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Title: A study of composition and pyrolysis behavior of biomass-based materials for NOx reduction

Abstract

Pyrolysis products of biomass (bio-oils) have been shown to cause NO reduction when used as reburn fuel. A better understanding of composition of biomass will help in selection of feedstock that helps to enhance NO reduction potential of biomass-based materials. In the present work thermogravimetric analysis (TGA) and {sup 13}C-CP/MAS-NMR techniques were used to study the composition of different biomass-based materials. Samples are then flash pyrolyzed in a flow reactor to correlate the composition with the yield of volatiles, which are believed to cause reduction of NO through homogeneous gas phase reactions. The TGA weight loss curves of oils in inert atmosphere showed two distinct peaks between 160--400 C and 400--600 C, corresponding to the decomposition of cellulose, hemicellulose and lignin structures. The third distinct peak between 600--900 C corresponds to secondary thermal decomposition of char. The NMR spectra of the samples indicated that aryl-alkyl ether linkages of the lignin structure were extensively cleaved and carbonyl-containing species were increased. Study also showed that lower content of lignin, and higher amounts of cellulose and hemicellulose produced more volatile compounds upon pyrolysis.

Authors:
;
Publication Date:
Research Org.:
The Pennsylvania State Univ., University Park, PA (US)
OSTI Identifier:
20082281
DOE Contract Number:  
FC22-92PC92162
Resource Type:
Conference
Resource Relation:
Conference: Sixteenth Annual International Pittsburgh Coal Conference, Pittsburgh, PA (US), 10/11/1999--10/15/1999; Other Information: 1 CD-ROM. Operating systems required: Windows 95/98; Windows 3.X, Macintosh; PBD: 1999; Related Information: In: Sixteenth annual international Pittsburgh Coal Conference: Proceedings, [2000] pages.
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 54 ENVIRONMENTAL SCIENCES; CELLULOSE; HEMICELLULOSE; LIGNIN; PYROLYSIS PRODUCTS; NITRIC OXIDE; REDUCTION; STAGED COMBUSTION; AIR POLLUTION ABATEMENT; VOLATILE MATTER

Citation Formats

Bhalla, S, and Pisupati, S V. A study of composition and pyrolysis behavior of biomass-based materials for NOx reduction. United States: N. p., 1999. Web.
Bhalla, S, & Pisupati, S V. A study of composition and pyrolysis behavior of biomass-based materials for NOx reduction. United States.
Bhalla, S, and Pisupati, S V. 1999. "A study of composition and pyrolysis behavior of biomass-based materials for NOx reduction". United States.
@article{osti_20082281,
title = {A study of composition and pyrolysis behavior of biomass-based materials for NOx reduction},
author = {Bhalla, S and Pisupati, S V},
abstractNote = {Pyrolysis products of biomass (bio-oils) have been shown to cause NO reduction when used as reburn fuel. A better understanding of composition of biomass will help in selection of feedstock that helps to enhance NO reduction potential of biomass-based materials. In the present work thermogravimetric analysis (TGA) and {sup 13}C-CP/MAS-NMR techniques were used to study the composition of different biomass-based materials. Samples are then flash pyrolyzed in a flow reactor to correlate the composition with the yield of volatiles, which are believed to cause reduction of NO through homogeneous gas phase reactions. The TGA weight loss curves of oils in inert atmosphere showed two distinct peaks between 160--400 C and 400--600 C, corresponding to the decomposition of cellulose, hemicellulose and lignin structures. The third distinct peak between 600--900 C corresponds to secondary thermal decomposition of char. The NMR spectra of the samples indicated that aryl-alkyl ether linkages of the lignin structure were extensively cleaved and carbonyl-containing species were increased. Study also showed that lower content of lignin, and higher amounts of cellulose and hemicellulose produced more volatile compounds upon pyrolysis.},
doi = {},
url = {https://www.osti.gov/biblio/20082281}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jul 01 00:00:00 EDT 1999},
month = {Thu Jul 01 00:00:00 EDT 1999}
}

Conference:
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