WO2015020388A1

WO2015020388A1 - Composition for eco-friendly neutral reinforced fire extinguishing agent

Info

Publication number: WO2015020388A1
Application number: PCT/KR2014/007194
Authority: WO
Inventors: 한승우; 김센
Original assignee: Han Seungwoo
Priority date: 2013-08-06
Filing date: 2014-08-05
Publication date: 2015-02-12
Also published as: KR101346190B1

Abstract

The present invention relates to a composition for an eco-friendly neutral reinforced fire extinguishing agent, and provides a composition for an eco-friendly neutral reinforced fire extinguishing agent, the composition containing: 40-70 wt% of a fire extinguishing component formed of an inorganic compound; 5-15 wt% of a surfactant in which disodium laureth sulfosuccinate having a molar number of an ethylene oxide unit added of 2-3 moles and cocamido propyl betaine are mixed at a weight ratio of 1:1; 5-10 wt% of di-2-ethyl hexyl adipate for the prevention of corrosion and freezing; 5-10 wt% of an organic acid as a pH adjuster; and the remaining wt% of water. The composition according to the present invention as described above is used for an eco-friendly neutral reinforced fire extinguishing agent which exhibits a strong fire extinguishing performance in oil fire as well as general fire, has excellent ability to prevent corrosion and freezing, does not harm the human body even at the time of fire extinguishment since the liquid of the composition is neutral, and has no bad influence on the soil even when remaining in the soil.

Description

Environment-friendly Neutral Reinforcing Liquid Extinguishing Agent Composition

The present invention relates to a neutral reinforcing liquid extinguishing agent composition, and more particularly, it exhibits a strong fire extinguishing function not only for general fires but also for oil fires, and is excellent in preventing corrosion and freezing even without layer separation or precipitation. A system fortifying liquid extinguishing agent composition.

In general, fires are classified into Class A fires, Class B fires, and Class C fires, which can be subdivided into Class D fires containing magnesium. Class A fires are combustible materials such as wood or paper that are extinguished by cooling below the ignition point with water-based fire extinguishers. Class B fires are petroleum or oil fires, and carbon dioxide (CO2), halon and foam (foam) are used. Extinguishing by fire extinguisher is used, and C-class fire is the most efficient way to extinguish oxygen by CO2 by electric fire, and extinguishing by powder extinguisher (ABC powder) is useful.

There are many kinds of materials used as fire extinguishing agents, but water has been used most as a fire extinguishing agent because its price is low, there is no fear of deterioration, and it is harmless to the human body. In particular, water has a high specific heat (1kcal / kg · ℃) and absorbs a large amount of heat, and due to the large latent heat of evaporation (539kcal / kg), a large amount of heat is taken away from the surroundings to cool the combustibles, and the expansion rate of vaporization (1,650 times) It is said that this large water vapor covers the combustion surface and the suffocation effect is large. However, when water alone is used as a fire extinguishing agent, the freezing point of water may be frozen at 0 ° C. or lower and 0 ° C., thereby causing the pipe to be damaged and causing a problem of corrosion.

In order to improve such disadvantages of water, a reinforcing liquid extinguishing agent has been developed in which a surfactant is added to enhance the penetration of water, an antifreeze is added to lower the freezing point, and an inorganic salt is added to improve the extinguishing performance.

Inorganic salts used in reinforcing liquid extinguishing agents are mainly potassium carbonate, ammonium phosphate, etc., which are yellow or colorless, viscous aqueous solution. Indicates.

Initially developed reinforcing liquid extinguishing agent is an alkaline solution with hydrogen ion concentration, that is, pH 11 ~ 12, which has great problems of corrosion and safety of the container before and after use. However, since the developed extinguishing agent extinguishing agent has been developed to strengthen the extinguishing agent having a pH in the neutral range, Class A as well as fire extinguishing B fire.

Looking at the prior art related to the extinguishing agent, Korean Patent Laid-Open Publication No. 10-2006-69626 discloses a reinforcing liquid extinguishing agent composition consisting of a fire extinguishing component, a liquid sodium silicate, a surfactant, an anti-icing agent, and water, and a method of manufacturing the same. In case of using sodium silicate, which is used as a corrosion inhibitor, there is a problem that precipitation occurs during storage or layer separation occurs, and thus, the original corrosion protection function is lowered and the extinguishing performance is also lowered due to precipitation. There is this.

