Articles
Hydrodynamics Research of a Stabilized Flow in a Continuous Bioreactor
Authors:
Gennady B. Pischikov, Anton V. Mankov
Abstract:
The research aim is to study the flow hydrodynamics of liquid technological substrates, including suspensions, in continuous-acting bioreactors using the device example for champagne wine in a continuous flow. This study is necessary to identify the possibility of optimizing the flow structure in reactors with free volumes in their cylindrical part. The aim of the flow structure optimization is to increase the equipment efficiency by intensifying biochemical processes based on the liquid substrate interaction with microorganisms. Since it is impossible to measure the fragments movement speed of the process fluid flow at different points of the reactor directly, a man run the study on a physical model using the generally accepted method of large-scale hydrodynamic similarity. The researchers assessed the nature and structure of the model liquid flow by the change in the indicator concentration introduced into the input section of the model apparatus at the specified sampling points. As a numerical assessment criterion reflecting the nature of the hydrodynamic structure of the flow, the authors used the indicator concentration dispersion coefficient of the values, calculated on the basis of the experimental data obtained. They studied the flow hydrodynamics on an apparatus model operated in the industrial production and modernized based on the first experiments results. As a research result, there is the significant rate inequality of the macro process fluid volumes in the longitudinal direction of flow in the operated devices. Such a flow structure does not meet the requirements of optimal biotechnological processes. To increase the equipment efficiency the researchers implemented the device equalizing the rate of the flow components. The hydrodynamics study after installing stabilization device in the model showed a change in the flow structure towards its optimization, the flow character tended to be ideal in the approximate piston mode. The flow stabilizer devices introduction in the cylindrical part of the apparatus will significantly increase the equipment efficiency by improving the flow hydrodynamics and, as a result, activating the biochemical interaction of production substrates with microorganisms.
Keywords:
bioreactor; flow; hydrodynamics; optimization; indicator; model
For citation:
Gennady B. Pischikov, Anton V. Mankov. Hydrodynamics Research of a Stabilized Flow in a Continuous Bioreactor. Индустрия питания|Food Industry. 2021. Vol. 6, No. 4. Pp. 5–15. DOI: 10.29141/2500-1922-2021-6-4-1
