JP4012184B2 - Hand-throwing ignition suppression foam - Google Patents

Description

  The present invention relates to a hand-throwing ignition suppression bubble bullet. Specifically, the present invention provides a temporary and temporary suppression of the generation of flammable vapor from the surface of flammable liquid that has been sprinkled on an indoor floor or the like for some reason, thereby igniting the flammable vapor. Further, the present invention relates to a hand-throwing ignition suppression foam that can suppress explosion.

  When a flammable liquid such as gasoline is applied to an indoor floor or the like by deliberate or negligence, flammable vapor is generated from the surface of the flammable liquid, and there is a risk of ignition and explosion of the flammable vapor. As a result, the lives of the people left indoors are at risk, and the life-saving activities of those lives are seriously hindered. In order to solve this problem, it is desirable to suppress the generation of flammable vapor from the surface of the flammable liquid quickly and temporarily, especially only for the time required to ensure the safety of human life. No means for responding to the situation has been known so far, and at present, only emergency deployment is required to deal with it after the fact.

  In addition, as a method for treating leaked oil such as gasoline, for example, JP-A-2003-183635 discloses that oil-digested bacteria and emulsifiers are sprayed on leaked oil, and water is further applied to disperse and emulsify the leaked oil. Leaked oil in which a porous substance and supplemental nutrients such as phosphorus and nitrogen are sprayed on the emulsion and stirred to form a clay, thereby suppressing flammability and providing for biodegradation by the oil-digesting bacteria The processing method is disclosed. However, since this processing method is composed of a number of steps, as described above, in the event of an emergency where the flammable liquid is sprinkled on an indoor floor or the like, combustible vapor from the surface of the flammable liquid. It is impossible to respond to the purpose of suppressing the occurrence of urgently and temporarily and suppressing the ignition and explosion of the combustible vapor.

On the other hand, JP-A-8-257157, JP-A-9-253231, and the like disclose hand-throwing type fire extinguishing liquid bullets in which a fire-extinguishing liquid agent is sealed in an impact-damaging hand-throwing container. However, such a fire extinguishing liquid bullet is thrown toward the source of the fire in the event of a fire, damages the container by the impact at the time of landing, and extinguishes the fire flame quickly with the fire extinguishing liquid flowing out of the damaged container. Yes, even if effective for initial fire extinguishing in the event of a fire, the generation of flammable vapor from the surface of flammable liquid that has been sprinkled on the floor of the room, etc., as described above, is temporarily and temporarily suppressed The purpose is not to suppress ignition and explosion of the combustible vapor.
JP 2003-183635 A JP-A-8-257157 JP-A-9-253231

  The object of the present invention is to throw the flammable liquid on an indoor floor or the like by deliberate or negligence and damage the container by impact at the time of landing. Generation of flammable vapor from the surface of the flammable liquid is suppressed in a temporary and temporary manner, preferably only by the time required to ensure the safety of human life, and at the same time suppresses ignition and explosion of the flammable vapor To provide bubble bullets.

The hand-throwing-type ignition suppression foam bullet according to the invention of claim 1 leaves a foaming space of 1/3 or more of its total volume in an impact-damaging hand-throwing container having a volume of 200 to 2000 ml , A foamable fluorosurfactant aqueous solution containing 0.009 to 1.5 % by weight of a fluorosurfactant is enclosed.

  The hand-throwing type ignition suppression bubble bullet according to the invention of claim 2 is the hand-throwing type ignition suppression bubble bullet according to claim 1, wherein the foamable fluorosurfactant aqueous solution is combined with the fluorosurfactant to other interfaces. It contains an activator.

The hand-throwing type ignition suppression foam bullet according to the invention described in claim 3 is the hand-throwing type ignition suppression foam bullet according to claim 1 or 2 , wherein the destructive solid substance is placed in the hand-throwing container and the foamable fluorine-based interface. Encapsulated with an aqueous activator solution .

According to the first aspect of the present invention, the ignition that is thrown toward the flammable liquid that has been deliberately or negligently struck on the floor of the room, damages the container by impact at the time of landing, and flows out from the damaged container. Hand throwing that can suppress the generation of flammable vapor from the surface of the flammable liquid as a matter of time, temporarily and only for the time required to ensure the safety of human life, and to suppress ignition and explosion of the flammable vapor. A type ignition suppression foam bullet can be provided .

In the present invention, the concentration of the fluorosurfactant in the foamable fluorosurfactant aqueous solution is in the range of 0.009 to 1.5% by weight, thereby exhibiting the required ignition suppression effect and economically. Even an excellent hand-throwing ignition suppression foam can be provided.

