Study on Formation Mechanisms and Control of NO_x in High Prssure Combustion

高压燃烧NO_x形成机理及控制研究

• 批准号: 05650209
• 负责人: SANO Taeko
• 金额: $ 1.41万
• 依托单位: TOKAI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650209/
• 关键词: Methane Flame; NO Formation; Prompt NO Formation; Laminar Flame; Numerical Analysis; Reaction Kinetics; NOx生成; 層流予混合火炎; 化学反応動力学; 数値計算

The equations of one-dimensional laminar flame propagation were numerically resolved to study the formation of NO and prompt NO in the premixed methane-air flame by considering 37 species with 144 elementary reactions and by using theoretically calculated transport properties.(1) By comparing the concentration profiles of NO calculated with and without prompt NO formation reactions, the formation of prompt NO is found to be predominantly governed by the reaction CH+N_2*HCN+N.(2) At any equivalence ratio from 0.6 to 1.4, the prompt NO is rapidly formed in the visible flame region and does not increase in the downstream rgion except for the equivalence ratio of 1.4. In the flame of equivalence ratio of 1.4, the prompt NO is formed still in the downstream region.(3) The concentration ratio of the prompt NO to the total NO is large in the visible flame region and it deacreases rapidly in the downstream region except for the equivalence ratio of 1.4.(4) The formation of prompt NO increases slightly with the unburned gas temperature from 298K to 398K in the lean flame, but does not change in the rich flame.(5) The formation of prompt NO increases with the pressure from 0.1MPa to 0.2MPa in the rich flame.

通过对一维层流火焰传播方程的数值求解，研究了甲烷-空气预混火焰中37种组分144个基元反应和传输特性对NO和瞬发NO生成的影响。(1)通过比较有无瞬发NO生成反应的NO浓度分布，发现瞬发NO的生成主要受CH+N_2*HCN+N反应控制。(2)当当量比为0.6 ~ 1.4时，瞬时NO在可见火焰区迅速生成，而在下游区除当量比为1.4外，不增加。在当量比为1.4的火焰中，在下游区域仍有瞬发NO生成。(3)瞬时NO与总NO的浓度比在可见火焰区域较大，在下游区域除当量比为1.4外迅速减小。(4)在298 ~ 398 K范围内，贫燃火焰中瞬发NO的生成量随未燃气体温度的升高而略有增加，而富燃火焰中瞬发NO的生成量基本不变。(5)在富燃火焰中，压力在0.1 ~ 0.2MPa范围内，瞬发NO的生成量随压力的增加而增加。

项目成果

佐野妙子: "メタン平面火炎内でのprompt NOの生成" Thermal Sience & Engineering. 1. 7-21 (1993)

Taeko Sano：“甲烷平面火焰中瞬发 NO 的生成”热科学与工程 1. 7-21 (1993)。

T.Sano: "Formation of prompt NO in Flat Flame of Methane" Proceedings of Fifteench Task Leaders Meeting. 15. 112-119 (1993)

T.Sano：“在甲烷平焰中快速形成 NO”15 次任务领导会议记录。

佐野妙子: "NOxとその生成" ガスタービン学会誌. 21. 23-28 (1993)

Taeko Sano：“NOx 及其生成”《燃气轮机学会杂志》21. 23-28 (1993)。

佐野妙子: "NOxの生成" 日本機械学会第71期通常総会講演論文集. 652- (1994)

Taeko Sano：日本机械工程师学会第 71 届普通大会论文集“NOx 的产生”，652-（1994 年）。

佐野妙子: "メタン平面火炎内でのNOの生成;温度・圧力・当量比の影響" ガスタービン講演会講演論文集. 53-59 (1993)

Taeko Sano：“甲烷平面火焰中 NO 的生成；温度、压力和当量比的影响”燃气轮机会议记录 53-59 (1993)。