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Title: Investigation of nitrogenous compound formation in biomass gasification

Abstract

Gasification of high nitrogen content biomass can produce large quantities of nitrogenous compounds that pose potential risks to the environment and human health, and can compromise the performance of related energy conversion processes. Few studies of nitrogenous compound formation in gasification have been reported and little is known about the evolution of fuel-bound nitrogen from biomass fuels. To address these deficiencies, Leucaena, a nitrogen-fixing tree and possible energy crop with 2-3% nitrogen content, was gasified in a bench-scale, indirectly-heated, fluidized bed gasifier to determine the effects of operating conditions on nitrogeneous compound formation. Gas chromatography, and ion-selective electrode and chemiluminescence analyzers were used to measure concentrations of major gas species (e.g., CO, CO{sub 2}, H{sub 2}, CH{sub 4}, and N{sub 2}), NH{sub 3}, HCN, NO{sub x}, and nitrogeneous tar species as functions of gasifier temperature (700{degrees}C to 900{degrees}C), equivalence ration (0.2 to 0.4), and residence time (2.3 to 6.7 s). Nitrogeneous compounds were inventoried, and fundamental conclusions, based on the findings of these tests, are proposed.

Authors:
; ;  [1]
  1. Univ. of Hawaii, Honolulu, HI (United States); and others
Publication Date:
OSTI Identifier:
135717
Report Number(s):
CONF-9410176-
TRN: 95:006074-0091
Resource Type:
Conference
Resource Relation:
Conference: 6. national bioenergy conference, Reno, NV (United States), 2-6 Oct 1994; Other Information: PBD: 1994; Related Information: Is Part Of Bioenergy `94 using biofuels for a better environment. Technical papers, Volume 1 and Volume 2; Farrell, J.; Sargent, S.; Dwanson, D. [eds.] [and others]; PB: 753 p.
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 54 ENVIRONMENTAL SCIENCES; BIOMASS; GASIFICATION; NITROGEN COMPLEXES; SYNTHESIS; BENCH-SCALE EXPERIMENTS; AMMONIA; HYDROCYANIC ACID; NITROGEN OXIDES

Citation Formats

Ishimura, D M, Masutani, S M, and Kinoshita, C M. Investigation of nitrogenous compound formation in biomass gasification. United States: N. p., 1994. Web.
Ishimura, D M, Masutani, S M, & Kinoshita, C M. Investigation of nitrogenous compound formation in biomass gasification. United States.
Ishimura, D M, Masutani, S M, and Kinoshita, C M. 1994. "Investigation of nitrogenous compound formation in biomass gasification". United States.
@article{osti_135717,
title = {Investigation of nitrogenous compound formation in biomass gasification},
author = {Ishimura, D M and Masutani, S M and Kinoshita, C M},
abstractNote = {Gasification of high nitrogen content biomass can produce large quantities of nitrogenous compounds that pose potential risks to the environment and human health, and can compromise the performance of related energy conversion processes. Few studies of nitrogenous compound formation in gasification have been reported and little is known about the evolution of fuel-bound nitrogen from biomass fuels. To address these deficiencies, Leucaena, a nitrogen-fixing tree and possible energy crop with 2-3% nitrogen content, was gasified in a bench-scale, indirectly-heated, fluidized bed gasifier to determine the effects of operating conditions on nitrogeneous compound formation. Gas chromatography, and ion-selective electrode and chemiluminescence analyzers were used to measure concentrations of major gas species (e.g., CO, CO{sub 2}, H{sub 2}, CH{sub 4}, and N{sub 2}), NH{sub 3}, HCN, NO{sub x}, and nitrogeneous tar species as functions of gasifier temperature (700{degrees}C to 900{degrees}C), equivalence ration (0.2 to 0.4), and residence time (2.3 to 6.7 s). Nitrogeneous compounds were inventoried, and fundamental conclusions, based on the findings of these tests, are proposed.},
doi = {},
url = {https://www.osti.gov/biblio/135717}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Dec 31 00:00:00 EST 1994},
month = {Sat Dec 31 00:00:00 EST 1994}
}

Conference:
Other availability
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