Improved rotary film evaporator for concentrating organic fruit and berry puree

نویسندگان

چکیده

This paper reports the improved rotor-film evaporator with lower arrangement of separating space, auger-type discharge concentrated organic fruit and berry paste, preheating puree secondary steam. The working surface is heated by a flexible film resistive electric heater radiating type an insulating outer surface. Peltier elements installed in device make it possible to provide low-voltage power for exhaust fans from thermal fed processing preheated 8...10 °С heat product For experiment, blended apples, quince, black currants was used. structural mechanical properties have been determined when temperature changes within 55...75 °С, particular, effective viscosity varies range 22...6 Pa∙s, maximum shear stress ‒ 29...8 Pa. Effective regions concentration process established: Kmin=Vpaste/Vpuree=0.190; Kmax=Vpaste/Vpuree=0.725 When concentrating pastes initial solids content 9...15 % resulting (29...31 %), advisable apply load 0.048...0.121 kg/m2s. By calculation, reduction specific energy consumption heating volume unit has confirmed: – 547 kJ/kg over period 75 s, compared basic vacuum 1,090 kJ/kg, respectively, 1.08 hours. results could be useful designing evaporating equipment rotor-film-type devices order concentrate various blends raw materials under conditions using

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ژورنال

عنوان ژورنال: Eastern-European Journal of Enterprise Technologies

سال: 2021

ISSN: ['1729-3774', '1729-4061']

DOI: https://doi.org/10.15587/1729-4061.2021.237948