三次风细煤粉再燃脱硝技术的可行性  

Feasibility Study on the Reburning with Fine Coal Particles Based on Tertiary Air Retrofit in Pulverized Coal Fired Boilers

作　　者：樊融[1] 张海[1] 吕俊复[1] 李建锋[1] 岳光溪[1] 徐秀清[1] 

机构地区：[1]清华大学热能工程系

出　　处：《电站系统工程》2007年第5期34-36,40,共4页Power System Engineering

基　　金：国家重点基础研究发展规划项目(G2000026309)

摘　　要：对于我国为数众多带中储式制粉系统的燃煤锅炉,如何将三次风系统进行细煤粉再燃技术改造以降低NOx的排放是一个重要课题。给出了多种实现三次风细粉再燃脱硝的措施和方法,进行了细致的技术分析,并讨论了再燃脱硝技术开发时必须注意的若干问题。分析结果表明,将三次风系统进行综合改造后形成的三次风再燃脱硝技术,在燃用高挥发分烟煤和褐煤时是可行的。Bin system is popularly used in coal preparation for power stations in China. It is important to retrofit the tertiary air system to achieve the low NOx emission. A few methods were proposed to retrofitting the tertiary air into a rebuming system with fine pulverized coal particles. Economic and technical analyses were conducted. Some discussion also was given on the issues in implementation. As a conclusion, the rebuming with fine coal particles retrofitted from the tertiary air system is feasible when high volatile content bituminous or lignite coals are burnt.

关 键 词：煤粉锅炉 三次风 细煤粉 再燃 脱硝 

分 类 号：X701.7[环境科学与工程—环境工程]