The chemistry of premixed hydrocarbon/air combustion in a fluidized bed

✍ Scribed by D.R. van der Vaart

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 240 KB
• Volume: 71
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(88)90103-4

✦ Synopsis

Propane premixed with air in stoichiometric proportions was burned at various bed temperatures in a bench-scale (76 mm i.d.) fluidized bed. An in-bed probe was used to measure the steady-state concentration profiles of the stable chemical species. In-bed burning (bed temperature = 850°C) of the mixture was shown to be a gradual process rather than the sudden, explosive conversion measured during overbed ignition (bed temperature = 750"C). Ironically, the rapid overbed conversion which resulted in the latter case may improve the overall amount of heat captured by the bed due to the more efficient freeboard-to-bed heat transfer nearer the bed surface.