Selective measurements and modeling for soot precursor formation using flame chromatography

• Project/Area Number: 16H06068
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Thermal engineering
• Research Institution: Tohoku University
• Principal Investigator: Nakamura Hisashi 東北大学, 流体科学研究所, 准教授 (40444020)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥24,180,000 (Direct Cost: ¥18,600,000、Indirect Cost: ¥5,580,000); Fiscal Year 2019: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2018: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000); Fiscal Year 2017: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000); Fiscal Year 2016: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
• Keywords: 燃焼 / すす / 改質 / 酸化 / 分析化学

Outline of Final Research Achievements

Soot formation is a quite complicated physicochemical process where oxidation, formation and growth of precursors, and formation and growth of particles simultaneously proceed with a rapid temperature rise within a very short reaction zone. In this study, measurements of sooting limits and precursor concentrations were made for various hydrocarbons, alcohols, and carbonate esters using an unique reactor which realizes reaction zone separation. Reaction mechanisms were validated using measured results.

Academic Significance and Societal Importance of the Research Achievements

前駆体生成モデルの妥当性と課題抽出が実施できたことにより、燃焼器からのすす生成低減を目的とした数値シミュレーションの予測性能向上が期待される。また、すす生成することなく高い改質率を実現する条件の発見、炭酸エステル等のバッテリー電解液との類似性へ着想から、燃焼改質と組み合わせた燃料電池の開発、バッテリー電解液の反応性評価という新たな展開を実現できた。

