不同O_2/CO_2浓度下燃烧器燃烧特性数值模拟  

Numerical Simulation of Combustion Characteristics of Burner under Different O_2/CO_2 Concentration

作　　者：田赛[1] 芮文明 王爱华[1] 刘宇 张炎[1] 

机构地区：[1]东北大学国家环境保护生态工业重点实验室,辽宁沈阳110819 [2]上海鼎研智能科技有限公司,上海201600

出　　处：《工业炉》2016年第5期1-5,19,共6页Industrial Furnace

基　　金：国家科技支撑计划项目(2015BAB18B02)

摘　　要：针对叶片角度为30°的旋流式天然气纯氧燃烧器,采用Fluent软件对不同助燃风成分为23%O_2/77%CO_2、30%O_2/70%CO_2及40%O_2/60%CO_2配比条件下的燃烧器燃烧特性进行模拟,获得燃烧室内的温度场和浓度场分布。结果表明:不同的O_2/CO_2浓度配比对燃烧室内温度分布影响较大。不同的O_2/CO_2浓度配比对燃烧中间产物CO和H2的浓度分布影响不大,但直接决定了CO_2和H_2O的含量。Under different proportions of combustion air component of 23% O2/77% CO2, 30% O2/70% CO2 and 40% O2/60% CO2 for the vane angle of 30°, the swirling oxygen gas burner is simulated by utilizing Fluent software, obtained temperature field and concentration field distribution in the combustion chamber. The results show that the different concentration proportions of O2/CO2 has the large effect on temperature distribution in the combustion chamber. Different concentrations proportion of O2/CO2 has little impact on combustion intermediate products CO and H2 concentrations distribution, but determines directly the CO2 and H2O content.

关 键 词：叶片角度 纯氧燃烧器 温度场 浓度场分布 

分 类 号：TK16[动力工程及工程热物理—热能工程]