文献类型：期刊文献

英文题名：Numerical Study of the Effects of Reflector on Performances of a MILD Furnace with Forward Flow Configuration

作者：Liu, Bo[1]; Wang, Yuan-Hua[1]; Xu, Hong[1]

机构：[1] State-Key Laboratory of Chemical Engineering, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2015

卷号：75

起止页码：3042

外文期刊名：Energy Procedia

收录：EI(收录号：20154701569279)

语种：英文

外文关键词：Gas emissions - Flues - Combustion - Furnaces - Residence time distribution - Reflection

摘要：Two dimensional numerical simulations were conducted to study the performances of a mild furnace with forward flow configuration. A reflector for application in the furnace was proposed to reduce the CO and H2 emissions due to incomplete burnout of gas fuel, while maintain the low level of NO emission. Effects of the reflector diameter (D) on the performances of the furnace were analyzed. The predicted data in the furnace without reflector are in good agreement with the measurements. The results indicated that influence of reflector on flow field in the furnace upstream is insignificant because it is mainly controlled by the burner exit jet momentum, however the reflector prolongs the residence time of flue gas in the chimney and the combustion near the reflector is intensified. The temperature distributions in the furnace are very uniform and the maximum temperatures of all conditions are below 1500 K. The CO and H2 emissions in flue gas decrease dramatically with the increase of D and the NO emission is below 4 ppm regardless of D. ? 2015 The Authors. Published by Elsevier Ltd.