The paper contains the results of experimental studies of the effect of moisture on nitrogen dioxide formation and on oxidation of NO to NO2 in laminar premixed flame of natural gas. The water vapor is shown to be the third very influential participant, along with fuel and oxidizer, in the combustion process. Injection of moisture into the combustion zone has an effect due to the insertion of additional quantities of HO2- and OH– radicals into the process, which contributes to the intensification of the oxidation of NO to NO2. Introduction of the concept of the “excess moisture ratio” in the combustion process is proposed. The studies were executed at the laboratory installation in conditions of formation of the V-shaped laminar flame of natural gas behind a transverse cylindrical steel stabilizer, with determining the concentrations of flue gas components.

中文翻译：

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水分对天然气层流火焰中二氧化氮形成的影响

本文包含在天然气层流预混火焰中水分对二氧化氮形成和 NO 氧化为 NO2 影响的实验研究结果。水蒸气被证明是燃烧过程中第三个非常有影响力的参与者，与燃料和氧化剂一样。由于在过程中插入了额外数量的 HO2- 和 OH- 自由基，将水分注入燃烧区会产生影响，这有助于强化 NO 到 NO2 的氧化。提出在燃烧过程中引入“过量水分比”的概念。这些研究是在实验室装置中在横向圆柱形钢稳定器后面形成天然气 V 形层流火焰的条件下进行的，