文献类型：期刊文献

中文题名：煤粉锅炉掺烧污泥后的数值模拟

英文题名：Simulation Investigation on Co-combustion of Sludge and Coal in Boiler

作者：朱志斌[1];夏翔鸣[2];徐宏[1];侯峰[1];黄冬良[2]

机构：[1]华东理工大学机械与动力工程学院,上海200237;[2]中国石化扬子石油化工有限公司,江苏南京210048

年份：2013

卷号：44

期号：2

起止页码：33

中文期刊名：锅炉技术

外文期刊名：Boiler Technology

收录：北大核心:【北大核心2011】；

语种：中文

中文关键词：数值模拟;煤粉燃烧;污泥掺烧;温度场;NOx排放

外文关键词：numerical simulation;pulverized coal combustion;sludge co-combustion; temperature;NOxproduction

摘要：采用数值模拟研究了不同的污泥掺烧量对煤粉锅炉的影响。结果表明,锅炉炉膛掺烧污泥后会造成燃烧器区域煤粉燃烧不充分,生成大量的CO和H2,CO和H2接着在炉膛的上部区域燃烧,使炉膛的最高温度降低,最高温度所在的区域有所提高,炉膛出口处烟气温度也随之改变;由于CO和H2的大量存在,形成了强烈的还原性气氛,会抑制NOx的生成。因此,应控制污泥的掺烧量,建议污泥的掺烧量不超过4t/h。
In this paper,the influence of different sludge co-combustion amounts on the combustion behavior of pulverized coal-fired boiler was analyzed by numerical simulation.The simulation results show that pulverized coal combustion is not complete at burner zone of furnace due to co-combustion with sludge,which makes a large amount of CO and H2appeared and the CO and H2gas's complete burning on upper furnace area decreases the maximum temperature of the furnace and changes the outlet gas temperature.On the other hand,a large amount of CO and H2 make a contribution to building reducing atmosphere which can inhibit NOxproduction.It is suggested that the maximum adding amount of sludge should be controlled less than 4t/h.