Comparison of technical characteristics of a multi-vortex separator with cyclones of various modifications

Abstract

RELEVANCE. Cyclone separators are used to separate solid dust particles from the air entering the turbine. The key factors in their selection are pressure drop and efficiency. Research aimed at improving these indicators while preserving the other advantages of cyclones, as well as the development of new dust and gas cleaning devices that are not inferior to them, are relevant. THE PURPOSE. Comparison of the technical characteristics of a multi-vortex separator with cyclones of various modifications on the efficiency of separation of particles from a dusty medium, the Froude criterion and the Euler criterion. METHODS. It carried the research out using modern methods of recording parameters on a laboratory stand. RESULTS. The fractional efficiency of separation of solid particles with a size from 1 to 80 microns from the gas stream of a multi-vortex separator is higher than cyclone separators: SK-CN-24, CN-11, CN-15, CN-24. An analysis of the efficiency according to the Froude Fr criterion similarly showed that a multi-vortex separator is preferable to cyclones UC-38-250, UC-38-500, UC-38-750, UC-38-850, SCN-40 and CN-11-400. We establish that with an increase in Fr, the efficiency increases. According to the Euler Eu criterion, it can be established that the use of a multi-vortex separator is carried out with lower energy costs relative to cyclones of the UC modifications with a body diameter of 500 mm or more, SCN-40 and CN-11-400. CONCLUSION. The conducted studies show that the use of a multi-vortex separator can be considered as a replacement for cyclone separators for cleaning the cyclic air of gas turbine installations. Advantages – simplicity of design, absence of friction of vortices on the walls of the separator, low value of the Euler criterion, efficiency close to 100% when capturing particles with a diameter of over 6 μm.