JP7085756B2 - Fire extinguishing method - Google Patents

Fire extinguishing method Download PDF

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JP7085756B2
JP7085756B2 JP2018558884A JP2018558884A JP7085756B2 JP 7085756 B2 JP7085756 B2 JP 7085756B2 JP 2018558884 A JP2018558884 A JP 2018558884A JP 2018558884 A JP2018558884 A JP 2018558884A JP 7085756 B2 JP7085756 B2 JP 7085756B2
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potassium
nitrate
fire extinguishing
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flame
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JPWO2018123311A1 (en
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昭光 吉川
昇吾 富山
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Yamato Protec Corp
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
    • 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

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Description

本発明は、消火作用を有する水溶液を高圧状態で噴霧ノズルから噴霧放射して消火する消火方法に関する。 The present invention relates to a fire extinguishing method for extinguishing a fire by spraying and radiating an aqueous solution having a fire extinguishing action from a spray nozzle in a high pressure state.

消防法上の火災は、木材や紙等の火災（Ａ火災）、油火災（Ｂ火災）及び電気火災（Ｃ火災）に分類されており、市販されている消火剤としては、水系消火剤（例えば水、炭酸カリウムを主成分とする強化液消火剤）、泡系消火剤（例えばライトウォーター）、ガス系消火剤（例えばハロン消火剤、二酸化炭素消火剤）及び粉末系消火剤（例えば第一リン酸アンモニウム、硫酸アンモニウム、重炭酸ナトリウム、重炭酸カリウム、重炭酸カリウムと尿素との化合物）等があり、火災の種類に応じて適当な消火剤が使用されている。 Fires under the Fire Fire Law are classified into fires of wood and paper (A fire), oil fires (B fires) and electric fires (C fires). For example, water, a fortified liquid fire extinguisher containing potassium carbonate as a main component), a foam fire extinguisher (for example, light water), a gas fire extinguisher (for example, a halon fire extinguisher, a carbon dioxide fire extinguisher) and a powder fire extinguisher (for example, first). There are ammonium phosphate, ammonium sulfate, sodium bicarbonate, potassium bicarbonate, a compound of potassium bicarbonate and urea), and an appropriate fire extinguisher is used according to the type of fire.

ここで、本来、水は消火対象としてＡ火災に対してしか消火効力がないと考えられていたが、使用方法によっては、Ｂ火災の消火も可能であるという技術が考えられている。そのような水による消火技術の一例として、例えば特許文献１（国際公開第ＷＯ９２／２０４５３号パンフレット）に記載のものがあり、局所放出方式及び全域放出方式がある。 Here, it was originally thought that water has a fire extinguishing effect only for the A fire as a fire extinguishing target, but a technique is considered in which the B fire can be extinguished depending on the method of use. As an example of such a fire extinguishing technique using water, for example, there is one described in Patent Document 1 (Pamphlet of International Publication No. WO 92/20453), and there are a local release method and a whole area release method.

局所放出方式では、図２（ａ）に示すように、水を加圧して高圧状態とし、その高圧水をスプレーヘッド１から火炎２に向けて直接噴霧して消火を行い、全域放出方式では、図２（ｂ）に示すように、密閉空間Ａ内の火災に対して直接噴霧するのではなく、間接的に放射を行って、その噴霧粒子が微細であるために、放射されてから地上に落下するまでの滞留時間が長く、空間全域に噴霧液を充満させて消火を行われる。 In the local emission method, as shown in FIG. 2A, water is pressurized to a high pressure state, and the high pressure water is directly sprayed from the spray head 1 toward the flame 2 to extinguish the fire. As shown in FIG. 2 (b), instead of directly spraying the fire in the enclosed space A, it radiates indirectly, and since the spray particles are fine, it is radiated and then on the ground. The residence time until it falls is long, and the entire space is filled with the spray liquid to extinguish the fire.

