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Title: A study of liquid dispersions in a spray drying tower
Author: Ashton, Christopher J.
Awarding Body: Aston University
Current Institution: Aston University
Date of Award: 1980
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A study has been undertaken of drop formation from swirl nozzles as encountered in spray drying operations. Four swirl nozzles of different sizes and geometry have been studied experimentally and theoretically in order to characterise the nozzle and establish a model that could predict drop size as a function of throughput, pressure drop and the physical properties of the slurry. The mechanism of drop formation was observed using high speed cine and flash photography. The drop size was estimated from photographs using a Zeiss particle size analyser and the results were confirmed by a Knollenburg particle size analyser. A mathematical model has been developed which is an extension of Taylor's model for conical swirl chambers but which is more generally applicable irrespective of the geometry and the agreement between the experimental discharge velocities and drop sizes, and those predicted were very good.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Chemical Engineering