Numerical simulation of regenerative ladle preheating assisted by oxygen-enriched combustion
Ladle baking,a pivotal component within the steel production process,exerts a profound influence on the overall energy consumption and emission profiles of the entire manufacturing cycle.Therefore,in order to investi-gate the effect of oxygen-enriched combustion on regenerative ladle baking process,a three-dimensional model of the ladle was firstly established with the help of SpaceClaim software.Numerical simulation was used to establish a multi-field coupled mathematical model of combustion,flow and heat transfer based on the standard k-e turbulence model,species transport model,and DO radiation model.Based on the established model,the finite element AN-SYS Fluent 2024 R1 was used to numerically simulate the combustion field of oxygen at volume fractions of 21％,24％,27％,30％,and 99％inside the ladle,and analyze the distribution of flow field,temperature field,and NOx in ladle under different oxygen concentrations.The analysis results show that under the numerical simulation condi-tions,oxygen-enrichment combustion can not only increase the flame temperature of the ladle heating,but also has the characteristics of high combustion efficiency,fast heating speed and saving gas.Therefore,the combination of oxygen-enriched combustion and regenerative baking technology is studied in order to provide reference for the im-provement of ladle baking technology.
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