http://www.cnr.it/ontology/cnr/individuo/prodotto/ID235320
Oxidative degradation and ignition of loose-packed straw beds (Articolo in rivista)
- Type
- Label
- Oxidative degradation and ignition of loose-packed straw beds (Articolo in rivista) (literal)
- Anno
- 1999-01-01T00:00:00+01:00 (literal)
- Alternative label
C. Di Blasi, G. Portoricco, M. Borrelli, C. Branca (1999)
Oxidative degradation and ignition of loose-packed straw beds
in Fuel (Guildf.)
(literal)
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- C. Di Blasi, G. Portoricco, M. Borrelli, C. Branca (literal)
- Pagina inizio
- Pagina fine
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- Rivista
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- Dipartimento di Ingegneria Chimica, Universita degli Studi Napoli Federico II, Piazzale V. Tecchio, 80125 Naples, Italy (literal)
- Titolo
- Oxidative degradation and ignition of loose-packed straw beds (literal)
- Abstract
- Oxidative degradation and ignition of straw and rain-leached straw were investigated at a laboratory scale. Leaching reduced the ash
content (by about 50 wt.%), in particular chlorine and potassium, and caused some swelling. A loose-packed bed (density 50 kg/m3) was
exposed to a forced flow (velocities in the range 0.34-1.9 m/s) of hot air (temperatures in the range 540-890 K). Degradation rates became
significant for bed temperatures of about 500 K. However, the ignition temperatures were only slightly higher, hence oxidative degradation is
a slow process, resulting in maximum conversions of about 50 wt.% (slightly lower for leached straw). Ignition temperatures increased, as the
heating conditions were made more severe, and were lower for untreated straw, compared to leached straw. The ignition times were initially
shorter and then longer for untreated straw, as the solid heating rate was increased. These results are due to a lower reactivity of leached
straw, as a consequence of the partial ash removal, and its swelling, which modifies the heat transfer conditions across the bed. (literal)
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- Autore CNR
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