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Pyrolysis of a wood-derived material. Effects of moisture and ash content

Gray, Murray R. and Corcoran, William H. and Gavalas, George R. (1985) Pyrolysis of a wood-derived material. Effects of moisture and ash content. Industrial & Engineering Chemistry Process Design and Development, 24 (3). pp. 646-651. ISSN 0196-4305. http://resolver.caltech.edu/CaltechAUTHORS:20151008-112330650

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/i200030a020DOIArticle
http://pubs.acs.org/doi/abs/10.1021/i200030a020PublisherArticle
ORCID:
AuthorORCID
Gavalas, George R.0000-0003-1468-6835
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.
Funders:
Funding AgencyGrant Number
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Bechtel CorporationUNSPECIFIED
Record Number:CaltechAUTHORS:20151008-112330650
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20151008-112330650
Official Citation:Pyrolysis of a wood-derived material. Effects of moisture and ash content Murray R. Gray, William H. Corcoran, and George R. Gavalas Industrial & Engineering Chemistry Process Design and Development 1985 24 (3), 646-651 DOI: 10.1021/i200030a020
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60899
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:12 Oct 2015 19:40
Last Modified:26 Sep 2017 20:34

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