NUMERICAL SIMULATION OF THE IMPACT OF PARTICULATE CO EMISSIONS UNDER COMBUSTION CONDITIONS
In order to explore the influence of combustion conditions on the CO generation behavior of sintered quasi-particles in the sintering process,the sintering process of different quasi-particles was studied by numerical simulation.Through FLUENT software,based on the porous media model,combined with the energy equation model,component transport equation model,reaction kinetics model of fuel combustion and pollutant emission,the source terms of each range model were defined and modified by custom function(UDF),and four kinds of iron ore sintered quasi-particles with different structures were established,namely S'type(bare type),S type(covered type),The models of the fuel combustion process of type C(outsourcing type)and type P(pellet type)illustrate the influence of various factors on the fuel combustion behavior and pollutant emission characteristics in sintered quasi-particles.The simulation results show that the CO emission law changes with the change of combustion conditions in the quasi-particle sintering process,and different reaction conditions have different effects on the combustion rate of coke in the quasi-granular.When the ambient temperature rises from 1 200 K to 1 400 K,the total CO emissions of quasi-particles decrease by about 2%.The higher ambient wind speed and oxygen concentration both increased the peak CO emission concentration of quasi-particles,and the degree of incomplete combustion of coke increased.
万方数据
维普