In the present invention, the volume of the hand throwing container is in the range of 200 to 2000 ml, so that the flammable liquid is brought into the room in a plastic container having a capacity of 1000 to 2000 ml which is frequently used as a beverage container. Encapsulate an amount of a foamable fluorosurfactant aqueous solution that can suppress ignition against an amount of flammable liquid that can enter these containers when it is assumed that the floor has been deliberately sprinkled on the floor. In addition, it is possible to secure a weight capable of being thrown by hand in a state where the foamable fluorosurfactant aqueous solution is sealed.

Furthermore, in the present invention, a volume of 1/3 or more of the total volume of the hand throwing container is secured as the foaming space, so that the foamable fluorosurfactant aqueous solution is sufficiently stored in the hand throwing container in advance during hand throwing. By foaming, the ignition suppression foam can be quickly discharged when the hand throwing container is damaged in impact.

According to the invention described in claim 2 , in the invention described in claim 1, it is possible to assist the intended action of the fluorosurfactant with another surfactant .

Further, according to the invention described in claim 3 , in the invention described in claim 1 or 2 , even when the landing point is made of an elastic material or the throwing force is too weak, the action of the solid material for destruction As a result, it is possible to promote impact damage when the hand throwing container is landed .

When throwing the hand-throwing type ignition suppression bubble bullet having the above-described configuration toward a flammable liquid that has been sprinkled on the floor or the like of the room by deliberate or negligence, preferably after some shaking, the ignition suppression bubble bullet is The foaming fluorosurfactant aqueous solution in the hand throwing container is landed on or near the flammable liquid while foaming in the foaming space by the throwing operation itself or further added shaking operation, etc. At the same time, the hand throwing container is broken by the impact of the above, and at the same time, the foamable fluorosurfactant aqueous solution is further foamed from the damaged hand throwing container, and water film forming foam having excellent fluidity is generated and flows out. The water film foam that has flowed out of the hand throwing container damaged as described above acts as an ignition suppression foam, and the surface of the flammable liquid is covered all over at once by the aqueous film and the aqueous foam, thereby the flammable liquid. Generation of flammable vapor from the surface is suppressed promptly and temporarily, preferably at least for the time required to ensure the safety of human life, and as a rule of thumb, it is suppressed for at least 3 minutes, preferably 10 minutes or more .

The foamable fluorosurfactant aqueous solution is particularly 0.009 to 1 in order to produce the water film formation foam excellent in fluidity that covers the surface of the flammable liquid at once as described above, and to exert an ignition suppression action. It is necessary to contain 5% by weight of a fluorosurfactant. When the concentration of the fluorosurfactant is less than 0.009% by weight, the ignition suppression time is too short and the required ignition suppression action cannot be obtained. When the amount exceeds 1.5% by weight, almost no improvement in the effect of suppressing ignition with respect to the increase in concentration is observed, and the disadvantage is increased in terms of cost effectiveness .

  The foamable fluorosurfactant aqueous solution has a surfactant other than the fluorosurfactant, an antifreezing agent, a dye, and the like as long as it does not inhibit the action of the fluorosurfactant. You may mix | blend an additive.

  The hand-throwing container has chemical resistance with respect to the foamable fluorosurfactant aqueous solution, and is not easily damaged by normal handling, but it is easily damaged by impact at the time of landing by hand-throwing, preferably at once. In addition, the size, material, shape, thickness of each part, strength of each part, etc. are appropriately selected so that they can be thrown by hand easily.

Practically, for example, as a relatively high possibility of occurrence, a flammable liquid such as gasoline is brought into the room in a plastic container having a volume of 1000 to 2000 ml, which is often used as a beverage container, and the floor Assuming a situation where the oil is deliberately sprinkled, etc., it is possible to enclose an amount of an aqueous foamable fluorosurfactant solution that can suppress ignition against an amount of flammable liquid that can enter these containers, and so as to ensure the weight that can be thrown hand while encapsulating foamable fluorochemical surfactant aqueous solution, as a container for throwing hand, 200～2000Ml, preferably to have a volume of 500~1500ml .

In the hand throwing container, at least one third of its total volume, preferably so that the foamable fluorosurfactant aqueous solution can be sufficiently foamed in advance in the hand throwing container as described above. encapsulating foaming fluorosurfactant solution leaving half more blowing space.

  In addition, the hand throwing container has a shape with a grip portion suitable for hand throwing, typically a flask shape such as an Erlenmeyer flask or a flat bottom flask, for easy and reliable hand throwing. It is preferable to select containers made of various plastic materials such as polyester resin, polystyrene resin, polypropylene resin, etc. so that they can be easily molded into shapes, structures and strengths and are less likely to cause dangerous debris when broken. .

