Water-based fire extinguishing agent and preparation method thereof

Abstract

The invention provides a water-based fire extinguishing agent and a preparation method thereof, and belongs to the technical field of fire extinguishing agents. The water-based fire extinguishing agent comprises a component A and a component B, the component A comprises potassium bicarbonate, potassium carbonate, potassium chloride and sodium acetate, and the component B comprises glycerin and water; the water-based fire extinguishing agent disclosed by the invention is clean in components, safe and pollution-free, can exert a remarkable fire extinguishing effect on general fire disasters, oil fire disasters, edible oil fire disasters and other fire disasters occurring in a home environment, and has very good practicability.

Description

Technical Field

[0001] This invention belongs to the field of fire extinguishing agent technology, specifically relating to a water-based fire extinguishing agent and its preparation method. Background Technology

[0002] Fire extinguishing agents effectively disrupt combustion conditions and terminate combustion. Water is one of the most common substances on Earth, a vital resource for all life, including humans, and a crucial component of living organisms, playing a significant role in life's evolution. Water is readily available and widely distributed. In particular, its specific heat capacity and heat of vaporization are relatively high, allowing it to effectively absorb heat energy during its vaporization stage, resulting in good cooling. The steam generated by water occupies the combustion zone, preventing fresh air from entering and reducing the oxygen concentration, thus weakening or even stopping the combustion. Therefore, water is the most commonly used fire extinguishing agent. Water's advantage as a fire extinguishing agent also lies in its non-toxicity and harmlessness. However, when oily substances burn, the introduction of water can cause flammable oil to splash and can promote a water-gas reaction, producing flammable or toxic hydrogen and CO, which pose a serious threat to life if inhaled. Therefore, water cannot be directly used as a fire extinguishing agent for oily substances.

[0003] Home environments, such as kitchens, often contain and store flammable materials like grease, and the presence of frequently used electrical appliances makes kitchen fire situations complex. Firefighting in home environments must balance effectiveness with its impact on daily life, requiring extinguishing agents to be non-toxic, harmless, and non-corrosive. Current extinguishing agents are not suitable for general fires, oil fires, and cooking oil fires. Therefore, there is a need to develop an extinguishing agent suitable for home fires that can effectively extinguish general fires, oil fires, and cooking oil fires. Summary of the Invention

[0004] To address some shortcomings in existing technologies, this invention provides a water-based fire extinguishing agent and its preparation method. The water-based fire extinguishing agent of this invention comprises Class A components and Class B components. Class A components include potassium bicarbonate, potassium carbonate, potassium chloride, and sodium acetate, while Class B components include glycerol and water. The water-based fire extinguishing agent of this invention is clean, safe, and pollution-free, and can exert significant fire extinguishing effects on general fires, oil fires, and edible oil fires occurring in home environments, demonstrating excellent practicality.

[0005] To achieve the above-mentioned technical objectives, the present invention employs the following technical means:

[0006] The present invention first provides a water-based fire extinguishing agent, which includes a Class A component and a Class B component. The Class A component includes potassium bicarbonate, potassium carbonate, potassium chloride, and sodium acetate trihydrate, and the Class B component includes glycerol and water.

[0007] Preferably, by mass percentage, the water-based fire extinguishing agent contains 10-21% potassium bicarbonate, 0.5%-10% potassium carbonate, 0.7%-1.5% potassium chloride, and 3%-7% sodium acetate trihydrate.

[0008] Preferably, the water-based fire extinguishing agent contains 8% to 22% glycerol and 45% to 76% water by mass percentage.

[0009] Preferably, the water includes deionized water or distilled water.

[0010] Preferably, the potassium carbonate and potassium bicarbonate in the fire extinguishing agent can act as a pH buffer pair, and the pH value of the fire extinguishing agent is 7.7 to 9.5. The mass fraction can be adjusted within the set range according to the required pH value.

[0011] The present invention also provides a method for preparing the above-mentioned water-based fire extinguishing agent, the method comprising:

[0012] Potassium bicarbonate, sodium acetate trihydrate, potassium chloride, and potassium carbonate were dissolved in a portion of water in sequence. After stirring until fully dissolved and mixed evenly, glycerol and the remaining water were added, and stirring was continued until evenly mixed. Then, a aging reaction was carried out. After the reaction was completed, the water-based fire extinguishing agent was obtained.

[0013] Preferably, by mass percentage, the content of potassium bicarbonate is 10-21%, the content of potassium carbonate is 0.5%-10%, the content of potassium chloride is 0.7%-1.5%, the content of sodium acetate trihydrate is 3%-7%, the content of glycerol is 8%-22%, and the content of water is 45%-76%.

[0014] Preferably, the stirring time continues for more than 2 hours.

[0015] Preferably, the ripening time is 3 to 24 hours.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The water-based fire extinguishing agent of this invention has a good fire extinguishing effect at temperatures of -5℃ and above. The components of the fire extinguishing agent are clean, safe and pollution-free, and can play a significant fire extinguishing role in general fires, oil fires and cooking oil fires that occur in kitchens.

