乙烯生产装置中急冷锅炉结焦过程的数学模型与工业模拟  

Mathematical Model and Industrial Simulation of Coking Process in Transfer Line Exchanger of Ethylene Plant

作　　者：李和平[1] 戚俊清[2] 朱廷哲 邹仁[3] 李立新[4] 娄强昆[3] 

机构地区：[1]郑州工程学院化学化工系,河南郑州450052 [2]郑州轻工业学院,河南郑州450002 [3]河北工业大学,天津300130 [4]茂名石油化工公司,广东茂名525000

出　　处：《石油化工》2000年第8期600-603,共4页Petrochemical Technology

基　　金：国家自然科学基金资助项目

摘　　要：试验研究了乙烯生产装置中急冷锅炉 (TLE)的结焦过程 ,提出轻柴油裂解生产乙烯时TLE结焦机理为传质、冷凝 -表面缩聚反应机理 ,并证实了在TLE结焦过程中存在着特定的转折温度。当壁面温度高于转折温度时 ,传质、冷凝过程为控制步骤 ;反之 ,表面缩聚反应过程为控制步骤。根据上述结焦机理建立了TLE结焦过程的数学模型 ,并对工业装置进行了模拟 ,模拟结果与工业实测数据吻合。A set of micro-system was employed for investigating the coking process in a transfer line exchanger (TLE) for quenching pyrolysis reaction of ethylene production.It was developed from the experiment that the coking mechanism in TLE involved mass transfer and condensation-surface polycondensation reactions.The results show the existence of a characteristic transition temperature of coking process in TLE.Mass transfer and condensation process is the controlling step of the coking process when the surface temperature is higher than the transition point.Otherwise,surface-polycondensation reaction is the controlling step.Accordingly,the authors propose a mathematical model for the coking process in TLE for industrial simulation.The simulation results agree with the observed industrial data. [

关 键 词：结焦 数学模型 急冷锅炉 裂解 乙烯装置 

分 类 号：TQ221.211[化学工程—有机化工]