Research Products

• [Int'l Joint Research] Arizona State University/Syracuse University(米国)
• [Journal Article] Study on Products from Fuel-rich Methane Combustion near Sooting Limit Temperature Region and Importance of Methyl Radicals for the Formation of First Aromatic Rings (2021)
  • Author(s): Kanayama Keisuke、Dubey Ajit、Tezuka Takuya、Hasegawa Susumu、Nakamura Hisashi、Maruta Kaoru
  • Journal Title: Combustion Science and Technology Volume: - Issue: 4 Pages: 832-849
  • DOI: 10.1080/00102202.2020.1787394
  • Peer Reviewed / Open Access
• [Journal Article] Effects of n-Butanol Addition on Sooting Tendency and Formation of C1 - C2 Primary Intermediates of n-Heptane/Air Mixture in a Micro Flow Reactor with a Controlled Temperature Profile (2018)
  • Author(s): Mohd Hafidzal Bin Mohd Hanafi, Hisashi Nakamura, Susumu Hasegawa, Takuya Tezuka, Kaoru Maruta
  • Journal Title: Combustion Science and Technology Volume: 190 Issue: 12 Pages: 2066-2081
  • DOI: 10.1080/00102202.2018.1488694
  • Peer Reviewed
• [Journal Article] Study on sooting behavior of premixed C1-C4 n-alkanes/air flames using a micro flow reactor with a controlled temperature profile (2016)
  • Author(s): Ajit Kumar Dubey; Takuya Tezuka; Susumu Hasegawa; Hisashi Nakamura; Kaoru Maruta
  • Journal Title: Combustion and Flame Volume: 174 Pages: 100-110
  • DOI: 10.1016/j.combustflame.2016.09.007
  • Peer Reviewed
• [Presentation] Oxidation of Dimethyl Carbonate and Diethyl Carbonate in a Micro Flow Reactor with a Controlled Temperature Profile (2021)
  • Author(s): Keisuke Kanayama, Shintaro Takahashi, Shota Morikura, Hisashi Nakamura, Takuya Tezuka, Kaoru Maruta
  • Organizer: 38th International Symposium on Combustion, Work-in-Progress Poster
  • Int'l Joint Research
• [Presentation] Gas-phase reactivity difference between dimethyl carbonate and diethyl carbonate in a micro flow reactor with a controlled temperature profile (2020)
  • Author(s): Keisuke Kanayama, Shintaro Takahashi, Shota Morikura, Hisashi Nakamura, Takuya Tezuka, Kaoru Maruta
  • Organizer: Seventeenth International Conference on Flow Dynamics
  • Int'l Joint Research
• [Presentation] 温度分布制御型マイクロフローリアクタを用いた気相の炭酸ジメチルと炭酸ジエチルの反応性の差異に関する研究 (2020)
  • Author(s): 金山佳督, 高橋伸太郎, 森倉渉太, 中村 寿, 手塚卓也, 丸田 薫
  • Organizer: 第58回燃焼シンポジウム
• [Presentation] Formation of C2 Hydrocarbons at Low Temperature from Fuel-rich CH4/air Mixture in a Micro Flow Reactor with a Controlled Temperature Profile (2018)
  • Author(s): Keisuke Kanayama, Takuya Tezuka, Susumu Hasegawa, Hisashi Nakamura, Kaoru Maruta
  • Organizer: The 15th International Conference on Flow Dynamics
  • Int'l Joint Research
• [Presentation] Formation of Soot Precursors at Low Temperatures for Fuel-Rich CH4/Air Premixtures in a Micro Flow Reactor with a Controlled Temperature Profile (2018)
  • Author(s): Keisuke Kanayama, Takuya Tezuka, Susumu Hasegawa, Hisashi Nakamura, Kaoru Maruta
  • Organizer: The 37th International Symposium on Combustion, work-in-progress poster
  • Int'l Joint Research
• [Presentation] Micro-combustion of Natural Gas for Solid Oxide Fuel Cells (2018)
  • Author(s): Ryan J. Milcarek, Mengyuan Chu, Hisashi Nakamura, Kaoru Maruta, Jeongmin Ahn
  • Organizer: The 15th International Conference on Flow Dynamics
  • Int'l Joint Research
• [Presentation] Solid Oxide Fuel Cells Replacement of a Traditional Catalytic Converter (2018)
  • Author(s): Thomas S. Welles, Jeongmin Ahn, Hisashi Nakamura
  • Organizer: The 15th International Conference on Flow Dynamics
  • Int'l Joint Research
• [Presentation] 温度制御型マイクロフローリアクタにおける低温域での超過濃CH4/air混合気からのC0-C2化学種生成 (2018)
  • Author(s): 金山佳督，手塚卓也，長谷川進，中村 寿，丸田 薫
  • Organizer: 日本燃焼学会第56回燃焼シンポジウム
• [Presentation] Effects of n-butanol addition to the sooting limits and PAH formation of n-heptane in micro flow reactor with a controlled temperature profile (2017)
  • Author(s): Mohd Hafidzal Bin Mohd Hanafi, Hisashi Nakamura, Susumu Hasegawa, Takuya Tezuka, Kaoru Maruta
  • Organizer: 14th International Conference on Flow Dynamics
  • Int'l Joint Research
• [Presentation] Study on impacts of n-butanol addition to n-heptane on PAH formation in a micro flow reactor with a controlled temperature profile with GC measurement (2017)
  • Author(s): Mohd Hafidzal Bin Mohd Hanafi, Hisashi Nakamura, Susumu Hasegawa, Takuya Tezuka, Kaoru Maruta
  • Organizer: 第54回日本伝熱シンポジウム
• [Presentation] Study on sooting limits of n-heptane / n-butanol mixtures in a micro flow reactor with a controlled temperature temperature profile (2016)
  • Author(s): Mohd Hafidzal Bin Mohd Hanafi, Hisashi Nakamura, Takuya Tezuka, Kaoru Maruta
  • Organizer: The 36th International Symposium on Combustion, Work-in-Progress Poster
  • Int'l Joint Research
• [Presentation] Study on sooting process in rich methane and ethane flames using a micro flow reactor with a controlled temperature profile (2016)
  • Author(s): Ajit Kumar Dubey, Takuya Tezuka, Susumu Hasegawa, Hisashi Nakamura, Kaoru Maruta
  • Organizer: The 36th International Symposium on Combustion, Work-in-Progress Poster
  • Int'l Joint Research
• [Presentation] tudy on Sooting Limits and PAH formation of n-Heptane/n-Butanol Mixtures in a Micro Flow Reactor with a Controlled Temperature Profile (2016)
  • Author(s): Mohd Hafidzal Bin Mohd Hanafi, Hisashi Nakamura, Takuya Tezuka, Kaoru Maruta
  • Organizer: Thirteenth International Conference on Flow Dynamics (ICFD2016)
  • Int'l Joint Research
• [Presentation] Sooting Limit of n-heptane/n-butanol Mixture in a Micro Flow Reactor with a Controlled Temperature Profile (2016)
  • Author(s): Mohd Hafidzal Bin Mohd Hanafi, Hisashi Nakamura, Takuya Tezuka, Kaoru Maruta
  • Organizer: 第53回日本伝熱シンポジウム