby in a first mixing reactor input material can be mixed and pre-heated, and whereby the first mixing reactor is a mixing/comminution reactor and a fine comminution facility is integrated in the first mixing reactor with which [facility] the input material can be reduced in size from an edge length of 40 mm to < 4 mm, a fluid input from the first mixing reactor into the second mixing reactor, a separator, whereby one or more catalysts can be supplied to the separator, a fluid input from the second mixing reactor into the separator, a material feed, arranged below the minimum fill level, into the second mixing reactor and separator, a friction turbine for the heat input and the mechanical processing of the input material, a centrifuge - located downstream of the separator - for oil recovery and separation of solids, a combined heat and power unit for electricity and heat generation and for the clean combustion of low-value gases, an automatically controlled and coupled cooling and heating management system and an automatically controlled and coupled material dosing management system, whereby the second mixing reactor and the separator have a separately controllable vacuum, whereby the first mixing reactor and the second mixing reactor are equipped with at least one special agitator in order to prevent the adhesion of coke to heating and cooling coils and to the internal walls of the boilers, and whereby the separator, the at least one oil supply, the first mixing reactor and the second mixing reactor are equipped with an integrated active cooling and active heating system.