Drop formation at nozzles submerged in quiescent continuous phase: an experimental study with TBP-dodecane and nitric acid system

Amitava Roy; Mayur Darekar; K.K. Singh; K.T. Shenoy; R.B. Grover

doi:10.1007/s41365-018-0415-z

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Drop formation at nozzles submerged in quiescent continuous phase: an experimental study with TBP-dodecane and nitric acid system

NUCLEAR CHEMISTRY, RADIOCHEMISTRY, NUCLEAR MEDICINE | Updated：2021-02-07

- Drop formation at nozzles submerged in quiescent continuous phase: an experimental study with TBP-dodecane and nitric acid system
- Nuclear Science and Techniques Vol. 29, Issue 6, Article number: 88(2018)
- Affiliations：
  
  1.Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
  2.Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Author bio：
  
  Corresponding authors: Amitava Royamitava05roy@yahoo.co.in,
  kksingh@barc.gov.in
- Funds：
- DOI：10.1007/s41365-018-0415-z
  CLC：
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Amitava Roy, Mayur Darekar, K.K. Singh, et al. Drop formation at nozzles submerged in quiescent continuous phase: an experimental study with TBP-dodecane and nitric acid system. [J]. Nuclear Science and Techniques 29(6):88(2018)
DOI：

Amitava Roy, Mayur Darekar, K.K. Singh, et al. Drop formation at nozzles submerged in quiescent continuous phase: an experimental study with TBP-dodecane and nitric acid system. [J]. Nuclear Science and Techniques 29(6):88(2018) DOI： 10.1007/s41365-018-0415-z.

摘要

Abstract

Solvent extraction is an important process in the nuclear fuel cycle. Tributyl phosphate (TBP) diluted with dodecane is commonly used as a solvent for extracting heavy metals from a nitric acid medium. Studies on the hydrodynamics of a single drop, which is the smallest mass transfer entity, are required for better understanding of the complex mass transfer and phase separation phenomena that occur in extraction equipment. In this study, drop formation at nozzles is studied using 30%TBP-dodecane as the dispersed phase and dilute nitric acid as the quiescent continuous phase. Experiments are carried out to determine the drop diameter, jetting velocity, drop detachment height and drop formation time for various dispersed phase velocities, nozzle diameters (1.91 mm, 3.04 mm, and 4.88 mm), and nitric acid concentrations (0.01N, 1N, 3N). Drop formation is captured using high speed imaging, which enables quantification of drop size, onset of jetting, drop detachment height, and drop formation time. Experimental data are used to propose correlations for predicting drop diameter and minimum jetting velocity. The correlations are found to be very accurate with average absolute relative errors of 5.23% and 2.9%, respectively.

关键词

Keywords

Drop diameterDrop detachment heightDrop formation timeJetting velocitySolvent extractionTBP-dodecane

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