METHOD FOR CONTINUOUS PYROLYSIS OF SMALL-SIZED ORGANIC MATERIALS AND APPARATUS FOR IMPLEMENTATION THEREOF Russian patent published in 2022 - IPC C10B53/02 C10B47/44 

FIELD: heating.

SUBSTANCE: invention relates primarily to forestry and can be used in the process of recycling small-sized lumber and woodworking waste for producing charcoal. Invention relates to a method for continuous pyrolysis of small-sized organic materials, including forming a layer of material of a constant density, forming self-destructing plugs of the material at the input and output of the pyrolysis zone, drying, subjecting the material to pyrolysis, removing the resulting pyrolysis gas from the pyrolysis zone, and unloading the carbon product. The organic material from the supply hopper is supplied to the drying zone, wherein said material moves along a screw spiral conveyor; the organic material is dried by means of the uniform distribution of heat flows emitted from the fire box and the pyrolysis reactor; the evaporated free moisture is discharged into the atmosphere, and if the material enters the zone of oppositely directed coils of the screw spiral conveyor, a high density zone is formed continuously — a self-destructing preventing the entry of air into the reactor and the uncontrolled entry of pyrolysis gases into the drying zone, destroyed by the passage of the diffuser. The bound moisture in the reactor in the process of pyrolysis is transformed into water vapour, displaces the pyrolysis gases from the reaction zone, and participates in the reduction reaction with carbon, resulting in combustible gases. The process of pyrolysis of the material passes without access of oxygen, the thermal energy required for the process is formed while burning the resulting pyrolysis and combustible gases in the combustion zone, and the incandescent carbon product is moved by a screw spiral conveyor to the output of the reactor. If the material enters the zone of oppositely directed coils of the screw spiral conveyor, a high density zone is formed continuously — a self-destructing preventing the entry of air into the reactor and the uncontrolled entry of pyrolysis gases into the cooling zone. The plug is destroyed by passing the diffuser, and the carbon-containing material enters the cooling module, wherein the drying, pyrolysis, combustion, and cooling zones are located in a closed heat-insulated volume, and the material is constantly intensively mixed at all stages. The invention also relates to an apparatus for the implementation of the method.

EFFECT: reduced costs of producing a carbon-containing product by fully utilising the thermal energy continuously generated in the process of pyrolysis, without using additional heat sources, and organising the production process so as to prevent the coking of pyrolysis gases and the formation of production waste.

2 cl, 2 dwg