摘要
针对切向燃烧锅炉普遍存在的烟气偏差问题 ,从工程应用角度出发 ,提出新的调节方式。通过调整上二次风量的分配 ,形成炉内烟气流动中局部的高压富燃区 ,挤压火焰主流 ,改变炉膛出口烟气流量分布 ,控制烟气偏差。从理论上分析其可行性 ,并通过冷态模化试验等研究手段进行检验。研究结果表明 ,这种调节手段可以平衡水平烟道两侧流量 ,达到削弱残余旋转 。
With regard to the common problem of gas deviation in a tangentially fired boiler this paper presents a new regulation approach from the perspective of engineering applications. Through an adjustment of the distribution of secondary air flow created is a local high-pressure and fuel-rich zone in the in-furnace gas flow. By squeezing and impacting on the flame main flow this zone can change the gas flow distribution at the furnace outlet, thus limiting the gas deviation. The feasibility of such a method has been validated from a theoretical analysis and checked by way of a cold model test. The results of study indicate that under this method of regulation the gas flow at the two sides of the horizontal flue duct can be balanced, resulting in a weakening of the residual swirl and a decrease in gas deviation.
出处
《热能动力工程》
EI
CAS
CSCD
北大核心
2001年第3期278-281,共4页
Journal of Engineering for Thermal Energy and Power
关键词
烟气偏差
切向燃烧锅炉
二次风量
模型试验
boiler, pulverized coal combustion, gas deviation, secondary air regulation, model test
