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Heterogeneous catalysis meets micro reactors: Partial oxidations in the explosion regime

  • Investigations on primary, secondary and tertiary explosion protection have been performed for micro reactors with slit-like channels which are coated with catalyst. Ethene/oxygen mixtures have been used as model gas mixtures representing explosion group IIB (DIN EN ISO 16852). It could be shown that the explosion regime can be significantly reduced when using micro reactors (primary explosion protection). Furthermore, safe Operation inside the explosion regime is possible with micro reactors (secondary explosion protection), but, at certain conditions thermal runaway and ignition of detonations are possible. An unexpected behaviour has been found, because thermal runaway occurred when Volumetrie flow rate was increased. This behaviour is completely opposite to that of multi tube fixed bed reactors which show an increase of safety when increasing volumetric flow rate. Micro reactors can be constructed pressure-resistant even when detonations occur inside (tertiary explosionInvestigations on primary, secondary and tertiary explosion protection have been performed for micro reactors with slit-like channels which are coated with catalyst. Ethene/oxygen mixtures have been used as model gas mixtures representing explosion group IIB (DIN EN ISO 16852). It could be shown that the explosion regime can be significantly reduced when using micro reactors (primary explosion protection). Furthermore, safe Operation inside the explosion regime is possible with micro reactors (secondary explosion protection), but, at certain conditions thermal runaway and ignition of detonations are possible. An unexpected behaviour has been found, because thermal runaway occurred when Volumetrie flow rate was increased. This behaviour is completely opposite to that of multi tube fixed bed reactors which show an increase of safety when increasing volumetric flow rate. Micro reactors can be constructed pressure-resistant even when detonations occur inside (tertiary explosion protection). For the example of o-xylene oxidation it could be shown that space time yield can be increased significantly when entering explosion regime.zeige mehrzeige weniger

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Metadaten
Autor*innen:T. Lange, F. Neher, E. Klemm, Sebastian Heinrich, Emilio Balcazar Pust, Christian Liebner, Hartmut Hieronymus
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):DGMK International conference - Selective oxidation and functionalization: Classical and alternative routes and sources
Jahr der Erstveröffentlichung:2014
Herausgeber (Institution):Deutsche Wissenschaftliche Gesellschaft für Erdöl, Erdgas und Kohle (DGMK)
Jahrgang/Band:2014-3
Erste Seite:97
Letzte Seite:105
Veranstaltung:DGMK International conference - Selective oxidation and functionalization: Classical and alternative routes and sources
Veranstaltungsort:Berlin, Germany
Beginndatum der Veranstaltung:13.10.2014
Enddatum der Veranstaltung:15.10.2014
ISBN:978-3-941721-44-9
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Nein
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