JP2013075129A - Manufacturing method of fire extinguishing agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that it is often the case that a general person, who is not sufficiently trained, cannot use a fire extinguisher, though it is manufactured and sold for the purpose of initial fire extinguishment, while diversification of a fire is advanced in recent years and a performance of a fire extinguishing agent has to be improved.SOLUTION: The fire extinguishing agent with improved fire extinguishing range and fire extinguishing capability is manufactured. Also, the fire extinguishing agent is applied to a conventional fire extinguisher, an aerosol fire extinguishing implement and a fire extinguishing implement, for which a container of a resin or the like to be broken by an impact is filled with the fire extinguishing agent and which is thrown into the origin of fire and broken to extinguish the fire, and is used in multiple items.

Description

The present invention relates to a method for producing a fire extinguishing agent.

The fire extinguisher component is composed of various compositions.
For example, JP-A-2001-37901 discloses urea, sodium chloride, anhydrous sodium carbonate, ammonium sulfate, and the like.

However, the manufacturing method is not disclosed as know-how by each company.
The present invention has disclosed a method for producing a fire extinguishing agent.

JP 2001-37901 A

In recent years, with the diversification of fires, the performance of fire extinguishing agents must be improved, but fire extinguishers are well trained despite being manufactured and sold for the purpose of initial fire fighting. There are many cases that no ordinary person can use.

According to the present invention, by increasing the extinguishing performance of the extinguishing agent, for example, about 600 ml of extinguishing agent is filled in a container that can be easily broken by an impact, and the fire extinguishing agent is sprayed by throwing it to the fire source in the event of a fire. Because it can be used for fire extinguishing equipment that does not require training, the initial fire fighting can be completed more quickly.
Since the target fires in this case are A fires (paper, wood, etc.) and B fires (petroleum fires), the scope of application is wider than those that can extinguish only A fires like conventional throwing fire extinguishing tools. Can complete a more perfect initial fire fighting.

In this case, since the weight is comparatively light from 700 g to 800 g, it is possible to carry out long throwing and take a safe distance from the fire source.

According to the method of the present invention, it is possible to provide a safe fire extinguishing agent that does not affect human livestock.
In addition, the process of maintaining the solution at a temperature of 85 ° C. to 90 ° C. for 15 to 25 minutes can discharge an unnecessary amount of carbon dioxide / ammonia for extinguishing the fire, and when it is filled in a fire extinguisher or a resin container, it is affected by the ambient temperature. It is safe by preventing accidents such as internal pressure rising and damaging the container.
In this case, carbon dioxide and ammonia effective for extinguishing fire remain.

The mixture of diammonium phosphate and sodium bicarbonate is decomposed into carbon dioxide and ammonia in response to the heat of the fire during fire extinguishing. Carbon dioxide gas inhibits the combination of combustion products and oxygen in the air, and ammonia lowers the temperature of the combustion products by the cooling effect and has an alkaline property, so it neutralizes the oxidation of the combustion products and extinguishes the fire. It becomes possible.
Sodium chloride has a catalytic action that promotes the reaction between diammonium phosphate and sodium hydrogen carbonate, and an action that lowers the freezing point of the fire extinguishing agent.
Urea has the effect of reducing the surface tension of the combustion product surface and allowing the extinguishing agent to penetrate.
Ammonium sulfate has the effect of increasing the ignition point of wood, paper, etc., and therefore can prevent reburning after extinguishing.

When 600 ml of fire extinguishing agent manufactured according to the present invention was filled in a resin container that was destroyed by impact, a fire extinguishing experiment was conducted using a second model A (as shown in Figure 1) defined by the Fire Service Act. The fire was completely extinguished. When extinguishing this model with a water bucket, 24L of water is required.
Therefore, it was confirmed that the fire extinguishing effect about 20 times as much as that of water was obtained by using the fire extinguisher of the present invention.

When a fire extinguishing agent 600 ml produced according to the present invention was filled in a resin container that was destroyed by impact, a gasoline fire extinguishing experiment was conducted using the first model B (see Figure 2) defined by the Fire Service Act. The fire was completely extinguished.

A product filled with 600 ml of a fire extinguisher prepared in accordance with the present invention was filled in a resin container that was destroyed by impact and left in a 40 ° C. atmosphere for 24 hours, and then left in a −20 ° C. atmosphere for 24 hours. It was left at 20 ° C. for 24 hours.
When the state of the container was observed every 2 hours at each temperature, expansion of the container, cracking due to freezing of the extinguishing agent, deformation, etc. were not confirmed.
Usually, since it is desirable that the operating temperature range of the fire extinguishing tool is −20 ° C. to 40 ° C., it was confirmed that the fire extinguishing agent produced according to the present invention satisfies this condition.

The fire extinguisher produced according to the present invention is used in a fire extinguisher, an aerosol fire extinguishing tool, a fire extinguishing tool that fills a container such as a resin that can be broken by an impact, and throws it to a fire source.

Claims (3)

A method of manufacturing a fire extinguisher to be put into a fire extinguisher and a fire extinguishing tool, a step of dissolving 15 g to 25 g of sodium chloride in hot water of 50 ° C. to 60 ° C., and a step of dissolving 100 g to 150 g of diammonium phosphate A step of dissolving 50 g to 80 g of sodium hydrogen carbonate, a step of maintaining the mixed chemical solution at a temperature of 85 ° C. to 90 ° C. for 20 to 30 minutes, and a step of dissolving 50 g to 70 g of urea. A method for producing a fire extinguishing agent, comprising a step of adding 90 g to 110 g of ammonium sulfate and dissolving the total amount to 600 ml. The method for producing a fire extinguishing agent according to claim 1, further comprising a step of adding from 80 ml to 120 ml of ethylene glycol as a freezing point depressant. The method for producing a fire extinguisher according to claim 2, further comprising a step of adding 20 ml to 40 ml of a water film fire extinguisher which is effective for petroleum fires.