Method for processing of combustible carbon- and/or hydrocarbon-containing products, including preparation of raw materials from derivative products and their consequent layer-by-layer treatment in reactor in the presence of catalytic agents, included into composition of nozzle, upon movement of raw material and nozzle from the top downward in the course of feeding of oxygen-containing agent and water vapor to reactor from bottom upward and including stages of raw material heating, pryrolysis of combustible components, carbonization, combustion, generation of solid residual that is discharged from process space of reactor, generation of vapor-gas mixture, cooling of vapor-gas mixture and its extraction from process spare of reactor and creation of rarefaction inside processing space of reactor DIFFERS BY THE FACT THAT wet small particles of solid fuel waste are injected into flow with their conversion to liquidized state upon feeding of oxygen-containing agent into reactor from the bottom upward and additional volume of oxygen-containing agent is injected into reactor as a part of main flow for further combustion of small particles of solid fuel waste that passed through pyrolysis and carbonization stages and conversion of their moisture into superheating steam and discharge is performed cyclically with maintenance of sealing of reactor processing space.