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首页> 外文期刊>International Journal of Heat and Fluid Flow >Two-phase pressure drop and flooding characteristics in a horizontal-vertical pulsed sieve-plate column
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Two-phase pressure drop and flooding characteristics in a horizontal-vertical pulsed sieve-plate column

机译：水平-垂直脉冲筛板塔中的两相压降和驱油特性

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摘要

In this paper, an experimental investigation on the two-phase pressure drop has been carried out in a novel class of extractors entitled "horizontal-vertical pulsed sieve-plate column". The liquid-liquid systems used in this work are toluene-water, n-butyl acetate-water and butanol-water. The effects of operating parameters including the dispersed and continuous phases flow rates and pulsation intensity on total pressure drop under and at the flooding points have been studied. It is achieved that the pressure drop is strongly affected by the continuous and dispersed flow rates as well as pulsation intensity. In fact, the column experiences higher pressure drop with an increase in the values of Af, Q(c), and Q(d). The interfacial tension is a physical property which has significant impact on pressure drop. Two theoretical experimental correlations for prediction of pressure drop under and at the flooding in the column, and one correlation for maximum throughput are proposed by using dimensional analysis method with Average Absolute Relative Error (AARE) values of 2.15%, 3.56 and 6.85% respectively. Moreover, a particular approach for preventing flooding in pulsed extraction columns is developed based on evaluation of pressure drop through the column length. (C) 2017 Elsevier Inc. All rights reserved.
机译：在本文中，已经在名为“水平-垂直脉冲筛板塔”的新型萃取器中进行了两相压降的实验研究。用于这项工作的液-液系统是甲苯-水，乙酸正丁酯-水和丁醇-水。研究了包括分散相和连续相流速以及脉动强度在内的运行参数对淹水点以下和淹水点总压降的影响。可以实现，压降受连续和分散的流速以及脉动强度的强烈影响。实际上，随着Af，Q（c）和Q（d）值的增加，色谱柱会经历更高的压降。界面张力是对压降具有重要影响的物理性质。利用尺寸分析方法提出了两种理论上的实验相关性，用于预测柱下和下驱时的压降，以及一种用于最大通量的相关性，其平均绝对相对误差（AARE）值分别为2.15％，3.56和6.85％。此外，根据对整个色谱柱长度的压降评估，开发了一种防止脉冲萃取色谱柱中溢流的特殊方法。 （C）2017 Elsevier Inc.保留所有权利。

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