Liquid holdup of gas–liquid two-phase flow in micro-packed beds reactors

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL

AIChE Journal Pub Date : 2024-11-13 DOI:10.1002/aic.18636

Keyi Chen, Yangcheng Lu

引用次数: 0

Abstract

Liquid holdup is a crucial factor in the study of hydrodynamic behaviors in the micro-packed bed reactor (μPBR). In this work, the values of liquid holdup are studied with the weighing method with good accuracy. The packed bed is a tube made of stainless steel with a length of 20 cm and an inner diameter of 4 mm, packed with 177–250 μm or 350–500 μm microbeads. The gas and liquid flow rates vary from 5 to 20 mL/min and 0.25 to 2 mL/min, respectively. A new hypothesis of the flow regions is proposed based on the experimental results. Furthermore, a new set of empirical correlation is built with great agreement, particularly for viscous liquids, whose viscosity ranges from 0.99 to 5.98 mPa·s, showing an atypical tendency.

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微型堆积床反应器中气液两相流的液体截留量

液体滞留是研究微填料床反应器（μPBR）流体力学行为的一个关键因素。本研究采用称重法对液体滞留值进行了精确研究。填料床是一个长 20 厘米、内径 4 毫米的不锈钢管，内填 177-250 微米或 350-500 微米的微珠。气体和液体流速分别为 5 至 20 mL/min 和 0.25 至 2 mL/min。根据实验结果，对流动区域提出了新的假设。此外，还建立了一套新的经验相关性，尤其是对于粘度介于 0.99 至 5.98 mPa-s 之间的粘性液体，其相关性非常一致，显示出一种非典型趋势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

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