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Designing a packed dividing wall column for an aromatics processing plant

机译:设计用于芳烃加工厂的填充式分隔壁塔

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This paper introduces a comprehensive design method assembled usingfacilities of a commercial software package that, complemented by Excelprograms containing own column dimensioning and well established costestimation procedures, enables proper assessment of industrial viability of adividing wall column (DWC) equipped with corrugated sheet structuredpackings. The heart of the performance simulation tool is a detailed fourcolumnsmodel that in conjunction with a simple, theoretically founded shortcutmethod providing reliable initial values for liquid and vapor splits, and asimple but effective objective function for design optimality indication allowsdetermination of the adequate stage and reflux requirement of a DWC. Theproposed dimensioning method enables a close approach in accuracy to thatrequired at the stage of conceptual design for purposes of making a bid by anequipment manufacturer. Compared to a two-columns-in-series configuration,as employed in aromatics processing complex within a refinery, a DWCequipped with state of the art structured packing and auxiliary internalsrequires approximately 40 % less energy to deliver three fractions at requiredproduct specifications. This, accompanied by a saving of 45 % based on totalannualized costs, indicates that implementing a DWC could lead to significantincrease in profitability of aromatics processing plants.
机译:本文介绍了一种综合的设计方法,使用 商业软件包的功能,并由Excel进行补充 包含自己的列尺寸和确定的成本的程序 估算程序,可以对一个工厂的工业可行性进行适当的评估 装有波纹板结构的分隔壁塔(DWC) 包装。性能模拟工具的核心是详细的四列 模型,结合简单的,理论上建立的快捷方式 提供可靠的液体和蒸气分流初始值的方法,以及 简单但有效的目标函数,可用于设计最佳性指示 确定DWC的适当阶段和回流要求。这 提议的尺寸标注方法可以使精度接近于 在概念设计阶段必需的,以便由投标人进行投标 设备制造商。与串联两列配置相比, 用于炼油厂DWC中的芳烃加工厂 配备最先进的规整填料和辅助内件 需要大约40%的能量才能按要求输送三部分 产品规格。与此相伴的是,总共节省了45% 年化成本,表明实施DWC可能会导致 增加了芳烃加工厂的盈利能力。

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