NUMERICAL STUDY ON HOMOGENEOUS SO<sub>2</sub> OXIDATION IN HIGH TEMPERATURE CONDITIONS

Joanna Jójka; Paweł Czyżewski

Joanna Jójka Poznan University of Technology, Faculty of Machines and Transport
Paweł Czyżewski Poznan University of Technology, Faculty of Machines and Transport

Keywords: SO2, SO3, oxidation, CFD, Fluent, kinetic mechanism

Abstract

Significant content of SO₃ in exhaust gases generates difficulties in maintenance of metallurgical plants and large combustion installations. To minimize the range of this problem, numerical models of reacting flow can be introduced to the designed process. Modeling combustion and post combustion of SO₃ formation requires adding reaction mechanism of reactive mixture to flow equations. In this work three kinetic mechanisms of SO₂ oxidation have been used to predict SO₃ formation, expressed in SO₃ outlet concentration and SO₂ to SO₃ conversion rate. Physical model of flow through quartz glass tube, based on [Belo et al. 2014] experiment, has been created and implemented in Ansys Fluent. Difference between experimental data and model calculations results have been presented as a function of species concentration and temperature.

Keywords:
SO₂, SO₃, oxidation, CFD, Fluent, kinetic mechanism