微粉炭の燃焼特性に関する合理的推算法

煤粉燃烧特性的合理估算方法

• 批准号: 61550689
• 负责人: 大谷 茂盛
• 金额: $ 0.9万
• 依托单位: Tohoku 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: 1986
• 资助国家: 日本
• 起止时间: 1986 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61550689/
• 关键词: 微粉炭; 燃焼; 数値解析; モデル化; 層流; ふく射伝熱; 窒素酸化物; 燃焼速度

1.研究実施計画(1)同一燃焼条件下で微粉炭の燃焼ガス温度分布・ガス組成の石炭種による相違を検討する。(2)層流燃焼炉において流動・揮発化・燃焼過程を定式化し、微粉炭燃焼シミューレーション法を開発する。(3)開発した解析法を他所の燃焼炉による実験結果と比較・検討する。2.研究成果 (1)微粉炭の燃焼実験(内径300X長さ2500mmの層流炉)により4種の石炭を用いて燃焼特性の測定を行い、石炭種毎の燃焼解析が可能となった、(2)微粉炭の燃焼シミュレーションにおいては、揮発化過程において石炭種の特性を区別し得る並行反応モデルを用い、チャー燃焼も同時に生じるとし次の様な結果を得た;イ.ふく射伝熱においては粒子群と壁面間よりも粒子群と粒子群間(フラックス法)を考慮し、壁面からの熱損失は内壁よりも外壁温度を一定とし、粒径分布は可及的に細分し数値解析した所、実験値と良好に一致した。ロ.【NO_x】については、Thermal 【NO_x】よりもFuel 【NO_x】が大きく影響し、Fenimoreの方法に従えば実験と適合した。(3)本シミュレーション法を他の機関の燃焼実験結果にも適用し、その有効性を確認した。3.設備・備品の利用状況 以上の燃焼シミュレーションにおいては、微粉炭の流速及び位置,燃焼反応速度,ふく射伝熱量が粒径分布毎に行う必要があり、計算量も多く、購入した音響カプラ並びにプリンタ等多用し、解析を行っている。

1. The research and implementation plan (1) The combustion temperature distribution of pulverized coal under the same combustion conditions, and the phase difference between the carbon species and the composition are discussed. (2)Flow, evolution and combustion process in laminar combustion furnace are formulated, and the combustion process of pulverized carbon is developed. (3)Comparison and discussion of the results of the open analysis method for other combustion furnaces 2. Research Results (1) Combustion Practice of Micronized Carbon (Laminar flow furnace with inner diameter of 300X length of 2500mm) The determination of combustion characteristics of four kinds of carbonitride and its combustion analysis are possible;(2) The combustion characteristics of fine carbon and its decomposition process are distinguished;(3) The combustion characteristics of carbonitride and its combustion are simultaneously generated;(4) The combustion characteristics of fine carbon and its combustion characteristics are distinguished;(5) The combustion characteristics of fine carbon and its combustion characteristics are distinguished;(6) The combustion characteristics of fine carbon and its combustion characteristics are distinguished;(7) The combustion characteristics of fine carbon and its combustion characteristics are distinguished;(8) The combustion characteristics of fine carbon and its combustion characteristics are distinguished;(9) The combustion characteristics of fine carbon and its combustion characteristics are distinguished. The particle size distribution of the particle size distribution can be divided into several parts, and the particle size distribution can be divided into several parts.ロ. [NO_x], Thermal [NO_x] Fuel [NO_x], Fenimore's method (3)This method is applicable to the combustion process of other organs, and its effectiveness is confirmed. 3. The utilization status of equipment and spare parts, such as the combustion system, the flow rate and position of the pulverized carbon, the combustion reaction speed, the radiant heat, and the particle size distribution, are all necessary, and the calculation amount is too large. There are many uses such as purchasing audio equipment and accessories, and analyzing them.

项目成果

佐藤昌広,梁川甲牛,三浦隆利,深井潤,大谷茂盛,村山孝司,松岡秀一: 第24回燃焼シンポジウム前刷集. 181-183 (1986)

Masahiro Sato、Koushi Yanakawa、Takatoshi Miura、Jun Fukai、Shigemori Otani、Takashi Murayama、Shuichi Matsuoka：第 24 届燃烧研讨会预印本集 181-183（1986）。