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Aircraft exhaust sulfur emissions

Abstract

The extent to which fuel sulfur is converted to SO{sub 3} during combustion and the subsequent turbine flow in supersonic and subsonic aircraft engines is estimated numerically. The analysis is based on: a flamelet model with non-equilibrium sulfur chemistry for the combustor, and a one-dimensional, two-stream model with finite rate chemical kinetics for the turbine. The results indicate that between 2% and 10% of the fuel sulfur is emitted as SO{sub 3}. It is also shown that, for a high fuel sulfur mass loading, conversion in the turbine is limited by the level of atomic oxygen at the combustor exit, leading to higher SO{sub 2} oxidation efficiency at lower fuel sulfur loadings. While SO{sub 2} and SO{sub 3} are the primary oxidation products, the model results further indicate H{sub 2}SO{sub 4} levels on the order of 0.1 ppm for supersonic expansions through a divergent nozzle. This source of fully oxidized S(6) (SO{sub 3} + H{sub 2}SO{sub 4}) exceeds previously calculated S(6) levels due to oxidation of SO{sub 2} by OH in the exhaust plume outside the engine nozzle. (author) 26 refs.
Authors:
Brown, R C; Anderson, M R; Miake-Lye, R C; Kolb, C E; [1]  Sorokin, A A; Buriko, Y I [2] 
  1. Aerodyne Research, Inc., Billerica, MA (United States). Center for Chemical and Environmental Physics
  2. Scientific Research Center `Ecolen`, Moscow (Russian Federation)
Publication Date:
Dec 31, 1997
Product Type:
Conference
Report Number:
ONERA-97-Vol.1; CONF-9610234-
Reference Number:
SCA: 540120; 330103; PA: FRC-98:000116; EDB-98:075978; SN: 98001913082
Resource Relation:
Journal Volume: 23; Journal Issue: 24; Conference: International colloquium: Impact of aircraft emissions upon the atmosphere, Paris (France), 15-18 Oct 1996; Other Information: PBD: 1997; Related Information: Is Part Of Proceedings of impact of aircraft emissions upon the atmosphere. V. 1; PB: [381] p.
Subject:
54 ENVIRONMENTAL SCIENCES; 33 ADVANCED PROPULSION SYSTEMS; AIRCRAFT; SUPERSONIC TRANSPORT; EXHAUST GASES; JET ENGINE FUELS; SULFUR; SULFUR TRIOXIDE; SULFUR DIOXIDE; SULFURIC ACID; OXIDATION; PLUMES; RAMJET ENGINES
OSTI ID:
623592
Research Organizations:
Office National d`Etudes et de Recherches Aerospatiales (ONERA), 92 - Chatillon (France)
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0094-8276; Other: ON: DE98731902; TRN: FR9800116
Availability:
OSTI as DE98731902
Submitting Site:
FR
Size:
pp. 131-148
Announcement Date:

Citation Formats

Brown, R C, Anderson, M R, Miake-Lye, R C, Kolb, C E, Sorokin, A A, and Buriko, Y I. Aircraft exhaust sulfur emissions. France: N. p., 1997. Web. doi:10.1029/96GL03339.
Brown, R C, Anderson, M R, Miake-Lye, R C, Kolb, C E, Sorokin, A A, & Buriko, Y I. Aircraft exhaust sulfur emissions. France. doi:10.1029/96GL03339.
Brown, R C, Anderson, M R, Miake-Lye, R C, Kolb, C E, Sorokin, A A, and Buriko, Y I. 1997. "Aircraft exhaust sulfur emissions." France. doi:10.1029/96GL03339. https://www.osti.gov/servlets/purl/10.1029/96GL03339.
@misc{etde_623592,
title = {Aircraft exhaust sulfur emissions}
author = {Brown, R C, Anderson, M R, Miake-Lye, R C, Kolb, C E, Sorokin, A A, and Buriko, Y I}
abstractNote = {The extent to which fuel sulfur is converted to SO{sub 3} during combustion and the subsequent turbine flow in supersonic and subsonic aircraft engines is estimated numerically. The analysis is based on: a flamelet model with non-equilibrium sulfur chemistry for the combustor, and a one-dimensional, two-stream model with finite rate chemical kinetics for the turbine. The results indicate that between 2% and 10% of the fuel sulfur is emitted as SO{sub 3}. It is also shown that, for a high fuel sulfur mass loading, conversion in the turbine is limited by the level of atomic oxygen at the combustor exit, leading to higher SO{sub 2} oxidation efficiency at lower fuel sulfur loadings. While SO{sub 2} and SO{sub 3} are the primary oxidation products, the model results further indicate H{sub 2}SO{sub 4} levels on the order of 0.1 ppm for supersonic expansions through a divergent nozzle. This source of fully oxidized S(6) (SO{sub 3} + H{sub 2}SO{sub 4}) exceeds previously calculated S(6) levels due to oxidation of SO{sub 2} by OH in the exhaust plume outside the engine nozzle. (author) 26 refs.}
doi = {10.1029/96GL03339}
issue = {24}
volume = {23}
place = {France}
year = {1997}
month = {Dec}
}