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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.

Experimental research and CFD analysis of flow parameters in a SCR system for the original part and WALKER’s replacement

Kurzydym Damian, Klimanek Adam, Żmudka Zbigniew

Combustion Engines

2019

R. 58, nr 4

13--20

The article presents the results of experimental research and their comparison with CFD simulations for the original selective catalytic reduction system and WALKER replacement. The research was performed to develop the WALKER universal mixer. The SCR prototype without mixer and with the proposed mixer were tested and compared with the original VW part. The next step was reverse engineering, which consisted in scanning the tested parts with a laser and processing their point cloud in Leios2 program. Reverse engineering has allowed the reconstruction of 3D geometry of the tested parts in the Catia v5 program and then preparation their models for computational fluid dynamics. Numerical simulations were carried out in the Ansys Fluent program, thanks to which several quantities were determined e.g. uniformity index of gas flow through the monolith and coefficient of variation as a measure of mixing degree, which have a significant impact on the design of the mixer and the SCR system.