Effect of the liquid layer on the impact behaviour of particles

S. Antonyuk, S. Heinrich, M. Dosta, M.S. van Buijtenen, N.G. Deen, J.A.M. Kuipers

    Research output: Contribution to conferencePaperAcademicpeer-review

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    Abstract

    During a spray granulation process the moisture loading in fluidized beds has a great influence on the inter-particle collision properties and hence on the flow behaviour. To study the influence of the liquid layer as well as granule impact velocity on the impact behaviour free-fall experiments were performed. During these experiments the g-Al2O3 granules were dropped from a predefined height onto a liquid layer on the flat steel wall and the velocity-time curves were obtained using high speed video recording. The height of the liquid layer was varied from 50 mm to 1 mm. Moreover, the tests were performed at different velocities and viscosities of liquid layer in the range of 1-300 mPa∙s. Both distilled water and water solutions of hydroxypropyl methylcellulose with different concentrations (3, 6, 10 mass-%) were used.
    The obtained restitution coefficients were compared with the experiments performed without liquid film on the surface. For a granule impacted on a liquid film on the wall, the increase of liquid viscosity decreases the restitution coefficient and thickness of liquid layer at which the granule sticks. In the examined velocity range, with decreasing impact velocity the restitution coefficient greatly decreases. To explain the obtained effects the force and energy balances for a particle impacted on a liquid layer on the wall were derived. Both contributions to energy absorption (granule-liquid layer and granule-wall contacts) have been taken into consideration.
    Original languageEnglish
    Number of pages10
    Publication statusPublished - 22 Jun 2009
    Event9th International Symposium on Agglomeration 2009 - Sheffield, United Kingdom
    Duration: 22 Jun 200926 Jun 2009

    Conference

    Conference9th International Symposium on Agglomeration 2009
    CountryUnited Kingdom
    CitySheffield
    Period22/06/0926/06/09

    Fingerprint

    liquids
    impact velocity
    coefficients
    viscosity
    free fall
    particle collisions
    energy absorption
    moisture
    water
    sprayers
    beds
    recording
    high speed
    steels
    curves
    energy

    Keywords

    • METIS-263168

    Cite this

    Antonyuk, S., Heinrich, S., Dosta, M., van Buijtenen, M. S., Deen, N. G., & Kuipers, J. A. M. (2009). Effect of the liquid layer on the impact behaviour of particles. Paper presented at 9th International Symposium on Agglomeration 2009, Sheffield, United Kingdom.
    Antonyuk, S. ; Heinrich, S. ; Dosta, M. ; van Buijtenen, M.S. ; Deen, N.G. ; Kuipers, J.A.M. / Effect of the liquid layer on the impact behaviour of particles. Paper presented at 9th International Symposium on Agglomeration 2009, Sheffield, United Kingdom.10 p.
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    title = "Effect of the liquid layer on the impact behaviour of particles",
    abstract = "During a spray granulation process the moisture loading in fluidized beds has a great influence on the inter-particle collision properties and hence on the flow behaviour. To study the influence of the liquid layer as well as granule impact velocity on the impact behaviour free-fall experiments were performed. During these experiments the g-Al2O3 granules were dropped from a predefined height onto a liquid layer on the flat steel wall and the velocity-time curves were obtained using high speed video recording. The height of the liquid layer was varied from 50 mm to 1 mm. Moreover, the tests were performed at different velocities and viscosities of liquid layer in the range of 1-300 mPa∙s. Both distilled water and water solutions of hydroxypropyl methylcellulose with different concentrations (3, 6, 10 mass-{\%}) were used.The obtained restitution coefficients were compared with the experiments performed without liquid film on the surface. For a granule impacted on a liquid film on the wall, the increase of liquid viscosity decreases the restitution coefficient and thickness of liquid layer at which the granule sticks. In the examined velocity range, with decreasing impact velocity the restitution coefficient greatly decreases. To explain the obtained effects the force and energy balances for a particle impacted on a liquid layer on the wall were derived. Both contributions to energy absorption (granule-liquid layer and granule-wall contacts) have been taken into consideration.",
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    author = "S. Antonyuk and S. Heinrich and M. Dosta and {van Buijtenen}, M.S. and N.G. Deen and J.A.M. Kuipers",
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    Antonyuk, S, Heinrich, S, Dosta, M, van Buijtenen, MS, Deen, NG & Kuipers, JAM 2009, 'Effect of the liquid layer on the impact behaviour of particles' Paper presented at 9th International Symposium on Agglomeration 2009, Sheffield, United Kingdom, 22/06/09 - 26/06/09, .