  In the hand-throwing type ignition suppression foam bullet according to the present invention, as described above, it is necessary for the hand-throwing container to be surely damaged by the impact at the time of landing by hand throwing, but the landing point is not a hard floor etc. If it is made of an elastic material such as a carpet or sofa, or if the throwing force is too weak, the impact at the time of landing will be small, and the thrown hand throwing container may not be sufficiently damaged at the time of landing. In order to solve the above-mentioned problem, for example, the breaking solid may be enclosed with the foamable fluorosurfactant aqueous solution in the hand throwing container. In this case, the breaking solid is generated at the time of landing. The inside of the hand-throwing container is moved in the direction of the inner wall by inertial force, and the impact damage at the time of landing of the hand-throwing container is promoted. As the solid material for destruction, it has chemical resistance with respect to the foamable fluorosurfactant aqueous solution and has a sphere or other arbitrary shape and an appropriate weight and size, a metal body, a ceramic body, a plastic body or their A complex or the like can be employed.

FIG. 1 is a front view showing a partial cross section of an example of a hand-throwing ignition suppression bubble bullet according to the present invention. In the figure, a hand-throwing container 1 includes a narrow neck portion 2 (outer diameter 40 mm, average wall thickness 2.5 mm) made of polystyrene resin and a large-diameter container 3 (maximum outer diameter 118 mm, average wall thickness) communicating therewith. 1.1 mm) is formed into a transparent or translucent eggplant type flat bottom flask shape (height 270 mm, volume 1200 ml), and 0.009 to 1.5 % by weight of a fluorosurfactant inside A foamable fluorosurfactant aqueous solution 4 containing slag is encapsulated leaving a foaming space 5 of ½ or more of the total volume, and further, a solid material for destruction 6 made of stainless spheres having a diameter of 15 mm is encapsulated. A hermetic plug 7 is applied to the opening.

Hereinafter, the present invention will be specifically described based on examples in comparison with comparative examples.
[Example 1]
A concentration range of 0.009 to 1.603 wt% corresponding to test numbers 1-1 to 1-15 (0.009, 0.011, 0.023, 0.034, 0.069, 0.115, 0.172, 0.229, 0.286, 0.344, 0.458, 0.687, 1.145, 1.374 and 1.603% by weight of fluorosurfactant (amphoteric type) A foamable fluorosurfactant aqueous solution containing 95.6 parts by weight and anionic 4.4 parts by weight) was prepared.

  6 ml of gasoline was poured into a petri dish having a diameter of 60 mm and a height of 17 mm under an air temperature of 28 ° C., and allowed to stand for 1 minute, and then, on the gasoline surface, 6 ml of a foaming fluorosurfactant aqueous solution according to each of the above test numbers (petri dish) The same amount as the gasoline in the inside is foamed in a test tube and injected, and after each time in the range of 1 to 30 minutes (after 1, 3, 5, 6, 8, 10, 15, 20 and 30 minutes) After each time), the ignition state is observed when a flame is brought close to the water film bubble covering the gasoline surface and when the flame is brought into contact with the gasoline liquid surface under the water film bubble. No, △: ignited for a moment but then disappears immediately, x: burned after ignition ”. In addition, for the fluorosurfactant aqueous solution according to a certain test number, when the result of the ignition test after a certain time has been evaluated as the ignition state “x”, the ignition test after the subsequent time has passed, Since it is clear that the evaluation of the ignition state of the same level or less is obtained, the implementation was omitted.

  Table 1 below shows the observation results of the ignition state by the ignition test after the elapse of each time when the foamable fluorosurfactant aqueous solutions according to the test numbers 1-1 to 1-15 are used. In Table 1, the fluorine content (% by weight) in each concentration of the foamable fluorosurfactant aqueous solution is added as reference data.

  According to the observation results described in Table 1, when an expandable fluorosurfactant aqueous solution having a concentration of 0.009% by weight is used, it exhibits an ignition suppression action for about 3 to 5 minutes, and 0.011% by weight. In the concentration of 1, the ignition suppression effect is shown for about 8 to 10 minutes. After that, the ignition suppression effect is improved as the concentration is increased. However, when the concentration exceeds 0.172 wt%, the ignition suppression is achieved up to 1.603 wt%. The effect is maintained for about 20 to 30 minutes, and no improvement in the ignition suppression effect against the increase in concentration is observed.

[Example 2]
An aqueous solution of a foamable fluorosurfactant having the same concentration range as in Example 1 corresponding to Test Nos. 2-1 to 2-15 was prepared.
The same as in Example 1 except that 3 ml of the foamable fluorosurfactant aqueous solution (half amount of gasoline in the petri dish) according to each of the above test numbers was foamed and injected onto the surface of 6 ml of gasoline injected into the petri dish. Ignition tests were performed under the conditions described above, and the ignition state was observed.

