利用催化裂化试验数据，通过模型方程推导和参数估计，分别建立了再生剂碳含量对转化率、焦炭产率，裂化气体产率和汽油产率影响的数学模型，并用所建模型对催化裂化产品分布进行预测分析。模型预测结果表明，随再生剂碳含量提高，转化率、焦炭和裂化气体产率和选择性均不断降低，汽油选择性逐渐提高，汽油产率存在一个极大值。 Based on the experimental data of FCCU and mathematical model derivation and parameter estimation, the mathematical models of the influence of the carbon content of the regenerant on the conversion rate, coke yield, cracking gas yield and gasoline yield were established respectively. The catalytic cracking products Distribution for predictive analysis. The model predictions show that with the increase of the carbon content of the regenerant, the conversion rate, the yield and selectivity of coke and cracked gas decrease, the gasoline selectivity gradually increases, and the gasoline yield has a maximum value.