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Determination of an axial gas cyclone separator cut-off point by CFD numerical modeling

Ryfa Arkadiusz, Tokarski Mieszko, Adamczyk Wojciech, Klimanek Adam, Bargiel Paweł, Białecki Ryszard, Kocot Michał, Niesler Marian, Kania Harald, Stecko Janusz, Czaplicka Marianna

Archives of Thermodynamics

2023

Vol. 44, no 4

535--562

This paper deals with the numerical simulation of a pilot-scale axial cyclone separator. The main purpose of this paper is to develop a numerical model that is able to foresee the cyclone separator cut-off point. This is crucial in blast furnace gas installation to capture large particles containing carbon and iron, while allowing smaller particles such as zinc and lead to pass through. The cut-off point must be designed to give a sufficiently high zinc and lead content in the sludge created after the second cleaning stage. This allows the sludge to become a commercial product. To design this cut-off point, an investigation of the influence of inlet gas velocity, temperature, and the angle of guiding vanes at the inlet was done. The developed CFD model was validated against experimental data on the fractional efficiency of the cyclone separator. The results were in good agreement with the experimental data for all parameters tested. The behavior of the particles inside the cyclone was also physically correct.