上記のような消火方法によれば、噴霧された水の霧が火炎を覆うことにより、気相の冷却、霧の気化による酸素濃度の希釈及び燃焼面の濡れ化によって、Ａ火災だけでなく、Ｂ火災も消火することが可能であるが、水のみを使用していることから、火炎の面積が大きくなると、確実に消火することができないため、本出願人は、特許文献２（特開平７－１７１２２８号公報）において、消火剤として水のみを使用した消火方法に代替して、Ａ火災だけでなく、Ｂ火災及びＣ火災も確実に消火できる消火方法を提案した。 According to the above-mentioned fire extinguishing method, the sprayed water mist covers the flame, so that the gas phase is cooled, the oxygen concentration is diluted by the vaporization of the mist, and the combustion surface is wetted. Although it is possible to extinguish a B fire, since only water is used, it is not possible to extinguish the fire reliably when the area of the flame becomes large. -171228 (Ab.), Instead of a fire extinguishing method using only water as a fire extinguishing agent, a fire extinguishing method capable of reliably extinguishing not only A fire but also B fire and C fire was proposed.

より具体的には、上記特許文献２においては、負触媒効果による消火作用を有する消火薬剤を溶解した水溶液を高圧状態でスプレーヘッドから噴霧放射することを特徴とする消火方法を提案している。 More specifically, Patent Document 2 proposes a fire extinguishing method characterized by spraying and radiating an aqueous solution in which a fire extinguishing agent having a fire extinguishing action due to a negative catalytic effect is dissolved from a spray head in a high pressure state.

国際公開第ＷＯ９２／２０４５３号パンフレットInternational Publication No. WO 92/20453 Pamphlet 特開平７－１７１２２８号公報Japanese Unexamined Patent Publication No. 7-171228

上記特許文献２の消火方法では、噴霧された霧（ミスト）状の消火剤中の水分が火炎の熱エネルギーで蒸散することで、冷却作用及び酸素遮蔽作用が発現し、更に、逐次的に析出した消火剤の結晶粒子が、火炎の吸熱分解により負触媒作用を示すアンモニアやカリウム等を発生させて化学消火反応を進行させる、とされているが、必ずしも十分に吸熱分解するとは限らず、消火力の観点から未だ改善の余地があった。 In the fire extinguishing method of Patent Document 2, the water in the sprayed mist-like fire extinguishing agent evaporates with the heat energy of the flame, so that a cooling action and an oxygen shielding action are exhibited, and further, precipitation is performed sequentially. It is said that the crystal particles of the extinguishing agent generate negative catalytic action such as ammonia and potassium by the endothermic decomposition of the flame to promote the chemical fire extinguishing reaction, but the endothermic decomposition does not always occur sufficiently and the fire is extinguished. There was still room for improvement in terms of power.

そこで、本発明の目的は、火炎の熱エネルギーが小さく吸熱が不十分であってもより確実に消火作用を発現する消火方法を提供することにある。 Therefore, an object of the present invention is to provide a fire extinguishing method that more reliably exhibits a fire extinguishing action even if the heat energy of the flame is small and the endothermic is insufficient.

上記の問題点を解決すべく、本発明者らが鋭意実験を繰り返して検討した結果、火炎の熱エネルギーが小さく吸熱が不十分であってもより確実に消火作用を発現する消火方法を実現するためには、更に、消火剤を酸化分解させる添加物が有効であることを見出し、本発明を完成するに至った。 As a result of repeated diligent experiments by the present inventors in order to solve the above problems, a fire extinguishing method that more reliably exhibits a fire extinguishing action even if the heat energy of the flame is small and the heat absorption is insufficient is realized. Further, they have found that an additive that oxidatively decomposes a fire extinguishing agent is effective, and have completed the present invention.

即ち、本発明は、水溶性成分として少なくとも１種の消炎化合物と少なくとも１種の硝酸塩とを含む消火用水溶液を、高圧状態で、噴霧ノズルから噴霧放射することを特徴とする消火方法、を提供する。 That is, the present invention provides a fire extinguishing method characterized in that a fire extinguishing aqueous solution containing at least one flame-extinguishing compound and at least one nitrate as a water-soluble component is spray-radiated from a spray nozzle in a high-pressure state. do.

