Investigation of the influence of the layer thickness of a granulated foam glass on the liquids combustion of the series of alkans

Authors

  • Il'gar F. Dadashov Academy of the Ministry for Emergency Situations of the Azerbaijan Republic; pos. Govsany, ul. El'mana Gasymova, Baku, AZ1089, Azerbaijan

DOI:

https://doi.org/10.33408/2519-237X.2018.2-3.320

Keywords:

mass burning rate, alkanes, pentane, heptane, octane, decane, dodecane, fires in tanks, granulated foam glass, gel, re-ignition

Abstract

Purpose. The change in the intensity of burning of liquid alkanes is studied upon accumulation of granulated non-combustible material on their surface, which has a density less than that of liquid. The purpose of the study is to determine the value of the thickness of the foam glass layer, which guarantees gel quenching with the impossibility of re-ignition.

Methods. Combustion of liquid alkanes with the presence and absence of a floating incombustible layer under conditions of a laboratory model focal point, which is made in the form of a reservoir with an evaporation surface of 98.5 cm2, is studied. The mass burnup rate of hydrocarbons is determined by the results of the mass change during the burnout process.

Findings. It is established that the mass burning rate of alkanes decreases with increasing thickness of the foam glass layer. The effect of the cessation of combustion of high-boiling alkanes (decane, dodecane) was noted when the thickness of the foamed glass layer reached 8 and 6 cm; for octane, a layer of foam glass of 10 cm is required. Low-boiling alkanes (pentane, heptane) do not extinguish at a thickness of the foamed glass layer of 12 cm. The application of foamed glass under the specified conditions accelerates quenching and guarantees the impossibility of re-ignition.

Application field of research. This study forms a new direction in the firefighting of flammable liquids and shows the possibility of effective quenching of liquid hydrocarbons without the use of foams. As a result, the environmental performance of the extinguishing process is improved.

Conclusions. The application of a foam glass layer of 4–6 cm allows achieving the cessation of combustion of high-boiling liquids. For pentane and heptane, a layer of foam glass 12 cm allows to reduce the intensity of combustion to a level at which combustion can be eliminated by impulsive feeding of the gelling system with the impossibility of re-ignition.

Author Biography

Il'gar F. Dadashov, Academy of the Ministry for Emergency Situations of the Azerbaijan Republic; pos. Govsany, ul. El'mana Gasymova, Baku, AZ1089, Azerbaijan

Head of Chair; PhD in Technical Sciences

References

Campbell R. Fires at Outside Storage Tanks. Report National fire protection association: August 2014, available at: https://www.nfpa.org/News-and-Research/Fire-statistics-and-reports (accessed: June 28, 2018).

Hylton J.G. U.S. Fire Department Profile. Report National fire protection association: April 2017. 39 p, available at: https://www.nfpa.org/-/media/Files/News-and-Research/Fire-statistics/Fire-service/osfdprofile.pdf (accessed: June 28, 2018).

Borovikov V. Gasinnja pozhezh u rezervuarah dlja zberigannja nafty i naftoproduktiv [Extinguishing fires in tanks with oil and oil products]. Pozhezhna ta tehnogenna bezpeka. 2015. No. 11 (26). Pp. 28–29. (ua)

General Foam Information. U.S. Сhemguard association. August 2017. 6 p, available at: http://www.chemguard.com/about-us/documents-library/foam-info/general.htm (accessed: June 28, 2018).

Fire Fighting Foam Principles and Ethanol-Blended Fuel. 2016. 20 p., available at: http://www.ncdoi.com/OSFM/RPD/PT/Documents/Coursework/Ethanol/Module5_ParticipantManuals.pdf (accessed: June 28, 2018).

