This study aims at study the dynamical oxygen-lean combustion behaviors of coal in a multi-gas concomitant atmosphere. Two coal samples from Bulianta and Yuwu collieries were collected for simultaneous thermal analysis in O₂/N₂ (21 vol%/79 vol%) and O₂/N₂/CO₂ (15 vol%/80 vol%/5 vol%) atmospheres. Based on the TG-DTG curves, five evolution stages were analyzed. A delay phenomenon occurred for coal lean-oxygen combustion in O₂/N₂/CO₂, which was obvious at IV stage with a high staged temperature and a wide temperature range. Furthermore, the kinetic parameters were obtained after determining the most probable mechanism function, showing an increased apparent activation energy at III stage and a decreased one at IV stage in O₂/N₂/CO₂ compared with in O₂/N₂, which indicated that the low heat conduction coefficient of CO₂ played a dominant role on these changes. The study also showed the relationship between the thermal formation rate and reaction rate constant.

这项研究旨在研究煤在多种气体伴随气氛中的贫氧动态燃烧行为。收集了布里亚塔和玉雾煤矿的两个煤样，用于同时在O ₂ / N ₂（21 vol％/ 79 vol％）和O ₂ / N ₂ / CO ₂（15 vol％/ 80 vol％/ 5 vol％）中进行热分析。）的气氛。基于TG-DTG曲线，分析了五个演化阶段。O ₂ / N ₂ / CO _2中贫煤氧气燃烧发生延迟现象，在IV阶段具有较高的阶段温度和较宽的温度范围，这一点很明显。此外，在确定最可能的机制功能后获得的动力学参数，示出了在III期增加的表观活化能和一个为O在IV级减少一个₂ / N ₂ / CO ₂与为O相比₂ / N ₂，其表明CO ₂的低导热系数在这些变化中起主要作用。研究还显示了热形成速率和反应速率常数之间的关系。