Pyrolysis of a wood-derived material. Effects of moisture and ash content
Abstract
The influence of moisture on the thermal degradation of wood waste was investigated by pyrolyzing ground samples in a batch fluid-bed reactor at between 320 and 470 °C in helium at 101-104 kPa. The wood samples were heated at about 300 °C/min, so that drying and pyrolysis were simultaneous. The presence of moisture increased the yield of char by as much as 5 yield % , relative to dry samples. Moisture suppressed tar formation from demineralized samples at 470 °C but enhanced the formation of tar above and below 390 °C from samples containing ash. Ash and added calcium catalyzed the conversion of tar into aqueous product, while moisture interacted with tar formation or trapping reactions to increase the yield of char. Moisture also modulated the activity of the ash components for the Conversion of tar Into aqueous product. The native mineral components in the wood waste gave effects equivalent to ion-exchanged calcium.
Additional Information
© 1985 American Chemical Society. Received for review November 14, 1983. Revised manuscript received August 15, 1984. Accepted August 29, 1984. The authors acknowledge the financial support of the Natural Science and Engineering Research Council of Canada, who provided a Postgraduate Scholarship for M. R. Gray. The research was also supported by a grant from Bechtel Corporation.Additional details
- Eprint ID
- 60899
- DOI
- 10.1021/i200030a020
- Resolver ID
- CaltechAUTHORS:20151008-112330650
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Bechtel Corporation
- Created
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2015-10-12Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field