链条锅炉复合燃烧及其优化的数值模拟研究  

Research of numerical simulation and optimization of compound chain boiler combustion

作　　者：严浩文[1] 陈宝明 赛庆毅[1] 张忠孝[1] 荣燕燕 徐传航 

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：《能源工程》2016年第2期69-74,79,共7页Energy Engineering

基　　金：国家科技支撑计划项目(2014BAA07B00)

摘　　要：以某化工厂一台35 t/h链条锅炉为物理模型,借助Fluent软件对链条锅炉采用复合燃烧技术改造前后炉内燃烧特性以及优化送粉速度进行数值模拟计算。计算结果表明：链条锅炉采用复合燃烧改造后,炉内温度分布更加均匀,炉内高温区达到1500～2000 K,整体烟气平均温度升高了100～200 K;随着送粉速度的提高,炉内高温区呈现从左到右的偏斜趋势,且后拱上方的回流区逐渐变小,当送粉速度为20 m/s时,炉内温度场和速度场最为合理。Taking a 35 t / h chain furnace in an chemical plant as physical model,the combustion characteristic and the powder feeding velocity of both traditional chain-grate and compound combustion chain-grate were studied using Fluent.The results showed that,after using compound combustion,the temperature distribution was more even; the temperature in the high temperature zone was about 1500 ～ 2000 K,the fume temperature was 100 ～ 200 K higher; With the improvement of powder feeding velocity,the high temperature presented the trend deviation from left to right,and at the top of the arch,the reflow area became smaller. When the powder feeding velocity was 20 m / s,the temperature and velocity field were most reasonable.

关 键 词：链条锅炉 复合燃烧 温度场 速度场 数值模拟 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]