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首页> 外文会议>ASME(American Society of Mechanical Engineers) International Mechanical Engineering Congress: Advanced Energy Systems Division; 20031115-20031121; Washington,DC; US >INFLUENCE OF THE CROSS SECTIONAL AREA OF A SEPARATION COLUMN, USING STRUCTURED PACKING
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INFLUENCE OF THE CROSS SECTIONAL AREA OF A SEPARATION COLUMN, USING STRUCTURED PACKING

机译：结构填料对分离柱横截面的影响

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摘要

In order to determine the dimension of a separation column, hydrodynamic and mass transfer models are necessary to evaluate the pressure drop and the height of the global mass transfer unit, respectively. Those parameters are a function of the cross sectional area of the column. The present work evaluates the dependency of the pressure drop and height of the global transfer unit with respect to the cross sectional area of the column, using an absorption column with high efficiency structured packing, in order to recover SO_2 in the form of NaHSO_3, as an example. An optimization was done applying Two Film model which is based on the number of global mass transfer units of both gas and liquid, involving the separation efficiency in terms of the height of a global transfer unit. Structured packing, geometrically heaped in a separation column, has been achieving wider acceptance in the separation processes due to their geometric characteristics that allow them to have greater efficiency in the separation processes. Three different structured packings were evaluated in this work. The results show how ININ packing is one of the packings does the best work having the highest separation efficiency because it has the lowest height of the global mass transfer unit and Mellapak packing has the largest capacity because it manages the largest liquid and gas flows. An analysis is done with respect to the pressure drop through the system for all packings considered, and a discussion is presented for each hydrodynamic and mass transfer parameter studied.
机译：为了确定分离塔的尺寸，必须使用流体动力学模型和传质模型来分别评估整体质量传递单元的压降和高度。这些参数是色谱柱横截面积的函数。本工作使用高效结构填料的吸收塔，以NaHSO_3的形式回收SO_2，评估整体转移单元的压降和高度相对于塔横截面积的依赖性，从而回收NaHSO_3形式的SO_2。一个例子。应用了两层膜模型进行了优化，该模型基于气体和液体的整体传质单元的数量，其中涉及以整体传递单元的高度为单位的分离效率。几何堆积在分离塔中的结构填料，由于其几何特性，使其在分离过程中具有更高的效率，已在分离过程中获得了更广泛的接受。在这项工作中评估了三种不同的规整填料。结果表明，ININ填料是填料中表现最好的一种，具有最高的分离效率，因为它具有全球传质单元最低的高度，而Mellapak填料则具有最大的容量，因为它管理着最大的液体和气体流量。针对所考虑的所有填料通过系统的压降进行了分析，并对研究的每个流体动力学和传质参数进行了讨论。

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