    Effect of the liquid layer on the impact behaviour of particles. / Antonyuk, S.; Heinrich, S.; Dosta, M.; van Buijtenen, M.S.; Deen, N.G.; Kuipers, J.A.M.

    2009. Paper presented at 9th International Symposium on Agglomeration 2009, Sheffield, United Kingdom.

    Research output: Contribution to conferencePaperAcademicpeer-review

    TY - CONF

    T1 - Effect of the liquid layer on the impact behaviour of particles

    AU - Antonyuk, S.

    AU - Heinrich, S.

    AU - Dosta, M.

    AU - van Buijtenen, M.S.

    AU - Deen, N.G.

    AU - Kuipers, J.A.M.

    PY - 2009/6/22

    Y1 - 2009/6/22

    N2 - During a spray granulation process the moisture loading in fluidized beds has a great influence on the inter-particle collision properties and hence on the flow behaviour. To study the influence of the liquid layer as well as granule impact velocity on the impact behaviour free-fall experiments were performed. During these experiments the g-Al2O3 granules were dropped from a predefined height onto a liquid layer on the flat steel wall and the velocity-time curves were obtained using high speed video recording. The height of the liquid layer was varied from 50 mm to 1 mm. Moreover, the tests were performed at different velocities and viscosities of liquid layer in the range of 1-300 mPa∙s. Both distilled water and water solutions of hydroxypropyl methylcellulose with different concentrations (3, 6, 10 mass-%) were used.The obtained restitution coefficients were compared with the experiments performed without liquid film on the surface. For a granule impacted on a liquid film on the wall, the increase of liquid viscosity decreases the restitution coefficient and thickness of liquid layer at which the granule sticks. In the examined velocity range, with decreasing impact velocity the restitution coefficient greatly decreases. To explain the obtained effects the force and energy balances for a particle impacted on a liquid layer on the wall were derived. Both contributions to energy absorption (granule-liquid layer and granule-wall contacts) have been taken into consideration.

    AB - During a spray granulation process the moisture loading in fluidized beds has a great influence on the inter-particle collision properties and hence on the flow behaviour. To study the influence of the liquid layer as well as granule impact velocity on the impact behaviour free-fall experiments were performed. During these experiments the g-Al2O3 granules were dropped from a predefined height onto a liquid layer on the flat steel wall and the velocity-time curves were obtained using high speed video recording. The height of the liquid layer was varied from 50 mm to 1 mm. Moreover, the tests were performed at different velocities and viscosities of liquid layer in the range of 1-300 mPa∙s. Both distilled water and water solutions of hydroxypropyl methylcellulose with different concentrations (3, 6, 10 mass-%) were used.The obtained restitution coefficients were compared with the experiments performed without liquid film on the surface. For a granule impacted on a liquid film on the wall, the increase of liquid viscosity decreases the restitution coefficient and thickness of liquid layer at which the granule sticks. In the examined velocity range, with decreasing impact velocity the restitution coefficient greatly decreases. To explain the obtained effects the force and energy balances for a particle impacted on a liquid layer on the wall were derived. Both contributions to energy absorption (granule-liquid layer and granule-wall contacts) have been taken into consideration.

    KW - METIS-263168

    M3 - Paper

    ER -

    Antonyuk S, Heinrich S, Dosta M, van Buijtenen MS, Deen NG, Kuipers JAM. Effect of the liquid layer on the impact behaviour of particles. 2009. Paper presented at 9th International Symposium on Agglomeration 2009, Sheffield, United Kingdom.