不同煤种高温燃烧时NO_x排放特性的沿程分析  

Study on the Formation of NO_x Along Boiler with Different Coal in HT Combustion

作　　者：王正华[1] 周昊[1] 池作和[1] 蒋啸[1] 岑可法[1] 

机构地区：[1]浙江大学

出　　处：《电站系统工程》2003年第2期19-20,23,共3页Power System Engineering

基　　金：国家重点基础研究专项经费资助(G1999022204)

摘　　要：在一维沉降炉上进行了煤粉高温燃烧时NOx排放特性的沿程分析,系统考察了煤粉高温燃烧时NOx排放的影响因素。试验表明,NOx生成和径向分布与炉内温度、煤粉细度、给粉量、煤种、二次风温、一二次风比值及过量空气系数等有密切关系。通过NOx排放的沿程分析研究,对采取低NOx燃烧技术的电站锅炉选取合适的运行参数有一定的指导意义。The study of NOx emission of coal powder along boiler in high temperature combustion is carried out in one-dimension subsiding furnace. The factors influencing formation and distributing of NOx are discussed. Experiments show that the amount and the distributing of NOx emanation depend intimately on the furnace temperature, the quantity of coal powder, coal category, the temperature of the secondary air, the ratio of primary air and secondary air, excess air factor etc. There is some action on selecting appropriate parameters of some boiler with NOx control technology.

关 键 词：煤种 高温燃烧 锅炉 氮氧化物排放特性 电站 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程] X773[环境科学与工程—环境工程]