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燃煤锅炉燃烧过程与NOx排放的模型与数值计算
引用本文:徐明厚,郑楚光,J.L.T.AZEVEDO,M.G.CARVALHO.燃煤锅炉燃烧过程与NOx排放的模型与数值计算[J].工程热物理学报,2001,22(2):249-252.
作者姓名:徐明厚  郑楚光  J.L.T.AZEVEDO  M.G.CARVALHO
作者单位:Huazhong University of Science and Technology,,Instituto Superior Tecnico,Av. Rovisco Pais, Lisboa,
基金项目:欧盟资助项目,华中理工大学校科研和教改项目,BRPR-CT96-0198,J121801,,
摘    要:本文以一台前墙布置有24只旋流燃烧器的350 MW燃煤电站锅炉为研究对象,对锅炉在100%、95%、85%、70%和50%额定负荷下的流动、燃烧和NOx排放进行了全炉膛数值模拟。模拟结果与锅炉运行和实测数据进行了全面比较并发现,除50%负荷外,其余工况两者符合情况良好。文中提出并采用了NOx模拟中相关的模型参数;对炉内空气量、炉温与NOx生成关系的计算结果表明, NOx的最终排放对温度的敏感性更强。

关 键 词:煤燃烧  NOx排放  数值模拟
文章编号:0253-231X(2001)02-0249-04
修稿时间:2000年12月7日

NUMERICAL SIMULATION OF THE PULVERISED COAL COMBUSTION AND NOx EMISSION IN A FRONT-WALL FIRED BOILER
XU Ming-Hou,ZHENG Chu-guang,J.L.T.AZEVEDO,M.G.CARVALHO.NUMERICAL SIMULATION OF THE PULVERISED COAL COMBUSTION AND NOx EMISSION IN A FRONT-WALL FIRED BOILER[J].Journal of Engineering Thermophysics,2001,22(2):249-252.
Authors:XU Ming-Hou  ZHENG Chu-guang  JLTAZEVEDO  MGCARVALHO
Abstract:Numerical simulation of the flow, combustion process, and NOx emission in afront-wall coal fired boiler of 350MWe with 24 swirl burners is presented. Five different cases with 100%, 95%, 85%, 70% and 50% boiler full load aresimulated. The comparison between the simulation and the plant data shows agood agreement for all cases except the one of 50% boiler load. The calculatedresults illustrate that the NOx model used shows a higher sensitivity totemperature than to oxygen level in the furnace.
Keywords:coal combustion  NOx emission  numerical simulation  
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