Development of reduced reaction mechanisms for hydrogen and methanol diffusion flames

Biofuels, such as biohydrogen, biomethanol, bioethanol and biodiesel may be the future of energy for transportation. The methanol can be used directly for powering Otto engines or fuel cells; it is commonly used in biodiesel production for its reactivity. Biohydrogen is a replacement for fossil and biorenewable liquid fuels. Based on a mechanism composed by 20 reversible elementary reactions among 8 reactive species, we propose a reduction process to obtain the mechanism of hydrogen, and from 129 reversible elementary reactions among 23 reactive species, we obtain a reduced mechanism for the methanol. Therefore, the aim of this work is the development of an algorithm consisting of 7 steps, which eliminates the fastest reactions of the reaction mechanism since the slowest reactions are rate-determining. The main advantage of the strategy is the decrease of the work needed to solve the system of chemical equations.