WO2024089457A1 - Mousse de lutte contre l'incendie comprenant un mélange de poudres isolantes et retardatrices de flamme - Google Patents

Mousse de lutte contre l'incendie comprenant un mélange de poudres isolantes et retardatrices de flamme Download PDF

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Publication number
WO2024089457A1
WO2024089457A1 PCT/IB2022/060657 IB2022060657W WO2024089457A1 WO 2024089457 A1 WO2024089457 A1 WO 2024089457A1 IB 2022060657 W IB2022060657 W IB 2022060657W WO 2024089457 A1 WO2024089457 A1 WO 2024089457A1
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WO
WIPO (PCT)
Prior art keywords
fire
foam
water
powder
firefighting
Prior art date
Application number
PCT/IB2022/060657
Other languages
English (en)
Inventor
Hamid GARROUSI
Original Assignee
Atrin Shimi Azardad
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atrin Shimi Azardad filed Critical Atrin Shimi Azardad
Publication of WO2024089457A1 publication Critical patent/WO2024089457A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0071—Foams

Definitions

  • the technical field of this invention relates to chemical materials firefighting Classifications of ABC group Fires (dry objects, gases, solvent, alcohols, aromatic and petroleum derivatives).
  • Patent No. W02006132568 titled FIRE-EXTINGUISHING COMPOSITION is a type of firefighting foam based on organofluorine compounds with additives of magnesium chloride, calcium, ammonium acetate, ethylene, and propylene glycol to form an aqueous layer on the surface of combustible liquids. During extinguishing, this foam forms on the surface of the liquid, which has a water layer that absorbs heat and prevents the supply of oxygen to the fire and backdraft. On the other hand, it prevents the corrosion of tanks. The resulting foam has a specific gravity of 1 g/l and a density of 1 .2 g/cm3.
  • the raw materials are installed on the device as long-term storage and are mixed only during use.
  • Water characterized with a density of 1 kg/m3 is one of the fire extinguishers that evaporates at 100 C and is used only for dry objects and is not easily available. When used in buildings, it causes an increase in resistive load and ultimately collapses. At the same time, the level of water contamination is important for this use, for example, water should not contain heavy salts or impurities and coarse particles.
  • 2- Firefighting foam with a density of 0.02 to 0.10 kg/m3 is vaporized at a temperature of about 120 C and given the presence of air in its bubble and the thinness of the membrane and low density; it is moved by the wind and not precipitated on the surface of the fire. It has less throwing power than water and is mostly applied to petroleum liquids. Heavy and hard water or salty sea water cannot be used to produce foam. Also, it cannot be used at temperatures above 600 C.
  • the firefighting powder is a combination of bicarbonates and carbonates with waterproof materials with a density of 1 kg/m3. It is used only to extinguish the fire at the time of its onset and a close and visible distance. The powders decompose at 70 to 120 C and emit carbon dioxide gas and cannot be used in large fires. Powders are often lumped inside the capsule and can no longer be used. [0014] 4- Sometimes two or three of the above substances are used together, however, they do not have the desired result and they neutralize each other's effect. These extinguishers are not rechargeable on site.
  • 9- Foams including fluorinated foam, are only used to extinguish petroleum liquids and do not work on other combustible materials such as wood.
  • burning means the reaction of oxygen with a substance in the vicinity of heat in the conditions required for oxidation
  • the special foam produced by applying its properties to the fire interrupts or destroys the complete oxidation reaction conditions and shortens the distance and time to reach these conditions which is called backdraft.
  • the special foam While using special foam in fire extinguishing, first of all, the special foam reaches the surface of the combustible material, separates the flame from the surface of the combustible material, then by increasing the boiling point, it increases the stability of the bubble against high-temperature fire and the possibility of more effectiveness on the combustible material. Also, the gases produced after the solution evaporates cause the fire to suffocate and cool down and dilute the oxygen around the combustible material. On the other hand, after covering the surface of the dry material, since part of the extinguishing material penetrates the dry material, it prevents backdraft. When physical and chemical changes occur in a material, therefore, the burning or oxidation conditions also change.
  • the volume of the solution increases and causes the flame to separate from the fuel.
  • the same composition of special powder and water is sufficient and does not need foam or bubbling liquid.
  • the bubble in the special foam increases the volume of the extinguishing material and also covers a larger surface of the burning material, giving more time to the firemen to maneuver.
  • the water that can be used in this composition does not need to be purified and light, heavy, purified, well, or river, and seawater can be used.
  • the special powder is composed of the following ingredients:
  • potassium carbonate is the best option for this property, but due to its high cost, 50% of its composition with calcium carbonate can be used.
  • Zinc stearate is the best option for this property, but zinc stearate, magnesium stearate, or stearic acid can be used.
  • 6- 3-5% fire retardant and thermal insulation materials aluminum sulfate is the best option for this property, but sodium sulfate, calcium sulfate, zinc sulfate, sodium silicate, micro silica, perlite, zeolite, or talc can be used.
  • thermal retardant aluminum oxide is the best option for this property, but aluminum trihydroxide or aluminum peroxide or aluminum potash or vermiculite or mica can be used.
  • 8- 5-10% bulking materials under heat starch is the best option for this property, but polycarbomer or polysaccharide or carboxyl methyl cellulose or hydroxypropyl methyl cellulose, or gluten can be used.
  • xanthan gum powder is the best option for this property, but guar gum can also be used.
  • the special foam consists of the following compounds:
  • foaming agents sodium lauryl ether sulfate is the best option for this property, but sulfonic acid or SLS or betaine, or ethoxylated alcohols can be used.
  • 2- 2-5% bubble stabilizers magnesium sulfite is the best option for this property, but aluminum sulfate or sodium sulfite, animal and plant protein concentrate, can be used.
  • xanthan gum solution is the best option for this property, but guar gum or starch can also be used.
  • Bulking the mixture can also be done using a foaming nozzle head.
  • a foaming nozzle head By changing the amount of dry powder, foam liquid, and water, it is possible to reach a density between 50 and 1000 kg/m3, which can be changed based on the type of fire.
  • the special foam can be changed in percentage and composition in the fireplace according to the type of fire.
  • the special foam can be sprayed by a mono pump or fire pump or water pump or air pressure available in capsules or larger tanks with a nozzle and transferred in a pipe to any distance and height and can be carried with a jumbo bag and by helicopter on reservoirs and forests.
  • the special foam for spraying does not need a foam producer nozzle head and transfers it with a normal hose.
  • 16- The foam is self-extinguishing and can be used as a fire extinguisher in warehouses, pastures, and forests so that if it is sprinkled on combustible materials a little ahead of the fire, it will extinguish itself when the fire reaches that area.
  • the special foam has materials that expand due to heat and increase the distance between the flame and the combustible material. These materials, while absorbing heat, prevent oxygen from reaching the surface of the fire.
  • Figure 1 Schematic view of preparation of firefighting foam with a mixture of insulating and fire-retardant powders
  • Raw materials may be stored on the device for a long time and are mixed only during use. As a result, there is no cost for the annual charge.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing Compositions (AREA)

