1000MW超超临界锅炉NO_x生成特性的数值模拟研究  

Numerical Simulation Study on the Characteristics of NO_x Formation in a 1000 MW Ultra-supercritical Utility Boiler

作　　者：沈跃云[1] 高小涛[2] 章名耀[3] 

机构地区：[1]江苏经贸职业技术学院,江苏南京211168 [2]江苏省电力试验研究院有限公司,江苏南京211100 [3]东南大学能源与环境学院,江苏南京210096

出　　处：《锅炉技术》2011年第3期47-52,共6页Boiler Technology

摘　　要：新建的大型燃煤电站锅炉设计中均采用了低NOx燃烧系统,通过对炉内燃烧过程的合理组织来实现低NOx生成和排放。采用计算流体力学(CFD)模拟的方法,完成了对某电厂采用先进低NOx燃烧系统的1 000 MW超超临界锅炉的计算和分析。对通过数值模拟计算获得的炉膛温度场、CO浓度场、O2浓度场和NOx浓度场进行分析,证明锅炉主燃区的燃烧方式属于还原性气氛燃烧方式,因而能实现锅炉低NOx排放的预期目标。In newly built large-scale coal-fired power plants,the boilers are all designed and installed with low NOx combustion systems,by which the in-furnace combustion process is reasonably organized to achieve low NOx formation and emission.Computation and analysis of a 1 000 MW supercritical boiler equipped with advanced low NOx combustion system in a power plant were carried out by computational fluid dynamics（CFD） simulation approach.Through analysis on the obtained in-furnace fields of temperature and CO,O2 and NOx concentrations,it was demonstrated that the combustion mode of the furnace main combustion zone was reducing combustion,therefore achieved the goal of low NOx emission of the boiler.

关 键 词：超超临界锅炉 低NOX燃烧 NOX排放 CFD数值模拟 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]