Study of soot formation in flames

火焰中烟灰形成的研究

• 批准号: 10450084
• 负责人: TAKENO Tadao
• 金额: $ 9.09万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10450084/
• 关键词: Soot; PAHs; GC; MS; Numerical Study; Formation Mechanism; Environment; Combustion; Diffusion Flame; 火炎; 多環芳香炭化水素; 化学反応機構; ガスサンプリング; レーザ熱化学光法

Studies of soot formation in flames have performed numerically and experimentally. Currently most well-known soot formation is known as following steps :Details in each step, however, have not yet completely understood because of its complexity. The recent major interest is focused on step 2 because some PAHs are reported as spontaneously cancer-induced species. Therefore, in related to the understanding of soot formation, the formation of PAH must be understood in the first place. Objective of this research projects is basically based on this point. In the numerical part, Hai-Wang's chemical reaction mechanism (which consists of nearly 50 species and 500 elementally reactions) is used to predict PAHs and its mole production rate distributions in counter methane-air diffusion flames and double flames. On the other hands, in the experimental part, GC/MS analysis of direct sampled gases from the flames (and LIF technique) were applied to measure the profiles of PAHs distribution of diffusion flames. The numerical results show that there is certain production routes to form Benzene, which is the first form of PAHs, is diffusion flames and C3HX species could controls its process. Moreover, the numerical results underpredict of the production of Benzene. The comparisons of numerical and experimental results suggest that revision of chemical reaction mechanism would be needed to predict, precise, quantitative PAHs data.

火焰中烟灰形成的研究已在数值和实验上进行。目前，最著名的烟灰形成被称为以下步骤：由于其复杂性，每个步骤中的细节尚未完全理解。最近的主要兴趣集中在第2步上，因为某些PAH据报道是自发的癌症引起的物种。因此，与对烟灰形成的理解有关，必须首先理解PAH的形成。该研究项目的目的基本上是基于这一点。在数值部分中，Hai-Wang的化学反应机制（由近50种和500个基本反应组成）用于预测PAH及其在反甲烷 - 空气扩散火焰和双重火焰中的摩尔产量分布。另一方面，在实验部分中，应用了来自火焰（和LIF技术）的直接采样气体的GC/MS分析，以测量扩散火焰的PAHS分布的曲线。数值结果表明，存在某些形成苯的生产途径，这是PAH的第一种形式，是扩散火焰，C3HX物种可以控制其过程。此外，数值结果低估了苯生产的预测。数值和实验结果的比较表明，需要修改化学反应机制来预测，精确的定量PAHS数据。

项目成果

Takeo ASANO and Tadao TAKENO: "Experimental Study by GC/MS of Benzene Formation in Diffusion Flames"Proc. of the Thirty-First Tokai Branch Annual Meeting forStudents of The Japanese Society of Mechanical Engineers. 183-184 (2000)

Takeo ASANO 和 Tadao TAKENO：“扩散火焰中苯形成的 GC/MS 实验研究”Proc。

Koh KOMORI, Xuelei ZHU, Tadao TAKENO and Makihito NISHIOKA: "Study of PAHs formation in Counter Flow Diffusion Flames"Proc. of the Thirty-Sixth Japanese Symposium on Combusion. 755-757 (1998)

Koh KOMORI、Xuelei ZHU、Tadao TAKENO 和 Makihito NISHIOKA：“逆流扩散火焰中 PAH 形成的研究”Proc。

小森 晃: "対向流拡散火炎中のPAH生成機構に関する研究" 第36回燃焼シンポジウム講演論文集. 755-757 (1998)

小森晃：“逆流扩散火焰中 PAH 形成机理的研究”第 36 届燃烧研讨会论文集 755-757（1998）。

酒井伸吾: "GC/MSを用いた拡散火炎中のPAHの測定"第37回燃焼シンポジウム講演論文集. 189-190 (1999)

Shingo Sakai：“使用 GC/MS 测量扩散火焰中的 PAH”第 37 届燃烧研讨会论文集 189-190 (1999)。

小森 晃: "対向流拡散火炎中のPAH生成機構に関する研究"第36回燃焼シンポジウム講演論文集. 755-757 (1998)

小森晃：“逆流扩散火焰中 PAH 生成机理的研究”第 36 届燃烧研讨会论文集 755-757（1998）。