Solid fuel combustion processes modelling in the furnace in terms of the boiler K-50-14-250

• Published in: Journal of physics. Conference series Vol. 1683; no. 4; pp. 42050 - 42060
• Main Authors: Prokhorov, V B, Fomenko, M V, Fomenko, N E
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.12.2020
• Subjects: Aerodynamics; Boiler furnaces; Boiler houses; CAD; Computational fluid dynamics; Computational grids; Computer aided design; Exhaust gases; Field tests; Finite element method; Flammability; Flue gas; Fuel combustion; Gas temperature; Heating; Mathematical models; Model testing; Nitrogen oxides; Nozzles; Numerical models; Physics; Simulation; Slagging; Solid fuels
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1683/4/042050

The paper presents the numerical simulation results of furnace of the boiler K-50-14-250 for three operation modes with computational fluid dynamics software ANSYS Fluent. The boiler is located at industrial heating boiler house in Tashtagol town. The selection of models for the boiler furnace operation simulation is given. A study of simulation results independence on the mesh size was conducted, based on which a computational mesh was selected for further research. The numerical simulation results of three modes furnace operation were compared with the results of the field tests (flue gas temperature at the furnace outlet, combustible losses, heat absorption of the furnace heating surfaces, the nitrogen oxides concentration in the exhaust gases at excess air ratio α = 1.4). Besides, a slagging process numerical simulation of the furnace waterwalls performed. The numerical simulation results of the near nominal load furnace operation are compared with the results of physical isothermal modelling by matching the streamlines from the burners and air nozzles of the boiler. The paper summary is the verification of numerical models of the solid fuel combustion in the furnace, in terms of the boiler K-50-14-250.