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WO2013141367A1 - Agent extincteur d'incendie - Google Patents

Agent extincteur d'incendie Download PDF

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Publication number
WO2013141367A1
WO2013141367A1 PCT/JP2013/058316 JP2013058316W WO2013141367A1 WO 2013141367 A1 WO2013141367 A1 WO 2013141367A1 JP 2013058316 W JP2013058316 W JP 2013058316W WO 2013141367 A1 WO2013141367 A1 WO 2013141367A1
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WIPO (PCT)
Prior art keywords
water
fire
guar gum
fire extinguishing
mass
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2013/058316
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English (en)
Japanese (ja)
Inventor
真司 岩本
啓彦 大庭
栄治 三木
英順 用瀬
鈴木　裕
浩三 栗田
奥崎　秀典
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Furukawa Techno Material Co Ltd
University of Yamanashi NUC
Original Assignee
Furukawa Electric Co Ltd
Furukawa Techno Material Co Ltd
University of Yamanashi NUC
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 Furukawa Electric Co Ltd, Furukawa Techno Material Co Ltd, University of Yamanashi NUC filed Critical Furukawa Electric Co Ltd
Priority to JP2013539082A priority Critical patent/JP5469283B1/ja
Publication of WO2013141367A1 publication Critical patent/WO2013141367A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • A62D1/0028—Liquid extinguishing substances
    • A62D1/005—Dispersions; Emulsions

Definitions

  • the present invention relates to a extinguishant. More specifically, the present invention relates to a fire extinguishing agent suitable for rapid preparation of fire extinguishing water having good water dispersibility and dispersion stability and excellent fire extinguishing performance.
  • the amount of water resources may be limited near the fire site.
  • Phosphate inorganic compound fire extinguisher Usually, ammonium phosphate is contained as a main component. When fire extinguishing water containing a phosphate inorganic compound-based fire extinguishing agent is sprayed to the fire area, the ammonium phosphate is decomposed by heating, and the heat absorption effect thereby deprives surrounding heat. In addition, noncombustible gas is generated to form a gas layer around it to block oxygen, and when the temperature is further increased, it changes to a molten glass shape and coats the combustion surface to block oxygen.
  • phosphate inorganic compound-based extinguishant to enhance the extinguishing action of the extinguishing water
  • phosphate inorganic compounds are hardly soluble in water, they tend to form a continuous powder (Mamako).
  • the powder is a lump which is not dispersed or dissolved in the liquid when the powder is charged into the liquid and is aggregated, and has a structure in which the powder is wrapped in an outer layer swollen with the liquid. It is also called dama, and once formed, it becomes difficult to dissolve even if the entire aggregate swells with liquid.
  • the phosphate mineral compound stored for a long period of time precipitates into a mass and becomes a mass
  • an apparatus for pulverizing this is required at the time of use.
  • the fact that the phosphate inorganic compound is difficult to dissolve in water also causes a problem that it takes time and effort to wash materials and equipment.
  • the ammonium phosphate is similar to the component used for fertilizers, it is pointed out that there are environmental problems that cause the eutrophication phenomenon in the sprayed soil.
  • fire extinguishing water containing synthetic surfactant-based fire extinguishing agent has low surface tension and penetrates into fire extinguishing objects such as burnables and combustibles. Cheap. Moreover, the foam formed by the impact which collided covers a combustion thing and a combustible thing, and the effect of fire-extinguishing / re-fire prevention / fire spread suppression improves by shielding oxygen and cutting off. Since the concentration of the surfactant type fire extinguishant added to water is low, and the fire extinguishing water can be prepared by adding only the fire extinguishing agent to the water, the extinguishing water can be prepared relatively quickly.
  • (C) Water-absorbing polymer fire extinguishing agent A water-absorbing polymer containing water-absorbing polymer as a main component and sufficiently absorbing water is brought into contact with a combustible or combustible material to exhibit fire extinguishing, reburning prevention, and fire spread suppressing effect. .
  • fire extinguishing water containing water-absorbing polymer fire extinguishing agents has relatively weak penetration, so it is difficult for the fire extinguishing water to spread from the attached part to the surroundings, and the fire extinguishing, relapse prevention and fire spread suppressing effects to the surroundings are expected very much Can not.
  • the water-absorbing polymer causes the foot to slip during work such as after-fire treatment and on-site investigations.
  • water-absorbing polymers are difficult to biodegrade and accumulate in the environment to adversely affect ecosystems.
  • Patent Documents 1 to 3 are for rapid preparation of the fire extinguishing water. It is not suitable.
  • the fire extinguishing water is not prepared according to the procedure, there is a concern that the components may not be completely dissolved and may become a continuous powder.
  • the thickener may form a continuous powder when it is added to water, and it may not be possible to impart the effect expected as fire extinguishing water.
