Premixed MILD Combustion of Propane in a Cylindrical Furnace with a Single Jet Burner: Combustion and Emission Characteristics

Premixed MILD Combustion of Propane in a Cylindrical Furnace with a Single Jet Burner: Combustion and Emission Characteristics
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丙烷在带有单喷射燃烧器的圆筒炉中预混轻度燃烧:燃烧和排放特性

DOI:
10.1021/acs.energyfuels.8b01587
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发表时间:
2018-07
期刊:
影响因子:
5.3
通讯作者:
Ren Wei
Ren Wei
中科院分区:
工程技术3区
文献类型:
--
作者:
Cheong Kin Pang;Wang Guochang;Mi Jianchun;Wang Bo;Zhu Rong;Ren Wei

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本文报道了在实验室圆筒炉上用单射流燃烧器建立的丙烷预混MILD燃烧的燃烧和排放特性。测量的空间分布的炉膛温度和物种浓度(O2,CO2,CO和NO),也废气排放的CO和NO。实验进行了不同的热输入值,注射直径,和全球当量比(Φ)。计算流体动力学(CFD)模拟和化学动力学计算的帮助下,使用一个简化的完全搅拌反应器(PSR)系统与废气再循环(EGR)的结果进行了分析。观察到,一旦注入动量率足够高以使得烟气再循环率Kv > 2.5(对于Φ = 1.0的临界值),则可以建立丙烷在本炉中的预混MILD燃烧。临界Kv随Φ福尔斯的减小而增大。应避免过渡区的入口条件。
This paper reports the combustion and emission characteristics of the premixed MILD combustion of propane established by a single jet burner in a laboratory-scale cylindrical furnace. Measurements are made of spatial distributions of the furnace temperature and species concentrations (O2, CO2, CO, and NO) and also exhaust emissions of CO and NO. Experiments are conducted for different values of thermal input, injection diameter, and global equivalence ratio (Φ). Results are analyzed with the aids of computational fluid dynamics (CFD) simulations and chemical kinetic calculations, which use a simplified perfectly stirred reactor (PSR) system with exhaust gas recirculation (EGR). It is observed that the premixed MILD combustion of propane in the present furnace can be established once the injection momentum rate is sufficiently high to enable the flue gas recirculation rate Kv > 2.5 (critical value) for Φ = 1.0. The critical Kv increases as Φ falls. Inlet conditions of the transition regime should be avoide...
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