Therefore, the problem to be solved by the present invention is an environmentally friendly neutral reinforcement liquid which is harmless to the human body and does not adversely affect the soil when used because it is excellent in preventing corrosion and freezing, even without layer separation or sedimentation. It is to provide a fire extinguishing agent composition.

In order to achieve the above object, the present invention

Extinguishing component 40 ~ 70% by weight of inorganic compound,

Surfactant containing 1 ~ 3 weight ratio of Disodium Laureth Sulfosuccinate and Cocamido Propyl Betaine with ethylene oxide added mole number 2-3 weight%,

5-10% by weight of Di-2-ethyl hexyl adipate for corrosion and freeze protection purposes,

5-10% by weight of organic acid and

It provides an environmentally friendly neutral reinforcing liquid extinguishing agent composition containing the balance weight% water.

In the composition according to the present invention, the extinguishing component of the inorganic compound is urea, potassium carbonate, ammonium sulfate, ammonium bicarbonate, sodium carbonate, sodium bicarbonate. (Sodium bicarbonate), Potassium bicarbonate, Mono ammonium phosphate, Di ammonium phosphate, Tri sodium phosphate, Potassium acetate, Potassium sulfate ( Potassium sulfate), magnesium carbonate (Magnesium Carbonate) may be selected from the group consisting of.

The composition according to the present invention may further comprise 5 to 10% by weight of a mixture of ethylene glycol and propylene glycol in a 1: 1 weight ratio to enhance corrosion and freeze protection.

Environmentally friendly neutral-based reinforcing liquid extinguishing agent composition according to the present invention exhibits strong fire extinguishing performance not only for general fires, but also for oil fires, while excellent in preventing corrosion and freezing, and neutralizing liquids. It is an eco-friendly neutralizer extinguishing agent that does not adversely affect the soil.

The present invention is 40 to 70% by weight of an extinguishing component consisting of an inorganic compound,

5-10% by weight of organic acid and

It is an environment-friendly neutral strengthening solution fire extinguishing agent composition containing the balance weight water.

Hereinafter, specific details will be described to practice the present invention.

Extinguishing agent composition according to the present invention

Extinguishing component 40 ~ 70% by weight of inorganic compound,

5-10% by weight of organic acid and

Residual weight percent water.

In the above-described composition according to the present invention, the extinguishing component consisting of an inorganic compound can be used without particular limitation as long as it is widely known in the art to which the present invention pertains, for example, urea, potassium carbonate, Ammonium sulfate, Ammonium bicarbonate, Sodium carbonate, Sodium bicarbonate, Potassium bicarbonate, Mono ammonium phosphate, Diammonium phosphate ammonium phosphate), sodium triphosphate (Tri sodium phosphate), potassium acetate (Potassium Acetate), potassium sulfate (Potassium sulfate), may be any one or more selected from the group consisting of magnesium carbonate (Magnesium Carbonate).

Extinguishing constituents composed of such inorganic compounds are contained in 40 to 70% by weight, if less than 40% by weight of the extinguishing capacity is lowered, exceeds 70% by weight of the corrosion resistance to the metal and economical efficiency compared to the use increases Problems such as skin irritation, and the final extinguishing agent composition may cause a problem of sediment generation over time.

The composition according to the present invention described above has the effect of increasing penetration and excellent foaming force and significantly lower surface tension than 33 dyne / cm, so that not only general fires but also oil fires can easily penetrate into the center of the combusted material to be effectively extinguished. Surfactant in which disodium laureth sulfosuccinate and cocamido propyl betaine with ethylene oxide added molar number 2-3 are mixed in a 1: 1 weight ratio. It contains 5 to 15% by weight.

The inventors of the present invention confirmed through various experiments, and as a result, the hydrophobicity increased when the added mole number of the ethylene oxide was less than 2, and the penetration and bubble generation decreased. There is a problem that bubbles are easily bubbled, deterioration of foam retention and digestive performance.

In addition, when containing 5 to 15% by weight of surfactant mixed with disodium laureth sulfosuccinate and cocamido propyl betaine in a 1: 1 weight ratio, penetration is increased and foaming power is increased. Also, the surface tension is also significantly lower than 33 dyne / cm, so that not only general fires but also oil fires can easily penetrate into the center of the combusted material to be effectively extinguished.

If the weight ratio of Disodium Laureth Sulfosuccinate and Cocamido Propyl Betaine is not 1: 1, the surface tension is higher than 33dyne / cm This falling problem can occur.

