摘要
对空气氛围下甲烷的加湿燃烧进行了数值模拟,在保持甲烷与空气流量恒定的条件下,考察了加湿率对燃料燃烧特性、燃烧速率以及主要污染物(碳烟、氮氧化物、一氧化碳)排放的影响。模拟结果表明:随着加湿率的增加,燃料的燃烧速率提高,各污染物的排放均减少,一氧化碳和碳烟排放分别在加湿率为0~20%,0~10%时下降明显,氮氧化物排放则呈线性降低;综合考虑节能环保与燃烧器的安全运行,燃料的最佳加湿率不宜超过20%。
The numerical simulation of methane premixed water vapor combustion in air atmosphere was performed,and under the condition of the flow of methane and oxidant constant,the effects of fuel humidification on combustion characteristics,combustion rate,and emissions of major pollutants(soot,nitrogen oxide,and CO)were analyzed.The simulation results showed that with the increasing of humidification ratio,the combustion rate had increased while the emissions of various pollutants decreased.CO emissions had decreased significantly when the humidification ratio was within the range of 0 to 20%;soot emissions had decreased significantly when the humidification ratio was within the range of 0 to 10%and NOx emissions decreased linearly.Considering energy conservation,environmental protection and the safe operation of the burner,the optimal humidification ratio of the fuel should not exceed 20%.
作者
王珂
WANG Ke(College of Petroleum Engineering, Yangtze University, Wuhan 430010, China)
出处
《石化技术与应用》
CAS
2020年第5期295-299,共5页
Petrochemical Technology & Application
关键词
甲烷
加湿燃烧
空气
加湿率
碳烟
氮氧化物
一氧化碳
数值模拟
methane
humidified combustion
air atmosphere
humidification ratio
soot
nitrogen oxide
carbon monoxide
numerical simulation
