Study on ignition delay of multi-component syngas using shock tube (PDF)
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Study on ignition delay of multi-component syngas using shock tube (PDF)
- 发表刊物：
- Canadian J Chem Eng
- 摘要：
- Ignition delays of four typical syngas mixtures were investigated using both experimental and simulated methods. Shock tube experiments were conducted behind the reflected shock waves at temperature ranges from 870 to 1350 K, pressures of 0.2, 1.0 and 2.0 MPa. Six available kinetic models were evaluated by comparing to the new ignition delay data obtained. NUIG C3 model was generally in good agreement with the experimental results. Effect of the pressure on ignition delay of all four syngas mixtures was similar to that of hydrogen. The promoting and inhibiting ignition were experimentally observed at high and moderate temperatures, respectively. Sensitivity analyses were conducted at different temperatures and pressures to identify the dominant elementary reactions in ignition process of the syngas. Results indicated that ignition delay was generally most sensitive to chain branching reaction H + O2 = O + OH at both high and low temperature. Decomposition reaction H2O (+M) = H + OH (+M) was of importance for the syngas with relative inert gas CO2 and N2 at high temperature. The reaction CO + OH = CO2 + H involving CO kinetic dominated the ignition at high temperature for the syngas with high CO level. The inhibiting effect of pressure was attributed to the decrease of sensitivity of the reactions H + O2 = O + OH and O + H2 = H + OH and the increase of sensitivity of the reaction H + O2 (+M) = HO2 (+M) at moderate -low temperature.
- 合写作者：
- Thi LD, Zhang YJ, Fu J, Huang ZH, Zhang Y
- 卷号：
- 2014, 92(5): 861-870
- 页面范围：
- 861-870
- 是否译文：
- 否
- 发表时间：
- 2014-04-10