Characterization of High-Performance Structured Packing
Characterization of High-Performance Structured Packing
复制标题
高性能规整填料的表征
DOI：
10.1205/026387603321158221
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发表时间：
2003
影响因子：
3.9
通讯作者：
R. Melcher
中科院分区：
文献类型：
--
作者：
L. Fischer;U. Bühlmann;R. Melcher
适用于精馏领域的塔填料，其主要特点是每米理论级数NTSM （m -1）、每高比压降Δ p （mbarm -1或Pam -1）和容量限制。利用平行板内干气体流动的简单模型（狭缝流动），导出了一组无量纲数。这些数字是无因次的，并且能够描述各种填料类型的测量值以及它们最近仅考虑特定表面的改进性能。这些数字描述了压降、容量和表面效率。此外，还提出了一种方法，将描述包装性能的最重要标准组合成一个特征数，以便在一个图中找到描述。给出了来自不同包装类型的值的例子。包括“高性能”填料的最新发展。绘制这些值可以外推到“预期的”新包装类型。
Column packings applicable to the field of rectification are mainly characterized by their number of theoretical stages per meter NTSM (m –1 ), specific pressure drop per height Δ p (mbarm –1 or Pam –1 ), and capacity limits. A set of dimensionless numbers are derived by means of a simple model of dry gas flow within parallel plates (slit flow). Those numbers are dimensionless and able to describe measured values from various packing types and their recent improved performance only taking into account the specific surface. These numbers describe pressure drop, capacity and surface efficiency. Furthermore an approach is presented where the most important criteria describing packing performance are combined into one characteristic number to find a description within only one diagram. Examples of values from different packing types are presented. The recent developments of the ‘high-performance’ packings are included. Plotting these values allow extrapolation to ‘expected’ new packing types.