The article is devoted to flue gas cleaning, using fly ash as an example. Electrocyclone can be employed as gas-cleaning equipment. The electrocyclone operation can be intensified by reducing re-entrainment. The laboratory model of the annular channel of the electrocyclone is used to show the possibility of reducing re-entrainment by using the shaped elements of various designs on the collecting electrodes. Aerosol industrial emissions can be reduced by using an electrocyclone with modified collecting electrodes.
The article deals with the experimental study of the mass transfer of acetic acid from the dispersed phase (butyl acetate) to the continuous phase (water). The experiments were carried out on a laboratory column with single floating drops. The presence of the Marangoni effect during the movement of drops and its influence on the trajectories of movement of drops and the kinetics of mass transfer during extraction are shown. The influence of the Marangoni effect is most clearly observed when the driving force of the process is 0.1...0.2 mol/l.
This article presents the results of experimental studies of spontaneous interfacial convection with the mass transfer in liquid-liquid extraction systems. For detection and characteristics of spontaneous convection experimental techniques was developed and tested, which allow the determining of surfactants local concentration on the interfacial surface. The paper contains a detailed description of the following detection methods: visual, kinetic, test of mass transfer, correlation spectroscopy and using of strong surface-active substances which are capable to suppress Marangoni convection. The developed techniques provide detection and receiving of interfacial convection characteristics.
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