Abstract

This paper presents the results of an experimental study of the formation of large-scale non-uniformity of liquid flow on a RSR metal random packing of 0.47 m in diameter and a Sulzer 500X structured packing of 0.6 m in diameter. The experiments on the RSR packing were carried out with water without vapor flow for the superficial velocity of the liquid varying as \(3\cdot 10^{-3}< L_{0}<12\cdot 10^{-3}\) m/s. The experiments on the Sulzer 500X structured packing were conducted in a distillation column with separation of R114/R21 freon mixture under total reflux conditions. The superficial velocity of the liquid varied in the range \(3.5 \cdot 10^{-3}< L_{0}<6.7\cdot 10^{-3}\) m/s; the vapor load varied in the range 1.3 < F-factor < 2 Pa^0.5. It is shown that the amount of liquid retained on the column wall at the outlet from the Sulzer 500X packing practically does not change in the investigated range of operating parameters. For the superficial velocity of the liquid varying as \(3.5\cdot 10^{-3}< L_{0}<5\cdot 10^{-3}\) m/s, the liquid maldistribution factor for the Sulzer 500X packing is three times less than that for the RSR random packing. The resulting experimental data will help to construct and verify models for calculating the efficiency of separation of mixtures on packings in industrial column apparatus with quantitative allowance for the effect of the scale factor, which is associated with large-scale non-uniformity of local flow parameters.

中文翻译：

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Sulzer 500X 规整填料和 Raschig Super-Ring 随机填料中液体流动分布不均的实验研究

摘要

本文介绍了在直径为 0.47 m 的 RSR 金属无规填料和直径为 0.6 m 的 Sulzer 500X 规整填料上形成大规模液体流动不均匀性的实验研究结果。RSR填料的实验是在没有蒸汽流的情况下用水进行的，液体的表观速度变化为 \(3\cdot 10^{-3}< L_{0}<12\cdot 10^{-3}\ ) 米/秒。Sulzer 500X 规整填料的实验在蒸馏塔中进行，在全回流条件下分离 R114/R21 氟利昂混合物。液体的表观速度在 \(3.5 \cdot 10^{-3}< L_{0}<6.7\cdot 10^{-3}\)  m/s 范围内变化；蒸汽负荷在 1.3 < F-factor < 2 Pa ^0.5范围内变化. 结果表明，在所研究的操作参数范围内，保留在苏尔寿 500X 填料出口处塔壁上的液体量实际上没有变化。对于变化为\(3.5\cdot 10^{-3}< L_{0}<5\cdot 10^{-3}\)  m/s 的液体表观速度，  Sulzer 500X 填料的液体分布不均系数是 RSR 随机包装的三倍。所得实验数据将有助于构建和验证模型，用于计算工业塔装置中填料上混合物的分离效率，并定量考虑与局部流动参数的大规模非均匀性相关的比例因子的影响.