基于表观动力学灰膜缩核模型,本文发展并利用耦合的灰膜与灰渗透本征动力学模型,详细研究焦炭颗粒燃烧特性。氧化反应与气化反应耦合能够高精度预测煤焦颗粒燃烧特性。随灰膜形成比例下降,焦炭颗粒燃烧温度升高,碳燃尽时间缩短;当碳转化率低于80%时,碳转化率主要受灰膜影响,灰渗透影响甚微;但当碳转化率大于80%时,灰膜与灰渗透同时起作用。 Based on the apparent kinetic gray shrinkage model, this paper develops and utilizes the coupled gray membrane and ash penetration intrinsic kinetic model to study the combustion characteristics of coke particles in detail. The coupling of oxidation reaction and gasification reaction can predict the combustion characteristics of coal char particles with high accuracy. As the proportion of gray film formed decreased, the combustion temperature of coke particles increased and the carbon burnout time shortened. When the carbon conversion rate was less than 80%, the carbon conversion rate was mainly affected by the ash film with little effect of ash penetration. However, Greater than 80%, gray film and ash infiltration at the same time play a role.