Variants of using tripoli from the Khotynets deposit of the Oryol region as a sorbent for combustible liquids are proposed and tested. Prototype of a fire-extinguishing powder was made, the basis of fire-extinguishing powder is ammophos with the addition of 20 % tripoli. It is also recommended to use tripoli as a filler for fire barrier strips to contain the spread of smoldering combustion of organic dispersed materials.
Experimental studies are presented related to the quantitative assessment of the sorption capacity of tripoli samples with a dispersion of: granules — 1–3 mm, powder — 0.2–1 mm, dust — 0–100 microns. The possibility of its use at the industrial facilities as a sorbent of combustible liquids with high quantitative indicators is established. Laboratory and field fire tests were carried out concerning the prototype of fire-extinguishing powder based on ammophos with the addition of 20 % tripoli. The test results indicate that this fire-extinguishing powder meets all the requirements of GOST R 53280.4—2009 and has a good fire extinguishing ability. Also presented are the results of experimental studies on the prevention of the spread for smoldering combustion of the organic dispersed materials.
It is advisable to use zeolite-containing tripoli from the Khotynets deposit of the Oryol region as an additive in the fire-extinguishing powder to increase fluidity. In addition, it can be used as a sorbent for flammable combustible and toxic liquids in case of their emergency spillage at the industrial facilities. At the same time, both as an additive in the fire-extinguishing powder and as a sorbent it shows high efficiency of use. Also, in its pure form, it can be used as a filling of fire barrier strips to curb the spread of smoldering combustion of the organic dispersed materials.
2. GOST R 53280.4—2009. Automatic gas fire extinguishing systems. Extinguishing medium. Part 4. Dry fire extinguishing powders. General technical requirements. Test methods. Available at: https://docs.cntd.ru/document/1200073277 (accessed: January 14, 2022). (In Russ.).
3. Ovcharenko F.D., Suyunova Z.E., Teodorovich Yu.N. Dispersed minerals in the fire-extinguishing compositions. Kiev: Nauk. dumka, 1984. 160 p. (In Russ.).
4. Glinka N.L. General chemistry. Textbook and training manual (set of 2 books). Moscow: Yurayt, 2013. 226 p. (In Russ.).
5. Vernadskiy V.I. Terrestrial silicates, aluminosilicates and their analogues. 4-e izd., pererab. Leningrad–Moscow: ONTI-NKTP, 1937. 378 p. (In Russ.).
6. Shrayber G., Porst P. Fire extinguishers. Chemical-physical processes during combustion and extinguishing. Moscow: Stroyizdat, 1975. 240 p. (In Russ.).
7. Semenov N.N. On some problems of chemical kinetics and reactivity. Moscow: AN SSSR, 1958. 686 p. (In Russ.).
8. Gurvich S.M. Handbook of chemist-power engineering. In 3 volumes 2-e izd., pererab. i dop. Vol. 2. Energy oils and lubricants. Moscow: Energiya, 1972. 280 p. (In Russ.).
9. Kopylov S.N., Grigorev A.V., Kazakov A.V., Kushchuk V.A., Popov A.V., Bukhtoyarov D.V., Poltavets D.V. Sorbents for Elimination of Accident-Related Spillages of Organic Based Oil Products. Pozharnaya bezopasnost = Fire Safety. 2016. № 2. pp. 64–70. (In Russ.).
10. New handbook of the chemist and technologist. Raw materials and products of the industry of organic and inorganic substances. Pt. 1. Moscow– Saint-Petersburg: ANO NPO «Mir i Semya», ANO NPO «Professional», 2002. 988 p. (In Russ.).
11. Bukhtoyarov D.V. Laboratory Tests and Method to Define the Fire Extinguishing Concentration of Dry Chemical Compounds Discharged from Above. Pozharnaya bezopasnost = Fire Safety. 2010. № 3. pp. 130–132. (In Russ.).
12. Drayzdeyl D.D. Introduction to fire dynamics. Moscow: Stroyizdat, 1990. 424 p. (In Russ.).