University of Limerick
Browse
Frawley_2015_particle.pdf (1.93 MB)

Particle size distribution and yield control in continuous plug flow crystallizers with recycle

Download (1.93 MB)
journal contribution
posted on 2017-04-03, 10:52 authored by Giuseppi Cogoni, Brian P. de Souza, Patrick J. Frawley
Plug Flow Crystallizers (PFCs) are one of the most widely employed forms of continuous crystallizers. PFCs are usually selected for processes with fast kinetics and short residence times. One key limitation of PFCs is that normally they do not operate at equilibrium conditions as a consequence of the short residence times. Thus, the resultant yield from PFCs is generally less than that of the equivalent batch process.Recycling the mother liquor back through the PFC is one approach, which can potentially be used in order to mitigate against this drawback, allowing for an amelioration in the continuous process yield.In the present work, the effects of introducing a recycle stream and adjusting critical recycling parameters, namely recycling ratio and axial extraction position, on an idealized PFC are examined. Particular attention is focused on the resultant volume average size of particles d(4,3), and the process yield The influence of feed velocity along with the recycle parameters on the maximum and minimum yield and size of crystals achievable is also investigated.The proposed continuous PFC, as conceptualized and modeled with recycle, facilitates practical application in an industrial setting, allowing for augmented continuous process yields, whilst furthermore facilitating PSD control. (C) 2015 Elsevier Ltd. All rights reserved.

History

Publication

Chemical Engineering Science;138, pp. 592-599

Publisher

Elsevier

Note

peer-reviewed

Other Funding information

SFI

Rights

This is the author’s version of a work that was accepted for publication in Chemical Engineering Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Chemical Engineering Science, 138, pp. 592-599, http://dx.doi.org/10.1016/j.ces.2015.08.041

Language

English

Usage metrics

    University of Limerick

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC