Soot reduction effects of the addition of four butanol isomers on partially premixed flames of diesel surrogates
Soot reduction effects of the addition of four butanol isomers on partially premixed flames of diesel surrogates
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添加四种丁醇异构体对柴油替代品部分预混火焰的烟灰减少效果
DOI：
10.1016/j.combustflame.2016.12.012
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发表时间：
2017-03
影响因子：
4.4
通讯作者：
Kyritsis Dimitrios C.
中科院分区：
文献类型：
--
作者：
Chen Beiling;Liu Xinlei;Liu Haifeng;Wang Hu;Yao Mingfa;Kyritsis Dimitrios C.
将丁醇的4种醇类异构体以20%和40%的体积分数添加到T20柴油替代物（80%正庚烷和20%甲苯）中，研究丁醇对多环芳烃（PAHs）和碳烟生成的影响。为了排除甲苯的影响，还研究了T16（84%正庚烷和16%甲苯）和T12（88%正庚烷和12%甲苯）的火焰，比较了相同甲苯含量下20%和40%丁醇的混合火焰。采用激光诱导荧光和激光诱导白炽法研究了多环芳烃的分布和浓度以及烟尘的体积分数。建立了详细的正庚烷-甲苯-丁醇-多环芳烃动力学模型，以阐明不同丁醇混合燃料对多环芳烃生成的化学影响。结果表明，与T20基础燃料相比，甲苯含量的降低（由于丁醇的加入）是减少PAH和碳烟的主导因素。丁醇混合燃料中PAH生成的不同归因于丁醇异构体的不同反应途径。支链丁醇（叔丁醇和异丁醇）比直链丁醇（正丁醇和仲丁醇）倾向于产生更多的炔丙基自由基，因此支链丁醇的PAH形成更高。添加叔丁醇和异丁醇的碳烟体积分数甚至高于不添加添加剂的碳烟体积分数，而添加正丁醇和仲丁醇可以降低碳烟体积分数，与T16和T12相比，碳烟体积分数进一步由其含氧分子结构引起。在20%和40%的共混比下，碳烟的形成趋势实际上可以由叔丁醇>异丁醇>仲丁醇>正丁醇来排序。四环多环芳烃的浓度与碳烟体积分数成正比，说明四环多环芳烃可以作为碳烟生成的指示物。
The four alcoholic isomers of butanol were added into T20 diesel surrogate (80% n-heptane and 20% toluene in volume) in co-flow partially premixed flames at volumetric fractions of 20% and 40% in order to investigate the effect of butanol addition on polycyclic aromatic hydrocarbons (PAHs) and soot formation. For excluding the influence of toluene, the flame of T16 (84% n-heptane and 16% toluene in volume) and T12 (88% n-heptane and 12% toluene in volume) were also investigated to compare 20% and 40% butanol blend-flames in the same content of toluene. Laser-induced fluorescence and laser-induced incandescence were used to probe the distributions and concentrations of PAHs and soot volume fraction. A detailed n-heptane-toluene-butanols-PAH kinetic model was constructed in order to clarify the chemical effects of the different butanol-blended fuels on PAH formation. The results show that the reduced toluene content (due to butanol addition) is the dominant factor for PAH and soot reduction, compared with the base fuel of T20. The different PAH formation for the tested butanol-blended fuels is attributed to the different reaction pathways of butanol isomers. The branched-carbon-chain butanols (tertiary butanol and isobutanol) tend to produce more propargyl radicals than those of straight-carbon-chain butanols (normal butanol and secondary butanol), thus the PAH formation is higher for the branched butanols. The soot volume fractions with tertiary butanol and isobutanol addition are even higher than that without an additive in the fuel, while the addition of normal butanol and second butanol can reduce soot volume fractions further caused by its oxygenated molecular structure compared with T16 and T12. The soot formation tendency can actually be sequenced by tertiary butanol>isobutanol>secondary butanol>normal butanol at both 20% and 40% blending ratios. The concentration of four-ring PAHs is proportional to soot volume fraction, which means that four-ring PAHs can be used as the indicator of soot formation.
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DOI：
10.1016/s0921-0423(96)80051-7
发表时间：
1996
期刊：
Progress in Biotechnology
影响因子：
--
作者：
N. Barron;D. Brady;G. Love;R. Marchant;P. Nigam;L. Mchale;A. McHale
通讯作者：
N. Barron;D. Brady;G. Love;R. Marchant;P. Nigam;L. Mchale;A. McHale
丁醇四种异构体柴油常规低温燃烧实验研究
影响因子：
7.4
作者：
Haifeng Liu;Yan Zhang;Xiaofan Zhong;Mingfa Yao
通讯作者：
Mingfa Yao
影响因子：
1.9
作者：
C. Douté;J. Delfau;C. Vovelle
通讯作者：
C. Douté;J. Delfau;C. Vovelle
影响因子：
3.7
作者：
DELAMORA, JF
通讯作者：
DELAMORA, JF
DOI：
10.1016/j.proci.2010.06.163
发表时间：
2011
期刊：
--
影响因子：
--
作者：
P. Veloo;F. Egolfopoulos
通讯作者：
P. Veloo;F. Egolfopoulos