SUSPENSION FUEL COMBUSTION BOILER Russian patent published in 2025 - IPC F22B31/00 F23C6/04 

FIELD: combustion apparatus.

SUBSTANCE: technical solution relates to devices for combustion of suspension fuels, including coal-water fuel (CWF), in various boiler plants of industrial heat power engineering, housing and communal services and other heat generating systems. Boiler for combustion of suspension fuels contains heating chamber of heat carrier of rectangular cross section, a primary fuel combustion chamber and a secondary fuel combustion chamber in the form of a cylinder or a polyhedral prism with more than three sides, connected by a channel and equipped with nozzles and blow nozzles, afterburner of fuel combustion products, slag and ash catcher. Secondary fuel combustion chamber is located inside the lower part of the fuel afterburning chamber, which passes into the heat carrier heating chamber, wherein in the primary and secondary fuel combustion chambers injectors and blow nozzles are installed, respectively, on opposite walls of the chambers opposite each other at the same level and such that central axes of symmetry of nozzles are inclined upwards at angle of 0 to 15 degrees relative to horizontal plane of section of chamber and make angle of 10-40 degrees with vertical walls of chamber in projection on horizontal plane. Distance between adjacent nozzles is from 1.1 to 1.5 diameters of fuel spray. Blasting nozzles are directed tangentially to the fuel combustion chamber wall.

EFFECT: higher quality of fuel combustion.

4 cl, 2 dwg