Fireside Corrosion Of Boiler Tube Materials - Effects Of Co-Firing Biomass With Coal: Project Summary

Abstract:

<p>The objectives of this project were: <bl> <li>To determine the effect of co-firing biomass with coal on boiler tube fireside corrosion rates in existing subcritical coal fired power plants.</li> <li>To determine the likely fireside corrosion rates that could be expected on boiler tubing in future advanced (ultra) supercritical power plant.</li> </bl></p> <p>Typical and potential boiler tube alloys have been exposed to simulated furnace wall and superheater/reheater environments in the 1MW_Th Combustion Test Facility (CTF) at Power Technology.</p> <p>A total of four nominally 50 hour duration exposures have been completed. Specimens were exposed to a range of metal temperatures, heat fluxes and gaseous environments, representative of pulverised coal combustion under low NO_x conditions with biomass additions. Biomass was co-fired with Daw Mill coal on 20% and 10% thermal or heat input basis (approx 35% and 17% by mass). Specimens were exposed to the combustion environment on air-cooled, precision metrology, corrosion probes.</p> This summary provides information on: <bl> <li>Objectives</li> <li>Summary</li> <li>Background</li> <li>Corrosion Testing</li> <li>Wood Co-Firing</li> <li>Cereal Co-Product Co-Firing</li> <li>Conclusions</li> <li>Potential for Future Development</li> <li>Cost</li> <li>Duration</li> <li>Contractor</li> <li>Collaborators</li> </bl>

Author(s):

DTI