The influence of ethanol addition on a rich premixed benzene flame at low pressure
The influence of ethanol addition on a rich premixed benzene flame at low pressure
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DOI：
10.1016/j.combustflame.2014.03.005
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发表时间：
2014-09
影响因子：
4.4
通讯作者：
V. Dias;H. M. Katshiatshia;H. Jeanmart
中科院分区：
文献类型：
--
作者：
V. Dias;H. M. Katshiatshia;H. Jeanmart
本研究的目的是分析乙醇在富苯火焰中的影响，观察这种含氧物质的影响，并了解乙醇在苯燃烧中的动力学。两种预混合的富苯/氧气/氩气（11.5% C6H6、43.2% O2、45.3% Ar）和苯/乙醇/氧气/氩气（10.7% C6H6、2.1% C2H5OH、43.2% O2、44.0% Ar）平焰在具有相同燃烧器的低压（45 mbar）下稳定当量比2.0。使用分子束质谱 (M.B.M.S.) 来识别和监测火焰中物质的信号强度分布。一些 C6H6 被 C2H5OH 取代导致主要中间体物质（例如 C2H2、C4H2、C4H4 和 C5H6）的最大浓度降低。 UCL机制扩展到较重的碳氢化合物，针对这些火焰进行测试以检查其有效性，并用于强调乙醇对烟灰前体形成的影响。它包含 1028 个基元反应和 184 个化学物质。
The aim of the study is to analyze the effect of ethanol in rich benzene flame, to observe the influence of this oxygenated species and to understand the kinetics of ethanol in the benzene combustion. Two premixed rich benzene/oxygen/argon (11.5% C6H6, 43.2% O2, 45.3% Ar) and benzene/ethanol/oxygen/argon (10.7% C6H6, 2.1% C2H5OH, 43.2% O2, 44.0% Ar) flat flames are stabilized at low pressure (45 mbar) on a burner with the same equivalence ratio of 2.0. Identification and monitoring of signal intensity profiles of species within the flames are carried out using molecular beam mass spectrometry (M.B.M.S.). The substitution of some C6H6by C2H5OH is responsible for a reduction of the maximum concentrations of main intermediate species such as C2H2, C4H2, C4H4and C5H6. TheUCLmechanism is extended to heavier hydrocarbons, tested against these flames to check its validity and used to underline the effect of ethanol on soot precursors formation. It contains 1028 elementary reactions and 184 chemical species.