广东电力2016，Vol.29Issue(11)：26-30,109,6.DOI:10.3969/j.issn.1007-290X.2016.11.006
660 MW发电机组对冲燃煤锅炉低氮燃烧改造及运行优化试验
Low NOx Combustion Transform for Hedging Coal-fired Boiler of 600 MW Generator Units and Operation Optimization Experiment
袁宏伟 1陈启召2
作者信息
- 1. 广东红海湾发电有限公司，广东 汕尾 516600
- 2. 华北电力大学，河北 保定 071003
- 折叠
摘要
Abstract
The original design for a 660 MW ultra-supercritical swirling hedging coal-fired boiler adopted the first generation OPCC typed swirling pulverized coal burner,and there were some problems in its operation process such as high NOx emis-sion,coking in burner region,burnout of some burners,and so on,therefore,low NOx combustion transform and operation optimization were conducted. After adding a layer of DC over-fire air and conducting transform on the main burner,param-eters of burners were optimized by adjusting over-fire air rate,total air volume and secondary air baffle opening. Results in-dicate that it is appropriate to keep oxygen content at 2.8% (corresponding to the total air volume of 2 1 000 t/h),NOx e-mission at the denitration entrance decreases to 240~260 mg/m3 from 350 mg/m3 before transform,carbon content in fly ash is lower than 1.5% and boiler efficiency promotes about 0.3%. In addition,there are no problems of burnout of burners and coking in burner region,and parameters of main steam and reheat steam both reach rated values and the units run well.关键词
旋流对冲燃煤锅炉/NOx 排放/飞灰含碳量/锅炉效率/旋流燃烧器/燃烧优化Key words
swirling hedging coal-fired boiler/NOx emission/carbon content in fly ash/boiler efficiency/swirling burner/combustion optimization分类
能源科技引用本文复制引用
袁宏伟,陈启召..660 MW发电机组对冲燃煤锅炉低氮燃烧改造及运行优化试验[J].广东电力,2016,29(11):26-30,109,6.
