【摘要】 该文根据试验结果拟合了碳转化率和甲烷产率动力学经验关系式,结合物料平衡、能量平衡和化学平衡,建立了动力学修正的循环流化床煤气化平衡模型。在与试验相同的条件下,进行了循环流化床煤气化模拟计算,模拟计算结果和试验结果比较吻合。在此基础上,还就空气加入量、蒸汽加入量及加煤速率对床温、煤气组成、煤气热值、碳转化率和气化效率的影响做了预测和分析。更多还原

【Abstract】 A kinetic modified equilibrium model of coal gasification in a circulating fluidized bed is proposed in this paper.The model is based on mass balance,heat balance,chemical equilibrium as well as the kinetically empirical correlations of the carbon conversion and the yield of CH4 obtained from experimental data.Predictions of the model compare reasonably well with the obtained experimental data in the same conditions.The effects of the feed rate of air,steam and coal on bed temperature,gas composition,calorific value,carbon conversion and gasification efficiency are predicted and analyzed with the model.更多还原