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Email: mozisdom@163.com
Telephone: +86-0519-88768880
Web: www.mozisdom.com
Mobile: +86-1599 5555 375
Add: No.586, Changhe Road, Zhenglu Town, Tianning District, Changzhou City, Jiangsu Province, P.R.China.
Fluid Bed Dryer BagsHome > News > Fluid Bed Dryer Bags
Drying of beans in a pulsed fluid bed dryer: Drying kinetics, fluid-dynamic study and comparisons wi
2018-06-27 13:00:07
Key Words:Drying of beans in a pulsed fluid bed dryer: Drying kinetics, fluid-dynamic study and comparisons wi
Fresh carioca beans ( Phaseolus vulgaris ) were submitted to convective
drying in a pulsed fluidized bed (PFB) dryer. A full factorial design
was developed in order to analyze the effects of the following process
variables on the kinetic parameters of the Page’s equation: inlet air
temperature, airflow rate and frequency of pulsation. The only
significant variable was the inlet temperature of air. At 6002°C, drying
was also performed under conventional fluidization. No difference was
observed between the drying curves under pulsed and conventional
fluidization: therefore, due to the lower pumping requirement, energy
savings can be achieved with the pulsed fluidization technique without
affecting the production yield. Complementary fluid-dynamic evaluation
showed that the maximum pressure drop is approximately the same in both
regimes. However, under pulsed fluidization that maximum value is
affected by the initial bed height and slightly by the frequency of
pulsation.
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