石油化工高等学校学报

石油化工高等学校学报 ›› 2019, Vol. 32 ›› Issue (5): 62-68.DOI: 10.3969/j.issn.1006-396X.2019.05.011

• 油气储运 • 上一篇    下一篇

水蒸气对甲烷燃烧影响的数值模拟研究

单天翔崔淦李自力王顺   

  1. (中国石油大学(华东) 储运与建筑工程学院,山东 青岛 266580)
  • 收稿日期:2018-09-18 修回日期:2019-01-19 出版日期:2019-10-31 发布日期:2019-10-30
  • 通讯作者: 崔淦(1989⁃),男,博士,副教授,从事油气储运系统安全工程方向研究;E⁃mail:chennacuigan@163.com
  • 作者简介:单天翔(1994-),男,硕士研究生,从事油气储运系统安全工程方向研究;E-mail:472074639@qq.com
  • 基金资助:
    国家自然科学基金项目(51804329);山东省自然科学基金(No.ZR2019QEE009);中央高校基本科研业务费专项资金(No.18CX02005A)

Numerical Simulation of Water Vapor’s Effect on Methane Combustion

Shan TianxiangCui GanLi ZiliWang Shun   

  1. (College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao Shandong 266580, China)
  • Received:2018-09-18 Revised:2019-01-19 Published:2019-10-31 Online:2019-10-30

摘要: 为了研究水蒸气对于甲烷燃烧微观反应进程的影响,利用Chemkin 17.0研究了水蒸气对甲烷燃烧的绝热火焰温度、预混火焰温度和层流预混火焰燃烧速度的作用规律,研究了水蒸气对甲烷燃烧过程中链式反应进程的影响。结果表明,随着水蒸气摩尔分数的增加,甲烷燃烧火焰温度降低,预混火焰传播速度下降,且火焰中的H、O、OH自由基浓度均下降,但是OH自由基所占的比例增加,导致由OH自由基所传递的反应占主导地位。水蒸气的加入强化了CH3➝CH2(s)➝CH2➝CH➝CH2O过程,同时强化了CH3➝CH3O➝CH2O过程,改变了甲烷燃烧的链式反应。

关键词: 水蒸气, 甲烷, 燃烧速度, 自由基, 链式反应

Abstract:  The effects of water vapor on the adiabatic flame temperature, premixed flame temperature and laminar premixed flame velocity of methane combustion were studied by using Chemkin 17.0, and the effect of water vapor on the chain reaction process of methane combustion was also studied. The results show that with the increase of water vapor content, the temperature of methane flame and premixed laminar flame speed decrease, and the concentration of H,O,OH free radicals is also reduced, while the proportion of OH free radical is raised, leading to the dominance of reactions transmitted by OH free radicals. The addition of water vapor changes the chain reaction of methane combustion, enhances the reaction of CH3 to CH2(s),CH2(s) to CH2,CH2 to CH,CH to CH2O, and enhances the reaction of CH3 to CH3O,CH3O to CH2O at the same time.

Key words: Water vapor, Methane, Flame velocity, Free radical, Chain reaction

引用本文

单天翔,崔淦,李自力,王顺. 水蒸气对甲烷燃烧影响的数值模拟研究[J]. 石油化工高等学校学报, 2019, 32(5): 62-68.

Shan Tianxiang,Cui Gan,Li Zili,Wang Shun. Numerical Simulation of Water Vapor’s Effect on Methane Combustion[J]. Journal of Petrochemical Universities, 2019, 32(5): 62-68.

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