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Limitations of gas explosion venting due to accelerated flame propagation and elevated initial pressure

  • Many industrial processes include a gas explosion hazard. If safety measures are not adequate to prevent a potentially explosive atmosphere or to avoid effective ignition sources in enclosures, at least the effects of an explosion can be limited e.g. by gas explosion venting systems. For the design of gas explosion venting systems for confinements only little guidance is given when considering the constructional boundary conditions or process conditions. For this reason conservative assumptions are prevalent in practice and in many cases the protective systems become significantly oversized. From safety perspective such safety margins in venting areas can lead to a critical acceleration of the pressure rise. Moreover, a gas explosion venting at turbulent conditions caused by over sizing or by obstacles rather leads to an under-sized system. The present investigation was focused especially on the influence of certain obstacles as well as the influence of elevated initial pressures onMany industrial processes include a gas explosion hazard. If safety measures are not adequate to prevent a potentially explosive atmosphere or to avoid effective ignition sources in enclosures, at least the effects of an explosion can be limited e.g. by gas explosion venting systems. For the design of gas explosion venting systems for confinements only little guidance is given when considering the constructional boundary conditions or process conditions. For this reason conservative assumptions are prevalent in practice and in many cases the protective systems become significantly oversized. From safety perspective such safety margins in venting areas can lead to a critical acceleration of the pressure rise. Moreover, a gas explosion venting at turbulent conditions caused by over sizing or by obstacles rather leads to an under-sized system. The present investigation was focused especially on the influence of certain obstacles as well as the influence of elevated initial pressures on explosion venting behaviour of quiescent hydrogen, methane or ethylene in air.zeige mehrzeige weniger

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Metadaten
Autor*innen:Marco Poli, Rainer Grätz, Volkmar Schröder
Persönliche Herausgeber*innen:S. Pierucci, J.J. Klemes, E. De Rademaeker, B. Fabiano, S.S. Buratti
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Proceedings of the 14th EFCE symposium on loss prevention and safety promotion in the process industries
Jahr der Erstveröffentlichung:2013
Verlag:AIDIC, Associazione Italiana di Ingegneria Chimica
Verlagsort:Milano
Jahrgang/Band:31
Erste Seite:661
Letzte Seite:666
Freie Schlagwörter:Gas explosion venting; Obstacles; Turbulent combustion
Veranstaltung:14th International symposium on loss prevention and safety promotion in the process industries
Veranstaltungsort:Florence, Italy
Beginndatum der Veranstaltung:12.05.2013
Enddatum der Veranstaltung:15.05.2013
DOI:10.3303/CET1331111
ISSN:1974-9791
ISBN:978-88-95608-22-8
Bemerkung:
Serientitel: Chemical engineering transactions – Series title: Chemical engineering transactions
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:20.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:03.06.2013
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