Modeling combustion of the gas from oxygen underground coal gasification in the jet stirred reactor

摘要

The paper presents modeling results of gas composition with CO/H_2/CH_4/CO_2/O_2/H_2O/N_2 as well as methane combustion, in the temperature range 1100 ÷ 1600 K and at air to fuel ratio 1.35. The substrata composition simulated the gas from oxygen Underground Coal Gasification (UCG). The jet stirred reactor (JSR) was used to kinetic investigations. The GRI 3.0 reaction mechanisms of methane combustion were tested. The CHEMKIN-CFD was used to the numerical tests. The results confirmed earlier observation that the components of gaseous fuels influence the temperature in the reaction zone. Despite of hydrogen presence in the investigated fuel the temperature decreased in the reaction zone by 70 K. It could be explained by the impact of water vapour and carbon dioxide.