摘要
利用实验和数值模拟方法,分析了两种不同燃烧器对油田用火筒式加热炉内部温度场、流场以及燃烧过程中NO_x(氮氧化物)生成情况的影响。两种燃烧器功率均为700 kW,通过实验测量和数值模拟得到以下结论:在相同的功率情况下,采用强制鼓风式燃烧器的加热炉炉内具有更高的平均温度;大气式燃烧器产生的火焰偏斜严重,炉顶部容易受到烟气冲刷而产生高温区域,炉底部烟气流量较小温度较低,换热条件较差;大气式燃烧器和强制鼓风式燃烧器在加热炉炉内燃烧所排放的烟气中NO_x质量—体积浓度差别较小,分别为118.3和108.1 mg/m^3。
This paper adopts experimental and numerical methods to analyze the influence of two different burners on the temperature field,flow field and nitrogen oxide generated during the process of combustion in drum type heating furnace. The input power of two burners is both set to be 700 KW and some conclusions are drawn as follows: The average temperature in the furnace generated by the forced air blast burner is higher than that by the atmospheric burner. The flame deflection by the atmospheric burner is worse than that by the forced air blast burner. The top of furnace is easy to be washed by the gas to generate a high-temperature region when the atmospheric burner is used.The gas flow at the bottom of the furnace is lower,and the heat transfer condition is poor. The contents of NOxin the flue gas from the combustion in the atmospheric burner and forced air blast burner are 0. 014 64% and 0. 015 12%,respectively.
出处
《热能动力工程》
CAS
CSCD
北大核心
2016年第10期43-49,125,共7页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金(No.51276117)
质检公益性行业科研专项(No.201310163)
关键词
燃烧器
加热炉
数值模拟
burner
heating furnace
numerical simulation
