乙烯裂解炉非均匀传热对裂解产物收率的影响

 采用计算流体力学（CFD）的方法，对 KTI 公司GK-V型乙烯裂解炉的炉膛流动传热和炉管的裂解反应进行数值模拟。采用炉管壁面热通量和温度为边界条件的耦合方法进行炉膛与炉管的求解，分析各炉管壁面传热以及管内产物收率的差异。结果表明，数值模拟实验值与工业数据吻合较好；裂解炉炉管在炉膛中的非均匀传热影响了每根炉管管壁的传热以及管内的主要产物收率；计算结果可以为炉管在炉膛中的合理分布、燃烧器的位置安排以及炉膛的尺寸等结构改进提供参考依据。

Effects of Non-Uniform Heat Transfer on Product Yields in Ethylene Cracking Furnace

By means of computational fluid dynamics(CFD),the numerical simulation of the flow and heat transfer in firebox and the reaction in tubes were carried out by establishing a three-dimensional model of a KTI GK-V cracking furnace.The heat flux and temperature at the tube surfaces were used as boundary conditions to analyze the heat transfer through the coils and the main product yields.The numerical simulation results were in agreement with the industrial process.Non-uniform distribution of heat transfer in f...