Effect of a draft tube on gas–liquid jet boundaries in a gas–solid fluidized bed

Briens, Cédric; Dawe, Matthew; Berruti, Franco

doi:10.1016/j.cep.2008.11.006

Cited by 10 publications

(5 citation statements)

References 19 publications

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“…This can either be achieved by performing dedicated experiments or detailed numerical simulations. The experimental studies reported in literature for gassolid fluidized beds include: dynamic pressure drop analysis [6], temperature measurements near the injection point, X-ray imaging [7] and triboelectric probe measurements [8]. However, these techniques either provide point information or possess a low resolution with complex image post processing.…”

Section: Introductionmentioning

confidence: 99%

CFD–DEM model for coupled heat and mass transfer in a spout fluidized bed with liquid injection

Sutkar

Deen

Patil

et al. 2016

Chemical Engineering Journal

100

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DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User Agreement:

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Section: Introductionmentioning

confidence: 99%

CFD–DEM model for coupled heat and mass transfer in a spout fluidized bed with liquid injection

Sutkar

Deen

Patil

et al. 2016

Chemical Engineering Journal

100

View full text Add to dashboard Cite

show abstract

“…This can be achieved by performing detailed experimental studies addressing both the hydrodynamics and thermal aspects. The experimental studies reported in literature include: pressure drop analysis, temperature measurements near the injection point or in the whole water atomized gas–solid fluidized bed, fiber optical probe measurements of solids concentration and particle velocity under dry and wet conditions, and triboelectric probe measurements . McDougall et al measured the dynamic pressure signals generated during liquid injection (water, 1‐propanol, and 1‐butanol) to identify the bed fluidity and the particle agglomerate formation in a fluidized bed with a two‐fluid nozzle.…”

Section: Introductionmentioning

confidence: 99%

“…However, these techniques often possess a low resolution with a complex image post processing. By considering this, Briens et al have extended triboelectric effect (i.e., electrostatic charges generated during particles collision and friction with particle and metal surface) measurement technique to study the penetration and expansion of a gas–liquid spray in a fluidized bed through a triboelectric current measurement. Even though this technique provides an nonintrusive illustration of free moisture, quantitative data such as particle velocity and porosity are difficult to obtain.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of hydrodynamics and thermal behavior of a pseudo‐2D spout‐fluidized bed with liquid injection

et al. 2015

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A novel nonintrusive technique is presented to investigate hydrodynamic and thermal behavior of gas–solid spout‐fluidized beds with liquid injection, by simultaneously capturing visual and infrared images. Experiments were performed in a pseudo‐2D bed with draft plates filled with glass or γ‐alumina particles to investigate the effect of liquid injection and particle properties on the flow characteristics. For the glass particles under dry and wet conditions, time‐averaged particle velocities show similar quasi‐steady‐state behavior. However, under wet conditions, lower particle velocities were observed in both spout and annulus as compared with the dry system. Whereas, γ‐alumina particles do not show considerable variation in the particle velocities under dry and wet conditions and fluidize well at higher liquid injection rates. Additionally, for the glass particles, the particle temperature significantly decreases as compared to the γ‐alumina particles. © 2015 American Institute of Chemical Engineers AIChE J, 61: 1146–1159, 2015

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“…Features Temperature probes [1,9,12,22] • Fast and robust • Invasive • Sticking, difficult interpretation [9] and [12] • Mostly employed for time averages Suction probes [9,14] • Mainly for time averaged gas composition profiles • Invasive • Potential for bias by sticking liquid Pressure probes [2,21,20,36] • Common indicator of change of fluidization regime [2,21,20] • Other techniques required to confirm interpretation [20,36] Tribo-electric probes [3,6,26] • Invasive • Sensitive to local hydrodynamics the infrared, and presents a method to detect the dense emulsion phase using the camera detecting visual light, to ensure proper application of the calibration. Therefore, this method, unlike that by [25], also works for wide temperature distributions in the solid phase.…”

Section: Techniquementioning

confidence: 99%

“…In absense of an estimate for T w , equation (5) cannot be evaluated. However, substituting the assumption T w = T b into equation (5) yields equation (6).…”

Section: Interference Of a Window In Thermographymentioning

confidence: 99%

Development of a non-invasive optical technique to study liquid evaporation in gas–solid fluidized beds

Kolkman

Annaland

Kuipers

2016

Chemical Engineering Science

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DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal. If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User Agreement:

show abstract

Effect of a draft tube on gas–liquid jet boundaries in a gas–solid fluidized bed

Cited by 10 publications

References 19 publications

CFD–DEM model for coupled heat and mass transfer in a spout fluidized bed with liquid injection

CFD–DEM model for coupled heat and mass transfer in a spout fluidized bed with liquid injection

Experimental study of hydrodynamics and thermal behavior of a pseudo‐2D spout‐fluidized bed with liquid injection

Development of a non-invasive optical technique to study liquid evaporation in gas–solid fluidized beds

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