Evaluation of performance parameters in conventional reactor: application in industrial processes


  • Carlos Cesar Costa Júnior Universidade Federal de Itajubá
  • Luciano Jacob Correa Universidade Federal de Lavras




Agitation and mixing; Impellers; Mixing time; Energy consumption; Scale-up.


When a stirring and mixing system is not correctly designed and controlled, undesirable mixtures are obtained, which can lead to product losses and increased process costs. Therefore, the objective of this study is to evaluate a system of agitation and mixing that can generate experimental data for the aid of researchers and designers of industrial impellers. This system was evaluated using four different configurations of impellers (Rushton-Rushton; Rushton-Smith; Smith-Rushton and Smith-Smith) based on two fundamental performance parameters of the stirring system: mixing time and energy consumption. The mixing time was determined by temperature pulse method and the calculation of the power consumption was obtained from the literature equations. The performance parameters were evaluated in three different rotation frequencies: 300, 500 and 700 rpm. The configuration (4) showed a reduction in the mixing time of 36% (300 rpm), 63% (500 rpm) and 79% (700 rpm) when compared to the standard configuration (1). From the obtained results, it was possible to conclude that the configuration (4), obtained the lowest mixing time and lower power consumption of all the configurations evaluated. In addition, it can be determined that the stirring frequency of 500 rpm was the most adequate for this study.


BAILEY, James, OLLIS, Davis. - Biochemical Engineering Fundamentals. 2ed., McGraw-Hill, New York, 1986.

CORRÊA, Luciano Jacob, BADINO, Alberto Colli, CRUZ, Antonio José Gonçalves. - Mixing design for enzymatic hydrolysis of sugarcane bagasse: methodology for selection of impeller configuration. Bioprocess and Biosystems Engineering, 39:285–294, 2016.

GARAVITO, Ana Milena Torres - Determinação experimental do consumo de potência para impelidores âncora e helicoidal usando fluidos pseudoplásticos de alta viscosidade. UNICAMP, Dissertação de Mestrado, 81p, 2013.

JOAQUIM JUNIOR, Celso Fernandes, CEKINSKI, Efrain, NUNHEZ, José Roberto, URENHA, Luiz Carlos – Agitação e mistura na indústria. Editora LTC, Rio de Janeiro, 2012.

MAGELLI, Franco, MONTANTE, Giuseppina, PINELLI, Davide, PAGLIANTI, Alessandro. - Mixing time in high aspect ratio vessels stirred with multiple impellers. Chemical Engineering Science, 101:712-720, 2013.

SOUZA, Edimilson - Consumo de potência para impelidores rápidos aplicados em processos de agitação e mistura. UNICAMP, Tese de Doutorado, 778p, 2011.

TAN, Rung-Kai., EBERHARD, Werner, BÜCHS, Jochen - Measurement and characterization of mixing time in shake flasks. Chemical Engineering Science, 66:440-447, 2011.

NORWOOD, K.W., METZNER, A.B. – Flow patterns and mixing rates in agitated vessels. A. I. Ch. E. J. 6:432-437, 1960.



How to Cite

COSTA JÚNIOR, C. C.; CORREA, L. J. Evaluation of performance parameters in conventional reactor: application in industrial processes. Research, Society and Development, [S. l.], v. 8, n. 3, p. e3783745, 2019. DOI: 10.33448/rsd-v8i3.745. Disponível em: https://www.rsdjournal.org/index.php/rsd/article/view/745. Acesso em: 23 feb. 2024.