Advanced drying technologies by Tadeusz Kudra

By Tadeusz Kudra

Content material: basic dialogue: traditional AND NOVEL DRYING suggestions want for complex Drying applied sciences class and choice standards: traditional as opposed to Novel applied sciences Innovation and tendencies in Drying applied sciences chosen complex DRYING applied sciences Drying on Inert debris Impinging circulate Drying Drying in Pulsed Fluid Beds Superheated Steam Drying Airless Drying Drying in Mobilized Beds Drying with surprise Waves Vacu Jet Drying procedure Contact-Sorption Drying Sonic Drying Pulse Combustion Drying warmth Pump Drying Fry-Drying chosen thoughts FOR DRYING AND DEWATERING Mechanical Thermal Expression Displacement Drying Vapor Drying Slush Drying Atmospheric Freeze-Drying Spray-Freeze-Drying Refractance Window Carver-Greenfield technique HYBRID DRYING applied sciences Microwave-Convective Drying with Cogeneration Microwave-Vacuum Drying Filtermat Drying Spray-Fluid Bed-Vibrated Fluid mattress Dryer mixed Filtration and Drying Radio-Frequency Drying with 50 O know-how Radio Frequency-Assisted warmth Pump Drying Radio Frequency-Vacuum Drying Miscellaneous Hybrid applied sciences different innovations exact Drying applied sciences Index

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The central part of the grid is closed with a conical solid insert. This particular configuration of a drying chamber creates hydrodynamic conditions as in a spouted bed although instead of the central air jet the spouting air is a ring-shaped stream adjacent to the chamber wall. As the air ring emerges from the inclined vanes, the spouting air swirls around the conical insert. If the air velocity is set properly, the inert particles picked up by the air stream at the grid zone follow the spiral trajectory to the top of the conical insert.

I. duPont de Nemours and Company, Inc. (Wilmington, Delaware). , Method of drying of pasty products, Russian Patent 1024668, 1981. and bacteria) is yet a challenging task because of product degradation. The positive or negative results depend on the following main factors that result from the drying mechanism (Kudra and Strumillo, 1998): 1. Mechanical effect of inert particles due to wall-to-bed and particleto-particle impacts and attrition owing to circulation of the bed. ). 2. Thermal effect due to convective and contact heat transfers that depends mainly on the heat-transfer rate, bed hydrodynamics, properties of drying material, and dryer configuration.

Detailed information and an example of the QLR analysis for drying in a jet spouted bed can be found in the reference literature (Markowski, 1992, 1993a, 1993b; Kudra and Strumillo, 1998). 5 Heat pump dryer with a fluidized bed of inert particles. 5, it follows that success in drying of living microorganisms can be achieved when reducing any of the components that contribute to quality losses. , 1998). 5 mm polypropylene beads. The inlet air temperature was kept below 35°C by the use of a classical heat pump circuit (see Chapter 15).

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