Modeling the hydrodynamics of stationary phase interaction showed that with an increase in the flow rate of the disperse phase at a fixed drop diameter, the interfacial surface increases proportionally up to a certain limit - transition from dropwise condensation to the flow mode. Three versions of formation of a two-phase structure of the streams in the extraction column in dynamic conditions in dispersion of one of the phases were analyzed. It was found that a stream structure with the most developed interface of the continuous disperse phases is formed in an extraction column with contacting equipment in the form of gauze packing with turbulizers.