JP2017070509A - Throwing extinguishing bullet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire-extinguishing agent used as a throwing type extinguishing tool, being easily-handleable and inexpensively-manufacturable, while having excellent fire-extinguishing performance, also having extremely little toxicity to human/environment, and preservable for a long period.SOLUTION: There is provided a throwing extinguishing bullet 1 for performing fire fighting by throwing a container 2 filled with a fire-extinguishing agent inside. In the throwing extinguishing bullet 1, as the fire-extinguishing agent 4 filled into the container, either of aqueous solution of ferrous chloride tetrahydrate having a concentration of 0.01 mol/l to 0.1 mol/l, and aqueous solution obtained by mixing sodium lauryl sulfate which is a surfactant into the aqueous solution of ferrous chloride tetrahydrate having the concentration of 0.01 mol/l to 0.1 mol/l is used.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fire extinguisher used for a throwing-out type fire extinguishing tool that performs fire extinguishing by throwing a container filled with a fire extinguisher to a fire source when a fire occurs.

Extinguishing fires at the initial stage of combustion is important for preventing damage expansion, and fire extinguishers are a fire extinguishing tool that plays a role, but handling of fire extinguishers is generally not so easy and requires training. On the other hand, throwing fire bombs are handy and easy to hold and throw, so they can be said to be an effective technique for initial fire extinguishment in that fire extinguishing activities can be performed with a simple operation just by throwing them at the fire.

  Various fire extinguishing tools similar to this throw-out fire bomb have been commercialized, and the fire extinguishing agents used for these are comprehensively satisfying not only fire extinguishing performance but also price, long-term stability, toxicity to people and the environment, etc. It is improving as much as possible. All of these products can be said to be at the same level in terms of fire extinguishing performance, but there are a variety of long-term stability and toxicity to humans and the environment, and there is nothing that satisfies both.

In view of such a current situation, a product using a fire extinguisher that has sufficient fire extinguishing performance, is inexpensive, has excellent long-term stability, and has low toxicity to humans and the environment is desired.

JP-A-2015-123313

Koken Shibuho 63 Koshiba Keisuke & Otani Hideo "Experimental Study on Fire Extinguishing Agent for Throwing-Type Fire Extinguishing Equipment"

  As fire extinguishing agents for throwing fire extinguishers, ammonia-based, aluminum sulfate-based, potassium carbonate-based extinguishing agents are often used. These are excellent in fire extinguishing performance and chemical stability, but are not necessarily suitable as fire extinguishing agents in terms of irritating odor and toxicity.

  On the other hand, when using an aqueous solution of about 0.2 mol of ferrous chloride as a fire extinguisher, including fire extinguishing experiments, it has fire extinguishing performance, low cost, and extremely low toxicity to people and the environment However, the problem that it was not suitable for long-term stockpiling was recognized because a deposit considered to be iron oxide was deposited during storage.

  Therefore, it is considered that an aqueous solution of ferrous chloride can be a suitable fire extinguisher if the amount of deposited iron oxide during storage can be reduced.

  It is considered that the amount of iron oxide deposited during storage can be reduced by reducing the concentration of ferrous chloride aqueous solution. However, this is a premise that the fire extinguishing performance is not lowered, and it is necessary to search for a solution by repeating the fire extinguishing experiment. As a result of the fire extinguishing experiment, it was found that an iron chloride aqueous solution having a concentration range of 0.01 mol to 0.1 mol can reduce the amount of iron oxide deposited during storage while maintaining sufficient fire extinguishing performance and can be stored for a long time. .

At the same time, it was decided to implement other measures that can improve the fire-extinguishing performance and support a longer storage period.

Specifically, a surfactant is additionally mixed for improving the fire extinguishing performance.

Regarding the extension of the storage period, when 5 years have passed since the manufacture of an aqueous solution of 0.01 mol to 0.1 mol of ferrous chloride was actually evaluated, the amount of iron oxide deposited was observed in a trace amount, but the extinguishing performance was There was no deterioration. Furthermore, by providing a lid on the container, not only filling of the extinguishing agent but also replacement of the extinguishing agent can be easily performed, and by replacing the extinguishing agent, the effectiveness as a fire extinguishing bullet can be maintained over a considerably long period of time. ,it is conceivable that.