  • An object of the present invention is to provide a fire extinguishing agent suitable for rapid preparation of fire extinguishing water which is highly dispersible in water and exhibits viscosity or pseudoplasticity. Moreover, this invention makes it a subject to provide the method of preparing fire extinguishing water using the said fire extinguisher, and extinguishing a fire using this.
  • pseudo plasticity refers to one of the parameters showing the shear rate dependency of viscosity, and is a property in which the viscosity decreases as the shear rate increases. It is also called pseudoplasticity, shear thinning property, and the like.
  • a fire extinguishing agent containing 30 to 400 parts by mass in total of oligosaccharides is achieved by the following means.
  • the fire extinguisher as described in ⁇ 1> which contains at least 1 sort (s) chosen from the group which consists of inorganic sodium salt, inorganic potassium salt, ammonium salt, and a foaming agent further as a dispersion aid of ⁇ 2> crude guar gum.
  • the fire extinguisher as described in ⁇ 2> or ⁇ 3> which is at least 1 type of foaming agent.
  • the fire extinguisher as described in any one of ⁇ 1>- ⁇ 4> which contains at least 1 sort (s) chosen from sucrose and top white sugar as a dispersion
  • the fire extinguisher according to any one of ⁇ 1> to ⁇ 5> which comprises 5 to 75 parts by mass of a water-soluble high molecular weight polysaccharide other than guar gum derived from crude guar gum per 100 parts by mass of ⁇ 6> crude guar gum Agent.
  • the fire extinguisher according to ⁇ 6> wherein the water-soluble polymer polysaccharide other than guar gum derived from ⁇ 7> crude guar gum is at least one selected from the group consisting of tamarind seed gum, alginic acid ester, xanthan gum and pullulan.
  • ⁇ 9> The fire extinguisher as described in any one of ⁇ 1> to ⁇ 8>, wherein crude guar gum is coated with a surfactant.
  • the ⁇ 11> anionic surfactant is at least one member selected from the group consisting of ⁇ -olefin sulfonate, alkyl sulfate, polyoxyethylene alkyl ether sulfate and N-acyl taurine salt, and nonionic surfactant
  • the fire extinguisher according to any one of ⁇ 1> to ⁇ 11> which contains at least one selected from the group consisting of a colorant, an antifreeze, an antioxidant, a corrosion inhibitor, and a fungicide.
  • the fire extinguisher according to any one of ⁇ 1> to ⁇ 12> which is in the form of granules or tablets.
  • the fire extinguisher as described in any one of ⁇ 1>- ⁇ 13> which does not contain a ⁇ 14> starch.
  • a method for preparing extinguishing water comprising the steps of dispersing and dissolving the extinguishant described in any one of ⁇ 15> ⁇ 1> to ⁇ 14> in water.
  • the fire extinguishing method of the fire including the process of discharging the water for fire extinguishing prepared by the preparation method of the fire extinguishing water as described in ⁇ 16> ⁇ 15> to a fire site.
  • the extinguishant of the present invention is excellent in dispersibility in water.
  • extinguishing water having appropriate viscosity can be prepared.
  • This fire extinguishing water does not diffuse excessively when discharged. That is, the fire extinguishing water can be more efficiently sent to the fire site with a small amount of water discharge.
  • the fire extinguishing water spatters and diffuses appropriately when it collides with a combustible or combustible, and it hardly flows off after adhering to the combustible or combustible. Therefore, the fire extinguishing efficiency is higher.
  • the fire can be efficiently extinguished with less water discharge. Therefore, it is possible to efficiently extinguish the fire using the limited amount of water resources at the fire site, and at the same time, it is possible to further suppress the secondary damage caused by the extinguishing water discharged.
  • FIG. 1 a It is a schematic diagram which shows arrangement
  • the fire extinguishing agent of the present invention contains at least a crude guar gum having a thickening action and a dispersion aid which promotes the dispersion of the crude guar gum in water.
  • the extinguishant of the present invention is used for the purpose of preparing extinguishing water by dispersing it in water.
  • the crude guar gum used for the fire extinguishing agent of the present invention is a powder preparation obtained by crushing the endosperm part of guar, which is a leguminous plant, or a partially purified product thereof. including.
  • "crude guar gum” refers to guar gum whose polysaccharide content in its dry matter is less than 95% by mass.
  • the mass of crude guar gum dry matter is a value obtained by measuring the water content of crude guar gum and subtracting the water content from the mass of crude guar gum. Also, the water content of crude guar gum can be measured by Karl Fischer moisture meter (coulometric titration or volumetric titration).
