2.3MW加氢精制加热炉富氧燃烧特性的CFD模拟OA

The tubular heating furnace is a key heating unit and a major energy consumer in refinery and chemical plants.Improving fuel combustion efficiency and the thermal efficiency of the heating furnace is of practical significance for energy conservation and emission reduction in these facilities.In this paper,the tubular heating furnace of aviation kerosene hydrofining unit is studied.The computational fluid dynamics(CFD)simulation method is adopted,and the standard k-ε turbulence model,component transport combustion model and P-1 radiation model are used.The temperature of the furnace,the average temperature of the surface of the furnace tube and the temperature distribution of the burner were investigated by changing the oxygen content of the combustion air.The results indicate that when the oxygen volume fraction changes in the range of 18.55%-26.00%,the oxygen volume fraction change has a significant impact on the temperature field and combustion efficiency in the furnace,and the existing radiation chamber,furnace tube and burner fully meet the needs of oxygen-rich combustion..