Drop size distribution and dispersed phase hold up in a continuous pump-mix mixer with trapezoidal blade impeller

IF 3.2 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Progress in Nuclear Energy Pub Date : 2025-08-06 DOI:10.1016/j.pnucene.2025.105931

Nirvik Sen , A.U. Renjith , K.K. Singh , K.T. Shenoy

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引用次数: 0

Abstract

Experimental results on dispersed-phase holdup and droplet size distributions in a continuous-flow mixer are reported. The mixer is equipped with a four-bladed, top-shrouded pump-mix impeller with trapezoidal blades. A dilute solution of phosphoric acid (30 wt %) serves as the continuous phase, while a mixture of TBP (tributyl phosphate) and D2EHPA (di-2-ethylhexyl phosphoric acid) in dodecane is dispersed within it. The effects of impeller speed and the flow rates of dispersed and continuous phases on droplet size distribution and dispersed-phase holdup are studied. An off-line sampling technique is used for stabilizing the withdrawn dispersion with the help of a water-soluble surfactant. The measured droplet size distributions are found to be log-normal. Empirical correlations have been developed to predict dispersed-phase holdup and Sauter mean drop diameter. A direct comparison of the specific interfacial area generated in the mixer under organic and aqueous continuous operation is also presented.

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梯形叶片叶轮连续泵-混合器中液滴的粒径分布和分散相保持

报道了连续流混合器中分散相含率和液滴粒径分布的实验结果。混合器配有四叶、顶冠、梯形叶片的泵混合叶轮。连续相为稀磷酸溶液（30% wt %），而十二烷中TBP（磷酸三丁酯）和D2EHPA（二-2-乙基己基磷酸）的混合物分散在其中。研究了叶轮转速、分散相和连续相流速对液滴粒径分布和分散相含率的影响。在水溶性表面活性剂的帮助下，离线取样技术用于稳定撤出的分散体。测量的液滴尺寸分布是对数正态分布。已经开发了经验关联来预测分散相含率和Sauter平均液滴直径。本文还对混合器在有机和水连续操作下产生的比界面面积进行了直接比较。

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

Progress in Nuclear Energy 工程技术-核科学技术

CiteScore

5.30

自引率

14.80%

发文量

331

审稿时长

3.5 months

期刊介绍： Progress in Nuclear Energy is an international review journal covering all aspects of nuclear science and engineering. In keeping with the maturity of nuclear power, articles on safety, siting and environmental problems are encouraged, as are those associated with economics and fuel management. However, basic physics and engineering will remain an important aspect of the editorial policy. Articles published are either of a review nature or present new material in more depth. They are aimed at researchers and technically-oriented managers working in the nuclear energy field. Please note the following: 1) PNE seeks high quality research papers which are medium to long in length. Short research papers should be submitted to the journal Annals in Nuclear Energy. 2) PNE reserves the right to reject papers which are based solely on routine application of computer codes used to produce reactor designs or explain existing reactor phenomena. Such papers, although worthy, are best left as laboratory reports whereas Progress in Nuclear Energy seeks papers of originality, which are archival in nature, in the fields of mathematical and experimental nuclear technology, including fission, fusion (blanket physics, radiation damage), safety, materials aspects, economics, etc. 3) Review papers, which may occasionally be invited, are particularly sought by the journal in these fields.