  • the moisture meter is available, for example, from Mitsubishi Chemical Analytech. Furthermore, in the present specification, the amount of polysaccharide in crude guar gum is the drying under reduced pressure, the protein is Kjeldahl, the lipid is Soxhlet according to the description of the analysis manual of the Japanese food standard composition table analysis manual. The extraction method, the dietary fiber is measured by the enzyme weight method, and the ash content is directly measured by the ashing method, and the total amount of these is subtracted from the total amount of crude guar gum.
  • content of the polysaccharide in the crude guar gum dry product used for this invention is 40 to 95 mass%, It is more preferable that it is 70 to 95 mass%, 80 to 95 mass% More preferably, it is less than 10%.
  • RG 1000 trade name, manufactured by MRS Polysaccharides Co., Ltd.
  • Crud guar gum is less likely to form a powder when added to water, as compared to purified guar gum (a preparation in which crude guar gum is refined and the polysaccharide content is increased to 95% by mass or more), and dispersibility Is higher.
  • the fire extinguishing water prepared using a fire extinguishing agent comprising a mixture containing crude guar gum is difficult to be separated into layers even if shaken or the like, and the homogeneity or dispersibility of its component composition is excellent. Therefore, the dispersion of the performance and quality of the prepared extinguishing water can be further suppressed.
  • the crude guar gum does not lose its dispersibility in water of high hardness such as seawater, and can impart thickening property. Therefore, even when using seawater often present at a fire site, it is possible to prepare extinguishing water having the same performance as when using ordinary water, and it is excellent in practicability.
  • the fire extinguishant of the present invention contains the dispersion aid described below.
  • the fire extinguishant of the present invention contains at least one selected from monosaccharides and oligosaccharides as a dispersion aid for crude guar gum.
  • monosaccharide 1 type (s) or 2 or more types selected from glucose, galactose, mannose, fructose etc. are mentioned.
  • oligosaccharides examples include disaccharides such as lactose, sucrose and maltose, trisaccharides such as nigerotriose, maltotriose, melezitose, maletotriulose, raffinose and kestose, and tetrasaccharides such as distose, nigerotetraose and stachyose 1 type or 2 types or more selected from etc. are mentioned.
  • the above monosaccharides and oligosaccharides are adsorbed to crude guar gum to prevent excessive aggregation between crude guar gums.
  • the dispersion aid rapidly settles and disperses in water, the crude guar gum adsorbed to the dispersion aid is also dragged by the dispersion aid and easily settles into water, and the crude guar gum into water Dispersion is promoted.
  • the total amount of monosaccharides and oligosaccharides is 30 to 400 parts by mass, more preferably 50 to 200 parts by mass, and 70 to 180 parts by mass with respect to 100 parts by mass of crude guar gum. It is further preferred that By setting the content of the dispersion aid in the above range, the dispersibility or dispersion stability of crude guar gum can be further enhanced. When the content of monosaccharides and oligosaccharides is too high, the amount of the fire extinguishing agent used for preparing the fire extinguishing water must be increased, and the usability and economic efficiency of the fire extinguishing agent decrease.
  • total amount of monosaccharides and oligosaccharides means not only forms containing both monosaccharides and oligosaccharides, but also forms containing only oligosaccharides without monosaccharides, Alternatively, it is also used for forms containing only oligosaccharides and no oligosaccharides.
  • the total amount of monosaccharides and oligosaccharides means the amount of oligosaccharides, and in the form not containing oligosaccharides, the “total amount of monosaccharides and oligosaccharides” is the amount of monosaccharides Means
  • the extinguishant of the present invention preferably contains, as a dispersion aid, at least one selected from sucrose and white sucrose, and particularly preferably contains white sucrose.
  • Super white sugar is a granular sugar obtained by adding invert sugar to sucrose, and more specifically, sucrose is a main component, and invert sugar (a mixed sugar of glucose and fructose) and water are on the crystal surface of sucrose.
  • invert sugar a mixed sugar of glucose and fructose
  • the proportion of invert sugar in top white sugar which can be used as a dispersion aid is preferably 0.1 to 5.0% by mass, more preferably 0.2 to 3.0% by mass, and still more preferably 0.5 to 2 It is .0 mass%.
  • the proportion of water in the white sucrose that can be used as a dispersion aid is preferably 0.1 to 5.0% by mass, more preferably 0.2 to 2.0% by mass, and still more preferably 0.5. It is ⁇ 1.5 mass%.
  • the upper white sugar is moist on the crystal surface by the invert sugar solution, so when mixed with the crude guar gum, the crude guar gum is appropriately adsorbed to become granular. Thereby, when the fire extinguishing agent of the present invention is added to water, crude guar gum can be more easily sedimented, and it can be more reliably prevented that it becomes suspended powder or remains undissolved while floating on the water surface.