かかる本発明の消火方法においては、前記消炎化合物が、クエン酸三カリウム、酢酸カリウム、重炭酸カリウム、酒石酸カリウム、グルコン酸カリウム、乳酸カリウム、エチレンジアミン四酢酸カリウム、フタル酸水素カリウム、シュウ酸カリウム、プロピオン酸カリウム、アロフォン酸カリウム、炭酸カリウム、クエン酸三ナトリウム、重炭酸ナトリウム、第一リン酸アンモニウム、第二リン酸アンモニウム又は硫酸アンモニウムであること、が好ましい。 In the fire extinguishing method of the present invention, the anti-inflammatory compound is tripotassium citrate, potassium acetate, potassium bicarbonate, potassium tartrate, potassium gluconate, potassium lactate, potassium ethylenediamine tetraacetate, potassium hydrogen phthalate, potassium oxalate, and the like. It is preferably potassium propionate, potassium allofonate, potassium carbonate, trisodium citrate, sodium bicarbonate, ammonium monophosphate, ammonium dibasic or ammonium sulfate.

また、前記硝酸塩は、硝酸アンモニウム、硝酸ナトリウム、硝酸カリウム、硝酸セシウム、硝酸マグネシウム、硝酸カルシウム、硝酸ストロンチウム又は硝酸グアニジンであること、が好ましい。 The nitrate is preferably ammonium nitrate, sodium nitrate, potassium nitrate, cesium nitrate, magnesium nitrate, calcium nitrate, strontium nitrate or guanidine nitrate.

また、前記消火用水溶液における前記消炎化合物及び前記硝酸塩の合計含有量が１～８５質量％であること、更には、５～６０質量％であること、が好ましい。 Further, it is preferable that the total content of the flame-extinguishing compound and the nitrate in the aqueous solution for fire extinguishing is 1 to 85% by mass, more preferably 5 to 60% by mass.

上記のような構成の本発明の消火方法においては、噴霧する水溶液として、消火作用を有する消火剤である消炎化合物だけでなく、当該消炎化合物を酸化分解させることが可能な硝酸塩を更に含む混合水溶液を用いる。これにより、水分蒸散後の混合水溶液は、火炎からの最小着火エネルギーレベルで一気に燃焼に近い極めて早い熱分解反応を生じ、一気に消火作用を示す化学種を微粒拡散し、より速やかで効率的な化学消火を確実に実現することができる。 In the fire extinguishing method of the present invention having the above configuration, a mixed aqueous solution further containing not only a flame extinguishing compound which is a fire extinguishing agent having a fire extinguishing action but also a nitrate capable of oxidatively decomposing the flame extinguishing compound as an aqueous solution to be sprayed. Is used. As a result, the mixed aqueous solution after water evaporation causes an extremely fast pyrolysis reaction that is close to combustion at once at the minimum ignition energy level from the flame, and the chemical species that exhibit fire extinguishing action are diffused in fine particles at once, resulting in faster and more efficient chemistry. Fire extinguishing can be surely realized.

本発明の消火方法の一実施形態を説明するための概略模式図である。It is a schematic schematic diagram for demonstrating one Embodiment of the fire extinguishing method of this invention. 局所放出方式の消火方法を説明するための概略模式図（ａ）と、全域放出方式の消火方法を説明するための概略模式図（ｂ）である。It is a schematic schematic diagram (a) for explaining the fire extinguishing method of a local emission system, and the schematic schematic diagram (b) for explaining a fire extinguishing method of a whole area emission system. 消火装置に使用されるスプレーヘッドの一例の概略縦断面図である。It is a schematic vertical sectional view of an example of a spray head used for a fire extinguishing apparatus. 図３に示すスプレーヘッドの概略正面図である。It is a schematic front view of the spray head shown in FIG.

以下、本発明の消火方法の一実施形態について、図面を参照しつつ詳細に説明する。なお、各実施形態において重複する説明は省略することがあり、本発明はこれら図面に限定されるものではなく、また、図面は、本発明を概念的に説明するためのものであるから、理解容易のために、必要に応じて寸法、比又は数を誇張又は簡略化して表している場合もある。 Hereinafter, an embodiment of the fire extinguishing method of the present invention will be described in detail with reference to the drawings. It should be noted that duplicate explanations may be omitted in each embodiment, and the present invention is not limited to these drawings, and the drawings are for conceptually explaining the present invention. For convenience, dimensions, ratios or numbers may be exaggerated or simplified as needed.

