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Ignition probability of fuel gas-air mixtures due to mechanical impacts between stainless steel components

  • The ignition probability of gaseous mixtures of acetylene, hydrogen and ethylene with air due to mechanical impacts between stainless steel components was examined for various impact energies. Additionally, the sources of ignitions were identified by infrared high-speed recordings. The stainless steel types used had different chemical compositions in order to investigate the influence of the chromium content on the ignition probability. The investigations reveal different ignition probabilities of the gas mixtures as well as different sources of ignitions depending on the steel type used and the impact energy applied. Impact energies below 126 J resulted in ignition of the gaseous mixture at the hot surfaces of the pin or the plate in most of the cases. At higher energies, initiation of ignition due to abraded particles was more probable when using stainless steel components with lower chromium content whereas the source of ignition was almost exclusively limited to the hot surfaces ofThe ignition probability of gaseous mixtures of acetylene, hydrogen and ethylene with air due to mechanical impacts between stainless steel components was examined for various impact energies. Additionally, the sources of ignitions were identified by infrared high-speed recordings. The stainless steel types used had different chemical compositions in order to investigate the influence of the chromium content on the ignition probability. The investigations reveal different ignition probabilities of the gas mixtures as well as different sources of ignitions depending on the steel type used and the impact energy applied. Impact energies below 126 J resulted in ignition of the gaseous mixture at the hot surfaces of the pin or the plate in most of the cases. At higher energies, initiation of ignition due to abraded particles was more probable when using stainless steel components with lower chromium content whereas the source of ignition was almost exclusively limited to the hot surfaces of pin and plate for the steel with the highest chromium content. However, as opposed to the source of ignition, the probability of ignition could not be correlated to the chromium content of the stainless steel.zeige mehrzeige weniger

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Metadaten
Autor*innen:Lars Holländer, Thomas Grunewald, Rainer Grätz
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Journal of loss prevention in the process industries
Jahr der Erstveröffentlichung:2014
Verlag:Butterworth
Verlagsort:Guildford, Surrey
Jahrgang/Band:32
Erste Seite:393
Letzte Seite:398
Freie Schlagwörter:Explosive atmosphere; Ignition probability; Mechanical impact; Stainless steel
DOI:10.1016/j.jlp.2014.10.009
ISSN:0950-4230
ISSN:1873-3352
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:06.11.2014
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