  Furthermore, by diluting the concentration of the ferrous chloride aqueous solution from 0.2 mol to 0.01 mol to 0.1 mol, it is possible to contribute to reduction in production cost and further reduction in toxicity to humans and the environment.

  In a fire extinguishing experiment conducted in accordance with a fire extinguishing test standard that is officially specified for the fire extinguishing performance of a fire extinguishing tool, it was found that the throwing fire bomb of the present invention has a fire extinguishing performance nearly 10 times that of water.

Overall view of a throw-out fire bullet filled with a fire extinguisher prepared by the method of the first embodiment and the second embodiment

Below, the preparation method is shown about two types of fire extinguishing agents of this invention. In either case, the numerical values in the case of preparing 1 liter of 0.1 mol ferrous chloride (FeCl ₂ ) aqueous solution using ferrous chloride tetrahydrate (FeCl ₂ · 4H ₂ O) are shown.

Hereinafter, a process for the preparation of the case of prepare 1 L 0.1 mol ferrous chloride (FeCl ₂₎ aqueous solution. First, we measure 19.881 grams of ferrous chloride tetrahydrate (FeCl ₂ · 4H ₂ O) using an electronic balance.

Place the weighed ferrous chloride tetrahydrate (FeCl ₂ · 4H ₂ O) in a suitable glass container, add an appropriate amount of pure water, stir and dissolve completely.

The aqueous solution dissolved in paragraph 0019 is transferred to a 1 liter volumetric flask, pure water is added to the marked line of the volumetric flask, and the mixture is stirred so that the concentration becomes uniform.

The preparation method for preparing 1 liter of 0.1 molar ferrous chloride (FeCl ₂ ) and 2 volume percent sodium lauryl sulfate aqueous solution is shown below. First, we measure 19.881 grams of ferrous chloride tetrahydrate (FeCl ₂ · 4H ₂ O) using an electronic balance.

Place the weighed ferrous chloride tetrahydrate (FeCl ₂ · 4H ₂ O) in a suitable glass container, add an appropriate amount of pure water, stir and dissolve completely.

  Weigh 29.7030 grams of sodium lauryl sulfate using an electronic balance.

  Put the weighed sodium lauryl sulfate in a suitable glass container, add an appropriate amount of pure water, stir and dissolve completely. Here, since sodium lauryl sulfate is slightly difficult to dissolve in water, it is stirred while raising the temperature as necessary.

The aqueous solution in which the ferrous chloride tetrahydrate (FeCl ₂ .4H ₂ O) is dissolved in the paragraph 0022 is added to the aqueous solution in which the paragraph 0024 is dissolved. The stirring of the aqueous solution at this time is avoided because it is difficult to determine the amount of liquid due to bubbles.

  Transfer 1 liter of the solution in paragraph 0025 to the volumetric flask, add pure water up to the marked line of the volumetric flask, and stir to make the concentration uniform.

  Fire extinguishing performance that is nearly 10 times that of water and that is equivalent to or better than other types of fire extinguishing bullets can be easily thrown away. It is possible to provide a throwing fire bomb that can perform an initial fire extinguishing by performing a fire extinguishing operation that can be performed.

  In addition, the amount of fire extinguisher used can be reduced within the range that can maintain its fire extinguishing performance, so that the manufacturing cost is reduced, and the amount of iron oxide that can occur during storage is also kept small. The fire extinguishing agent can be exchanged via the lid of the container, so that only the extinguishing agent can be exchanged, which contributes to cost reduction in the long term.

  Furthermore, since the toxicity according to the present invention is lower than the concentration evaluated previously, the toxicity to humans and the environment is highly useful as a commercial product, and the promotion of use can be expected.

  In this way, the value of commercialization is considered high.

1 Throwing fire extinguisher 2 Container 3 Container lid 4 Fire extinguisher (in container)

Claims (1)

A fire extinguishing bomb that extinguishes fire by throwing a container filled with a fire extinguisher, and ferrous chloride tetrahydrate having a concentration of 0.01 mol / liter to 0.1 mol / liter as a fire extinguisher filling the container Either an aqueous solution of a hydrate or an aqueous solution in which sodium lauryl sulfate as a surfactant is mixed with an aqueous solution of ferrous chloride tetrahydrate having a concentration of 0.01 mol / liter to 0.1 mol / liter is used. Characteristic throw-out fire bomb.

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