図１は、本発明の消火方法の一実施形態を説明するための消火装置の概略模式図である。図１に示す消火装置においては、消火作用を有する消火薬剤である消炎化合物と、当該消火薬剤の酸化分解可能な硝酸塩と、を溶解した水溶液（以下、「消火用水溶液」ともいう。）を充填した開閉バルブ１５ａ付き高圧容器１５を有し、該高圧容器１５とスプレーヘッド１とを配管１６を介して連通連結されている。 FIG. 1 is a schematic schematic diagram of a fire extinguishing device for explaining an embodiment of the fire extinguishing method of the present invention. In the fire extinguishing device shown in FIG. 1, an aqueous solution (hereinafter, also referred to as "fire extinguishing aqueous solution") in which a flame extinguishing compound which is a fire extinguishing agent having a fire extinguishing action and a nitrate capable of oxidative decomposition of the fire extinguishing agent are dissolved is filled. It has a high-pressure container 15 with an on-off valve 15a, and the high-pressure container 15 and the spray head 1 are communicated and connected via a pipe 16.

高圧容器１５には、消火用水溶液と、窒素ガスと、二酸化炭素等の圧縮ガスとが充填され、消火用水溶液が１平方センチメートル当たり少なくとも１０ｋｇ以上、好ましくは１００ｋｇ以上の高圧で加圧されている。なお、高圧容器１５を用いず、圧縮ポンプ等により消火薬剤を溶解した水溶液を加圧して高圧状態にしてもよい。 The high-pressure container 15 is filled with a fire-extinguishing aqueous solution, nitrogen gas, and a compressed gas such as carbon dioxide, and the fire-extinguishing aqueous solution is pressurized at a high pressure of at least 10 kg or more, preferably 100 kg or more per square centimeter. Instead of using the high-pressure container 15, an aqueous solution in which a fire extinguishing agent is dissolved may be pressurized by a compression pump or the like to bring it into a high-pressure state.

ここで、スプレーヘッド１としては、従来公知のものを使用すればよく、例えば図３及び図４に示すものが用いられ、例えば天井に火災の発生が予期される方向へ指向して配置された各噴霧ノズル４から粒子径が２０～２００μｍの霧１４が火炎２に向けて噴霧放射される。 Here, as the spray head 1, conventionally known ones may be used, for example, those shown in FIGS. 3 and 4, for example, arranged on the ceiling in a direction in which a fire is expected to occur. A mist 14 having a particle diameter of 20 to 200 μm is spray-radiated from each spray nozzle 4 toward the flame 2.

上記の消火用水溶液に含まれる消炎化合物は、無機化合物でも有機化合物でもよく、好ましいものは、例えば、クエン酸三カリウム、酢酸カリウム、重炭酸カリウム、酒石酸カリウム、グルコン酸カリウム、乳酸カリウム、エチレンジアミン四酢酸カリウム、フタル酸水素カリウム、シュウ酸カリウム、プロピオン酸カリウム、アロフォン酸カリウム、炭酸カリウム、クエン酸三ナトリウム、重炭酸ナトリウム、第一リン酸アンモニウム、第二リン酸アンモニウム及び硫酸アンモニウムのうちの少なくとも１種である。これらの消炎化合物が好ましい理由は、水に溶解し易く、また消炎化合物中のカリウム、ナトリウム、アンモニウムが火炎により容易に消炎化合物より放出され、燃焼反応を促進する化学種と結合することで消炎効果を発揮できるからである。 The flame-extinguishing compound contained in the above-mentioned fire extinguishing aqueous solution may be an inorganic compound or an organic compound, and preferred ones are, for example, tripotassium citrate, potassium acetate, potassium bicarbonate, potassium tartrate, potassium gluconate, potassium lactate, and ethylenediamine tetra. At least one of potassium acetate, potassium hydrogen phthalate, potassium oxalate, potassium propionate, potassium allofonate, potassium carbonate, trisodium citrate, sodium bicarbonate, ammonium monophosphate, ammonium dibasic and ammonium sulfate. It is a seed. The reason why these anti-inflammatory compounds are preferable is that they are easily dissolved in water, and potassium, sodium, and ammonium in the anti-inflammatory compound are easily released from the anti-inflammatory compound by a flame, and the flame-extinguishing effect is achieved by combining with a chemical species that promotes a combustion reaction. This is because it can exert.

