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  Gaseous SO3 and H2SO4 in the exhaust of an aircraft gas turbine engine: measurements by CIMS and implications for fuel sulfur conversion to sulfur (VI) and conversion of SO3 to H2SO4

Sorokin, A., Katragkou, E., Arnold, F., Busen, R., & Schumann, U. (2004). Gaseous SO3 and H2SO4 in the exhaust of an aircraft gas turbine engine: measurements by CIMS and implications for fuel sulfur conversion to sulfur (VI) and conversion of SO3 to H2SO4. Atmospheric Environment, 38(3), 449-456. doi:10.1016/j.atmosenv.2003.09.069.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0011-8CAD-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0011-8CAE-5
Genre: Journal Article

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 Creators:
Sorokin, Andrey1, Author              
Katragkou, Eleni1, Author              
Arnold, Frank1, Author              
Busen, R.2, Author
Schumann, U.2, Author
Affiliations:
1Frank Arnold - Atmospheric Trace Gases and Ions, Research Groups, MPI for Nuclear Physics, Max Planck Society, ou_907557              
2Central Institute of Aviation Motors, Aviamotornaya 2, 111116, Moscow, Russia, DLR Oberpfaffenhofen, Institut für Physik der Atmosphäre, Wessling, Germany, ou_persistent22              

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Free keywords: Chemiions; Combustion; Ion clusters; Fuel sulfur conversion
 Abstract: An estimation of the conversion efficiency (ε) of fuel sulfur to SO3 and H2SO4, where ε = ([SO3] + [H2SO4])/[ST] and [ST] is the total sulfur atom concentration in the exhaust at the exit of an aircraft gas-turbine combustor, was derived from measurements by comparison with model results. The major results of the presented CIMS experiments and their interpretation with a model simulation are: (i) The efficiency is ε = 2.3 ± 1 % at an exhaust age of about 5 ms from the combustor exit; (ii) The SO3 molecules represent a major fraction of sulfur (VI) gases εA < 50 % and an essential SO3-conversion to H2SO4 takes place in the sampling line where the exhaust gases spend a sufficiently long time and where the temperature is lower than in the hot exhaust. The coincidence of ε from our work (measurements with the sampling point in the exhaust just behind the combustor exit) and ε the measurements in an exhaust at a plume age of about 1 s suggests that the sulfur (VI) formation is inefficient in the post-combustor flow inside the aircraft engine.

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Language(s): eng - English
 Dates: 2004-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 59921
DOI: 10.1016/j.atmosenv.2003.09.069
 Degree: -

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Title: Atmospheric Environment
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 38 (3) Sequence Number: - Start / End Page: 449 - 456 Identifier: -