合成气
甲醇
氢
机制(生物学)
合成气制汽油
化学
化学工程
工艺工程
材料科学
制氢
蒸汽重整
有机化学
工程类
物理
量子力学
作者
Yong Jian Wang,Wuqiang Long,Hua Tian,Pengbo Dong,Mengkai Lü,Yuanyou Tang,Yan Wang,Weiqi Zhang
出处
期刊:Fuel
[Elsevier]
日期:2024-06-01
卷期号:365: 131211-131211
标识
DOI:10.1016/j.fuel.2024.131211
摘要
As a kind of promising additive fuel for spark ignition methanol engine, hydrogen/CO-rich syngas, produced by reforming methanol has attracted considerable attention because of its positive effects on engine combustion. In the current study, a chemical mechanism for hydrogen-methanol and syngas-methanol combustion was developed to predict the engine performance. The kinetic mechanisms, includes 39 species and 193 elementary reactions after reducing and optimizing the detailed chemical mechanism (Burke et al., 2016). It was proved that this mechanism can well predict the ignition delay time, laminar burning velocity and the typical species evolution of hydrogen-methanol and syngas-methanol mixtures. Moreover, the differences between the effects of hydrogen and syngas additions on the ignition delay and laminar burning velocity were analyzed quantitively. Based on the mechanism and bench test data, computational investigations on the knock and combustion characteristics of methanol, hydrogen/methanol and syngas/methanol stoichiometric operation engines were conducted. In order to further improve the comprehensive thermal efficiency, the engine operation scheme accompanied with a methanol-reformer was proposed, and the syngas blending ratio can reach 0.076 within the knock limitation. In this way, the corresponding comprehensive thermal efficiency of the system is increased by 1.96% compared with the original methanol engine.
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