Ultrasonic Method for Online Tracking of Interface and Dispersion Band in Gravity Settlers,Industrial & Engineering Chemistry Research

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Ultrasonic Method for Online Tracking of Interface and Dispersion Band in Gravity Settlers
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-06-30 , DOI: 10.1021/acs.iecr.0c02407
Debmalya Mukherjee ₁ , Nirvik Sen ₂ , K. K. Singh ₂ , Shilpi Saha ₁ , S. Mukhopadhyay ₂ , K.T. Shenoy ₂ , P.P. Marathe ₁

Affiliation

Liquid–liquid solvent extraction process consists of dispersion of one phase into another in the form of fine drops and allowing the solute of interest to migrate from one phase into the other. Subsequently, it is essential to separate the two phases for further processing. In this regard, it is critical to continuously monitor the interface of two liquid phases as entrainment of one phase with another will lead to severe issues in downstream equipment and processes to follow. In this regard, an ultrasonic (UT) based online interface tracking device is developed which can detect the top layer of liquid–liquid interface (30% TBP/DD and water containing trace amounts of uranium) as well as estimate its dispersion thickness. This has been achieved using a single minimally invasive sensor. A novel signal-processing algorithm is developed to denoise and extract meaningful parameters for this estimation from the reflected and highly scattered/attenuated UT signal. The paper reports development of a mathematical model of the algorithm, experimental setup, and validation of the proposed system in a batch gravity settler.

中文翻译：

重力沉降器界面和分散带在线跟踪的超声方法

液-液溶剂萃取过程包括以细滴形式将一相分散到另一相中，并使感兴趣的溶质从一相迁移到另一相。随后，必须将两个阶段分开进行进一步处理。在这方面，至关重要的是连续监测两个液相的界面，因为一个相与另一个相的夹带会导致下游设备和后续工艺的严重问题。在这方面，开发了一种基于超声波（UT）的在线界面跟踪设备，该设备可以检测液-液界面的顶层（30％TBP / DD和水中含有痕量铀）并估计其分散厚度。这是使用单个微创传感器实现的。开发了一种新颖的信号处理算法，以从反射和高度散射/衰减的UT信号中去噪并提取有意义的参数，以进行此估计。该论文报告了该算法的数学模型的开发，实验设置以及在间歇式重力沉降器中对所提出系统的验证。

更新日期：2020-07-22

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