Abstract

In this paper, we report the results of studying the combustion characteristics of fuels containing a hydrogen–hydrocarbon (C₁–C₆, as in CH₄, C₂H₆, C₃H₈, C₄H₁₀, C₅H₁₂, and C₆H₁₄) mixture with a fuel fraction of 0.6–1.2 in a mixture with air above the palladium surface at a total pressure of 1–2 atm. The propagation features of the flame front in mixed fuels are revealed, and the temperature dependences of the ignition limit over the palladium surface are determined. The observed separation of the CH and Na emission bands in time during the combustion of the 30% propane + 70% H₂ + air mixture (the fuel fraction in the mixture with air is unity) was established to be caused by the occurrence of hydrodynamic instability of the flame when it touches the end of a cylindrical reactor.

中文翻译：

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1-2 Atm上钯表面上的氢-碳氢化合物（C 1 -C 6）-空气混合物着火

摘要

在本文中，我们报告了研究含氢-碳氢化合物（C ₁ -C ₆，如CH ₄，C ₂ H ₆，C ₃ H ₈，C ₄ H ₁₀，C ₅ H ₁₂和C ₆ H ₁₄）混合燃料的比例为0.6–1.2，与钯表面上方的空气混合，总压力为1-2 atm。揭示了火焰前沿在混合燃料中的传播特征，并确定了点火极限在钯表面上的温度依赖性。建立了在30％丙烷+ 70％H ₂ +空气混合物（与空气混合的燃料比例统一）燃烧过程中CH和Na发射带在时间上的观察到的分离，这是由流体动力的发生引起的火焰接触圆柱形反应器末端时不稳定。