Break-away from overall reaction model and development of detailed chemical reaction model for pulverized coal particles
Project/Area Number |
16K18354
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Energy engineering
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Research Institution | Tohoku University |
Principal Investigator |
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Project Period (FY) |
2016-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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Keywords | 微粉炭 / チャー / 燃焼 / ガス化 / 物質移動 / 熱移動 / 詳細化学反応 / 反応モデル |
Outline of Final Research Achievements |
Heat and mass transfer with heterogeneous as well as homogeneous reactions around a single particle of the pulverized coal char was numerically analyzed. As a result, the char consumption rate was found to increase with consideration of the CO oxidation reaction. This is, although the CO oxidation reaction which occurs in the vicinity of a particle inhibits Char-O2 oxidation reaction because of oxygen consumption, it promotes the Char-CO2 gasification reaction due to the CO2 production and higher temperature field. Further, using the numerical results for various char particle diameters, gas temperatures, and compositions, the novel model which can estimate the net char consumption rate with not only oxidation but also gasification reactions considering the homogeneous reactions around a char particle which cannot be resolved in the three-dimensional pulverized coal combustion simulations.
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Report
(3 results)
Research Products
(19 results)
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[Journal Article] A Modified Boundary Condition of Velocity for Continuity Equation with Non-uniform Density Distribution at Outlet Boundary Plane2018
Author(s)
Yokoi, Satoki, Matsukawa, Yoshiya, Saito, Yasuhiro, Matsushita, Yohsuke, Aoki, Hideyuki, Malalasekera, Weeratunge
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Journal Title
Journal of Chemical Engineering of Japan
Volume: 印刷中
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] 最近の微粉炭燃焼のモデリング2016
Author(s)
松下洋介, 谷本惇一, 赤尾津翔大, 石母田健悟, 齋藤泰洋, 青木秀之
Organizer
日本学術振興会 石炭・素資源利用技術第148委員会 第157回研究会
Place of Presentation
東京都・千代田区
Related Report
Invited