Experimental research on the work of centrifugal filter when eliminating solid particles from clinker cooling system

Abstract

The elimination of solid particles from a clinker cooling system under industrial conditions in Moldova cement plant in Ribnica city is being analysed. In order to assess the influence of solid particles on the performance of six-channeled centrifugal filter, the general elimination effectiveness of solid particles and the one according to dispersion with the initial concentration of dust – 2.37 g/m3 were examined. The dusty amount of gas flow 0,001 %, was extracted by a ventilator ВЦ 6-28-3.15. During the experiment, the amount of the gas under cleaning was 140 m3/h at 60 – 100 ºC. When the productivity of centrifugal ventilator is low, the amount of gas flow in the channels of the machine was 11 m/s. The identified aerodynamic resistance of the centrifugal filter ЦФ 2-6-02 was – 480 Pa. To measure solid particles a seven-step impactor model NIIOGaz was used which work is based on the identification of the size of particles in input and output air paths of gas flow of the centrifugal filter. The analysis of dispersal composition allowed indentifying that the median of solid particles at the input of gas flow was 20 µm, output – 15 µm. General effectiveness of 91 % of the centrifugal filter was identified. This paper compares the results of the experiment to the performance effectiveness of battery multicyclone and presents the methodology for the calculation of effectiveness. In addition, calculations of the effectiveness of typical cyclones demonstrating 500 Pa aerodynamic resistance are presented compared to the elimination rate of the centrifugal filter ЦФ 2-6-02.