Використання кавітаційних технологій для нейтралізації кислих середовищ. Ефективність процесу

In this work, a comparison of various methods of neutralization of acidic environments is provided, their advantages and disadvantages are determined. The purpose of this work is to determine the efficiency of acid condensate neutralization by the method of hydrodynamic cavitation, for which theoretical and experimental studies were conducted. Neutralization of acidic liquid environments by the proposed method allows to significantly reduce the content of dissolved gases in the liquid without adding chemical reagents with moderate energy consumption and leads to a change in the pH of the medium towards the alkaline limit. The change in pH, confirmed by experimental studies, is primarily associated with the removal of soluble gas, which is contained in the form of bubbles up to 5 μm in size. The results of theoretical studies of processing in a rotary-pulsation apparatus are given, a number of technological parameters are determined, including pressures in the channel of the rotary apparatus, the potential for the growth of microbubbles at a given processing mode is established. According to the obtained theoretical data regarding the conduct of the process in the proposed processing modes, the possibility of removing bubbles with a limiting size of 0.6 μm and more has been established. The analysis of experimental data showed that the main part of dissolved gases can be removed in the first minutes of treatment, which is connected with the priority removal of bubbles of the largest sizes, which contain the largest specific amount of carbon dioxide. The limit sizes of the CO2 bubble have been established, which allows to remove the use of this technology according to the experimental data and the total volume of carbon dioxide removed during processing.