INDUSTRIAL COMPLEX FOR THE PRODUCTION OF CHARCOAL WITHOUT WASTE METHOD OF LOW-TEMPERATURE PYROLYSIS FROM BRIQUETTE WOOD WASTE Russian patent published in 2019 - IPC C10L5/44 C10B47/28 C10B49/02 B09B3/00 

FIELD: technological processes.

SUBSTANCE: invention describes an industrial complex for the production of charcoal from briquetted wood waste, including a heat carrier preparation site, a ground wood waste preparation site, a wood drying site equipped with a drying device, briquetting site, low-temperature pyrolysis site, characterized in that the site for preparing the gaseous heat carrier is made in the form of a complex heat generator equipped with a combustion chamber for receiving flue gases, with a combustion unit for recycled pyrolysis gases, as well as an input unit in the generated coolant for at least part of the gas-vapor mixture with low oxygen content and high content of steam returned from the drying area; site for the preparation of shredded wood waste, located in front of the drying area, includes at least one receiving hopper of raw materials, crushing and grinding equipment, at least one storage hopper, located in front of the inlet channel of the drying unit and equipped with a feeder; area of wood drying is equipped with a drying device operating in co-circulation in suspension of the vapor-gas coolant and shredded wood within the working area, made in the form of a looped channel, while the drying device includes a node for introducing wood particles, a node for introducing a coolant with low oxygen content, node output of wood particles vapor-gas flow, made with the possibility of full output of particles, as well as their full or partial return to an additional drying cycle, and the output node is designed to prevent the penetration of oxygen into the working area of the drying device; section for separating the mixed stream coming out of the drying device into a vapor-gas mixture and shredded wood is made with the possibility of recovering at least part of the vapor-gas mixture in the complex heat generator of the section for the preparation of a gaseous heat carrier and includes at least one cyclone and one receiving bin, located downstream of the drying device, moreover, the pipeline in front of the cyclone is equipped with a device for controlling the target moisture content of wood particles by condensing moisture from the vapor-gas stream; the separation section also includes a chimney for dispersing at least a part of the drying exhaust gases, equipped with control valves and / or dampers, moreover, their positioning provides such a level of pressure inside the complex, which suppresses the leakage of oxygen into the system, but at the same time allows at least part of the exhaust gases to leave the system; the briquetting section is equipped with at least one press, preferably of an extrusion type; section of low-temperature pyrolysis, operating in a heat-stabilized mode, is equipped with at least two devices for producing charcoal, each of which includes a thermally insulated casing with a system of gas ducts, moreover, the working area of each device is made in the form of a looped channel, equipped with a gas-permeable recuperator installed inside the looped channel, a heat-resistant fan and a rotary gate, system of gas ducts is made with the possibility of transporting pyrolysis gases to the complex heat generator of the site for preparing the gaseous coolant, and also the section of pyrolysis is equipped with removable devices for loading and unloading briquettes.

EFFECT: technical result achieved with the use of the complex is that the problem of efficient molding of strong briquettes is solved, which in the process of further fast low-temperature pyrolysis are not only not subject to destruction, but significantly increase their mechanical strength, maintaining the geometry of the briquette from the moment of its receipt until burning at the consumer; the resulting briquettes are distinguished by high consumer properties: environmental friendliness, high calorific value, and from the point of view of storage and transportation, hydrophobicity and high mechanical strength.

10 cl, 1 dwg