また、上記の消火用水溶液に含まれる硝酸塩は、硝酸アンモニウム、硝酸ナトリウム、硝酸カリウム、硝酸セシウム、硝酸マグネシウム、硝酸カルシウム、硝酸ストロンチウム及び硝酸グアニジンのうちの少なくとも１種である。これらの硝酸塩が好ましい理由は、水に溶け易く、上記の化合物との組合せで硝酸イオン由来の酸素による酸化分解反応を促進し、消火成分を放出する機能を有するからである。 The nitrate contained in the above-mentioned fire extinguishing aqueous solution is at least one of ammonium nitrate, sodium nitrate, potassium nitrate, cesium nitrate, magnesium nitrate, calcium nitrate, strontium nitrate and guanidine nitrate. The reason why these nitrates are preferable is that they are easily dissolved in water and have a function of promoting an oxidative decomposition reaction by oxygen derived from nitrate ion in combination with the above compound and releasing a fire extinguishing component.

消火用水溶液における前記消炎化合物及び前記硝酸塩の合計含有量が１～８５質量％であること、更には、１～６０質量％であること、が好ましい。また、消火用水溶液における前記消炎化合物及び前記硝酸塩の質量比は、消炎化合物が４５～９９に対し、硝酸塩が５５～１（合計１００）であればよい。より好ましくは、消炎化合物が５０～９５に対し、硝酸塩が５０～５（合計１００）であればよい。 It is preferable that the total content of the flame-extinguishing compound and the nitrate in the aqueous solution for fire extinguishing is 1 to 85% by mass, more preferably 1 to 60% by mass. The mass ratio of the flame-extinguishing compound and the nitrate in the aqueous solution for fire extinguishing may be 45 to 99 for the flame-extinguishing compound and 55 to 1 (total 100) for the nitrate. More preferably, the amount of the anti-inflammatory compound may be 50 to 95, and the amount of nitrate may be 50 to 5 (100 in total).

本発明の消火方法においては、スプレーヘッド１から噴霧放射される上記消火用水溶液の霧（ミスト）１４の粒子径が２０～２００μｍのときに消火作用を効果的に発揮する。粒子径が２００μｍ以下であれば、燃焼熱により粒子中の水分がより確実に蒸発し、残された消火剤成分である消炎化合物が粉末化し、更に、熱せられて吸熱分解を起こすことで消火作用を発揮する、また、粒子径が２０μｍ以上であれば、含有水分の蒸発が確実に行われ、消火薬成分による消火効果が最大限に引き出される。上記消火用水溶液の霧（ミスト）１４の粒子径は、より好ましくは、３０～１００μｍであるのが好ましい。 In the fire extinguishing method of the present invention, the fire extinguishing action is effectively exhibited when the particle size of the mist 14 of the fire extinguishing aqueous solution sprayed and radiated from the spray head 1 is 20 to 200 μm. When the particle size is 200 μm or less, the moisture in the particles evaporates more reliably due to the heat of combustion, the remaining flame-extinguishing compound, which is a component of the fire extinguishing agent, is powdered, and further heated to cause heat absorption decomposition, thereby extinguishing the fire. If the particle size is 20 μm or more, the contained water is surely evaporated, and the fire extinguishing effect of the fire extinguishing agent component is maximized. The particle size of the mist 14 of the fire extinguishing aqueous solution is more preferably 30 to 100 μm.

