Determining of the influence of reactor parameters on the uniformity of mixing substrate components

Authors

DOI:

https://doi.org/10.15587/1729-4061.2020.217159

Keywords:

linear speed, uniformity of mixing, blade, friction coefficient, substrate humidity, fermentation

Abstract

One of the issues related to the fermentation of substrates made from biological raw materials in drum-type reactors is the difficulty of ensuring uniform mixing of their components, which adversely affects the quality of the compost produced.

Uniform mixing is achieved if the components of the material are fully dispersed at the free surface of the substrate segment. It was established that in order to fully disperse the particles of the substrate by a descending flow, it is necessary that the particles, which last fall from the blade, should reach the contact point of the drum’s shell and the free surface of the substrate. To describe the established conditions, a mathematical model has been built, which links the equation of the boundary of the blockage of substrate particles in the drum and their fall along a parabolic trajectory. The equations are given to determine the kinematic parameters of the mixing process, provided that the substrate particles are dispersed in the transverse and longitude cross-sections of the drum.

The result of solving the differential equations is the equation of the linear speed of particle movement on the curved surface of the drum blade at which their full dispersal at the free surface of the substrate segment is achieved.

In order to conduct this research, an experimental drum reactor was designed and manufactured. It was experimentally determined at which humidity values of the substrate and the angular velocity of the reactor drum the uniformity of the distribution of components in the substrate reaches maximum values while the resulting compost meets the acting requirements in terms of microbiological indicators. The adequacy of the mathematical model to the experimental data has been confirmed.

The reported results are important because knowing the physicochemical properties of the substrate makes it possible to set such parameters of the process and equipment at which the high uniformity of mixing of substrate components is ensured, which affects the compost quality

Author Biographies

Gennadii Golub, National University of Life and Environmental Sciences of Ukraine Heroyiv Oborony str., 15, Kyiv, Ukraine, 03041

Doctor of Technical Sciences, Professor

Department of Tractors, Automobiles and Bioenergosystems

Mykola Trehub, Bila Tserkva National Agrarian University Soborna sq., 8/1, Bila Tserkva, Ukraine, 09117

Doctor of Technical Sciences, Associate Professor, Head of Department

Department of mechanization and electrification of agricultural production

Anna Holubenko, Zhytomyr National Agroecological University Staryi blvd., 7, Zhytomyr, Ukraine, 10008

Assistant

Department of Electrification, Automation of Production and Engineering Ecology

Nataliya Tsyvenkova, Zhytomyr National Agroecological University Staryi blvd., 7, Zhytomyr, Ukraine, 10008 National University of Life and Environmental Sciences of Ukraine Heroyiv Oborony str., 15, Kyiv, Ukraine, 03041

PhD, Associate Professor

Department of Mechanics and Agroecosystems Engineering

Department of Tractors, Automobiles and Bioenergosystems

 

Viacheslav Chuba, National University of Life and Environmental Sciences of Ukraine Heroyiv Oborony str., 15, Kyiv, Ukraine, 03041

PhD, Associate Professor

Department of Tractors, Automobiles and Bioenergosystems

Marina Tereshchuk, Zhytomyr National Agroecological University Staryi blvd., 7, Zhytomyr, Ukraine, 10008

Postgraduate Student

Department of Mechanics and Agroecosystems Engineering

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Published

2020-12-31

How to Cite

Golub, G., Trehub, M., Holubenko, A., Tsyvenkova, N., Chuba, V., & Tereshchuk, M. (2020). Determining of the influence of reactor parameters on the uniformity of mixing substrate components. Eastern-European Journal of Enterprise Technologies, 6(7 (108), 60–70. https://doi.org/10.15587/1729-4061.2020.217159

Issue

Vol. 6 No. 7 (108) (2020): Applied mechanics

Section

Applied mechanics

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Copyright (c) 2020 Gennadii Golub, Mykola Trehub, Anna Holubenko, Nataliya Tsyvenkova, Viacheslav Chuba, Marina Tereshchuk

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