Simulation of an orifice scrubber performance based on Eulerian/Lagrangian method

• Published in: Journal of hazardous materials Vol. 100; no. 1; pp. 13 - 25
• Main Authors: Mohebbi, A, Taheri, M, Fathikaljahi, J, Talaie, M.R
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 27.06.2003; Elsevier
• Subjects: Air Movements; Air Pollution - prevention & control; Applied sciences; Atmospheric pollution; Eulerian/Lagrangian method; Exact sciences and technology; Forecasting; General processes of purification and dust removal; Models, Theoretical; Orifice scrubber; Particle Size; Pollution; Prevention and purification methods; Venturi scrubber; Venturi scrubber; Eulerian/Lagrangian method; Orifice scrubber
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/S0304-3894(03)00066-9

A mathematical model based on Eulerian/Lagrangian method has been developed to predict particle collection efficiency from a gas stream in an orifice scrubber. This model takes into account Eulerian approach for particle dispersion, Lagrangian approach for droplet movement and particle-source-in-cell (PSI-CELL) model for calculating droplet concentration distribution. In order to compute fluid velocity profiles, the normal k− ε turbulent flow model with inclusion of body force due to drag force between fluid and droplets has been used. Experimental data of Taheri et al. [J. Air Pollut. Control Assoc. 23 (11) (1973) 963] have been used to test the results of the mathematical model. The results from the model are in good agreement with the experimental data. After validating the model the effect of operating parameters such as liquid to gas flow rate ratio, gas velocity at orifice opening, and particle diameter were obtained on the collection efficiency.