3 years ago

Effects of Geometry and Internals of a Continuous Gravity Settler on Liquid–Liquid Separation

Effects of Geometry and Internals of a Continuous Gravity Settler on Liquid–Liquid Separation
Vivek V. Buwa, Saroj K. Panda
Continuous gravity settlers are widely used for liquid–liquid separations in solvent extraction processes. In the present work, the effects of settler design [geometry, settling area (A), locations of inlet and outlet] and internals (baffles, picket fence, end-plate) on the separation performance were investigated. An experimentally validated Eulerian CFD model implemented in OpenFOAM was used. For a fixed flow rate of dispersion (Qt), an increase in the settler length led to a reduction in the dispersion-band thickness. For settlers with length-to-width ratios (L/W) of <1.5, the settler performance was found to be improved by combined use of baffle and picket fence. The organic-to-aqueous phase ratio (αorgaq), end-plate height, and aqueous outlet location were found to influence the phase separation significantly. An empirical correlation was developed to predict the dispersion-band thickness as a function of Qt, A, ρorgaq, inlet baffle opening slot position, and αorgaq. The present work will be useful for the design of optimal settler configurations.

Publisher URL: http://dx.doi.org/10.1021/acs.iecr.7b03756

DOI: 10.1021/acs.iecr.7b03756

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.