Impact of Air Excess Ratio and Preheating on Temperature Distribution in Vertical Cylindrical Tube Furnace

Furnace temperature is one of the most important industrial indicators in refinery cavities. This paper makes a simulation of temperature distribution inside a vertical cylindrical tube furnace called F101 cavity, which is on running in Harbin Petrochemical Company, with computational fluid dynamics method. Computational simulation results show a good accordance with the monitor data in the field, which proved the reliability of the selected models. The cavity temperature decreases with air excess ratio α increasing which is best-distributed when α gets a value of 1.05. The appropriate increasing of air preheating can achieve temperature better-distributed and the most reasonable distribution will appear at the temperature of 500K. The research achievements can provide theoretical guidance for optimizing operating parameters in production processing and improving operating performances.