基于结构导向集总的催化裂化MIP工艺反应动力学模型Ⅰ.模型的建立和验证
发布时间：2018-12-13 02:05
【摘要】：基于结构导向集总方法,设计了包含烃类结构和杂原子结构的22个结构向量,构建了代表催化裂化原料分子组成的14 692种典型分子的结构向量,根据催化裂化反应机理和MIP工艺特征,编制了催化裂化反应规则,构建了反应网络,通过改进的Runge-Kutta法求解,建立了基于结构导向集总的分子尺度的MIP工艺反应动力学模型,通过MIP装置工业数据验证了模型的可靠性。实验结果表明,此模型与传统的催化裂化反应动力学模型相比,在反应网络中引入反应热效应,可更准确地描述提升管反应器中反应温度的变化及其对催化裂化反应过程的影响;模型的可靠性验证实验表明,预测值与工业数据的最大误差在1.0%左右,温度的预测误差不超过2℃。
[Abstract]:Based on the structure-oriented lumped method, 22 structural vectors including hydrocarbon and hetero-atomic structures were designed, and the structural vectors of 14,692 typical molecules representing the molecular composition of FCC feedstocks were constructed. According to the mechanism of catalytic cracking reaction and the characteristics of MIP process, the catalytic cracking reaction rules were worked out, and the reaction network was constructed. Through the improved Runge-Kutta method, the kinetic model of the MIP process reaction was established based on the total molecular scale of the structure guidance set. The reliability of the model is verified by MIP industrial data. The experimental results show that compared with the traditional catalytic cracking reaction kinetic model, the reaction heat effect is introduced into the reaction network. The change of reaction temperature in riser reactor and its influence on catalytic cracking process can be described more accurately. The model reliability verification experiment shows that the maximum error between the predicted value and the industrial data is about 1.0%, and the temperature prediction error is less than 2 鈩，
本文编号：2375675
[Abstract]:Based on the structure-oriented lumped method, 22 structural vectors including hydrocarbon and hetero-atomic structures were designed, and the structural vectors of 14,692 typical molecules representing the molecular composition of FCC feedstocks were constructed. According to the mechanism of catalytic cracking reaction and the characteristics of MIP process, the catalytic cracking reaction rules were worked out, and the reaction network was constructed. Through the improved Runge-Kutta method, the kinetic model of the MIP process reaction was established based on the total molecular scale of the structure guidance set. The reliability of the model is verified by MIP industrial data. The experimental results show that compared with the traditional catalytic cracking reaction kinetic model, the reaction heat effect is introduced into the reaction network. The change of reaction temperature in riser reactor and its influence on catalytic cracking process can be described more accurately. The model reliability verification experiment shows that the maximum error between the predicted value and the industrial data is about 1.0%, and the temperature prediction error is less than 2 鈩，
本文编号：2375675
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