Heat Transfer and Energy Analysis of a Pusher Type Reheating Furnace Using Oxygen Enhanced Air for Combustion

作     者：Hamzeh Jafar Karimi Mohammad Hassan Saidi 

作者机构：Science and Research CampusIslamic Azad University School of Mechanical EngineeringSharif University of Technology 

出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报（英文版）)

年 卷 期：2010年第17卷第4期

页      面：12-17页

核心收录：

学科分类：080701[工学-工程热物理] 0806[工学-冶金工程] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：oxygen enhanced combustion reheating furnace energy consumption 

摘      要：Oxy-fuel firing is more energy efficient and environmental friendly than conventional air-fuel firing and its application to reheating furnaces has begun since 1990s. A computational method was presented to predict the steady heat transfer to the billets and temperature distribution in a continuous pusher type reheating furnace in which combustion air was enhanced by oxygen. Radiation heat flux calculated from the radiation heat exchange within the furnace was modeled using the FVM considering the effects of furnace walls and billets. Energy consumption per ton of steel, production rate and thermal efficiency of furnace, and trend of NOx emission in various levels of oxygen enrichment were investigated by comparing with baseline furnace （21% of O2 in air）. The results showed that the best range of oxygen enrichments was between 21% and 45% by volume, as the higher slope of flame temperature and production increase occur in this range. The reduction of energy consumption can be obtained up to 18% per ton of steel for oxygen enrichment of 60 % by volume.