چكيده به لاتين
In the present study, the operating and geometric parameters of eductor column consist of 3 nozzle diameters, 1-3 mm, 3 venturi with different diameters, 10-30 mm, 3 distance between throat and nozzle tip, 10-30 mm, the ratio of the two phases and jet velocity empirically studied. Finally, the RSM software was modeled and extracted. The mathematical relation is presented for the precise estimation of the Sherwood number for the extraction of salt from gasoline, using the least squares mean method. Given the dependence of the Sherwood number on the mass transfer coefficient and the existing parameters, the modeling result shows that the mass transfer coefficient affected by dimensional numbers such as Reynolds number, throat diameter, nozzle diameter, distance between throat and nozzle tip and the ratio of the two phases. Finally, the predicted mass transfer coefficient shows that the equation is in good agreement with experimental data. According to the observations, the increase in the diameter of the nozzle apart from changes in other parameters increased the mass transfer coefficient, but the increase in the diameter of the throat did not change significantly in the mass transfer coefficient, however, the lower distance from the nozzle diameter to the throat diameter also increased the mass transfer coefficient. Also, the extraction efficiency in the gasoline-salt-water system is 25-92%. RSM studies have optimum conditions for having maximum mass transfer in nozzle sizes of 2.3 mm, throat diameter of 10.6 mm, distance between throat and nozzle tip 13.6 mm, the ratio of two phases to 41.5 and jet velocity of 5.6 m/s had.
