ABE燃料成分变化对其预混层流燃烧特性的影响

张尊华; 杜睿恒; 熊晋影; 梁俊杰; 李格升

doi:10.16411/j.cnki.issn1006-7736.2020.03.013

大连海事大学学报 >

2020 , Vol. 46 >Issue 3: 109 - 116

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2020.03.013

船舶与海洋工程

ABE燃料成分变化对其预混层流燃烧特性的影响

张尊华 ,
杜睿恒 ,
熊晋影 ,
梁俊杰 ,
李格升

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(武汉理工大学能源与动力工程学院，武汉 430063)

张尊华（1982 — ），男，博士，副教授，博士生导师，E-mail：zunhuazhang@whut.edu.cn.

收稿日期: 2020-04-03

修回日期: 2020-06-23

网络出版日期: 2020-06-23

基金资助

国家自然科学基金资助项目（51809204）;国家大学生创新创业训练项目（201910497110）.

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Effect of fuel composition on premixed laminar combustion characteristics of ABE

ZHANG Zun-hua ,
DU Rui-heng ,
XIONG Jin-ying ,
LIANG Jun-jie ,
LI Ge-sheng

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(School of Energy and Power Engineering, Wuhan University of Technology, Wuhan 430063, China)

Received date: 2020-04-03

Revised date: 2020-06-23

Online published: 2020-06-23

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摘要

利用球形传播火焰试验和一维平面火焰数值模拟，研究了在393 K、0.1 MPa、当量比分别为0.8、1.1、1.3条件下，不同组分含量的丙酮-正丁醇-乙醇（ABE）混合燃料预混层流燃烧特性，并对其进行化学动力学分析.结果表明，当ABE组分含量比为0.8∶9∶0.2与0.2∶9∶0.8时，组分含量变化对ABE混合物层流燃烧速度无明显影响；当ABE组分含量比为1∶5∶4与4∶5∶1时，乙醇含量越多，ABE燃料的层流燃烧速度越高.组分含量对火焰的马克斯坦长度的影响较小.反应路径分析表明，不同组分含量的ABE火焰中的丙酮、正丁醇和乙醇被消耗生成的物质没有明显变化，而被消耗量略有变化.自由基分析表明，随着组分含量的变化，ABE火焰中的H、O和OH的摩尔分数峰值无明显变化，而CH₃和HO₂的摩尔分数峰值存在一定的变化，且组分含量变化对H和OH生成率峰值有一定的影响.

关键词： 丙酮-正丁醇-乙醇（ABE）混合燃料; 球形传播火焰; 层流燃烧速度; 化学动力学

本文引用格式

张尊华 , 杜睿恒 , 熊晋影 , 梁俊杰 , 李格升 . ABE燃料成分变化对其预混层流燃烧特性的影响[J]. 大连海事大学学报, 2020 , 46(3) : 109 -116 . DOI: 10.16411/j.cnki.issn1006-7736.2020.03.013

Abstract

The laminar combustion characteristics of acetone-n-butanol-ethanol in different components at 393 K, 0.1 MPa, equivalence ratios of 0.8, 1.1 and 1.3 were studied by propagating spherical flame test and the one-dimensional planar flame numerical simulation. The result shows that when the content ratios of ABE component are 0.8:9:0.2 and 0.2:9:0.8, the component content has no significant effect on the laminar burning velocities of ABE mixtures. When the content ratios of ABE component are 1:5:4 and 4:5:1, The laminar burning velocity of ABE mixture increases with the increase of the ethanol content. The component content has a small effect on the Markstein length, but the equivalence ratio has a greater effect on it. The reaction pathway analysis shows that the substances produced by consumption of acetone, n-butanol and ethanol with different content of ABE components has no obvious changes, but the consumption changes slightly. The free radical analysis shows that the maximum mole fractions of H, O and OH in ABE flame have no obvious change with the change of component content, but the maximum mole fractions of CH₃ and HO₂ have more significant change, and the change of component content have obvious influence on the maximum production rates of H and OH.

The premixed laminar combustion characteristics of acetone-n-butanol-ethanol (ABE) premixed fuel with different components at 393 K, 0.1 MPa and equivalence ratio of 0.8, 1.1 and 1.3 were studied by propagating spherical flame test and one-dimensional planar flame numerical simulation, and the chemical kinetics analysis was conducted. The result shows that when the content ratios of ABE component are 0.8∶9∶0.2 and 0.2∶9∶0.8, the component content has no significant effect on the laminar burning velocities of ABE mixtures. When the content ratios of ABE component are 1∶5∶4 and 4∶5∶1, the laminar burning velocity of ABE mixture increases with the increase of the ethanol content. The component content has a small effect on the Markstein length, but the equivalence ratio has a greater effect on it. The reaction pathway analysis shows that the substances produced by consumption of acetone, n-butanol and ethanol with different content of ABE components has no obvious changes, but the consumption changes slightly. The free radical analysis shows that the maximum mole fractions of H, O and OH in ABE flame have no obvious change with the change of component content, but the maximum mole fractions of CH₃and HO₂have more significant change, and the change of component content have obvious influence on the maximum production rates of H and OH.

Key words： acetone-n-butanol-ethanol (ABE) fuel; spherical propagating flames; laminar burning velocity; chemical kinetics

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