石炭ガス化ガスを模擬した水素混合気の層流および乱流燃焼特性に及ぼす二酸化炭素希釈の影響

Translated title of the contribution: Effects of CO2 Dilution on Laminar and Turbulent Combustion of Hydrogen Mixtures Simulating Coal Gasification Gas

角 邦洋, 中原 崇志, 竹尾 友宏, 永野 幸秀, 北川 敏明

Research output: Contribution to journalArticlepeer-review

Abstract

Combustion properties of coal gasification gas with CO<SUB>2</SUB> dilution were investigated for a newly proposed IGCC power generation system with CO<SUB>2</SUB> capture. In this system, the gasification gas is burned under high CO<SUB>2</SUB> concentration atmosphere. In order to clarify the combustion properties of the gasification gas under such atmosphere, the laminar and turbulent burning velocities were investigated for outwardly propagating stoichiometric H<SUB>2</SUB>/O<SUB>2</SUB>/CO<SUB>2</SUB> flames at the mixture pressures of 0.10 to 0.50MPa, comparing them with those of H<SUB>2</SUB>/O<SUB>2</SUB>/N<SUB>2</SUB> flames. The unstretched laminar burning velocities of H<SUB>2</SUB>/O<SUB>2</SUB>/CO<SUB>2</SUB> flames were smaller than those of H<SUB>2</SUB>/O<SUB>2</SUB>/N<SUB>2</SUB> flames. The ratios of the turbulent burning velocity at the flame radius 30mm, u<SUB>tn(30mm)</SUB> to the unstretched laminar burning velocity were found to be larger than those of H<SUB>2</SUB>/O<SUB>2</SUB>/N<SUB>2</SUB> flames at the same turbulence intensity. Increase in the turbulence Karlovitz number and decrease in the Lewis number by the CO<SUB>2</SUB> dilution might cause the increase in the ratio of the turbulent burning velocity to unstretched laminar one of H<SUB>2</SUB>/O<SUB>2</SUB>/CO<SUB>2</SUB> flames.
Translated title of the contributionEffects of CO2 Dilution on Laminar and Turbulent Combustion of Hydrogen Mixtures Simulating Coal Gasification Gas
Original languageJapanese
Pages (from-to)45-50
Number of pages6
JournalNenryo Kyokai-Shi/Journal of the Fuel Society of Japan
Volume90
Issue number1
DOIs
Publication statusPublished - 2011

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