六角切圆锅炉燃烧器区域气固两相流场的试验研究  

Experimental research on Gas-Solid Two-Phase Flow Field Near Burner Region of Six-Corner Tangentially Fired Boiler

作　　者：赵玉晓[1] 李瑞扬[1] 孙斌[2] 秦裕琨[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院 [2]佳木斯大学信息电子技术学院,佳木斯154007

出　　处：《燃烧科学与技术》2004年第4期322-326,共5页Journal of Combustion Science and Technology

基　　金：清华大学煤的清洁燃烧技术国家重点实验室开放基金资助项目

摘　　要：针对某六角切圆燃烧煤粉锅炉存在的受热面结渣问题 ,建立冷态试验台 ,采用三维粒子动态分析仪对燃烧器区域的气固两相流场进行测量 ,研究原始设计工况及加大上层燃烧器二次风假想切圆直径的改进工况下 ,燃烧器区域的气固两相速度场 .试验研究表明 ,适当采用一、二次风同心双切圆布置形式 ,能有效改善炉内流场特性 。Aimed at the slag problem on heat-transfer-surface of a six-corner tangentially fired pulverized coal boiler, cold experimental system was built. Particle dynamics analyzer (PDA) was used to measure gas-solid two-phase flow field near burner region. Two cases were designed-initial design case and improved case which the imaginary tangential circle diameter of secondary air at top layer burners was increased. Gas-solid two-phase velocity filed near burner region in two cases were studied. The results show that adopting homocentric two tangential circles of primary air and secondary air properly can improve flow field characteristics in furnace effectively, and thus slag is control.

关 键 词：六角切圆燃烧 气固两相流场 同心双切圆 

分 类 号：TK22[动力工程及工程热物理—动力机械及工程]