发电厂多工况下四角切向燃烧锅炉数值模拟  

Numerical Simulation of Multiple Loading Cases in the Tangentially Fired Boiler

作　　者：王云刚 邓中乙[2] 谢红[2] 

机构地区：[1]安徽皖能铜陵发电厂,安徽铜陵244000 [2]安徽省电力科学研究院,安徽合肥230000

出　　处：《安徽电力》2011年第1期42-45,共4页Anhui Electric Power

摘　　要：借助FLUENT软件平台,在5种不同煤种、4种不同配风方式下,对发电厂220 t/h四角切向燃烧煤粉锅炉炉内的流动、传热及燃烧进行了数值模拟。模拟结果表明:炉内最高温度出现在燃烧器区域,随着炉膛高度的增加,温度逐渐降低。不同热值的煤种在燃烧器喷口截面燃烧所得到的平均温度不同,不同二次风配风方式和不同的一次风率都对温度场有着较大的影响。Using CFD software FLUENT,under five different kinds of coal four different air distribution modes,an Eulerian/Lagrangian approach was employed to investigate numerically the flow field,heat transfer and combustion process in a tangentially fired furnace of 220t/h pulverized coal boiler.The cases included five different kinds of coal.The simulation results show that temperature drops with the increase of furnace height,and the highest temperature appears in the area of the burners. The different temperatures of jet were found for the difference calorific value coal.The difference of secondary air and primary air have great impact on distribute of the temperature.

关 键 词：发电厂 煤粉 切向燃烧锅炉 数值模拟 数值伪扩散 

分 类 号：TM621.2[电气工程—电力系统及自动化]