Erosion of Single Grais in the Falling Two-Phase Stream

摘要

The process of erosion of coal and ash particles is one of the decisive occurrences which influence the efficiency of combustion in boilers with circulating fluidized bed. The results of relating researches of the mass decrement of particles due to erosion placed in two-phase stream are presented in this article. The measurements were realized on he gravitational experimental position in environment temperature the aim of our researches was an explanation of the character of the flow around a single large particle by a stream of the particles of loose material with given granulation and concentration. The realized experiment allowed an estimation of the influence of the flow stream intensity, type and granulation of loose material, size of examined grain and time of influence erosion on speed of mass decrement examined grains.