Inventions can be used in the field of industrial, processing of combustible carbon-and/or hydrocarbon-containing products. Method for processing of carbon-and/or hydrocarbon-containing products includes layer-by-layer of raw materials in reactor in presence of catalyst. Raw materials pass through derivative product heating area (9), pyrolysis area (8), carbonization area (7), combustion area, (6) with conversion of solid, residual that is discharged from area for discharging of solid residuals (2) with discharging gate (3) from process area of reactor cyclically from top downward in reactor with maintaining of its leaktightness. Leak-proof process chamber (1) of reactor contains area for feeding of wet small particles of solid fuel waste, their pyrolysis and carbonization (14), connected to areas for feeding (4) and heating (5) of oxygen-containing agent. Channel for feeding of oxygen-containing agent (15) is connected to metering hopper of wet small particles of solid fuel wastes (16), which are used for formation of fluidized flow. Additional volume of oxygen-containing agent is injected into reactor as a part of main flow that is necessary for further combustion of small particles of solid fuel waste that passed through pyrolysis area (8) and carbonization area (7) and conversion of their moisture into superheating steam. Inventions allow complete utilization, of small fractions of derivative products, ensure generation of gas with high calorific capacity and increase output and quality of finished products and discharge is performed cyclically with maintenance of sealing of reactor processing space. 2 and 4 of depending claims, 1 dy; 2 table 1 ref.