### 抄録

Combustion properties of coal gasification gas with CO _{2}dilution were investigated for a newly proposed IGCC power generation system with CO _{2} capture. In this system, the gasification gas was burned under high CO _{2} concentration atmosphere. In order to clarify the properties of the flames under such atmosphere, the laminar and turbulent burning velocities were investigated for outwardly propagating stoichiometric H _{2}/O _{2}/CO _{2} and H _{2}/O _{2}/N _{2} flames under the two conditions, 1: the same amount of diluent of CO _{2} or N _{2}, 2: the constant flame temperature irrespective of diluents. Under the condition1 of the same amount of diluents, the unstretched laminar burning velocities, u _{l} of CO _{2} diluted flames were smaller than those of N _{2} diluted flames. The ratios of the turbulent burning velocity at the flame radius 30mm, u _{tn(30mm)}to u _{l} of the CO _{2} diluted flames were found to be larger than those of N _{2} diluted flames. Under the condition2 of the constant flame temperature, it was set to 1300, 1500, 1700, and 2135 degrees Celsius. At the flame temperatures except for 2135 degrees Celsius, u _{l} of CO _{2} diluted flames were slightly smaller than those of N _{2} diluted flames. The ratios, u _{tn(30mm)} / u _{l}of CO _{2} diluted flames were larger than those of N _{2} diluted flames. Increase in the turbulence Karlovitz number and decrease in the Markstein number by the CO _{2} dilution might cause the increase in u _{tn(30mm)} / u _{l} of CO _{2} diluted flames in both conditions.

元の言語 | 英語 |
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ホスト出版物のタイトル | ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011 |

出版物ステータス | 出版済み - 12 1 2011 |

イベント | ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011 - Honolulu, HI, 米国 継続期間: 3 13 2011 → 3 17 2011 |

### 出版物シリーズ

名前 | ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011 |
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### その他

その他 | ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011 |
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国 | 米国 |

市 | Honolulu, HI |

期間 | 3/13/11 → 3/17/11 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Energy Engineering and Power Technology

### これを引用

_{2}and CO

_{2}dilutions. ：

*ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011*(ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011).

**Effects of diluent gases on combustion of coal gasification gas : Comparison between N _{2}and CO _{2} dilutions.** / Nagano, Yukihide; Kado, Kunihiro; Takeo, Tomohiro; Miki, Yukito; Kitagawa, Toshiaki.

研究成果: 著書/レポートタイプへの貢献 › 会議での発言

_{2}and CO

_{2}dilutions. ：

*ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011.*ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011, ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011, Honolulu, HI, 米国, 3/13/11.

_{2}and CO

_{2}dilutions. ： ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011. 2011. (ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011).

}

TY - GEN

T1 - Effects of diluent gases on combustion of coal gasification gas

T2 - Comparison between N 2and CO 2 dilutions

AU - Nagano, Yukihide

AU - Kado, Kunihiro

AU - Takeo, Tomohiro

AU - Miki, Yukito

AU - Kitagawa, Toshiaki

PY - 2011/12/1

Y1 - 2011/12/1

N2 - Combustion properties of coal gasification gas with CO 2dilution were investigated for a newly proposed IGCC power generation system with CO 2 capture. In this system, the gasification gas was burned under high CO 2 concentration atmosphere. In order to clarify the properties of the flames under such atmosphere, the laminar and turbulent burning velocities were investigated for outwardly propagating stoichiometric H 2/O 2/CO 2 and H 2/O 2/N 2 flames under the two conditions, 1: the same amount of diluent of CO 2 or N 2, 2: the constant flame temperature irrespective of diluents. Under the condition1 of the same amount of diluents, the unstretched laminar burning velocities, u l of CO 2 diluted flames were smaller than those of N 2 diluted flames. The ratios of the turbulent burning velocity at the flame radius 30mm, u tn(30mm)to u l of the CO 2 diluted flames were found to be larger than those of N 2 diluted flames. Under the condition2 of the constant flame temperature, it was set to 1300, 1500, 1700, and 2135 degrees Celsius. At the flame temperatures except for 2135 degrees Celsius, u l of CO 2 diluted flames were slightly smaller than those of N 2 diluted flames. The ratios, u tn(30mm) / u lof CO 2 diluted flames were larger than those of N 2 diluted flames. Increase in the turbulence Karlovitz number and decrease in the Markstein number by the CO 2 dilution might cause the increase in u tn(30mm) / u l of CO 2 diluted flames in both conditions.

AB - Combustion properties of coal gasification gas with CO 2dilution were investigated for a newly proposed IGCC power generation system with CO 2 capture. In this system, the gasification gas was burned under high CO 2 concentration atmosphere. In order to clarify the properties of the flames under such atmosphere, the laminar and turbulent burning velocities were investigated for outwardly propagating stoichiometric H 2/O 2/CO 2 and H 2/O 2/N 2 flames under the two conditions, 1: the same amount of diluent of CO 2 or N 2, 2: the constant flame temperature irrespective of diluents. Under the condition1 of the same amount of diluents, the unstretched laminar burning velocities, u l of CO 2 diluted flames were smaller than those of N 2 diluted flames. The ratios of the turbulent burning velocity at the flame radius 30mm, u tn(30mm)to u l of the CO 2 diluted flames were found to be larger than those of N 2 diluted flames. Under the condition2 of the constant flame temperature, it was set to 1300, 1500, 1700, and 2135 degrees Celsius. At the flame temperatures except for 2135 degrees Celsius, u l of CO 2 diluted flames were slightly smaller than those of N 2 diluted flames. The ratios, u tn(30mm) / u lof CO 2 diluted flames were larger than those of N 2 diluted flames. Increase in the turbulence Karlovitz number and decrease in the Markstein number by the CO 2 dilution might cause the increase in u tn(30mm) / u l of CO 2 diluted flames in both conditions.

UR - http://www.scopus.com/inward/record.url?scp=84860895944&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84860895944&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84860895944

SN - 9780791838921

T3 - ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011

BT - ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011

ER -