基于粉管煤粉浓度偏差的锅炉低氮燃烧优化试验研究  

Experimental study on low NO_x combustion optimization based on the deviation of pulverized coal concentration in powder tube

作　　者：王承亮 刘原一[2] 

机构地区：[1]华电国际技术服务中心,山东济南250014 [2]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《能源工程》2015年第5期50-53,共4页Energy Engineering

摘　　要：为探索燃贫煤锅炉低氮燃烧改造后的优化运行方式,达到降低氮氧化物,降低喷氨量和氨逃逸率,预防空预器发生积灰、堵塞的目的,从双进双出磨煤机粉管浓度和氮氧化物生成机理的角度进行了分析,提出了根据粉管浓度调节燃烧器周界风的运行优化建议。热态试验表明该方案可在低氮燃烧改造的基础上进一步降低约40 mg/m3的NOx排放,可为锅炉低氮燃烧优化提供参考。In order to explore the optimized combustion operation method of boiler burning lean coal after low nitrogen modification,further reduce nitrogen oxide,ammonia and ammonia escape rate,prevent ash deposition and blockage of air preheater,pulverized coal concentration in BBD ball mill powder tube and nitrogen oxide formation mechanism were studied. Then the optimized operation suggestions of adjusting surrounding air according to pulverized coal concentration deviation was proposed,and the hot test suggestted that it could reduce the NOxemission by about 40 mg / m3,which accumulated optimization experience for boiler low nitrogen combustion.

关 键 词：低氮 煤粉浓度 周界风 优化运行 

分 类 号：X511[环境科学与工程—环境工程]