1.5MW循环流化床锅炉内煤与垃圾混烧的烟气特性  

Properties of flue gas from mixed incineration of municipal solid waste and coal in a 1.5 MW circulating fluidized bed boiler

作　　者：朱廷钰[1] 叶猛[1] 荆鹏飞[1] 徐文青[1] 肖云汉[2] 

机构地区：[1]中国科学院过程工程研究所,湿法冶金清洁生产技术国家工程实验室,北京100190 [2]中国科学院工程热物理研究所,北京100080

出　　处：《化工学报》2010年第9期2468-2473,共6页CIESC Journal

基　　金：“十一五”国家科技支撑计划课题(2008BAC32B05)~~

摘　　要：通过对1.5MW循环流化床锅炉内煤与垃圾混烧产生的烟气中的CO、HCl、SO2、NOx、H2O、二口恶英等成分进行在线监测,发现原煤燃烧排放的CO浓度要高于添加垃圾后排放的CO浓度,随垃圾加入比例的增大,不完全燃烧份额增加,相应的CO排放值逐渐提高。由于原煤含硫量远高于垃圾含硫量,因此随着垃圾加入比例的增大,烟气中的SO2浓度有所降低。烟气中HCl浓度随着垃圾加入比例的增大几乎呈直线增加。而烟气中NOx浓度则呈现出含量下降的趋势,这证明循环流化床锅炉可以抑制NOx总量的生成,但N2O的排放浓度会有所增加。此外,随着垃圾加入比例的增大,烟气中的H2O和二口恶英含量也有所增加,成为该工艺实际应用过程中需要考虑的问题。The objective of this work is to study the mixed incineration of municipal solid waste（MSW）and Chinese low-grade coal in a 1.5 MW circulating fluidized bed boiler（CFB）presenting experimental results regarding some composition emissions involving CO,HCl,SO2,NOx,H2O and dioxins.The flue gas online monitor is used to analyze the composition and concentration to evaluate the emissions characteristics.The experimental results show that CO content in flue gas increases with the increasing in proportion of Wwaste/Wcoal＋waste.While with the increasing in proportion of Wwaste/Wcoal＋waste,the increase of HCl content is nearly linear,and the concentration of SO2 decreased.Test results have also confirmed that the properties of CFB incineration lead to considerable reduction of NOx,but the significant increase of N2O emission.Furthermore,the concentration of H2O and dioxins increase with the increasing in proportion of Wwaste/Wcoal＋waste,so removal of dioxins must be considered in the practical application of this technology.

关 键 词：循环流化床 煤 垃圾 烟气 

分 类 号：TQ038[化学工程]