  • sucrose when “sucrose” is simply referred to as a component in a fire extinguishing agent, it is used in a meaning that does not include sucrose contained in white sugar. Moreover, in the present specification, “upper white sugar” is included in “at least one selected from monosaccharides and oligosaccharides”.
  • the fire extinguisher of this invention is a form which contains reducing sugar as a dispersion adjuvant. Under high temperature at the fire site, it can react with amino compounds to form carbides (Maillard reaction) to reinforce the fire-extinguishing action.
  • the Maillard reaction is a reaction in which a reducing sugar and an amino compound are reacted by a non-enzymatic reaction to form a brown substance having a more complicated molecular structure. It easily progresses by high temperature heating, often accompanied by caramelization, carbonization and the like.
  • the high molecular weight polysaccharides hardly function as a dispersing aid for crude guar gum.
  • starch is added instead of monosaccharides and oligosaccharides, the dispersibility of crude guar gum is not improved.
  • the extinguishant of the present invention preferably contains no starch.
  • the fire extinguishing agent of the present invention is at least one member selected from the group consisting of inorganic sodium salt, inorganic potassium salt, ammonium salt, and a foaming agent as a dispersing aid for crude guar gum in addition to the above monosaccharides and oligosaccharides.
  • the form containing is also preferable.
  • the inorganic sodium salt include one or more selected from sodium chloride, sodium sulfate, sodium nitrate, sodium phosphate, sodium pyrophosphate, sodium polyphosphate, sodium metaphosphate and the like.
  • Examples of the inorganic potassium salt include one or more selected from potassium chloride, potassium sulfate, potassium nitrate, potassium phosphate, potassium pyrophosphate, potassium polyphosphate, potassium metaphosphate and the like.
  • As said ammonium salt 1 type (s) or 2 or more types selected from ammonium chloride, ammonium sulfate, ammonium phosphate etc. are mentioned.
  • inorganic sodium salts, inorganic potassium salts and ammonium salts are also adsorbed to crude guar gum and have an effect of preventing excessive aggregation of crude guar gums.
  • dispersion aid rapidly settles and disperses in water, the crude guar gum adsorbed to the dispersion aid is also dragged by the dispersion aid and easily settles into water, and the crude guar gum into water Dispersion will be promoted.
  • the blowing agent has a composition that generates a gas in water when the extinguishant containing it is poured into water.
  • a foaming agent comprising sodium hydrogencarbonate and at least one organic acid selected from citric acid, fumaric acid, succinic acid, malic acid etc., a combination of ammonium hydrogencarbonate and the above organic acid And a foaming agent obtained by combining sodium nitrite and ammonium chloride.
  • the above-mentioned foaming agent is foamed in water to stir the water and improve the dispersibility of crude guar gum and the like.
  • each component constituting the blowing agent may be independently present in the extinguishant. That is, when the foaming agent comprising a plurality of components is blended into the extinguishant, the extinguishant comprising the components separately blended is also included in the extinguishant comprising the foaming agent in the present invention.
  • the fire extinguishing agent of the present invention contains at least one selected from the group consisting of inorganic sodium salt, inorganic potassium salt, ammonium salt, and a foaming agent as a dispersion aid of crude guar gum
  • the content thereof is particularly limited
  • the total amount of the inorganic sodium salt, the inorganic potassium salt, the ammonium salt and the foaming agent is 50 to 200 parts by mass with respect to 100 parts by mass of crude guar gum from the viewpoint of further improving the dispersibility.
  • the total amount of monosaccharides and oligosaccharides in the fire extinguishing agent is about 30 to 100 parts by mass with respect to 100 parts by mass of crude guar gum
  • the total amount of inorganic sodium salt, inorganic potassium salt, ammonium salt and foaming agent is 50. It is preferable to contain up to 200 parts by mass.
  • the term "the total amount of inorganic sodium salt, inorganic potassium salt, ammonium salt, and foaming agent" is a form including all of inorganic sodium salt, inorganic potassium salt, ammonium salt, and foaming agent.
  • inorganic sodium salt, inorganic potassium salt, ammonium salt, and a foaming agent means the amount of inorganic sodium salt Do.
  • the fire extinguishing agent of the present invention may contain a water-soluble polymer polysaccharide other than guar gum derived from the crude guar gum.
  • the water-soluble polymer polysaccharide is not particularly limited, but one or more selected from the group consisting of tamarind seed gum, alginate, xanthan gum and pullulan can be suitably used. Among them, xanthan gum is preferably used.
  • Soaxane XG-350 (trade name, manufactured by MRC Co., Ltd.) can be suitably used.
  • the "water-soluble polymeric polysaccharide” is preferably soluble in water at 30 ° C, and more preferably soluble in water at 25 ° C or less.
  • the thickening action of crude guar gum can be appropriately reinforced, whereby the adhesion of prepared fire extinguishing water, storage stability of the fire extinguishing water concerned It is possible to improve the properties and thermal stability.
