Investigation of Gas Flow and Combustion in an Industrial Reheating Furnace Using the Regenerative Burner System

摘要

Several experimental investigations concur-withthe gas flow rid the combustion in a gas fired fumace has beencarried out in order to develop a high performance industrialreheating furnace using the regenerative bumer system; moreefficient, more compact, more controllable for the temperatureand temperature uniformity of the materials. In this paper, anew technique to obtain the temperature uniformity of thefumace and the influence of the height of the fumace to thefumace temperature profile are mainly presented. Combustionexperiment using a large scale experimental fumace with onepair of the regenerative burners and flow field measurementusing a 1/5 scale gas flow simulator have been included in the investigation.In order to obtain the uniform fumace temperature, combustionexperiments have been carried out with the divided fuel supplytechnique which is that some amount of the fuel is directlysupplied into the fumace. As a result of these investigation, thefumace temperature profile with small deviation has beenobtained after the way to supply the fuel has been optimized.The divided fuel supply technique reduces the deviation of thefumace temperature profile. It has been also recognized that theNOx emission has been reduced using this technique.