Please use this identifier to cite or link to this item: http://dx.doi.org/10.14279/depositonce-9735
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Main Title: Investigation of the Degradation of Chelate Complexes in Liquid Redox Desulfurization Processes
Author(s): Holz, Stephan
Köster, Peter
Thielert, Holger
Guetta, Zion
Repke, Jens-Uwe
Type: Article
Language Code: en
Abstract: Metal complexes such as Fe‐EDTA, which are used as pseudo‐catalysts or oxygen carriers in wet oxidative desulfurization processes, are subject to a degradation mechanism that significantly influences the economics of such processes. Therefore, this study presents a methodology for determining the degree of degradation during the reactive hydrogen sulfide absorption in a Fe‐EDTA solution within a continuously operating semi‐batch reactor system. For this purpose, the reactive conversion of H2S in the liquid phase was used as a reference, and a clear dependence of the degradation on the pH could be shown. In addition, indicators are introduced that evaluate the observed pH dependency of the degradation and distinguish pH‐induced effects such as the pH‐dependent absorption performance of H2S.
URI: https://depositonce.tu-berlin.de/handle/11303/10840
http://dx.doi.org/10.14279/depositonce-9735
Issue Date: 22-Jan-2020
Date Available: 26-Feb-2020
DDC Class: 660 Chemische Verfahrenstechnik
Subject(s): chelate degradation
ethylenedinitrilotetraacetic acid
EDTA
H2S oxidation
H2S removal
liquid Redox
Sponsor/Funder: TU Berlin, Open-Access-Mittel - 2020
License: https://creativecommons.org/licenses/by/4.0/
Journal Title: Chemical Engineering & Technology
Publisher: Wiley-VCH
Publisher Place: Weinheim
Volume: 43
Issue: 3
Publisher DOI: 10.1002/ceat.201900420
Page Start: 476
Page End: 483
EISSN: 1521-4125
ISSN: 0930-7516
Appears in Collections:FG Dynamik und Betrieb technischer Anlagen » Publications

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