Modeling and Experimental Investigation of the Morphology of Spray Dryed Particles

Brenn, Günter; Wiedemann, Thomas; Rensink, Dirk; Kastner, Oliver; Yarin, Alexander L.

doi:10.1002/1521-4125(200111)24:11<1113::aid-ceat1113>3.0.co;2-2

Cited by 20 publications

(3 citation statements)

References 4 publications

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“…q l is the density of the liquid, q s is the density of the pure solid material, and x s is the solid mass content of the feed as x s = _ m s /( _ m s + _ m l ). Many attempts have been made to simulate the generation of the solid structure [3][4][5][6][7][8]. The results of these studies are very specific.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Spray Method on Product Quality and Morphology in Spray Drying

Walzel

2011

Chem Eng & Technol

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The spraying system is responsible for the particle formation and spray pattern. The most important features of sprays emerging from different atomizers are discussed. In the case of pneumatic atomizers the entrainment is low and a well‐mixed jet with little segregation of fine and large particles occurs. A much stronger interaction of gas and spray takes place in the case of large spray angles as, e.g., produced by rotary atomizers. To some extent the particle morphology is known to depend on the drying speed and thus on the entrainment.

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Section: Introductionmentioning

confidence: 99%

Influence of the Spray Method on Product Quality and Morphology in Spray Drying

Walzel

2011

Chem Eng & Technol

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“…A wide body of work addresses the process of particle formation during spray‐drying. These studies mostly report on single droplet drying experiments conducted in controlled environments, purely theoretical work including mass and heat transfer calculations for droplets and a combination of experimental and theoretical work on actual multiple‐particle spray dryers . Many factors affect the final morphology of the particles, but most published theories focus on the drying mechanism in single droplets under controlled conditions.…”

Section: Spray‐drying Of Saline Solutionsmentioning

confidence: 99%

Influence of Process Parameters on the Morphology of Spray‐Dried BaCl₂ Powders

et al. 2015

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Spray‐drying is an effective method for producing powder aggregates with controlled size and morphology. Here, we report on a systematic study aimed at determining how spray‐drying parameters such as nozzle temperature, gas flow, salt concentration and solution feed rate, influence the characteristics of BaCl2 granules prepared from aqueous solutions. We correlate the granule characteristics to these conditions through the use of processing maps and modeling. It is found that well‐dispersed, high density and spherical aggregates, which are favorable for subsequent powder compaction and sintering, can be obtained within a limited range of processing conditions.

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“…Previous results address the formation of particle morphology of different substances under defined conditions in single droplets ( e.g . aqueous solutions of salts, silica suspensions, aqueous sodium acrylate solutions or N ‐vinyl‐2‐pyrrolidone …”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Morphology Formation of Polymer Particles in an Acoustic Levitator

Sedelmayer

Griesing

Halfar

et al. 2013

Macromolecular Symposia

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Summary: Droplet polymerization of N-vinyl-2-pyrrolidone (NVP) and sodium acrylate (NaAA) was carried out in an acoustic levitator for different ambient temperatures and relative humidities. The resulting particle morphologies were compared to particles of two crystalline systems (mannitol and ammonium sulfate) and two disperse systems (silica and styrene -butyl acrylate dispersion), all obtained under similar drying conditions. NVP was found to form a higher amount of crystals with lower temperature and relative humidity, contrary to the behaviour observed for mannitol and ammonium sulfate. The processes of both, polymerization and drying of NaAA lead to similar morphologies at low temperatures and humidities, probably caused by the precipitation of NaAA during polymerization.

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Modeling and Experimental Investigation of the Morphology of Spray Dryed Particles

Cited by 20 publications

References 4 publications

Influence of the Spray Method on Product Quality and Morphology in Spray Drying

Influence of the Spray Method on Product Quality and Morphology in Spray Drying

Influence of Process Parameters on the Morphology of Spray‐Dried BaCl₂ Powders

Experimental Investigation of the Morphology Formation of Polymer Particles in an Acoustic Levitator

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Modeling and Experimental Investigation of the Morphology of Spray Dryed Particles

Cited by 20 publications

References 4 publications

Influence of the Spray Method on Product Quality and Morphology in Spray Drying

Influence of the Spray Method on Product Quality and Morphology in Spray Drying

Influence of Process Parameters on the Morphology of Spray‐Dried BaCl2 Powders

Experimental Investigation of the Morphology Formation of Polymer Particles in an Acoustic Levitator

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Product

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Influence of Process Parameters on the Morphology of Spray‐Dried BaCl₂ Powders