A thermodynamic equilibrium analysis of the tri-reforming of oxy-combustion exhaust gases based on the minimisation of the Gibbs energy, was performed. To capture the effect of air leakage into the oxy-combustion boiler, two cases were investigated, representing 10 % and 1% combustion air leakage. The effects of temperature, pressure, and the ratio of methane to carbon dioxide (CH₄/CO₂) on the tri-reforming of the exhaust gases was studied. The domain of the practical operating regime for the tri-reforming of exhaust gases which is circumscribed by the maximum operating temperature, minimum CO₂ conversion and zero-coke equilibrium was identified. In addition, three reactions (steam reforming, dry reforming and reverse water gas shift) were identified to be dominating in the temperature domain above the zero-coke equilibrium temperature. Within the boundaries of the practical operating regime, the tri-reforming of coal oxy-combustion exhaust gas results in more than three times the net conversion of CO₂/kg CH₄, when compared to the tri-reforming of conventional coal combustion exhaust gas.

基于吉布斯能量的最小化，对氧燃烧废气的三重整进行了热力学平衡分析。为了捕获漏气进入氧气燃烧锅炉的影响，调查了两种情况，分别为10％和1％的燃烧漏气。研究了温度，压力以及甲烷与二氧化碳的比例（CH ₄ / CO ₂）对废气三重转化的影响。废气三重整的实际运行方式范围由最高运行温度，最低CO _2限制确定了转化率和零焦平衡。另外，确定了在零焦平衡温度以上的温度域中占主导地位的三个反应（蒸汽重整，干重整和水煤气变换）。在实际操作方案的范围内，与常规煤燃烧废气的三重转化相比，煤氧燃烧废气的三重转化产生的CO ₂ / kg CH ₄净转化率超过三倍。。