CFD modeling of two immiscible fluids mixing in a commercial scale static mixer

Abstract

-A Computational Fluid Dynamics model based on the Eulerian formulation for multiphase flow was developed to model the mixing hydrodynamics of two immiscible fluids in a commercial scale static mixer. The two immiscible liquids were condensate and caustic solutions and were considered as two phases that are interpenetrating each other. The aim of this study was to develop a comprehensive Computational Fluid Dynamics model for predicting the impact of hydrodynamic parameters such as length, diameter and the arrangement of the corrugated plates of a static mixer on the degree of mixing and the pressure drop of the mixture. The model has been evaluated by comparing predictions of the degree of mixing and the mixture pressure drop with the same data available for the static mixer of the desulfurization plant of the Kharg petrochemical company. It has been shown that the predictions of the developed model are well adapted to the experimental data.

Study of Parameters Affecting the Coalescence of Dimethyl Disulfide Drops in a Merox Unit

“…All chemicals had a purity of more than 99.9%. In this process, three sodium hydroxide solutions of 10, 12 and 14% were used, which are close to those in a real Merox process (Abdolkarimi and Ganji, 2014). Table 1 lists the measured physical properties of the liquid phases used.…”

Direct numerical simulations of liquid–liquid dispersions in a SMX mixer under different inlet conditions

“…Numerous computational studies have been carried out in this area as well, implementing several numerical frameworks such as two-phase Eulerian turbulent modelling through LES Jaworski, 2009, 2010] and RANS approaches [Abdolkarimi andGanji, 2014, Vasilev andAbiev, 2018a,b], Eulerian-Lagrangian [Haddadi et al, 2020], Lattice Boltzmann Method [Leclaire et al, 2020] and Population Balance Modelling (PBM) [Azizi and Taweel, 2011, Lebaz and Sheibat-Othman, 2019, Vikhansky, 2020. Usually, these works engage in similar investigations as the experimental studies, providing further insights into the hydrodynamics and occasionally coupling Lagrangian particle tracking analysis or DSD estimations using PBM.…”

Numerical investigation of turbulent flow and heat transfer characteristics in the improved Kenics static mixer

“…The fluid repeatedly splits and recombines as it moves through the mixer, leading to thorough mixing and homogenization. Therefore, SMs are used for both mixing needs [1][2][3][4][5] and reaction processes. 6,7 Flow in an empty pipe can cause some radial mixing, but in most cases, an impractical length of pipe is needed to provide sufficient mixing.…”