Nature of fireside deposits in a bagasse and groundnut shell fired 20 MW thermal boiler
✍ Scribed by S Srikanth; Swapan K Das; B Ravikumar; D.S Rao; K Nandakumar; P Vijayan
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 521 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0961-9534
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✦ Synopsis
The nature of deposit formation on the ÿreside surfaces of the boiler tubes in the various parts (water walls, platen superheater, ÿnal superheater, economizer, electrostatic precipitator etc.) of a commercial 20 MW stoker-ÿred boiler being ÿred with a mixture of 80% bagasse and 20% groundnut shell has been analyzed. The deposits in the various portions of the boiler were characterized by particle size analysis, chemical analysis, X-ray di raction and scanning electron microscopy. The deposits were found to be mainly quartz, alkali and alkaline earth silicates and sulfates. From the phase constitution and other microscopic characteristics of the deposit, it can be inferred that the silicates in the deposit formed through inertial impaction and the sulfates formed by vapor phase deposition.