Ash Particle Hardness and Effect on Material
08-05-2009, 03:31 PM
|Ash Particle Hardness and Effect on Material
RE: Hot corrosion/erosion of metal
How does one go about testing the effect of an ash particle against a steel surface? Particle at high velocity etc. We are piloting a furnace with high phosphorous content biomass fuel and one with High-P biomass+lime. Lime addition affects SO2-SO3 content in flue gas to prevent downstream corrsoion in cold end of unit. Other benefits might include softening of ash particle.
What scientific methods exist for testing particle effect at high velocity against a steel surface? Would like to test ash particle and lime ash particle for differences. ASTM methods would be nice, ash particles are varied in size from 2-500 microns, smaller particles edges are jagged compared to larger particles. we have tried ASTM G65 with limited success. Nozzle clogging was an issue.
08-08-2009, 07:47 PM
|RE: Ash Particle Hardness and Effect on Material
Quote:ASTM G 76 - 1983 - Standard Practice for Conducting Erosion Tests by Solid Particle Impringment using Gas Jets.Copied from my post in your previous thread "Hot corrosion/erosion of metal"
Feeding material into blast jet in a controllable and consistent manner may well be the most challenging part.
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