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Drying Suspensions in a Pulsed Fluidized Bed of Inert Particles

Reyes, A.; Herrera, N. x.; Vega, R.

Drying technology. VOL 26; NUMBER 1, ; 2008, 122-131 -- Taylor & Francis (pages 122-131) -- 2008

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  • Title:
    Drying Suspensions in a Pulsed Fluidized Bed of Inert Particles
  • Author: Reyes, A.;
    Herrera, N. x.;
    Vega, R.
  • Found In: Drying technology. VOL 26; NUMBER 1, ; 2008, 122-131
  • Journal Title: Drying technology.
  • Subjects: LCC: TP363; Dewey: 660.28426
  • Publication Details: Taylor & Francis
  • Language: English
  • Abstract: The drying of carbohydrate suspensions on polypropylene particles in a pulsed fluidized bed was studied by means of a 25 experimental design, to determine the effect of the air flow and temperature, suspension flow rate, and free section and rotating speed of the rotary plate on the Nusselt number, the moisture content of the product, and the percentage of solids retained inside the bed (which were minimized to 4.9 and 14.4%, respectively) with an air flow of 600 m3/h at 90°C and 720 mmHg, a suspension flow rate of 6 L/h, and a plate with 6% free section, rotating at 50 rpm. Additionally, the effects of temperature, air flow, and suspension flow rate on the residence time distribution (RTD) were determined, using the stimulus-response methodology. The RTD was represented by 1.1 to 2 tanks in series, according to this model. The mean residence time of the dried carbohydrate particles was between 5.4 and 8.2 min. Finally, an egg suspension could be dried at 4 L/h, with air at 90°C, with a mean residence time about 50% longer that that found for drying carbohydrate suspensions.
  • Identifier: Journal ISSN: 0737-3937
  • Publication Date: 2008
  • Physical Description: Electronic
  • Accrual Information: Monthly
  • Shelfmark(s): 3630.226500
  • UIN: ETOCRN221334850

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