本论文旨在研究正戊烷和正己烷的常压精馏塔设计问题，为工业生产提供可行的

本论文旨在研究正戊烷和正己烷的常压精馏塔设计问题，为工业生产提供可行的设计方案。<br>首先，通过对正戊烷和正己烷的化学性质、物理性质以及热力学特征进行详细分析，确定出了最佳的操作条件。在此基础上，结合经验公式和NRTL模型对塔板数进行计算。同时，通过查阅文献资料，确定了优化后的操作条件。在HYSYS软件中建立了不同结构的精馏塔模型，并进行仿真。每个模型都经过多次实验和调整，使其能够最大限度地降低能耗、物料流量和提高分离效率。经过多次试验和调整，我们最终得到了一种适用于工业生产的常压精馏塔设计方案。在比较各模型的表现之后，我们发现：以A型针孔板为基础结构、配合特殊填料，并加入四个增高孔位置作为切割点是最优选择。该设计方案具有良好的稳定性，能够实现精度高、物料流量小的分离效果，可以满足实际生产需要。综上所述，本论文通过对正戊烷和正己烷常压精馏塔的详细研究和优化，得出了一种适用于工业生产的设计方案。这项研究对于优化同类系统的设计具有一定的指导意义，同时也为本领域的相关研究提供了有价值的参考。<br><br>关键词：精馏塔模型，热力学特征，针孔板及切割点

This paper aims to study the design of atmospheric distillation columns for n-pentane and n-hexane, and provide feasible design solutions for industrial production.<br>Firstly, the optimal operating conditions were determined through a detailed analysis of the chemical, physical, and thermodynamic properties of n-pentane and n-hexane. On this basis, the number of tower plates is calculated by combining empirical formulas and NRTL model. Meanwhile, the optimized operating conditions were determined through literature review. Models of distillation columns with different structures were established in HYSYS software and simulated. Each model has been tested and adjusted for many times to minimize energy consumption, material flow and improve separation efficiency. After multiple experiments and adjustments, we have finally obtained a design scheme for atmospheric distillation towers suitable for industrial production. After comparing the performance of various models, we found that using the A-type pinhole plate as the basic structure, combined with special fillers, and adding four raised hole positions as cutting points is the optimal choice. The design scheme has good stability, can achieve the separation effect of high precision and small material flow, and can meet the actual production needs. In summary, this paper proposes a design scheme suitable for industrial production through detailed research and optimization of atmospheric distillation columns for n-pentane and n-hexane. This study has certain guiding significance for optimizing the design of similar systems, and also provides valuable reference for relevant research in this field.<br>Keywords: distillation tower model, thermodynamic characteristics, pinhole plate and cutting point

The purpose of this paper is to study the design of atmospheric distillation column for n-pentane and n-hexane, and to provide a feasible design scheme for industrial production.<br> Firstly, the chemical properties, physical properties and thermodynamic characteristics of n-pentane and n-hexane are analyzed in detail, and the optimal operating conditions are determined. On this basis, the number of trays is calculated by combining empirical formula and NRTL model. At the same time, through consulting the literature, the optimized operating conditions were determined. The distillation column models with different structures are established in HYSYS software and simulated. Each model has been tested and adjusted many times, so that it can minimize energy consumption, material flow and improve separation efficiency. After many experiments and adjustments, we finally got a design scheme of atmospheric distillation column suitable for industrial production. After comparing the performance of each model, we found that it is the best choice to take A-type pinhole plate as the basic structure, cooperate with special filler and add four increased hole positions as cutting points. The design scheme has good stability, can achieve the separation effect of high precision and small material flow, and can meet the actual production needs. To sum up, a design scheme suitable for industrial production is obtained through detailed research and optimization of atmospheric distillation columns for n-pentane and n-hexane. This research has certain guiding significance for optimizing the design of similar systems, and also provides valuable reference for related research in this field.<br> <br> Key words: distillation column model, thermodynamic characteristics, pinhole plate and cutting point