THREE-ZONE ELECTRIC FURNACE WITH TUBULAR REACTOR Russian patent published in 2024 - IPC F27B5/06 

FIELD: electrical engineering; test equipment.

SUBSTANCE: invention relates to devices for thermal synthesis of materials and production of their experimental amounts, study of kinetics of destruction of substances and compounds by gas release in isothermal and non-isothermal modes, other high-temperature investigations and tests, heat treatment of articles and metals in a gaseous medium of a given composition and vacuum. Three-zone electric furnace contains detachable in horizontal plane housing with heating chamber from high-efficiency heat insulator and central channel, heat-insulating partitions divided into zones with symmetrically located electric heaters in the form of wire spirals on ceramic tubes, holes and support parts on end walls of electric furnace for installation of tubular reactor, in which the central channel is made in the form of a cylinder with a diameter forming an annular gap in combination with the outer diameter of the installed tubular reactor minimum required and sufficient size for optimal placement of heaters of upper and lower semi-sections of each heating zone in it and uniform heating of opposite surfaces of tubular reactor, in each heating zone there is an additional heating control thermocouple and a thermocouple for temperature control along the zone length, note here that furnace casing is arranged in outer jacket with clearance along the perimeter and perforated in jacket horizontal planes. Tubular reactor from refractory material contains sealed cooled gates for introducing samples, a manipulator, a temperature control probe along the axis of the reactor on one side and connection with systems for creating a controlled environment in it with the necessary control and measuring equipment—on the other, wherein the reactor is equipped with a tray of thin-walled heat-resistant material installed in the sections of the reactor to be heated along the center of the section of its inner space with the possibility of adjusting the position along the height of the section, and sealed gates for input of objects and for connection with systems of evacuation and filling of gases are equipped with pressure bushings adjacent to sealant, fast-acting sealing mechanisms, are removable with sealing along the adjacent outer surface of the tubular reactor by means of sealing mechanisms with the possibility of adjusting the degree of compression of the seal by changing and fixing the position of the pressure bushings.

EFFECT: expanded performances of the electric furnace with tubular reactor during heat treatment, thermal synthesis and other high-temperature works by increasing the temperature field uniformity over the section and controlling the temperature along the length of the working space of the electric furnace, increasing the reliability of sealing the tubular reactor with simultaneous reduction of heating-cooling time and sealing time of the tubular reactor, increasing the efficiency of the performed works.

2 cl, 4 dwg