  • the fire extinguishing agent of the present invention contains a water-soluble polymer polysaccharide other than guar gum derived from crude guar gum
  • the content of the water-soluble polymer polysaccharide is 5 to 75 parts by weight with respect to 100 parts by weight of crude guar gum. It is preferably part, more preferably 10 to 50 parts by mass, and still more preferably 12 to 40 parts by mass.
  • the extinguishant of the present invention can contain an anionic surfactant or a nonionic surfactant or a combination thereof.
  • anionic surfactant 1 type (s) or 2 or more types of surfactant of a carboxylic acid type, a sulfuric acid ester type, a sulfonic acid type, and a phosphoric acid ester type are mentioned, for example,
  • AOS alpha- Olefin sulfonate
  • AS alkyl sulfate
  • AES polyoxyethylene alkyl ether sulfate
  • N-acyl taurine salt N-acyl taurine salt and the like
  • nonionic surfactant examples include one or more of fatty acid ester, ether type, ether / ester type, polyhydric alcohol type, polyhydric alcohol / ester type surfactant, and specific examples thereof Examples include polyoxyethylene alkyl ether, sucrose fatty acid ester, glycerin fatty acid ester (monoglyceride, diglyceride) and the like.
  • the above-mentioned anionic surfactant is excellent in diffusion and solubility in water, so by including it in a fire extinguishing agent, the dispersibility of crude guar gum and polysaccharides in water is improved to increase the viscosity rising speed. And can impart surface activity to fire extinguishing water. Moreover, if the said nonionic surfactant is contained in a fire extinguisher, surface activity can be provided to the water for fire extinguishing, without inhibiting a thickening effect and viscosity rise speed. Furthermore, any of the above-described surfactants can suppress the growth of microorganisms depending on the amount added, and also contribute to sustaining the pseudoplasticity of fire extinguishing water for a long time.
  • an amino compound is used as a surfactant, not only the surface activity to fire extinguishing water is imparted, but also the Maillard reaction with reducing sugar proceeds at high temperatures at the fire site, and carbide can be formed. The action can be reinforced.
  • the total content of the surfactant is preferably 1 to 40 parts by mass, and 2 to 30 parts by mass with respect to 100 parts by mass of crude guar gum. Is more preferably 5 to 20 parts by mass.
  • the surfactant contained in the composition of the extinguishant of the present invention is preferably less than 20.0% by mass, more preferably less than 10.0% by mass, and less than 7.0% by mass. Is more preferred. If the content of the surfactant is too large, the solubility in water may be deteriorated, and the viscosity increase rate of the fire extinguishing water may be slow, and at the same time, the toxicity to aquatic organisms is also concerned.
  • the extinguishant may contain one or more other components such as a colorant, an antifreeze solution, an antioxidant, a corrosion inhibitor, and an antifungal agent, in addition to the components described above.
  • the content of the other components in the extinguishant of the present invention is preferably 0.01 to 1.0 parts by mass, and preferably 0.1 to 0.5 parts by mass with respect to 100 parts by mass of crude guar gum. Is more preferred.
  • the form of the extinguishant of the present invention is not particularly limited, but it is preferable that each raw material is in the form of a homogeneously mixed composition.
  • the extinguishant of the present invention may be in the form of a solid, fluid or liquid, but is preferably in the form of powder, granules or tablets, from the viewpoint of handling and dispersibility in water.
  • the tablet form is more preferable, and the granular form is particularly preferable.
  • Granules in the present invention refer to those obtained by forming the powder into slightly larger particles.
  • the extinguishant of the present invention can be obtained by mixing the above-mentioned respective raw materials in a desired ratio, and molding the mixture into a desired dosage form by an ordinary method.
  • Granular fire extinguishing agent stirring granulation method, extrusion granulation method, tumbling granulation method, tablet granulation method, fluid bed granulation method, spray drying granulation method, melt granulation method, vacuum freeze drying method It can be prepared by a usual method such as suspension aggregation granulation method or coating granulation method. Moreover, in preparation of a granular fire extinguisher, surfactant mentioned above as a binder for granulation can also be used. In addition, when the fire extinguishing agent contains super-white sugar, it is possible to naturally obtain a granular fire extinguishing agent by simply mixing the raw materials.
  • the extinguishant of the present invention is in the form of granules, 80% by mass or more, more preferably 90% by mass or more, still more preferably 95% by mass or more, still more preferably 97 to 100% by mass of the whole extinguishant
  • they are granules of 1 to 1.5 mm, preferably 0.2 to 1.0 mm.
  • Such granular fire extinguishing agents can be obtained by subjecting the granules to a desired screen.
