<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Critical impeller rotational speeds for having a solid suspension in a liquid and for gas dispersion in the slim vessel with two independently driven impellers were determined. An A-315 impeller functioned as the lower impeller whereas a Rushton turbine was fixed higher with gas being fed right below the latter. We investigated what influence on this rotational speed was had by the distance between the impellers, their rotational direction, solid concentration, solid particle size and gas flow rate. Results obtained for the twoand three-phase systems were compared. In the three-phase systems, we also measured the power input in order to assess the efficiency of mixing.</p></abstract>

Critical impeller rotational speeds for having a solid suspension in a liquid and for gas dispersion in the slim vessel with two independently driven impellers were determined. An A-315 impeller functioned as the lower impeller whereas a Rushton turbine was fixed higher with gas being fed right below the latter. We investigated what influence on this rotational speed was had by the distance between the impellers, their rotational direction, solid concentration, solid particle size and gas flow rate. Results obtained for the twoand three-phase systems were compared. In the three-phase systems, we also measured the power input in order to assess the efficiency of mixing.

Gas Dispersion and Solid Suspension in Liquid by Independently Driven Impellers

Institute of Thermal and Process Engineering, Faculty of Mechanical Engineering

Technical Transactions

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

{"article-title":"Gas Dispersion and Solid Suspension in Liquid by Independently Driven Impellers"}

Critical impeller rotational speeds for having a solid suspension in a liquid and for gas dispersion in the slim vessel with two independently driven impellers...

Gas Dispersion and Solid Suspension in Liquid by Independently Driven Impellers

Published Online: May 26, 2020

Page range: 129 - 139

DOI: https://doi.org/10.4467/2353737XCT.17.076.6433

Keywords
mixing, two- and three-phase systems

© 2020 Jerzy Kamieński et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

Gas Dispersion and Solid Suspension in Liquid by Independently Driven Impellers

Published Online: May 26, 2020

Page range: 129 - 139

DOI: https://doi.org/10.4467/2353737XCT.17.076.6433

Keywordsmixing, two- and three-phase systems

© 2020 Jerzy Kamieński et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 Public License.

Keywords
mixing, two- and three-phase systems