The oxidation of 2-butene: A high pressure ignition delay, kinetic modeling study and reactivity comparison with isobutene and 1-butene
The oxidation of 2-butene: A high pressure ignition delay, kinetic modeling study and reactivity comparison with isobutene and 1-butene
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DOI：
10.1016/j.proci.2016.05.052
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发表时间：
2017
期刊：
影响因子：
3.2
通讯作者：
Yang Li;Chong-wen Zhou;K. Somers;Kuiwen Zhang;H. Curran
中科院分区：
文献类型：
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作者：
Yang Li;Chong-wen Zhou;K. Somers;Kuiwen Zhang;H. Curran
丁烯是普遍存在的中间体，由较大的碳氢化合物(如烷烃)或传统或重新配方燃料中的醇分解和氧化形成。在与实际燃烧室相关的条件下，在高压激波管(HPST)和快速压缩机(RCM)上进行了一系列新型的反式-2-丁烯着火延迟时间(IDT)实验。这是第一个在发动机相关条件下获得的反式-2-丁烯的IDT数据，HPST和RCM结果的结合极大地扩大了反式-2-丁烯在更高的压力(10-50atm)、更低的温度(670-1350kK)和广泛的当量比(0.5-2.0)下氧化的数据范围。同时建立了描述反式-2-丁烯燃烧的综合化学动力学机理。除了大量的文献数据外，本文还利用这里测量的IDT数据进行了验证：喷射搅拌反应器(JSR)形态数据、预混火焰形态数据、流动反应器形态数据和层流火焰速度数据。此外，还比较了反式-2-丁烯与其他两种异构体1-丁烯和异丁烯的反应活性，并对这些比较进行了讨论。通过助熔剂和敏感性分析强调了重要的反应，并有助于解释丁烯异构体之间的反应性差异。
Butenes are intermediates ubiquitously formed by decomposition and oxidation of larger hydrocarbons (e.g. alkanes) or alcohols present in conventional or reformulated fuels. In this study, a series of novel ignition delay time (IDT) experiments of trans-2-butene were performed in a high-pressure shock tube (HPST) and in a rapid compression machine (RCM) under conditions of relevance to practical combustors. This is the first IDT data of trans-2-butene taken at engine relevant conditions, and the combination of HPST and RCM results greatly expands the range of data available for the oxidation of trans-2-butene to higher pressures (10–50 atm), lower temperatures (670–1350 K) and a wide range of equivalence ratios (0.5–2.0). A comprehensive chemical kinetic mechanism has simultaneously been developed to describe the combustion of trans-2-butene. It has been validated using the IDT data measured here in addition to a large variety of literature data: jet-stirred reactor (JSR) speciation data, premixed flame speciation data, flow reactor speciation data and laminar flame speed data. Moreover, the reactivity of trans-2-butene is compared to that of the other two isomers, 1-butene and isobutene, and these comparisons are discussed. Important reactions are highlighted via flux and sensitivity analyses and help explain the differences in reactivity among the butene isomers.