Briankin S. Reduction of the man-made load on the environment from dust emissions from chemical and processing industries

The thesis is devoted to the environmental safety of atmospheric air on the basis of improving the methodological approach to the development of complex dust removal at the outlet of the dust-cleaning system due to the proposed structure of dust-gas systems. Research and theoretical substantiation of the phase distribution process in structural treatment subsystems is an urgent scientific and applied problem, the solution of which will improve environmental safety in conditions of man-made dust pollution of atmospheric air. The aim of the research is to achieve a complex effect of the degree of cleaning from dust at the exit from the dust cleaning system, based on the development of the structure of combined dry dust cleaning systems, improving environmental safety as a result of reducing micro-saw particles in emissions. To achieve this aim, the design of a new type of dust collection systems has been developed and substantiated, combining the principles of operation of centrifugal and louvered-vortex devices, heterogeneous reactors for a gas-solid system with two flows that are in cyclones of different types, with chambers for preliminary collision of gas and dust flows. Provided principles for improving dust collection systems used as the main apparatus of the vortex chamber. Physical models of combined dust collection systems for given initial conditions have been created. On the basis of theoretical provisions regarding the separation of the phases of particles in dust collectors and experimental data, the performance of the proposed combined systems has been substantiated. The expediency of additional introduction into the subsystem of engineering and technical management to reduce the man-made hazard of the dry cleaning process, additional measures to change the phase distribution of dust particles during cleaning have been proved. Based on the results of experimental studies of the process of dry cleaning of a gas and dust stream according to an appropriate physical model, the mechanisms of phase separation and parameters related to the coagulation of dust particles, destruction of gas impurities have been established, which makes it possible to obtain a synergistic effect as a result of cleaning the gas and dust stream from dust.