PNEUMATIC TUBE PLANT FOR THE FINE-GRAINED MATERIAL THERMAL TREATMENT Russian patent published in 2019 - IPC F27B15/00 

FIELD: heating.

SUBSTANCE: invention relates to the fine-grained materials heat treatment plant in the chemical and other industries, in particular for the salts decomposition, waste incineration, and similar processes. Plant includes a furnace with a tangentially mounted burner and a conical protrusion in the working chamber, connected to the external vertical pneumatic tube and the internal vertical pneumatic tube along its axis with a belt helix to the full height, recirculation chambers along the external pneumatic tube height formed by inserts made of truncated cones, by the large bases adjoining to the external pneumatic tube, and vertical cylinders under the cones along the pneumatic tube axis, in the cones lower parts and in the cylinders upper and lower parts provided with alternating rows of protrusions and depressions, forming visors above the holes above the cylinders and the holes at the cylinders bottom that are offset in plane relative to the visors, pneumatic tubes are made of conical shape and are provided with branches, and the internal pneumatic tube lower branch pipe is placed along the furnace working chamber axis with the pipe outlet location in front of the conical protrusion top.

EFFECT: enabling reduction in the fuel consumption due to the waste gases heat recovery in the countercurrent mode and the heat transfer intensification.

1 cl, 2 dwg