On the other hand, di-2-ethylhexyl adipate in the present invention in order to improve the existing problems that the extinguishing performance is reduced due to precipitation or layer separation during the long-term storage, which is a problem of silicate used as a corrosion inhibitor, and the corrosion protection is significantly lowered. (Di-2-ethyl hexyl adipate) is characterized in that it contains 5 to 10% by weight, the content is less than 5% by weight of the corrosion protection and freeze-resistant ability, some rust is generated, the precipitate is generated in winter, 10% by weight If it is exceeded, the effect increase is insignificant and economic loss may occur.

In addition, the pH was adjusted to a range of 6.5 to 7.5 by using 5 to 10% by weight of an organic acid as a pH adjusting agent, and the organic acid may be used without limitation as long as it is widely known in the art to which the present invention belongs, such as citric acid and malic acid.

Environment-friendly neutral-based reinforcing liquid extinguishing agent according to the present invention as described above is effective not only for general fires, but also for oil fires, the liquid is neutral, does not harm to the human body during fire extinguishing, and does not adversely affect the soil at all. It is environmentally friendly.

More specifically, the effects of the present invention are as follows: First, disodium laureth sulfosuccinate and cocamido propyl betaine having 2 to 3 moles of ethylene oxide added to inorganic digestive components. In case of containing a surfactant mixed with 1: 1 by weight ratio of Betaine), penetration is improved, surface tension is significantly lowered, and synergy with inorganic type extinguishing component makes bubble membrane not easily broken and stabilized, so it is strong in general fire and oil fire. Performance. Second, silicate which is generally used as a corrosion inhibitor is easily clouded, precipitated or separated during long-term storage, depending on the ratio of surfactants and other inorganic salts or the type of cryoprotectant. In order to improve the existing problem that the corrosion resistance is lowered and the corrosion resistance is significantly lowered, if a certain amount of di-2-ethyl hexyl adipate is contained, corrosion prevention and Excellent effect on freezing prevention. Third, when the pH is neutral, there is no harm to the human body and does not adversely affect the soil.

In addition, the composition according to the present invention may further comprise 5 to 10% by weight of a mixture of ethylene glycol and propylene glycol in a 1: 1 weight ratio to enhance corrosion and freeze protection.

In order to prevent corrosion and freezing, the present invention contains 5 to 10% by weight of di-2-ethyl hexyl adipate, but the ethylene glycol and propylene glycol are 1: 1 by weight. When 5 to 10% by weight of the mixed mixture was further included, the anti-freezing and anti-corrosion effects were confirmed to cause synergy.

Hereinafter, the present invention will be described in detail with reference to the following examples.

-- 소화약제Extinguishing agent 조성물의 제조- Preparation of the composition

50% by weight of potassium carbonate as an inorganic compound,

10 wt% of a mixture of disodium laureth sulfosuccinate and cocamido propyl betaine having an added mole number of ethylene oxide of 2 in a 1: 1 weight ratio,

5% by weight of Di-2-ethyl hexyl adipate for corrosion and freeze protection purposes,

10 wt% citric acid and

An eco-friendly neutral-based reinforcing liquid extinguishing agent composition was prepared, comprising a balance weight% of water.

First, add Potassium carbonate to water and stir until it is completely dissolved. Then, disodium laureth sulfosuccinate and cocamido propyl betaine are mixed in the same weight ratio. Added by mixing.

Next, di-2-ethyl hexyl adipate (Di-2-ethyl hexyl adipate) is added to dissolve transparently, the pH is adjusted to 6.5 to 7.5 with citric acid, and the stirring is stopped for 24 hours to stabilize the production.

Manufactured in the same manner as in Example 1, except that ethylene oxide added mole number 2 of disodium laureth sulfosuccinate and cocamido propyl betaine 1: 1 15 wt% of the surfactant mixed in weight ratio, 10 wt% of di-2-ethyl hexyl adipate for the purpose of corrosion protection and freezing is different.

Comparative Example 1

It was prepared in the same manner as in Example 1, except that only sodium disodium laureth sulfosuccinate having an ethylene oxide added mole number of 2 was used as a surfactant, and sodium silicate was also used. There is a difference in what was used.

Comparative Example 2

It was prepared in the same manner as in Example 2, except that only sodium disodium laureth sulfosuccinate having an added mole number of ethylene oxide (Ethylene Oxide) 2 was used as a surfactant, and sodium silicate was also used. There is a difference in what was used.

