High Solids Firing in an Operating Recovery Boiler - Comparison of CFD Predictions to Ractical Observations in the Furnace, 1998 International Chemical Recovery Conference Proceedings

Three-dimensional flow simulation was applied to analyze the high solids firing processes in a 3 150 tds/d recovery boiler. The flow field, combustion, heat transfer, and the concentration of nitric oxide (NO) were modeled with the commercial Fluent/UNS code using strong local refinement of the computational grid. For prediction of nitric oxide (NO) emissions a postprocessing technique was used. Different simplified ammonia oxidation mechanisms available were tested. The study shows that this kind of modeling can be successfully applied to a 3 150 tds/d recovery boiler. In addition, the possibilities to reduce the NOx emission by odorous gas firing (reburning) in the recovery boiler furnace are discussed based on one-dimensional calculations.

Author: Vakkilainen, E., Kjäldman, L., Taivassalo, V., Kilpinen, P., Norström, T.
High Solids Firing in an Operating Recovery Boiler - Compari
High Solids Firing in an Operating Recovery Boiler - Comparison of CFD Predictions to Ractical Observations in the Furnace, 1998 International Chemical Recovery Conference Proceedings
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