Computational model of furnace unit with various layouts of burners

Previously offered computational model of furnace unit with front-face layout of burners including active combustion and cooling zones with the former being additionally separated into ignition and burning areas at balanced heat-sink with conditionally constant flame temperature has found a use in development and adjustment of new fuel combustion systems as well as in reconstruction of existing ones. The paper considers model of furnace unit with bottom-ash removal and different schemes of wall layout of burners; the model is used for evaluation of thermal characteristics of flame at design and engineering works, adjustment and studies of boilers. The paper offers technique of model use. Submitted offers allow of enhancing safety of system introducing reactant and regulated inert flows into furnace, minimizing slagging at burning of solid slagging fuels, prolongating interrepair life of boiler equipment. Use of developed model and calculating technique for thermal characteristics of flame allows of setting effective performance operating and constructive parameters for system introducing reactant and regulated inert flows into furnace, additionally providing enhanced safety of boiler elements at conversion of units from one kind of fuel to another. Evaluation technique for thermal characteristics of flame using two-zone model of furnace cannot be regarded as complete with full coverage of possible technical variants of layout schemes and constructions of burners. With that, technique can be used as basic one at optimization of new types of furnaces and burners; it also allows of filling up computational base with experimental data that could be further used for safety engineering estimate of elements in such units.