Axisymmetric acoustophoresis for paper pulp concentration

In pulp and paper mills, mechanical processes such as screening and washing are commonly used to remove accumulated solid suspensions and concentrate the pulp. For environmental reasons and to optimize paper production, an emerging challenge is to develop alternative methods to concentrate paper pul...

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Autores principales:	Romain Le Magueresse, Tamara Krpic, Maxime Bilodeau, Robert Schiavi, Pierre Gelinas, Nicolas Quaegebeur
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Acoustophoresis Papermaking Fiber suspension flow Pulp flow simulation Paper pulp concentration Chemistry QD1-999 Acoustics. Sound QC221-246
Acceso en línea:	https://doaj.org/article/f3d1711f23a046cfb0b9146b0d096c3e
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spelling	oai:doaj.org-article:f3d1711f23a046cfb0b9146b0d096c3e2021-12-02T04:59:51ZAxisymmetric acoustophoresis for paper pulp concentration1350-417710.1016/j.ultsonch.2021.105822https://doaj.org/article/f3d1711f23a046cfb0b9146b0d096c3e2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1350417721003643https://doaj.org/toc/1350-4177In pulp and paper mills, mechanical processes such as screening and washing are commonly used to remove accumulated solid suspensions and concentrate the pulp. For environmental reasons and to optimize paper production, an emerging challenge is to develop alternative methods to concentrate paper pulp between 3 % and 6 % consistency for which the mixed pulp-water flow is complex. Among the proposed solutions in the literature, solutions based on acoustic levitation, also referred as acoustophoresis, of low-consistency pulp have been demonstrated as a potential solution for efficient pulp concentration and water recirculation. However, no sensitivity analysis on the ultrasound and physical parameters was proposed, limiting the extension to a realistic application. Thus, this paper presents a numerical modeling of acoustophoresis for pulp flow concentration in a pipe. For this purpose, the pulp flow is defined as a pseudo-homogenous fluid with a turbulent Low Re k- ∊ formalism, and the pulp particles are considered spherical and deflected by two acoustic forces, namely the acoustic radiation force and the Stokes drag force, both induced by an ultrasound wave generated along the walls of a circular pipe. The combined action of these two forces in the pulp flow enables to concentrate the particles at the center of the pipe. The influences of particle size and mechanical properties, fluid properties and ultrasound parameters are analyzed within a parametric study to optimize the particle deflection and the pulp concentration. The experimental feasibility of the industrial use of acoustophoresis for the concentration of paper pulp is demonstrated with a concentration gain up to 15 %.Romain Le MagueresseTamara KrpicMaxime BilodeauRobert SchiaviPierre GelinasNicolas QuaegebeurElsevierarticleAcoustophoresisPapermakingFiber suspension flowPulp flow simulationPaper pulp concentrationChemistryQD1-999Acoustics. SoundQC221-246ENUltrasonics Sonochemistry, Vol 80, Iss , Pp 105822- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Acoustophoresis Papermaking Fiber suspension flow Pulp flow simulation Paper pulp concentration Chemistry QD1-999 Acoustics. Sound QC221-246
spellingShingle	Acoustophoresis Papermaking Fiber suspension flow Pulp flow simulation Paper pulp concentration Chemistry QD1-999 Acoustics. Sound QC221-246 Romain Le Magueresse Tamara Krpic Maxime Bilodeau Robert Schiavi Pierre Gelinas Nicolas Quaegebeur Axisymmetric acoustophoresis for paper pulp concentration
description	In pulp and paper mills, mechanical processes such as screening and washing are commonly used to remove accumulated solid suspensions and concentrate the pulp. For environmental reasons and to optimize paper production, an emerging challenge is to develop alternative methods to concentrate paper pulp between 3 % and 6 % consistency for which the mixed pulp-water flow is complex. Among the proposed solutions in the literature, solutions based on acoustic levitation, also referred as acoustophoresis, of low-consistency pulp have been demonstrated as a potential solution for efficient pulp concentration and water recirculation. However, no sensitivity analysis on the ultrasound and physical parameters was proposed, limiting the extension to a realistic application. Thus, this paper presents a numerical modeling of acoustophoresis for pulp flow concentration in a pipe. For this purpose, the pulp flow is defined as a pseudo-homogenous fluid with a turbulent Low Re k- ∊ formalism, and the pulp particles are considered spherical and deflected by two acoustic forces, namely the acoustic radiation force and the Stokes drag force, both induced by an ultrasound wave generated along the walls of a circular pipe. The combined action of these two forces in the pulp flow enables to concentrate the particles at the center of the pipe. The influences of particle size and mechanical properties, fluid properties and ultrasound parameters are analyzed within a parametric study to optimize the particle deflection and the pulp concentration. The experimental feasibility of the industrial use of acoustophoresis for the concentration of paper pulp is demonstrated with a concentration gain up to 15 %.
format	article
author	Romain Le Magueresse Tamara Krpic Maxime Bilodeau Robert Schiavi Pierre Gelinas Nicolas Quaegebeur
author_facet	Romain Le Magueresse Tamara Krpic Maxime Bilodeau Robert Schiavi Pierre Gelinas Nicolas Quaegebeur
author_sort	Romain Le Magueresse
title	Axisymmetric acoustophoresis for paper pulp concentration
title_short	Axisymmetric acoustophoresis for paper pulp concentration
title_full	Axisymmetric acoustophoresis for paper pulp concentration
title_fullStr	Axisymmetric acoustophoresis for paper pulp concentration
title_full_unstemmed	Axisymmetric acoustophoresis for paper pulp concentration
title_sort	axisymmetric acoustophoresis for paper pulp concentration
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/f3d1711f23a046cfb0b9146b0d096c3e
work_keys_str_mv	AT romainlemagueresse axisymmetricacoustophoresisforpaperpulpconcentration AT tamarakrpic axisymmetricacoustophoresisforpaperpulpconcentration AT maximebilodeau axisymmetricacoustophoresisforpaperpulpconcentration AT robertschiavi axisymmetricacoustophoresisforpaperpulpconcentration AT pierregelinas axisymmetricacoustophoresisforpaperpulpconcentration AT nicolasquaegebeur axisymmetricacoustophoresisforpaperpulpconcentration
_version_	1718400927192317952

Axisymmetric acoustophoresis for paper pulp concentration

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