Drying Characteristics of Coriander Seed Particles in a Reduced Pressure Superheated Steam Fluidized Bed |
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| Authors: | B Kozanoglu Á Sánchez-Huerta J A Guerrero-Beltrán J Welti-Chanes |
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| Affiliation: | 1. Mechanical Engineering Department, Universidad de las Americas, Puebla, Mexicobulentu.kozanoglu@udlap.mx;3. Mechanical Engineering Department, Universidad de las Americas, Puebla, Mexico;4. Biotechnology and Food Engineering Department, Instituto Tecnológico de Estudios Superiores de Monterrey, Monterrey, Mexico |
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| Abstract: | Drying characteristics of coriander seed particles were experimentally analyzed in a reduced pressure superheated steam fluidized bed. The typical moisture gain, reported in some other studies during the warm-up period of the process, was reduced in most of the cases by supplying additional heat into the column. The experimental results demonstrated that the drying rate increases and the equilibrium moisture content decreases by increasing the operating temperature. However, variation of the operating pressure (40–67 kPa) and the superficial steam velocity (2.3–4.0 m/s) did not present significant effects on the moisture contents. The degree of superheating was found to be the most important parameter for the process. The experiments also showed that the equilibrium moisture content decreases upon increasing the degree of superheating. Finally, employing a reduced pressure superheated steam fluidized bed appears as an option to carry out drying processes at relatively lower temperatures. |
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| Keywords: | Fluidized bed drying Superheated steam drying Vacuum drying |
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