-물성 평가-Physical property evaluation

In order to evaluate the physical properties of the fire extinguishing agent composition prepared in the above Examples and Comparative Examples, it was measured in accordance with the fire extinguishing agent type approval and certification standards, test rules, as follows.

<Experiment: Hydrogen ion concentration>

Hydrogen ion concentration was measured by the pH measurement method of the aqueous solution, the liquid temperature was measured at 20 ± 0.5 ℃.

<Experiment: Surface Tension>

The surface tension of the reinforcement liquid extinguishing agent is measured after the solution temperature is set to 20 ± 0.5 ℃ using the surface tension meter, and the surface tension is not more than 33 dyne / cm.

Experiment: Freezing Point (Freezing Point)

If the fire extinguisher is operated under normal conditions, the reinforcing liquid to be emitted should be flameproof and have a freezing point of -20 ° C or less. At this time, the measurement of the freezing point is to inject a 10ml sample taken into a test tube with an internal diameter of 18㎜, put a thermometer, and while cooling in a Hanje bath, but stirring it with a thermometer while not supercooled, when crystals start to precipitate, lift it out of the Hanje bath, then continue. When the solution was agitated and the liquid became transparent, the temperature was read, but the average value of the result of the test was repeated three times as the solidification point.

<Experiment: Settling Amount>

In the amount of sedimentation, lubricating oil sedimentation was measured by the test method with the liquid temperature of the extinguishing agent set to 20 ± 2 ° C. without adding naphtha for precipitation. At this time, when the temperature of the reinforcing liquid extinguishing agent is measured at 20 ± 2 ℃, it should be 0.1% by volume or less.

<Experiment: Metal Corrosion Test>

Corrosion characteristics of fire extinguishing agents were evaluated by placing steel (KSD3512 SCP1), brass (KSD5201 C2801, KSD5101 C3771), aluminum (KSD6701 A5052P), and stainless steel (KSD98 STS304) in the reinforcement extinguishing agent at 38 ± 2 ° C for 21 days. The weight loss should be less than 3mg / 20cm2 each day.

The composition of the said Example and a comparative example It evaluated by the content as mentioned above, and the result was shown in Table 1.

Table 1

Metric	Example		Comparative example
Metric	One	2	One	2
Hydrogen ion concentration	7.0	7.2	7.1	7.1
Surface tension (dyne / cm)	24.3	19.0	38.1	35.5
Freezing point (℃)	-28	-27	-15	-18
Sedimentation	none	none	Occur	Occur
steel	0.11	0.05	4.1	3.6
Brass C2801	0.13	0.08	3.5	3.2
Brass C3371	0.10	0.09	4.3	3.9
aluminum	0.17	0.08	3.9	3.1
Stainless steel	0.01	0.01	0.05	0.03

In Table 1, Examples 1 and 2 satisfy the conditions of type approval and certification of fire extinguishing agent of firefighting and testing work in the test result of hydrogen ion concentration, surface tension, solidification point, sedimentation amount, and corrosiveness. Due to problems of surface tension, solidification point, sedimentation amount, and corrosiveness, it did not meet the standard of fire extinguishing agent type approval and certification technology.

-소화능력 평가-Fire Extinguishing Assessment

In order to evaluate the extinguishing ability of the reinforcing solution composition of the strengthening solution of the above Examples and Comparative Examples, it was measured as follows according to the type approval and certification technology standards, test rules.

<Experiment: Measurement of fire extinguishing performance of wood fire (Class A fire) 1>

90 pieces of dried pine and alder trees of 30mm × 30mm × 730mm (1 unit) in width × length × length are piled up in a grid shape and burned for 3 minutes, followed by extinguishing with a fire extinguisher filled with 3L of extinguishing agent. There should be no replay within 2 minutes after digestion.

<Experiment: Measurement of fire extinguishing performance of wood fire (Class A fire) 2>

144 pieces of dried pine and alder trees of 30mm × 30mm × 900mm (2 units) in width × length × length are piled up in a grid shape and burned for 3 minutes, followed by extinguishing with a fire extinguisher filled with 3L of extinguishing agent. There should be no replay within 2 minutes after digestion.

<Experiment: Measurement of fire extinguishing performance of oil fire (Class B fire) 1>

In a fire extinguishing test model having a width × length × height of 44.7 cm × 44.7 cm × 30 cm (1 unit), add 120 mm of water, add 30 mm of gasoline, and burn for 1 minute. Extinguish with a fire extinguisher. There should be no reignition within 1 minute after spinning.

