The application of modified research method described in PN - EN 50281-2-1:2002 to determine minimal inerting oxygen concentration in the mixture with nitrogen

• Autorzy: Jaskółowski W. , Kręciwik D. , Półka M.
• Języki publikacji: EN

Abstrakty

EN

The application of modified research method described in the standard PN - EN 50281-2-1:2002 to determine minimal inerting oxygen concentration in the mixture with nitrogen. The article described the results of conducted research into minimal ignition temperature of cloud dust (MTCD) for chosen dust, i.e. dust of oak, jatoba, eucalyptus and azobe (lophira alata, also called “red ironwood”) using a different oxygen concentrations (5 %, 10 %, 15 %, 21% , 50 %) in the mixture with nitrogen, which was used to force dust in recovery chamber. The research was carried out in accordance with modified research method described in the standard PN-EN 50281-2-1:2002. The article also presented that the suitability of this method to solve the research problem is not significant, referred to in the title of the article. The start of ignition in oxygen concentration 5% and 10%, respectively, states that with certainty there was higher concentration in the moment of ignition as with such values of the oxygen concentration ignition is impossible. At standard conditions, i.e. with the oxygen concentration of 21%, the lowest ignition temperature of cloud dust was obtained for azobe dust, while the highest for eucalyptus.

Słowa kluczowe

EN

wood dust; inerting; cloud of dust; ignition

• Wydawca: Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
• Czasopismo: Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
• Rocznik: 2012
• Tom: No. 78
• Strony: 111--117
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Jaskółowski W.

• Faculty of Fire Safety Engineering, The Main School of Fire Service (SGSP)

autor

Kręciwik D.

• The Central School of the State Fire Service (CSP PSP)

autor

Półka M.

• Faculty of Fire Safety Engineering, The Main School of Fire Service (SGSP)

Bibliografia

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• 3.DASTIDAR A., AMYOTTE P., 2002: Determination of minimum inerting concentrations for combustible dusts in a laboratory-scale chamber, Trans IChemE, Vol. 80, Part B
• 4.ECKHOFF R.K., 2004: Partial inerting—an additional degree of freedom in dust explosion protection, Journal of Loss Prevention in the Process Industries, 17; 187-193
• 5.JASKÓŁOWSKI W., GRZEŚKIEWICZ M., OCHLAK M., 2011: Study of minimum ignition temperature in layer and cloud of dusts obtained from origin and thermally modified oak (Quercus robur L.) and ash (Faraxinus excelsior L.) of wooden, Annals of Warsaw University of Life Science – SGGW, Forestry and Wood Technology, 73; 125-129
• 6.HIGGS S., 2009: Into thin air, Fire Risk Management, 3; 49-52
• 7.Pofit – Szczepańska M., 1994, Wybrane zagadnienia z chemii ogólnej, fizykochemii spalania i rozwoju pożarów, SA PSP, Kraków
• 8.ZEEUWEN P., 2000, Explosion hazards in powder handling and processing: The changes ahead, Chilworth Technology, Manchester
• 9.PN EN 50281-2-1:2002: Electrical apparatus for use in the presence of combustible dust - Part 2-1: Test methods - Methods for determining the minimum ignition temperatures of dust