Micro-organic dust combustion considering particles thermal resistance

作     者：Mohammadamin Soltaninejad Farzad Faraji Dizaji Hossein Beidaghy Dizaji Mehdi Bidabadi 

作者机构：School of Mechanical Engineering Department of Energy Conversion Combustion Research LaboratoryIran University of Science and Technology School of Engineering The University of Vermont Young Researchers and Elite Club Tabriz Branch Islamic Azad University 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2015年第22卷第7期

页      面：2833-2840页

核心收录：

学科分类：0810[工学-信息与通信工程] 0806[工学-冶金工程] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 081701[工学-化学工程] 0703[理学-化学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：粉尘燃烧 颗粒燃烧 热阻 化学反应速率 气体燃料 火焰温度 火焰处理 固体颗粒 

摘      要：Organic dust flames deal with a field of science in which many complicated phenomena like pyrolysis or devolatization of solid particles and combustion of volatile particles take place. One-dimensional flame propagation in cloud of fuel mixture is analyzed in which flame structure is divided into three zones. The first zone is preheat zone in which rate of the chemical reaction is small and transfer phenomena play significant role in temperature and mass distributions. In this model, it is assumed that particles pyrolyze first to yield a gaseous fuel mixture. The second zone is reaction zone where convection and vaporization rates of the particles are small. The third zone is convection zone where diffusive terms are negligible in comparison of other terms. Non-zero Biot number is used in order to study effect of particles thermal resistance on flame characteristics. Also, effect of particle size on combustion of micro organic dust is investigated. According to obtained results, it is understood that both flame temperature and burning velocity decrease with rise in the Biot number and particle size.