Abstract
In large-sized recycling plants (with the processing capacity of 360 ton/day) where disassembled wooden wastes are chipped by crusher and reproduced into compress - formed board through their drying process, it is a tangible serious problem on-site that exhausted gas emitted from them causes erosion at impellers of the fan, duct and cyclone separator. In this report, we show the relation between operating conditions and erosion, which has been made clear by observing eroded impellers of the fan. To be concrete, velocity of air stream has a great influence on the development of erosion; the value of 30 m/s is one dividing point and has been proved to be a value of great importance. Regarding the difference of quality of materials, we have examined how the each one is affected by erosion, including the validity of data accumulated from erosion experiments at the laboratory. Herein, we make a report on the results of them as well.