Abstract

La présente invention concerne la production d'un agent d'extinction d'incendie avec la combinaison de poudre, de mousse et d'eau de sorte que, dans cette composition de mousse spéciale, elle sépare d'abord la flamme du matériau combustible et empêche l'oxygène d'atteindre le feu, puis en cassant et en combinant la poudre avec la source de chaleur, la chaleur est absorbée et des gaz de refroidissement tels que le dioxyde de carbone et l'ammoniac sont émis. Ceci amène l'agent combustible à se refroidir et à quitter la plage de point d'éclair. Étant donné le renforcement de la mousse avec un revêtement ignifuge et retardateur de flamme et des matériaux d'entraînement, des gaz, des vapeurs et de la fumée sont formés pour séparer la flamme du matériau combustible et empêcher l'oxygène d'atteindre le feu. Dans cette situation, la surface du matériau combustible sera isolée et ignifuge.
PCT/IB2022/060657 2022-10-25 2022-11-05 Mousse de lutte contre l'incendie comprenant un mélange de poudres isolantes et retardatrices de flamme WO2024089457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IR14013005488 2022-10-25
IR140150140003005488 2022-10-25

Publications (1)

Publication Number Publication Date
WO2024089457A1 true WO2024089457A1 (fr) 2024-05-02

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ID=90832130

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PCT/IB2022/060657 WO2024089457A1 (fr) 2022-10-25 2022-11-05 Mousse de lutte contre l'incendie comprenant un mélange de poudres isolantes et retardatrices de flamme

Country Status (1)

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WO (1) WO2024089457A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103007478A (zh) * 2012-12-31 2013-04-03 西安科技大学 一种灭火剂及其制备方法
RU2587177C2 (ru) * 2010-09-16 2016-06-20 Сянь Джей Энд Ар Файер Файтинг Эквипмент Ко.,Лтд. Основанная на ферроцене огнетушительная композиция
CN110478844A (zh) * 2019-08-30 2019-11-22 山东环绿康新材料科技有限公司 一种用于森林火灾的灭火阻燃剂及其制备方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2587177C2 (ru) * 2010-09-16 2016-06-20 Сянь Джей Энд Ар Файер Файтинг Эквипмент Ко.,Лтд. Основанная на ферроцене огнетушительная композиция
CN103007478A (zh) * 2012-12-31 2013-04-03 西安科技大学 一种灭火剂及其制备方法
CN110478844A (zh) * 2019-08-30 2019-11-22 山东环绿康新材料科技有限公司 一种用于森林火灾的灭火阻燃剂及其制备方法

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