  • the said particle size can be measured by measurement on the photograph or the image
  • the fire extinguisher of the present invention may be subjected to a coating treatment as required.
  • crude guar gum that has been subjected to a coating treatment can also be used as a raw material.
  • the material used for coating is preferably a surfactant.
  • Preferred examples of the surfactant are the same as the surfactants described above.
  • the coating process can be performed by a conventional method, for example, can be performed in processes such as stirring granulation method, rolling granulation method, fluidized bed granulation method, coating granulation method, etc. It can also be performed using another coating apparatus or process.
  • the coating can further enhance the dispersibility of the extinguishant.
  • Water for fire extinguishing can be prepared by dispersing and dissolving the fire extinguishing agent of the present invention in water.
  • a fire extinguishing activity is carried out by discharging the extinguishing water.
  • crude guar gum in the fire extinguishing water (if the fire extinguishing agent contains a polymeric polysaccharide, the total of crude guar gum and polymeric polysaccharides so that the prepared fire extinguishing water exhibits appropriate pseudoplastic properties) It is preferable to adjust the content of 0.1 to 5.0% by mass, more preferably 0.15 to 3.0% by mass, and still more preferably 0.2 to 1.0% by mass.
  • the extinguishant may be added to the water all at once, or may be added to the water several times. Since the extinguishant of the present invention exhibits good dispersibility only by adding it to water, it is possible to easily prepare extinguishing water having a homogeneous property.
  • the fire-extinguishing water showing pseudo plastic properties prepared using the fire-extinguishing agent of the present invention has less diffusion due to air flow after water discharge than water and synthetic surfactant water extinguishing water, and water absorbing polymer water fire extinguishing water Because it diffuses appropriately, it can spread appropriately and land on the fire site while holding enough water.
  • the updraft due to the fire and the excessive diffusion due to the airflow generated by the flight of the helicopter or aircraft are suppressed, and it is possible to land on the fire site while spreading appropriately, so the fire extinguishing water that contributes to extinguishing The proportion can be further increased, and it exhibits high extinguishing action with less water discharge.
  • the fire-extinguishing water exhibiting pseudoplasticity prepared using the fire-extinguishing agent of the present invention is scattered by the impact of the landing and adheres to surrounding combustibles and combustibles to enhance the fire-extinguishing action.
  • Post-adhesion fire-fighting water is less likely to run down to develop higher viscosity, and stays in a place where it adheres for a long time, thus exhibiting a continuous fire-extinguishing action and fire spread prevention action.
  • the fire extinguishing water contains a surfactant
  • the permeability to combustibles and combustibles is enhanced, so that a high cooling effect is exhibited and, at the same time, the refire prevention effect of the extinguished part and the fire spread suppressing effect of the unburned matter are also exhibited.
  • the water for fire extinguishing contains saccharides
  • the fire spread prevention effect by carbonizing this saccharides at high temperature is also exhibited.
  • the fire extinguishing method of the present invention includes the step of discharging the fire extinguishing water prepared by the above-described method of preparing fire extinguishing water of the present invention to a fire site.
  • the fire-extinguishing water showing pseudo plastic properties prepared using the extinguishant of the present invention is discharged to the fire site.
  • the method of discharging the fire extinguishing water and methods such as spraying from above, water discharging from a fire-fighting vehicle, manual spraying using a bucket, etc. may be used. It is particularly suitable for spraying from the sky to a fire site using an aircraft such as a boat or an airplane.
  • the fire extinguishing water discharged by the fire extinguishing method of the present invention exhibits pseudo plasticity, it can suppress excessive diffusion due to air flow after water discharge such as water and extinguishing water of surfactant type, It diffuses moderately compared to water extinguishing water of water absorbing polymer type. Therefore, according to the fire extinguishing method of the present invention, it is possible to cause the target area of the fire site to be landed and dispersed with high accuracy while the fire extinguishing water holding the water is properly diffused.
  • the extinguishing water to be discharged exhibits pseudoplasticity, it is scattered by the impact of the landing and adheres to surrounding combustibles and combustibles to enhance the fire extinguishing action. After adhesion, the fire extinguishing water is difficult to run down to develop higher viscosity, and stays in a place where it adheres for a long time, so it exhibits a continuous fire-extinguishing action and fire spread preventing action.
  • the fire extinguishing water contains a surfactant
  • the permeability to combustibles and combustibles is enhanced, so that a high cooling effect is exhibited and, at the same time, the refire prevention effect of the extinguished part and the fire spread suppressing effect of the unburned matter are also exhibited.
  • the water for fire extinguishing contains saccharides
  • the fire spread prevention effect by carbonizing this saccharides at high temperature is also exhibited.
