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Colliding Drops in Spray Dryers
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering. (Structural Mechanics)
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering. (Structural Mechanics)
2018 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Spray drying is a process, which produces powders from the fluid state. This type of process is mostly used in the industrial sector. In this process, a liquid slurry is atomized, forming droplets, which are dried with hot air. During spray drying these droplets will interact and upon impact can show different types of interactions; droplet-droplet collisions as well as interactions with partially or completely dried particles, leading to agglomeration. The result of collision gives properties of the dried powder. The focus of the thesis is to investigate the droplet-droplet collision outcomes of WPC 80 (Whey Protein Concentrate 80) and Lactose. Then the effects of the absolute droplet diameter and the droplet diameter ratios are to be determined. Existing experimental setup and Image Processing Tool of MATLAB is used to study the collision outcome. The outcomes are shown in a regime map. The present results are compared with different products result and literature study. It is observed that there is an effect on collision outcome for different droplet size ratios and no effect for absolute droplet diameter.

Place, publisher, year, edition, pages
2018. , p. 80
Series
Blekinge Tekniska Högskola Forskningsrapport, ISSN 1103-1581
Keywords [en]
Binary Droplet Collision, Collision Regime Maps, Droplet Dynamics, Image Processing Tool, Spray Dryer.
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:bth-17386OAI: oai:DiVA.org:bth-17386DiVA, id: diva2:1269131
External cooperation
Tetra Pak Processing Systems, Lund, Sweden.
Subject / course
MT2525 Masters Thesis (120 credits) in Mechanical Engineering with emphasis on Structural Engineering
Educational program
MTAMT Master of Science Programme in Mechanical Engineering with emphasis on Structural Mechanics
Presentation
2018-10-25, J3423, Blekinge Institute of Technology, Karlskrona, 13:15 (English)
Supervisors
Examiners
Available from: 2018-12-10 Created: 2018-12-08 Last updated: 2018-12-10Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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Language
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  • Other locale
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Output format
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