<abstract xmlns="http://www.w3.org/1999/xhtml">An urgent problem is drying and processing of the wet dispersed waste, obtained in the production of food products, which can then be efficiently used as a fertiliser, for feeding livestock or as biofuel. A new design of a vibrating fluidised bed dryer has been developed, which, with low energy consumption, provides a pre-set productivity and the required final moisture content. The process of vertical oscillations of the body of a vibration dryer, together with the food waste contained in it, is analysed analytically, the necessary equivalent scheme is built, on the basis of which differential equations of the vertical oscillations of the body are compiled, their analytical solutions are obtained, and a numerical calculation is performed on a PC using the developed program. Rational parameters of the vibration dryer, providing vibroboiling of the mass of the food waste, have been determined: the body mass m = 250 ... 510 kg; the debalance mass md<italic>=</italic> 10… 15 kg; the number of revolutions of the debalance electric motor nd<italic>= 1950 ... 2650 rpm ∙ min</italic>∙1; maximum stiffness of the support springs Cp<italic>= 8</italic>∙105 N∙m–1; the diameter of the centre of mass of the debalances dd<italic>= 0.01 m. In addition, as a result of the</italic> thermophysical theoretical and experimental studies of the vibration drying process, the following optimal design and technological parameters of the vibration dryer were obtained: the heat transfer area <italic>St.p.n= 4.15 m</italic>2; the radius of the heating pipe <italic>rt= 0.1 m</italic>; the length of the heating pipe <italic>lt = 3 m</italic>; the number of heating pipes <italic>nt= 50</italic>; the heat transfer coefficient <italic>Kp= 2500</italic>; the final temperature of the dried waste to2<italic>= 100 ºС</italic>.</abstract>

An urgent problem is drying and processing of the wet dispersed waste, obtained in the production of food products, which can then be efficiently used as a fertiliser, for feeding livestock or as biofuel. A new design of a vibrating fluidised bed dryer has been developed, which, with low energy consumption, provides a pre-set productivity and the required final moisture content. The process of vertical oscillations of the body of a vibration dryer, together with the food waste contained in it, is analysed analytically, the necessary equivalent scheme is built, on the basis of which differential equations of the vertical oscillations of the body are compiled, their analytical solutions are obtained, and a numerical calculation is performed on a PC using the developed program. Rational parameters of the vibration dryer, providing vibroboiling of the mass of the food waste, have been determined: the body mass m = 250 ... 510 kg; the debalance mass md= 10… 15 kg; the number of revolutions of the debalance electric motor nd= 1950 ... 2650 rpm ∙ min∙1; maximum stiffness of the support springs Cp= 8∙105 N∙m–1; the diameter of the centre of mass of the debalances dd= 0.01 m. In addition, as a result of the thermophysical theoretical and experimental studies of the vibration drying process, the following optimal design and technological parameters of the vibration dryer were obtained: the heat transfer area St.p.n= 4.15 m2; the radius of the heating pipe rt= 0.1 m; the length of the heating pipe lt = 3 m; the number of heating pipes nt= 50; the heat transfer coefficient Kp= 2500; the final temperature of the dried waste to2= 100 ºС.

Theoretical Studies of the Vibration Process of the Dryer for Waste of Food

National University of Life and Environmental Sciences of

Vinnytsia National Agrarian University of

Latvia University of Life Sciences and Technologies

Dmytro Motornyi Tavria State Agrotechnological University

Rural Sustainability Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Theoretical Studies of the Vibration Process of the Dryer for Waste of Food"}

An urgent problem is drying and processing of the wet dispersed waste, obtained in the production of food products, which can then be efficiently used as a...

Theoretical Studies of the Vibration Process of the Dryer for Waste of Food

Published Online: Dec 10, 2020

Page range: 32 - 45

Received: Oct 05, 2020

Accepted: Nov 09, 2020

DOI: https://doi.org/10.2478/plua-2020-0015

Keywords
waste, dehydration, vibrations, vibroboiling, model

© 2020 Volodymyr Bulgakov et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Theoretical Studies of the Vibration Process of the Dryer for Waste of Food

Published Online: Dec 10, 2020

Page range: 32 - 45

Received: Oct 05, 2020

Accepted: Nov 09, 2020

DOI: https://doi.org/10.2478/plua-2020-0015

Keywordswaste, dehydration, vibrations, vibroboiling, model

© 2020 Volodymyr Bulgakov et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
waste, dehydration, vibrations, vibroboiling, model