Power characteristics and mass transfer of rotor injectors in a water physical model of an aluminum degassing ladle
Por:
Posadas-Navarro, David Israel, Gonzalez-Rivera, Carlos, Ramirez-Argaez, Marco Aurelio, Ascanio, Gabriel
Publicada:
1 mar 2023
Ahead of Print:
1 ene 2023
Resumen:
A comparative experimental study of a physical model of a stirred ladle
for a rotor-injector aluminum degassing system in the turbulent regime
has been carried out. A quantitative analysis of the gaseous oxygen mass
transfer to the water in a physical model is per-formed by evaluating
the power consumption and mass transfer capacity employing the typical
methods used in mechanically stirred tanks. Three rotor injector devices
were compared, including two conventional designs and one new rotor
design. The rotors were evaluated as a function of the rotational speed
and gas flow rates. The conventional rotors exhibited similar
performance, while the new design consumed more power when op-erating at
high gassing flow rates and rotational speeds resulting in a higher
breakup rate of bubbles and promoting a better formation of tiny
bubbles, which are better distributed over the entire ladle. This
behavior avoids bubbles rising freely to the free surface; so that the
gas hold-up increases leading to an improved mass transfer capacity when
using this rotor-injector. The results reported in this work agreed with
previously reported works in the literature.(c) 2023 Institution of
Chemical Engineers. Published by Elsevier Ltd. All rights reserved.
Filiaciones:
Posadas-Navarro, David Israel:
Instituto de Ciencias Aplicadas y Tecnología, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Mexico City, 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Ciencias Aplicadas & Tecnol, Ciudad Univ, Mexico City 04510, Mexico
Gonzalez-Rivera, Carlos:
Universidad Nacional Autónoma de México, Departamento de Ingeniería Metalúrgica, Facultad de Química, Edificio D, Circuito de los Institutos, Ciudad Universitaria, Mexico City, 04510, Mexico
Univ Nacl Autonoma Mexico, Dept Ingn Met, Fac Quim, Edificio D,Ciudad Univ, Mexico City 04510, Mexico
Ramirez-Argaez, Marco Aurelio:
Universidad Nacional Autónoma de México, Departamento de Ingeniería Metalúrgica, Facultad de Química, Edificio D, Circuito de los Institutos, Ciudad Universitaria, Mexico City, 04510, Mexico
Univ Nacl Autonoma Mexico, Dept Ingn Met, Fac Quim, Edificio D,Ciudad Univ, Mexico City 04510, Mexico
Ascanio, Gabriel:
Instituto de Ciencias Aplicadas y Tecnología, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Mexico City, 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Ciencias Aplicadas & Tecnol, Ciudad Univ, Mexico City 04510, Mexico
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