Strength Recovery Boiler Fireside Deposits at High Temperatures, 1998 Engineering Conference Proceedings

The high temperature strength of fireside deposits prepared from precipitator dusts from five kraft mills was examined. The results suggest that deposits containing some chloride are brittle at temperatures up to 500 - 550% and become ductile or “plastic” at higher temperatures. For deposits that contain no chloride, the brittle-to-elastic transition occurs at a much higher temperature. Bend strengths measured at 400-550°C are 504/o to 80% of the values measured at room temperature. Particle size has a significant effect on the sintering rate and hence the deposit strength; however, the effect is negligible above 500°C. An empirical relationship has been determined to predict deposit strength based solely on porosity or density. The information obtained is of importance in sootblower optimization.

Author: Piroozmand, F., Tran, H., Kaliazine, A., Cormack, D. E.
Strength Recovery Boiler Fireside Deposits at High Temperatu
Strength Recovery Boiler Fireside Deposits at High Temperatures, 1998 Engineering Conference Proceedings
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