<Experiment: Measurement of fire extinguishing performance of oil fire (Class B fire) 2>

In a fire extinguishing test model having a width × length × height of 77.5 cm × 77.5 cm × 30 cm (3 units), add 120 mm of water, add 30 mm of gasoline, and burn for 1 minute. Extinguish with a fire extinguisher. There should be no reignition within 1 minute after spinning.

<Experiment: Determination of fire extinguishing performance of cooking oil>

Tested by automatic fire extinguishing device standard based on type approval and certification technology standard of fire extinguishing agent. After filling with 800ml of medicine in fire extinguishing agent filling container of automatic fire extinguishing device, the amount of cooking oil is 0.8 liters. Digestive performance experiment was performed. During the fire extinguishing experiment, the fire is ignited by cooking oil, the automatic fire extinguisher is operated and automatically radiated to the burning surface of the cooking oil to perform the fire extinguishing experiment. After 2 minutes of extinguishing, the extinguishing performance is evaluated by reignition.

The digestion performance evaluation results of the compositions of the Examples and Comparative Examples are shown in Table 2 below.

TABLE 2

Metric	Example		Comparative example
Metric	One	2	One	2
Wood fire 1	No fire extinguishing	No fire extinguishing	No fire extinguishing	No fire extinguishing
Wood fire 2	No fire extinguishing	No fire extinguishing	No fire extinguishing	No fire extinguishing
Oil Fire 1	No fire extinguishing	No fire extinguishing	Fire extinguishing	Fire extinguishing
Oil Fire 2	No fire extinguishing	No fire extinguishing	Indigestion	Fire extinguishing
Cooking oil fire	No complete fire re-ignition	No complete fire re-ignition	No complete fire re-ignition	No complete fire re-ignition

As shown in Table 2, the compositions of Examples 1 and 2 are completely extinguished in wood fires, oil fires, cooking oil fires, and are not regenerated or re-ignited as a result of evaluation of fire extinguishing performance. Although satisfactory, the compositions of Comparative Examples 1 and 2 did not satisfy the extinguishing performance of the type approval of the fire extinguishing agent and certification technology standards in the fire fire.

It was prepared in the same manner as in Example 1, except that 5 wt% of the mixture containing ethylene glycol and propylene glycol in a 1: 1 weight ratio was added to enhance corrosion and freeze protection.

Corrosion tests were performed on the composition of Example 3 for steel, brass C2801, aluminum, and stainless steel, and as a result, steel 0.03, brass C2801 0.05, aluminum 0.06, and stainless steel 0.01 showed better results than Example 1. . That is, when the ethylene glycol and propylene glycol is further included in a mixture of 1: 1 by weight ratio it is confirmed that the greater the corrosion protection effect.

Environmentally friendly neutral-based reinforcing liquid extinguishing agent composition according to the present invention exhibits strong fire extinguishing performance not only for general fires, but also for oil fires, while excellent in preventing corrosion and freezing, and neutralizing liquids. It does not adversely affect the soil.

Claims

Extinguishing component 40 ~ 70% by weight of inorganic compound,

Surfactant containing 1 ~ 3 weight ratio of Disodium Laureth Sulfosuccinate and Cocamido Propyl Betaine with ethylene oxide added mole number 2-3 weight%,

5-10% by weight of Di-2-ethyl hexyl adipate for corrosion and freeze protection purposes,

5-10% by weight of organic acid and

Eco-friendly neutralizing liquid extinguishing agent composition, characterized in that it comprises a balance by weight of water.
The method of claim 1, wherein the extinguishing component consisting of an inorganic compound is Urea, Potassium carbonate, Ammonium sulfate, Ammonium bicarbonate, Sodium carbonate, Sodium bicarbonate Sodium bicarbonate, Potassium bicarbonate, Mono ammonium phosphate, Di ammonium phosphate, Tri sodium phosphate, Potassium acetate, Potassium sulfate sulfate), magnesium carbonate (Magnesium Carbonate), environmentally friendly neutralizing solution extinguishing agent composition, characterized in that selected from the group consisting of.
The environmentally friendly neutral system according to claim 1 or 2, further comprising 5 to 10% by weight of a mixture of ethylene glycol and propylene glycol in a 1: 1 weight ratio in order to enhance corrosion protection and freezing prevention. Strengthening agent extinguishing agent composition.