A model has been developed to simulate deposit growth under slagging conditions. The model was coupled with a comprehensive combustion code to predict the ยฏow ยฎeld, the temperature ยฎeld and the deposit growth behavior. The predictions indicate that the numerical model can be used to optimize the des
Sodium/ash reactions in the formation of fireside deposits in pulverized-fuel-fired boilers
โ Scribed by J. Boow
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 517 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0016-2361
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โฆ Synopsis
It is suggested that sodium/ash reactions within burning pulverized-fuel (p.f.) particles may result in a considerable reduction in the release of sodium to the furnace atmosphere and that the fine supercooled molten ash particles, enriched with alkali, may contribute to the initiation of diffusion-type primary deposits. Observations on small rapidly heated carbon-clay compacts, and measurements of the viscosity of supercooled alkali-enriched coal-ash slags, are presented to support this view.
๐ SIMILAR VOLUMES
09 Combustion (burners, combustion systems) experimental study was then carried out to verify the model. The 300 MW once-through boiler system is used as an example. The capacity for heat recovery in the de-aerator tank was shown, by both the theoretical and the experimental analyses, to be largely