Bed humidity is a critical parameter that needs to be controlled in a fluidized bed granulation to ensure reliability. To predict and control the bed humidity during the fluidized bed granulation process, a simple model based on the mass conservation of moisture was developed. The moisture mass bala
Temperature and humidity measurements in a drying fluidized bed
β Scribed by P.M. Heertjes; H.G.J. de Boer; A.H. de Haas van Dorsser
- Publisher
- Elsevier Science
- Year
- 1953
- Tongue
- English
- Weight
- 967 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0009-2509
No coin nor oath required. For personal study only.
β¦ Synopsis
Temperature and hmmdity meatmrementa of air in and above a drymg fluidized maw of diea gel are given. It IS proved that perpendicular to the flow of an the temperature and the humid&y show no gradient ; that the temperature of the ahca gel is practically equal to the temperature of the leavmg au, being independent of the place m the apparatus ; that maw and heat transfer takea place in a very small layer only and llnally that heat is transferred to the sohd substance by the aupportmg sievea aa well aa by,the air directly. R&am&-Les auteum ont eifectud dea desires de la temperature et de l'humidiuf de l'air dans et au-dessua d'une masse de sihcagel &h&ante et flui&lVe. Ila prouvent que, dana un sens perpendiculaire au aourant d'mr, la temperature et l'humuht.4 ne prdsentent w de gradient ; que la temperature du silicagel est pratuluement &ale B la temperature de l'au sortant puisque cette temperature eat md+endante de l'endroit dans l'apparerl; que la transmission de la substance et de la chaleur ne s'effectue que dana une couche trb nunce et entln que la chaleur est transmlse B la substance sohde tant par lea crrblea supportants que duectement par pair.
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A sucroselactose-starch granulation was used to study particulate motion and attrition in a fluid bed dryer. There is some classification of material in the dryer as drying proceeds; fine particles are dried faster and become less dense, and the less dry but denser large particles show some (althoug
## Abstract A drying process in a fluidized bed under vacuum conditions is experimentally and theoretically studied. A fluidized bed operating in reduced pressure presents a possibility for a better quality of production, with safer process conditions. A mathematical model is developed for the redu