METHOD AND DEVICE FOR RECYCLING WORN-OUT TIRES IN FAST PYROLYSIS REACTOR IN MEDIUM OF MELTED THERMAL FLUID WITH CONTROLLED TEMPERATURE Russian patent published in 2025 - IPC C10B49/14 C10B53/07 F23G5/27 F23G7/12 

FIELD: performing operations.

SUBSTANCE: invention relates to a method of recycling worn-out tires in a fast pyrolysis reactor in a molten thermal fluid medium. Method is characterized by the fact that melted thermo-fluid with controlled temperature is used in fast pyrolysis reactor, in particular, a composite medium of a thermal fluid, consisting of two substances in the form of lead Pb and sodium hydroxide NaOH, also controls the temperature of the melted thermal fluid medium in range from 330 to 1,000 °C. Also, the reactor uses a fluidized bed of several tiers of steel balls, having both mobility in the reaction part of the melted thermal fluid of the reactor and chemical neutrality to lead Pb and sodium hydroxide NaOH, high density of steel balls tier for forced immersion directly into lead thermal fluid of floating large ash particles and wastes for separation of only reacted ash particles with size less than passage between balls of fluidized bed, also used is lead Pb, which is inert to substances of the listed recyclable wastes and has a low melting point, which is required for low-temperature pyrolysis with temperature of 330 °C and higher, and due to high density Pb separates and displaces metals and compounds with lower density, molten Pb fluid and allows bubbling of sublimated volatile pyrolysis gases together with introduced recycling wastes, sodium hydroxide NaOH is also used, having a melting point lower than that of lead Pb, which creates an upper slag film over the lead and prevents the release of lead vapours, additionally NaOH covers from above a layer of fluidized bed of steel balls, thereby separating floating ash-slag mixture from fluidized bed, layer of NaOH additionally bubbling in thermal fluid sublimated pyrolysis gases and solid ash-slag particles, binds pollutants into insoluble compounds, which enter into reaction with NaOH, also implementing a continuous flow-through cycle of operation with continuous supply of raw material in the form of recycled hydrocarbon-containing wastes, and the level of thermal fluid in the reactor retort is controlled by a movable piston, the process is also carried out in a closed sealed system without access of oxygen and air, before the start of operation, the gas separation layer is purged with an inert gas, thereby providing pyrolysis and excluding the oxidation of pyrolysis products, reducing energy costs for treating ballast nitrogen, also performing evacuation of pyrolysis gases from the reaction part of the reactor by excess pressure of pyrolysis gases sublimated from the solid phase of the recycled wastes, process is also controlled by means of automation according to readings of instrumentation, in emergency mode, gas separation layer is blown with inert gas under pressure and explosive valves are used in upper cover of reactor, possibility and sequence of multiple loading and unloading of thermal fluid, as well as salvo discharge of thermal fluid in case of emergency, heat recovery of exhaust flue gases for heating of blast air is performed using heat exchanger with low aerodynamic resistance. Invention also relates to a device.

EFFECT: improvement of environmental situation, implementation of continuous flow fast pyrolysis process, reduction of losses for heat energy transfer to recycled wastes, shorter time for thermal destruction of wastes, implementation of forced bubbling of floating recyclable wastes directly in a layer of molten thermal fluid.

3 cl, 3 dwg, 1 ex