PDF-ARRHENIUS方法模拟煤粉燃烧氮氧化物生成  

USING PDF-ARRHENIUS TO SIMULATE 3-DIMENSIONALLY NOX FORMATION DURING COAL COMBUSTION

作　　者：向军[1] 熊友辉[1] 郑楚光[1] 孙学信[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《中国电机工程学报》2002年第6期156-166,共11页Proceedings of the CSEE

摘　　要：电厂锅炉炉内燃烧过程数值模拟方法已成为锅炉辅助设计、优化运行、故障诊断等环节的重要手段。该文研究采用PDF-Arrhenius方法模拟煤粉燃烧过程,并简要介绍流体流动、煤粉热解和燃烧、辐射传热、固体颗粒相运动等数学模型。文中使用双平行反应模型模拟煤的燃烧过程,并开发了一套电厂锅炉炉内燃烧过程数值模拟软件,对锅炉不同运行工况进行炉内燃烧状况的模拟,模拟结果合理、可靠,能够满足工程设计及运行指导的精度要求。A three-dimensional mathematical model for pulverized coal combustion has been developed which descri-bes gas fluid, volatile pyrolysis, char burnout, heat transfer, solid particle movement and NOX production in full scale fur-nace. Especially, a PDF-Arrhenius model was introduced to simulate the NOX emissions. The model can predict the levels of velocity, temperature, oxygen, carbon in ash and NOX content. Numerical simulation is more useful as a tool to investigate the influence of coal type on furnace performance related to differences in furnace design. This means can help boiler auto designing, optimum operation and fault diagnosis of boiler.

关 键 词：PDF-ARRHENIUS方法 模拟 煤粉 燃烧 氮氧化物生成 锅炉 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]