上記のような構成を有する消火装置を用い、火災が発生した場合には、その検知信号又は手動で開閉バルブ１５ａを開放する。これによって、負触媒効果による消火作用を有する消火薬剤を溶解した水溶液が高圧状態でスプレーヘッド１の各噴霧ノズル４から霧１４となって火炎２に向けて噴霧放射される。 When a fire breaks out using a fire extinguishing device having the above configuration, the detection signal or the manual opening / closing valve 15a is opened. As a result, the aqueous solution in which the fire extinguishing agent having a fire extinguishing effect due to the negative catalytic effect is dissolved becomes mist 14 from each spray nozzle 4 of the spray head 1 in a high pressure state and is spray-radiated toward the flame 2.

このとき、火炎２を霧１４で覆うことにより、先ず燃焼熱により霧１４の水分が気化蒸発し、次に、消火用水溶液の霧１４が熱分解して残った火炎２を消火する。即ち、消火原理は、（１）気相の冷却、（２）噴霧液の気化による酸素濃度の希釈、（３）燃焼面の濡れ化、（４）消火剤成分の消火作用と、硝酸塩による消火剤成分の酸化分解作用と、による化学的消火であって、Ａ火災だけでなく、Ｂ火災及びＣ火災であっても、しかも、その火炎の面積が広い場合でも、確実に消火することができる。 At this time, by covering the flame 2 with the mist 14, the water content of the mist 14 is first vaporized and evaporated by the heat of combustion, and then the mist 14 of the fire extinguishing aqueous solution is thermally decomposed to extinguish the remaining flame 2. That is, the fire extinguishing principle is (1) cooling the gas phase, (2) diluting the oxygen concentration by vaporizing the spray liquid, (3) wetting the combustion surface, (4) extinguishing the fire extinguishing agent component, and extinguishing the fire with nitrate. It is a chemical fire extinguishing due to the oxidative decomposition action of the agent component, and it is possible to surely extinguish the fire not only in A fire but also in B fire and C fire, and even when the area of the flame is large. ..

≪実施例１～１０≫
図１に示す消火装置を用い、深さが３０ｃｍで、その面積が４５×４５、６３×６３、７７×７７及び８９×８９ｃｍの各種の燃焼火皿１８に敷水１９を深さ１５ｃｍ溜め、その敷水１９上にノルマルヘプタン２０を深さ３ｃｍ入れ、スプレーヘッド１と燃焼火皿１８との間の間隔Ｈを１．５ｍとした。消火対象空間は５リットルとした。
また、表１に示す組成の成分を水に溶解させて２０％の消火用水溶液を調製し、高圧容器１５にこれを充填するとともに、窒素ガスを充填して、初期圧力が１平方センチメートル当たり１００ｋｇになるように加圧した。この状態で、ノルマルヘプタン２０に着火し、予備燃焼を１分間行った後、開閉バルブ１５ａを開放し、スプレーヘッド１から粒子径が２０～２００μｍの消火用水溶液の霧１４を噴霧放射し、その霧１４で火炎２を覆った。このような手順で消火方法を実施し、消火の成否を確認した。結果を表１に示した。<< Examples 1 to 10 >>
Using the fire extinguishing device shown in FIG. 1, a depth of 15 cm was stored in various combustion pans 18 having a depth of 30 cm and an area of 45 × 45, 63 × 63, 77 × 77 and 89 × 89 cm. Normal heptane 20 was placed on the bed water 19 to a depth of 3 cm, and the distance H between the spray head 1 and the combustion pan 18 was set to 1.5 m. The fire extinguishing space was set to 5 liters.
Further, the components having the composition shown in Table 1 are dissolved in water to prepare a 20% fire extinguishing aqueous solution, which is filled in the high pressure container 15 and also filled with nitrogen gas, so that the initial pressure becomes 100 kg per square centimeter. Pressurized to be. In this state, the normal heptane 20 is ignited, pre-combustion is performed for 1 minute, then the on-off valve 15a is opened, and the mist 14 of the fire extinguishing aqueous solution having a particle size of 20 to 200 μm is spray-radiated from the spray head 1 and the mist 14 thereof is spray-radiated. The fog 14 covered the flame 2. The fire extinguishing method was carried out by such a procedure, and the success or failure of the fire extinguishing was confirmed. The results are shown in Table 1.

