The erosivity of atmospheric fluidized bed combustor particles 600 μm in diameter

The erosivity of the bed material particles from the Pt. Tupper atmospheric fluidized bed combustor were studied in a laboratory erosion-corrosion tester. As-received particles 600 μm in diameter were tested at velocities and temperatures somewhat higher than those that occur in actual fluidized bed combustors. It was determined that the larger size bed material particles were generally more erosive than smaller 130 μm Al 2O 3 and SiC particles used in earlier tests. Under all test conditions a segmented scale formed on the base metal and was removed by a cracking and chipping mechanism.