Kinetic analysis of CO2 hydrate formation by the use of different impellers

Longinos S. N., PARLAKTUNA M.

REACTION KINETICS MECHANISMS AND CATALYSIS, vol.133, no.1, pp.85-100, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 133 Issue: 1
  • Publication Date: 2021
  • Doi Number: 10.1007/s11144-021-01968-z
  • Journal Name: REACTION KINETICS MECHANISMS AND CATALYSIS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.85-100
  • Middle East Technical University Affiliated: Yes

Abstract

This study investigates the effects of types of impellers with the use of full baffle in carbon dioxide gas hydrate formation. In single impeller experiments initial hydrate formation rate is higher with the use of rushton turbine showing the better interaction between gas and liquid in radial flow due to better pumping capacity and good shear field among pitched blade turbine, triangle turbine and marine propeller, with value 298 x 10(-8) mol/s. In dual impeller experiments mixed flow experiments and more specifically triangle turbine show higher values in rate of hydrate formation with maximum value 370 x 10(-8) mol/s. In both single and dual impeller experiments, RT experiments formed gas hydrates for fewer periods than any other impeller type due to high amount of generated heat. Furthermore, in both single and dual impeller experiments the PBTD experiment consumes more energy compared to any other of the five experiments.