  • Preparation Example 2 Preparation of fire extinguishing water (fresh water) Prepare 200 ml of distilled water (DW) at 25 ° C ⁇ 0.5 ° C in a beaker, and the total content of crude guar gum and xanthan gum is 0.20 to 1.25% by weight. It was dispersed and dissolved as described above to prepare extinguishing water. Dispersion and dissolution were carried out by setting the stirring rotational speed to 1000 rpm and stirring for 5 minutes.
  • DW distilled water
  • Preparation Example 3 Preparation of Water for Fire Fighting (Seawater) A fire extinguishing water was prepared in the same manner as in Preparation Example 2 except that, in Preparation Example 2, artificial seawater with the following composition was used instead of distilled water.
  • guar gum RG 1000 crude guar gum (made by M.R. Sea polysaccharides)
  • Guar gum RG700 Purified guar gum (manufactured by MRC polysaccharides)
  • Soaxane XG-350 xanthan gum (manufactured by M.C.C. polysaccharides)
  • Upper white sugar Mitsui Co., Ltd.
  • extinguishant present invention products 1 to 26, comparative products 1 to 14
  • Tables 1 and 2 above are obtained by simply mixing the raw materials.
  • Invention Products 3 to 5 and Invention Products 15 to 26 and Comparative Products 5 and 7 containing a predetermined amount of superwhite sugar became granular fire extinguishing agents, and the other fire extinguishing agents were powdery.
  • the extinguishant (present invention products 27 to 38) described in Table 3 above is a granular extinguishant obtained by granulating to a desired particle diameter by a stirring granulation method. 98% by mass or more of each extinguishant described in Table 3 was in the range of the particle size described in Table 3, and the rest were broken pieces or powder of finely divided granules.
  • the fire extinguishing agent described in the above Table 4 is obtained by coating crude guar gum, Soaxan XG 350 in advance with glycerin fatty acid ester (trade name: MCA-150, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) or anionic surfactant (Lipolan PB-800). It is an extinguishing agent obtained by simply mixing each raw material using this.
  • the extinguishant described in the above Table 5 is a extinguishant obtained by simply mixing the respective raw materials.
  • inventive products 45 to 50 have the same composition as the fire extinguishing agent, the method for preparing the fire extinguishing water using this and the test method are different, so the columns are separately described. That is, the fire extinguishing agent of the invention 46 was dispersed in a water temperature of 10.degree. C., the fire extinguishing agent of the invention 47 was dispersed in a water temperature of 38.degree.
  • fire extinguishing agent of the invention 48 was dispersed in acidic water of pH 3.31
  • the fire extinguishing agent of the invention 49 was dispersed in alkaline water of pH 9.75
  • other, fire extinguishing water was prepared in the same manner as in Preparation Example 2.
  • the fire extinguishing water prepared by the method described in Preparation Examples 2 and 3 using the fire extinguishing agent according to the present inventions 1-53 not only has the viscosity shown in each table but also has pseudoplasticity. It was a thing.
  • ⁇ Test Example 3 Evaluation of Viscosity Viscosity of fire extinguishing water after preparation for fire extinguishing water by the same method as the above Preparation Examples 2 and 3 and standing for 10 minutes at 25 ° C. ⁇ 0.5 ° C. for 24 hours (unit: The viscosity of the rotor no. It measured at 3 or 2 and 60 rpm. The results are shown in Tables 1 to 5 above. If the viscosity after standing for 10 minutes is 150 mPa ⁇ s or more and the equilibrium viscosity (viscosity after standing for 24 hours) is 200 mPa ⁇ s or more, it can be judged that the practicability is excellent.
  • the viscosity is low and the difference in viscosity with water is small, it is likely to be scattered over a wide range like water, and an effective fire extinguishing ability can not be obtained. Is limited. Generally, if the viscosity is about 150 mPa ⁇ s or more, it is considered that the fire extinguishing can be performed more efficiently than water. In addition, in practical use, if the viscosity is up to about 2000 mPa ⁇ s, effective extinguishing is possible.
  • Adhesive water adhesion amount The amount of adhesion of fire extinguishing water is by immersing the above 3 pieces of wood whose ends are fixed with a jig vertically to the height of 150 mm from the end opposite to the jig for 2 seconds in the fire extinguishing water for 2 seconds, The amount of adhesion of fire extinguishing water per wood piece was calculated from the difference between the weight and the weight after 5 minutes (g), and in view of the results of examination of the burning rate described later, evaluation was made according to the following evaluation criteria. The results are shown in Tables 1 to 5 above.
  • A The adhesion amount of fire extinguishing water per wood piece is 0.40 g or more.
  • B The adhesion amount of fire extinguishing water per wood piece is 0.30 g or more and less than 0.40 g.
  • C The adhesion amount of fire extinguishing water per wood piece is less than 0.30 g.