  In Table 2 below, when each foamable fluorosurfactant aqueous solution according to Test Nos. 2-1 to 2-15 is used, the ignition state by the ignition test after the elapse of each time in the same manner as Table 1 is shown. An observation result is shown.

  According to the observation results described in Table 2, when an expandable fluorosurfactant aqueous solution having a concentration of 0.009% by weight is used, it exhibits an ignition suppression action for about 1 to 3 minutes, and 0.011% by weight. In the concentration of 1, the ignition suppression action of about 3 to 5 minutes is shown, in the concentration of 0.023 wt% shows the ignition suppression action of about 8 to 10 minutes, and thereafter the ignition suppression action improves as the concentration increases, When the concentration exceeds 0.229% by weight, the ignition suppressing action is maintained for about 20 to 30 minutes until the concentration reaches 1.603% by weight, and no improvement in the ignition suppressing action with respect to the increase in concentration is observed.

[Comparative Example 1]
Concentration ranges of 0.000 to 0.008% by weight (0.000, 0.002, 0.005, 0.007 and 0.008% by weight corresponding to test numbers 3-1 to 3-5) The ignition test was carried out under the same conditions as in Example 1 except that the foamable fluorosurfactant aqueous solution (1) was used, and the ignition state was observed.

  In Table 3 below, when each foamable fluorosurfactant aqueous solution according to Test Nos. 3-1 to 3-5 is used, the ignition state by the ignition test after each time elapsed in the same manner as Table 1 An observation result is shown.

  According to the observation results shown in Table 3, when an aqueous foamable fluorosurfactant solution having a concentration of 0.000 to 0.007% by weight is used, only an ignition suppression effect of about 0 to 1 minute is exhibited. In addition, even at a concentration of 0.008% by weight, the ignition suppressing action is maintained for about 1 to 3 minutes.

[Comparative Example 2]
Concentration ranges of 0.000 to 0.008% by weight (0.000, 0.002, 0.005, 0.007 and 0.008% by weight corresponding to test numbers 4-1 to 4-5) The ignition test was carried out under the same conditions as in Example 2 except that the foamable fluorosurfactant aqueous solution was used, and the ignition state was observed.

  In the case of using each foamable fluorosurfactant aqueous solution according to Test Nos. 4-1 to 4-5 in Table 4 below, the ignition state by the ignition test after the elapse of each time in the same manner as in Table 1 An observation result is shown.

  According to the observation results shown in Table 4, the required ignition suppression action is not recognized when any concentration of the foamable fluorosurfactant aqueous solution is used.

[Comparative Example 3]
Concentration ranges of 0.0115 to 18.32 wt% (0.0115, 0.1145, 0.4580, 4.580, 9.160 and 18.32 wt% corresponding to test numbers 5-1 to 5-6. %), An ignition test was performed under the same conditions as in Example 1 except that an aqueous non-fluorinated surfactant solution containing an anionic surfactant containing no fluorine was used, and the ignition state was observed.

  In the case of using each non-fluorinated surfactant aqueous solution according to Test Nos. 5-1 to 5-6 in Table 5 below, observation of the ignition state by the ignition test after the elapse of each time in the same manner as in Table 1 Results are shown.

  According to the observation results shown in Table 5, even when each concentration of each non-fluorinated surfactant aqueous solution was used, a flame was applied to the water film-forming foam covering the gasoline surface after the lapse of 1 minute. It was ignited just by bringing it close, and then combusted, and no ignition suppression action was observed.

It is a front view shown in the partial cross section of an example of the hand-throwing type ignition suppression foam bullet concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hand throwing container 2 Neck part 3 Storage part 4 Foamable fluorosurfactant aqueous solution 5 Foaming space 6 Destruction solid matter 7 Seal plug

Claims (3)

An impact-damaging hand throwing container having a volume of 200 to 2000 ml contains 0.009 to 1.5 % by weight of a fluorosurfactant, leaving a foaming space of 1/3 or more of its total volume. A hand-throwing ignition suppression foam bullet encapsulating a foaming fluorosurfactant aqueous solution. The hand-throwing-type ignition suppression foam bullet according to claim 1, wherein the foamable fluorosurfactant aqueous solution contains another surfactant together with the fluorosurfactant. The hand-throwing type ignition suppression foam bullet according to claim 1 or 2 , wherein a destructive solid is enclosed in a hand-throwing container together with a foamable fluorosurfactant aqueous solution .

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