链条锅炉复合燃烧炉内特性的数值模拟研究  

Numerical Simulation and Study of the In-furnace Compound Combustion Characteristics of a Chain Grate Boiler

作　　者：赛庆毅[1] 严浩文[1] 张忠孝[1] 陈宝明 

机构地区：[1]上海理工大学能源与动力工程学院,上海200090 [2]华之邦科技股份有限公司,上海200090

出　　处：《热能动力工程》2016年第9期63-68,134-135,共6页Journal of Engineering for Thermal Energy and Power

基　　金：国家科技支撑计划项目(2014BAA07B00)

摘　　要：本研究以某化工厂1台35t／h链条锅炉为物理模型，使用Fluent软件计算流体力学软件对链条锅炉采用复合燃烧技术改造前后炉内速度场和温度场特性进行数值模拟计算。计算结果表明：链条锅炉采用复合燃烧改造后，煤粉气流可以明显加强炉内的扰动，炉内温度分布更加均匀，火焰在炉膛内充满度更好，炉内烟气温度整体升高了约100-200K，高温区达到1500—2000K，提高了链条锅炉的热效率和锅炉出力。With a 35 t / h chain grate boiler in a chemical plant serving as the physical model,the CFD software Fluent was adopted to perform a numerical simulation and calculation of the characteristics of the speed field and temperature field in the furnace of a chain grate boiler before and after the reconstruction by using the compound combustion technology. The calculation results show that after the reconstruction by using the compound combustion technology,the pulverized coal and air flow in the chain grate boiler can obviously enhance the disturbance in the furnace,distribution of the temperature in the furnace will be more uniform,the filling degree of the flame in the furnace will be better,the temperature of the flue gases in the furnace will increase by about 100 to 200 K as a whole and attain1 500 to 2 000 K in the high temperature zones,thus enhancing the thermal efficiency and capacity of the chain grate boiler.

关 键 词：链条锅炉 复合燃烧 速度场 温度场 数值模拟 

分 类 号：TK229.61[动力工程及工程热物理—动力机械及工程]