  • FIG. 2 An example of the result of the fire spread prevention performance (adhesion amount of water for fire extinguishing and burning speed) is shown in FIG.
  • the horizontal axis represents the amount of attached fire-fighting water per 150 mm of wood, and the vertical axis represents the burning rate.
  • the burning rate is about 0.06 cm / sec or more
  • the test piece burns up to 140 mm at a burning rate of about 0.06 cm / sec. There is.
  • the adhesion amount at this boundary was calculated from the approximate curve in FIG. 2 and was about 0.39 g (per 150 mm per wood piece).
  • ⁇ Test Example 5 Evaluation of spray density and diffusivity of fire extinguishing water Using a small wind tunnel of 600 mm, using an air velocity of 5.7 m / s, extinguishing water spray amount of 200 g, and fire extinguishing water spraying height of 590 mm The flight was simulated, and the distribution density and diffusion of fire extinguishing water were observed.
  • Table 6 shows the experimental results on the spray density and diffusivity of fire extinguishing water.
  • the spray density was calculated using an area to secure 1.6 L / m 2 or more as the effective extinguishing area, and the effective extinguishing area when the extinguishing water was water was compared as 1.
  • the diffusivity was evaluated by the amount of scattering to the outside of the wind tunnel by wind (disappeared amount).
  • the lost amount in Table 6 below is the ratio (% by mass) of the lost amount to the mass of 200 g of the extinguishing water sprayed.
  • the extinguishant of the present invention is suitable for preparation of extinguishing water with high extinguishing performance.
  • the fire extinguishing agent of the present invention can be suitably used particularly for preparation of fire extinguishing water in the case where water is released (dispersed) from above the fire to the fire extinguishing target using a helicopter, aircraft or the like.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Dispersion Chemistry (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
PCT/JP2013/058316 2012-03-23 2013-03-22 Agent extincteur d'incendie Ceased WO2013141367A1 (fr)

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JP2016174803A (ja) * 2015-03-20 2016-10-06 第一化成産業株式会社 環境配慮型泡消火薬剤
JP2016174802A (ja) * 2015-03-20 2016-10-06 第一化成産業株式会社 環境配慮型泡消火薬剤
EP3980140A4 (fr) * 2019-06-07 2023-06-14 FRS Group, LLC Retardateur à long terme à inhibiteurs de corrosion et procédés de fabrication et d'utilisation associés
US11865392B2 (en) 2020-12-15 2024-01-09 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same
US11975231B2 (en) 2022-03-31 2024-05-07 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same

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CN111969425A (zh) * 2020-07-27 2020-11-20 朱春云 一种预埋式高压配电柜气流导通泄压防爆阻燃灭火机构

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JP2008119303A (ja) * 2006-11-14 2008-05-29 Morita Corp 消火薬剤
WO2011046188A1 (fr) * 2009-10-14 2011-04-21 株式会社モリタホールディングス Composition d'agent extincteur gonflée à l'eau et agent extincteur aqueux à base de mousse

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WO1999043391A1 (fr) * 1998-02-27 1999-09-02 Solutia Inc. Concentres resistant au feu, leur procede de preparation et leur utilisation
JP2008119303A (ja) * 2006-11-14 2008-05-29 Morita Corp 消火薬剤
WO2011046188A1 (fr) * 2009-10-14 2011-04-21 株式会社モリタホールディングス Composition d'agent extincteur gonflée à l'eau et agent extincteur aqueux à base de mousse

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016174803A (ja) * 2015-03-20 2016-10-06 第一化成産業株式会社 環境配慮型泡消火薬剤
JP2016174802A (ja) * 2015-03-20 2016-10-06 第一化成産業株式会社 環境配慮型泡消火薬剤
EP3980140A4 (fr) * 2019-06-07 2023-06-14 FRS Group, LLC Retardateur à long terme à inhibiteurs de corrosion et procédés de fabrication et d'utilisation associés
US11819722B1 (en) 2019-06-07 2023-11-21 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same
US11819723B2 (en) 2019-06-07 2023-11-21 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same
US11865391B2 (en) 2020-12-15 2024-01-09 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same
US11865392B2 (en) 2020-12-15 2024-01-09 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same
US11883703B2 (en) 2020-12-15 2024-01-30 Frs Group, Llc Long-term fire retardant with magnesium sulfate and corrosion inhibitors and methods for making and using same
US12214236B2 (en) 2020-12-15 2025-02-04 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same
US12214237B2 (en) 2020-12-15 2025-02-04 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same
US11975231B2 (en) 2022-03-31 2024-05-07 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same
US12053658B2 (en) 2022-03-31 2024-08-06 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same
US12109446B2 (en) 2022-03-31 2024-10-08 Frs Group, Llc Long-term fire retardant with corrosion inhibitors and methods for making and using same

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