Experimental assessment on <scp>LPG</scp> fire extinguishing properties of three chemical powders before and after milling action

Ibrahim, Haidar; Patruni, Jagannadha Rao

doi:10.1002/fam.2853

Cited by 16 publications

(4 citation statements)

References 15 publications

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“…Согласно [5] на изотермических резервуарах для тушения СУГ рекомендуется применять сухие порошки на базе бикарбоната натрия или бикарбоната калия. В работе [17] рассматривалось тушение сжиженных газов гидроксидом магния (Mg(OH) 2 ), бикарбонатом натрия (NaHCO 3 ) и коммерческими порошками ABC -MAP, а также влияние дисперсности порошка на эффективность тушения огня. Автоматическими установками порошкового пожаротушения должны оснащаться места возможных утечек СУГ (зоны размещения штуцеров, клапанов, оборудования рабочих площадок, мест установки отсекающей и другой арматуры, насосная станция).…”

Section: рисунок 2 -применение пористых материалов с размером пор меньше максимального безопасного экспериментального зазораunclassified

Features of Localization and Elimination of Fires in LPG and LNG Warehouses in Reservoirs in the Arctic Zone

Pelekh¹,

Simonova²

2021

XCROTPACOTPP

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The article considers emergency situations in LNG and LPG warehouses, describes the possibility of cascade development of the accident. An analysis of the possibility of damage to the process equipment of warehouses is presented. Existing accident leak detection and temperature monitoring systems are considered. An analysis of existing fire fighting techniques and fire extinguishing agents in LPG and LNG storage facilities has been carried out, and methods for localizing and eliminating LPG and LNG combustion have been improved, taking into account low temperatures in the Far North. The main disadvantages of the applied methods of fire extinguishing in case of fuel spills, including cryogenic ones, are given. The possibility of improving LPG and LNG combustion containment and elimination methods in view of low temperatures in the Far North without the use of water-based fire extinguishing compositions is being considered. The possibility of fire localization and elimination with the use of porous materials with pore size less than the maximum safe experimental gap, as well as emergency drain systems using a fire retardant with the design of heat exchange devices ensuring flame localization for a long period of time is proposed. The application of the presented solutions will increase the efficiency of fire fighting and ensure the safety of LPG and LNG warehouses.

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Features of Localization and Elimination of Fires in LPG and LNG Warehouses in Reservoirs in the Arctic Zone

Pelekh¹,

Simonova²

2021

XCROTPACOTPP

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“…ized numerous free radicals by completely reacting with nanoparticles possessing a larger specific surface area. 6 Experiments revealed that it had great extinguishing capabilities. However, amidst the ongoing quest for improved fire safety solutions, researchers have recently turned their attention to unconventional materials that promise to be novel fire extinguishing agents.…”

Section: Introductionmentioning

confidence: 99%

“…through the addition of flame retardants (such as Mg(OH) 2 ). These nanocomposites effectively neutralized numerous free radicals by completely reacting with nanoparticles possessing a larger specific surface area 6 . Experiments revealed that it had great extinguishing capabilities.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of magnesium hydroxide powder and dry powders for application in extinguishing petroleum fires

Le,

Thanh,

et al. 2024

Vietnam Journal of Chemistry

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Fire extinguishing agents are an important factor in the fight against fires. In this study, a new composite powder (CSPMS) was synthesized and used to extinguish fires caused by petroleum products. SiO2 nanoparticles, Mg(OH)2 nanoparticles, and nanocomposites of NH4H2PO4/chitosan (CSP) were combined to generate CSPMS powder. The structure and morphology of the material were characterized using methods such as XRD, SEM, FTIR, etc. The results showed that the synthesized Mg(OH)2 nanoparticle size ranged from 20 to 30 nm, and the NH4H2PO4 nanoparticle size ranged from 800 to 900 nm on the chitosan surface. The CSPMS material had particle sizes ranging from 2 to 3 µm, with a uniform distribution of SiO2 nanoparticles (50–100 nm) and Mg(OH)2 nanoparticles on the surface. The powdered materials were applied to extinguish gasoline and oil fires. CSPMS sample demonstrated the best fire extinguishing time and powder consumption (5.8 s and 12.2 g, respectively) and CO emission below the threshold of 400 ppm. Small‐scale fire extinguishing tests showed that CSPMS powder had better fire extinguishing capability, cooling time, and CO gas adsorption ability compared to commercial fire extinguishing powder.

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“…Surface modification such as a coating can do likewise. As a result, the extinguishing powder allows for more effective neutralization of free radicals and inhibition of the combustion process [ 1 , 7 , 9 , 10 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Magnesium Hydroxide Addition on the Extinguishing Efficiency of Sodium Bicarbonate Powders

et al. 2022

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This article analyzes the possibility of the modification of BC powder (a mixture of sodium bicarbonate and calcium carbonate) with magnesium hydroxide (Mg(OH)2). Extinguishing efficiency as well as the influence of this additive on other physicochemical properties were determined by performing a 13B fire test, rheological measurements of the powders, thermal tests (thermogravimetry (TG) and differential scanning calorimetry (DSC) in combination with quadrupole mass spectrometry (QMS)) and microscopic observations of the powders’ surface (scanning electron microscope (SEM) with energy dispersive X-ray analysis (EDS)). It was found that the increase of the Mg(OH)2 content causes deterioration of the rheological properties by increasing the slope angle of the flow curve in relation to the normal stress (the tangent of the flow curve slope varying from 0.258 for 5% of Mg(OH)2 up to 0.330 for 20% of Mg(OH)2). However, at the same time, the increased content of Mg(OH)2 increases the total energy of the chemical decomposition reaction (from −47.27 J/g for 5% of Mg(OH)2 up to −213.6 J/g for 20% of Mg(OH)2) resulting in the desirable higher level of heat removal from the fire. The initial extinguishing effect of the fire becomes more effective as the hydroxide content increases (within the first 2 s), but at a later stage (from t = 63 s), the temperature is no longer sufficient (it is below 350 °C) for thermal decomposition of Mg(OH)2. As such, the optimal content of Mg(OH)2 is 10–15%. The obtained results allowed for the assessment of the impact of individual powder components on its extinguishing effect and will contribute to the development of science in the field of developing new types of extinguishing powders.

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Experimental assessment on LPG fire extinguishing properties of three chemical powders before and after milling action

Cited by 16 publications

References 15 publications

Features of Localization and Elimination of Fires in LPG and LNG Warehouses in Reservoirs in the Arctic Zone

Features of Localization and Elimination of Fires in LPG and LNG Warehouses in Reservoirs in the Arctic Zone

Synthesis of magnesium hydroxide powder and dry powders for application in extinguishing petroleum fires

The Effect of Magnesium Hydroxide Addition on the Extinguishing Efficiency of Sodium Bicarbonate Powders

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