Statut dij u nadzvychajnyh sytuacijah organiv upravlinnja ta pidrozdiliv Operatyvno-rjatuval'noi' sluzhby [Statute of actions in emergencies of the authorities and units of the Rescue Service]. Kyi'v: MNS Ukrai'ny. 2012. 42 p. (ua)

Volkov R.S., Voytkov I.S., Vysokomornaya O.I. Osobennosti tusheniya zhidkikh topliv i organicheskikh zhidkostey raspylennoy vodoy [Features of fire extinguishing of liquid fuels and organic liquids by sprayed water]. Pozharovzryvobezopasnost'. 2016. Vol. 25, No. 4. Pp. 68 –75. (rus)

Bocharov V.V. Ispol'zovanie perftorirovannykh PAV v penoobrazovatelyakh – «vtoroe prishestvie». Galogenorganika s naikhudshim stsenariem razvitiya dlya obitateley zemli [The use of perfluorinated surfactants in blowing agents is the second coming. Halogenorganika with the worst development scenario for the inhabitants of the earth]. Pozharovzryvobezopasnost'. 2013. Vol. 22, No. 10. Pp. 75–82. (rus)

Seam J. Fire fighting foams with perfluorechemicals - Environmental revive. 2013. 75 р, available at: http://www.hemmingfire.com/news/get_file.php3/id/287/file/Seow_WA-DEC_PFCs_Firefighting_Foam_final_version_7June2013.pdf (accessed: June 28, 2018).

Amankeldi F., Ospanova Z., Musabekov K. Composite Foaming Agents on the Basis of High-Molecular Natural Surfactants. Colloids Interfaces. 2018. Vol. 2, No. 4. Pp. 2–8.

Patino J.M., Sanchez С.С., Niсo M.R. Implications of interfacial characteristics of food foaming agents in foam formulations. Adv. Colloid Interface Sci. 2008. Vol. 140, No. 2. Pp. 95–113.

Borisov P.F., Rosokha V.E., Abramov Yu.A., Kireev A.A., Babenko A.V. Sposob tusheniya pozhara i sostav dlya ego osushchestvleniya [Fire extinguishing method and composition for its implementation]: patent RU No. 2264242, IPC A 62 C 5/033. Owner: Academy of Fire Safety of Ukraine. Publ. November 20, 2005. (rus)

Popov M., Zakrevskaya M.L., Vaganov V. Performance of Lightweight Concrete based on Granulated Foamglass. Sci. Eng. 2017. Vol. 96, No. 1. Pp. 1–7.

Limbachiya M., Meddah M.S., Fotiadou M.S. Performance of granulated foam glass concrete. Construction and Building Materials. 2011. Vol. 28, No. 1. Pp. 759–768.

Tarakhno O.V., Tregubov D.G., Zhernokl'ov K.V. et al. Teorіya rozvitku ta pripinennya gorіnnya. Praktikum [Theory of Development and Extinguishing of Combustion]: workshop in 2 parts. Harkіv: NUCZU, 2010. 822 p., available at: http://repositsc.nuczu.edu.ua/handle/123456789/3231 (accessed: June 28, 2018). (ua)

Dadashov I.F. Eksperimental'noe issledovanie izoliruyushchikh svoystv geleobraznykh sloev po otnosheniyu k param organicheskikh toksichnykh zhidkostey [Experimental study of the insulating properties of gel-like layers in relation to vapors of organic toxic fluids]. Problemy cyvil'nogo zahystu. 2017. Iss. 25. Pp. 22–27. (rus)

Dadashov I.F. Eksperimental'noe issledovanie vliyaniya tolshchiny sloya granulirovannogo penostekla na gorenie organicheskikh zhidkostey [Experimental research the influence of thickness of the layer of a granulated film glow on the burning of organic liquids]. Problemy pozharnoy bezopasnosti. 2018. Iss. 43. Pp. 38–44. (rus)

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Published

2018-08-17

How to Cite

Dadashov И. (2018) “Investigation of the influence of the layer thickness of a granulated foam glass on the liquids combustion of the series of alkans”, Journal of Civil Protection, 2(3), pp. 320–326. doi: 10.33408/2519-237X.2018.2-3.320.