✦ LIBER ✦

The influence of pyrolysis conditions on the subsequent gasification of lignocellulosic chars

✍ Scribed by D.M. Mackay; P.V. Roberts

Publisher: Elsevier Science
Year: 1982
Tongue: English
Weight: 746 KB
Volume: 20
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(82)90414-6

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✦ Synopsis

Prune pit chars prepared by pyrolysis at heating rates of 1 and WClmin to 500, 700 and 900°C were subsequently gasified by exposure to CO2 at 900°C for various lengths of time. Gasification rate was found to be dependent on the conditions during pyrolysis: slow heating below 5OOT and prolonged exposure to high temperatures (-900°C) during pyrolysis in an inert atmosphere lead to lower rate gasification. Despite differences in gasification rate, the pore structure developed for a given mass loss due to the gasification reactions was apparently independent of the char preparation conditions. Pore volume in the gasified char (expressed on an absolute basis) passed through a maximum at 40-W% bumoff, apparently due to mass loss from the exterior of the particles.

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