≪比較例１≫
硝酸塩を用いない以外は、実施例１と同様にして、消火方法を実施して消火の可否を確認した。結果を表１に示した。<< Comparative Example 1 >>
A fire extinguishing method was carried out in the same manner as in Example 1 except that nitrate was not used, and whether or not the fire could be extinguished was confirmed. The results are shown in Table 1.

≪比較例２≫
水のみを用いた以外は、実施例１と同様にして、消火方法を実施して消火の可否を確認した。結果を表１に示した。<< Comparative Example 2 >>
Except for using only water, a fire extinguishing method was carried out in the same manner as in Example 1 to confirm whether or not the fire could be extinguished. The results are shown in Table 1.

Figure 0007085756000001
Figure 0007085756000001

消火試験の結果は、表１に示すとおりであり、硝酸塩を用いない場合（比較例１）は、ほとんど消火できたが最後に小さな炎が残った。また、水だけを用いた場合（比較例２）は、ほとんど消火できなかった。これに対し、本発明の消火方法においては確実に消火することができた。
なお、消炎化合物を用いない場合を比較例３としたが、消火できなかった。The results of the fire extinguishing test are as shown in Table 1. When nitrate was not used (Comparative Example 1), the fire was almost extinguished, but a small flame remained at the end. Moreover, when only water was used (Comparative Example 2), the fire could hardly be extinguished. On the other hand, in the fire extinguishing method of the present invention, the fire could be extinguished reliably.
In addition, the case where the flame-extinguishing compound was not used was set as Comparative Example 3, but the fire could not be extinguished.

１・・・スプレーヘッド、
２・・・火炎、
１５・・・高圧容器、
１８・・・燃焼火皿、
１９・・・敷水、
２０・・・ノルマルヘプタン。1 ... Spray head,
2 ... flame,
15 ... High pressure container,
18 ... Combustion pan,
19 ... Shikimizu,
20 ... Normal heptane.

Claims (2)

水溶性成分として消炎化合物と硝酸塩とを含む消火用水溶液を、高圧状態で、噴霧ノズルから粒子径２０～２００μｍのミストとして噴霧放射する消火方法であって、
前記消炎化合物が、クエン酸三カリウム、酢酸カリウム、重炭酸カリウム、酒石酸カリウム、グルコン酸カリウム、乳酸カリウム、エチレンジアミン四酢酸カリウム、フタル酸水素カリウム、シュウ酸カリウム、プロピオン酸カリウム、アロフォン酸カリウム、炭酸カリウム、クエン酸三ナトリウム、重炭酸ナトリウム、第一リン酸アンモニウム、第二リン酸アンモニウム又は硫酸アンモニウムであり、
前記消火用水溶液における前記消炎化合物及び前記硝酸塩の合計含有量が１～８５質量％であることを特徴とする消火方法。 A fire extinguishing method in which a fire extinguishing aqueous solution containing a flame- extinguishing compound and a nitrate as water-soluble components is sprayed and radiated from a spray nozzle as a mist having a particle diameter of 20 to 200 μm under a high pressure state.
The anti-inflammatory compound is tripotassium citrate, potassium acetate, potassium bicarbonate, potassium tartrate, potassium gluconate, potassium lactate, potassium ethylenediamine tetraacetate, potassium hydrogen phthalate, potassium oxalate, potassium propionate, potassium allofonate, carbonic acid. Potassium, trisodium citrate, sodium bicarbonate, ammonium primary phosphate, ammonium secondary phosphate or ammonium sulfate,
A fire extinguishing method characterized in that the total content of the flame-extinguishing compound and the nitrate in the aqueous solution for fire extinguishing is 1 to 85% by mass . 前記硝酸塩が、硝酸アンモニウム、硝酸ナトリウム、硝酸カリウム、硝酸セシウム、硝酸マグネシウム、硝酸カルシウム、硝酸ストロンチウム又は硝酸グアニジンであること、を特徴とする請求項１に記載の消火方法。 The fire extinguishing method according to claim 1, wherein the nitrate is ammonium nitrate, sodium nitrate, potassium nitrate, cesium nitrate, magnesium nitrate, calcium nitrate, strontium nitrate or guanidine nitrate .
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