A Simplified Correlation of Mass Transfer in a Pulsed Sieve Plate Extraction Column

Luo, Guangsheng; Li, Hangbo; Fei, Weiyang; Wang, Jiading

doi:10.1002/(sici)1521-4125(199810)21:10<823::aid-ceat823>3.0.co;2-g

Cited by 23 publications

(4 citation statements)

References 11 publications

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“…Usually, the concentrations of the aqueous and organic phase at the interface are assumed to be in equilibrium. [43][44][45][46] Dinh proposed that this hypothesis is not true and imposed pseudo-first-order interfacial extraction kinetics to improve the overall mass transfer rate calculation. [47] However, the real interfacial compositions are seldom determined and therefore it is very difficult to distinguish between diffusive transfer and transfer with those interfacial extraction kinetics.…”

Section: Mass Transfer Kinetic Modelmentioning

confidence: 99%

Development and Validation of a Flowsheet Simulation Model for Neptunium Extraction in an Advanced PUREX Process

Chen

Taylor

Jobson

et al. 2016

Solvent Extraction and Ion Exchange

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An Advanced PUREX process has been developed for separation and recycling of neptunium from spent nuclear fuel. This work presents a new flowsheet simulation model for the extraction of neptunium using centrifugal contactors, where mass transfer is modeled using two-film theory and a linear driving force. Distribution coefficients and neptunium redox reactions are modeled using published models. Mass transfer between the organic and aqueous phases in the phase separation zone is shown to have a negligible effect. The model is applied to a previously tested flowsheet and its predictions are shown to be in good agreement with the experimental results.

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Section: Mass Transfer Kinetic Modelmentioning

confidence: 99%

Development and Validation of a Flowsheet Simulation Model for Neptunium Extraction in an Advanced PUREX Process

Chen

Taylor

Jobson

et al. 2016

Solvent Extraction and Ion Exchange

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show abstract

“…Nevertheless, the changing trend of our data is consistent with the literature data. On the other hand, comparing to the conventional extraction columns , in which the volumetric overall mass transfer coefficient is in the range of 10 –4 to 10 –3 s –1 , the data of the present work is in the range of 0.01 to 0.1 s –1 , which indicates that the microextractor is much more efficient.…”

Section: Resultsmentioning

confidence: 57%

Hydrodynamics and Mass Transfer in a Countercurrent Multistage Microextraction System

Lan

Jing

et al. 2016

Ind. Eng. Chem. Res.

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In our previous study, a bionic system simulating the cardiovascular system was built to realize a countercurrent multistage microextraction. However, further study on the hydrodynamics and mass transfer performances of such a system is still needed. In this study, a theoretical model was first established to describe the relationship between the pressure drop and the flow rate. The flow resistance, including the effect of the two-phase interface, was investigated based on the theoretical model and experimental data. The mass transfer coefficient was then investigated by experiments and computational fluidic dynamics (CFD) simulation. The overall mass transfer coefficient was found positively correlated with the slug velocity. Both the aqueous phase mass transfer coefficient and the organic phase mass transfer coefficient were obtained by CFD simulation. A correlation equation was established to calculate the Sherwood number, and it is proved to be applicable in both the aqueous and the organic phases.

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“…The study of the mass transfer performance (efficiency) of a pulsed column is, therefore, essential for the design and operation of the column. Several studies have already been performed on mass transfer characteristics of a pulsed sieve-plate tower and many correlations [4,7,9,17,18,20,23,28] have been developed to predict the design and performance of a new column. However, due to the complex nature of the extraction process, the design procedures and practices (correlations) are not yet well established and usually pilot scale testing is required for such columns.…”

Section: Introductionmentioning

confidence: 99%

Mass transfer efficiency of a tall and low plate free area liquid pulsed sieve-plate extraction column

et al. 2017

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Mass transfer performance is studied in a tall, thin, and low plate free area liquid pulsed sieve-plate extraction column. The 5.0 cm internal diameter column consists of eighty sieve plates with percent free area of only 13.5. The effects of pulsation intensity (product of amplitude and frequency) and dispersed phase velocity are studied on the extraction efficiency of the column for the acetic acid-kerosene-water system. A mass transfer correlation for the measurement of overall mass transfer coefficient is developed that best-fits the experimental data obtained in the present study. Mathematical analysis of the column is carried out that shows the insignificance of axial diffusivities in the column.

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A Simplified Correlation of Mass Transfer in a Pulsed Sieve Plate Extraction Column

Cited by 23 publications

References 11 publications

Development and Validation of a Flowsheet Simulation Model for Neptunium Extraction in an Advanced PUREX Process

Development and Validation of a Flowsheet Simulation Model for Neptunium Extraction in an Advanced PUREX Process

Hydrodynamics and Mass Transfer in a Countercurrent Multistage Microextraction System

Mass transfer efficiency of a tall and low plate free area liquid pulsed sieve-plate extraction column

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