十七集总催化重整反应动力学模型研究(Ⅱ)——工业装置模拟

17-Lumped Kinetic Model for Naphtha Catalytic Reforming(Ⅱ) --Simulation of Industrial Process

开发成功的动力学模型能广泛应用于工业装置的工艺设计和优化生产操作 ,具有重要的实用价值。在已经建立的十七集总催化重整反应动力学模型基础上 ,报道模型参数估计和工业过程模拟的结果。针对一半再生式催化重整反应装置 ,建立了轴向和径向重整反应器的数学模型 ,并以工业装置实际生产操作数据 ,采用区域约束法和Marquardt法相结合的数值方法 ,分步优化估计了模型动力学参数。编制的计算机模拟计算软件能够预测计算装置生产工况 ,得到碳六至碳九的芳烃产率分布和产品烃组成 ,并预测重整汽油辛烷值和反应器温降 ,计算结果的偏差分别小于 5℃和 1.

It could be of high value to apply the successfully developed kinetic model of naphtha catalytic reforming broadly into process design and plant production optimization. Based on the formerly proposed seventeen lump reaction network and kinetic model, the results of parameter estimation and industrial process simulation were reported. To a semi-regenerated commercial naphtha catalytic reformer, the mathematic models for axial and redial reformer reactors were established. The kinetic parameters were estimated and optimized stepwise by a combined procedure of restrained range and Marquardt's method with a set of plant production data. Computer software for process simulation can be used to predict C 6 to C 9 aromatic yield distribution and hydrocarbon composition of reformatted gasoline under varied operating conditions, and to calculate the product gasoline octane and temperature profiles in the reactors with the maximum deviations between calculated results and practical value less than 5 ℃ and 1.5 RON respectively.