[0018] The water-based fire extinguishing agent of this invention conforms to national standards and can still be used normally in ambient temperatures as low as -5°C without the use of specific antifreeze agents, thus overcoming limitations imposed by high and low temperature climates. Because its pH value is within the range required by regulations, it does not use rust inhibitors, and the raw materials used are non-polluting and easily removable inorganic salts, making it an environmentally friendly fire extinguishing agent. The water-based fire extinguishing agent of this invention has a long shelf life and high stability. When placed 3 meters above a fire source, it can extinguish the fire rapidly within 3 seconds. Attached Figure Description

[0019] Figure 1 This is a flowchart illustrating the preparation process of the water-based fire extinguishing agent described in this invention. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0021] Example 1:

[0022] Add 10 parts potassium bicarbonate, 2 parts potassium carbonate, 1 part potassium chloride, and 4 parts sodium acetate trihydrate to 70 parts water by mass. Stir until completely dissolved, then add 13 parts glycerol and continue stirring for 2 hours. Let it mature for 24 hours, then filter to remove solid impurities to obtain a water-based fire extinguishing agent.

[0023] The performance of the prepared water-based fire extinguishing agent was investigated. The results showed that the freezing point of the prepared water-based fire extinguishing agent was -10 to -8℃, and the pH value was 7.7 to 9.5. Furthermore, this embodiment also investigated the corrosion rate of the water-based fire extinguishing agent on different metals. The results showed that the corrosion rate of the Q235 steel sheet described in this invention was 1.2-3.2 mg / d·dm³. 2 The corrosion rate on 3A21 aluminum sheets is 0.2-0.8 mg / d·dm³. 2 This indicates that the water-based fire extinguishing agent described in this invention has almost no corrosive effect on metals.

[0024] In addition, this embodiment also investigated the stability of the water-based fire extinguishing agent. The investigation found that the water-based fire extinguishing agent of the present invention has a stability of more than 3 years and has long-term stability.

[0025] Example 2:

[0026] Add 10 parts potassium bicarbonate, 2.5 parts potassium carbonate, 1.5 parts potassium chloride, and 7 parts sodium acetate trihydrate to 60 parts water by mass. Stir until completely dissolved, then add 19 parts glycerol and continue stirring for 2 hours. Let it mature for 24 hours, then filter to remove solid impurities to obtain a water-based fire extinguishing agent.

[0027] Example 3:

[0028] Add 10 parts potassium bicarbonate, 1.5 parts potassium carbonate, 1.5 parts potassium chloride, and 3 parts sodium acetate trihydrate to 76 parts water by mass. Stir until completely dissolved, then add 8 parts glycerol and continue stirring for 2 hours. Let it mature for 24 hours, then filter to remove solid impurities to obtain a water-based fire extinguishing agent.

[0029] Example 4:

[0030] Add 21 parts potassium bicarbonate, 5 parts potassium carbonate, 1 part potassium chloride, and 6 parts sodium acetate trihydrate to 45 parts water by mass. Stir until completely dissolved, then add 22 parts glycerol and continue stirring for 2 hours. Let it mature for 24 hours, then filter to remove solid impurities to obtain a water-based fire extinguishing agent.

[0031] Example 5:

[0032] Add 15 parts potassium bicarbonate, 1.3 parts potassium carbonate, 0.7 parts potassium chloride, and 3 parts sodium acetate trihydrate to 60 parts water by mass. Stir until completely dissolved, then add 20 parts glycerol and continue stirring for 2 hours. Let it mature for 24 hours, then filter to remove solid impurities to obtain a water-based fire extinguishing agent.

[0033] Example 6:

[0034] Add 16 parts potassium bicarbonate, 9.5 parts potassium carbonate, 1.5 parts potassium chloride, and 7 parts sodium acetate trihydrate to 50 parts water by mass. Stir until completely dissolved, then add 16 parts glycerol and continue stirring for 2 hours. Let it mature for 24 hours, then filter to remove solid impurities to obtain a water-based fire extinguishing agent.

[0035] Example 7:

[0036] This embodiment examines the fire extinguishing ability of the water-based fire extinguishing agent prepared in Example 1 by simulating cooking oil fires at different temperatures. The specific steps are as follows:

[0037] At room temperatures of 35℃, 20℃, 0℃ and -5℃, a fire of 250mL cooking oil was simulated. When the flame height was about 1.5m, 3L of fire extinguishing agent was used to extinguish the fire. The agent was placed 3m away from the base of the fire source, and the extinguishing time was recorded.

[0038] Investigations showed that the extinguishing agent, placed 3 meters above the fire source, could extinguish the fire rapidly within 3 seconds. This demonstrates that the water-based extinguishing agent described in this invention can effectively extinguish general fires, oil fires, and cooking oil fires occurring in residential environments, exhibiting excellent practicality.

[0039] The present invention provides a heat-resistant water-based fire extinguishing agent and its preparation method. By adjusting the ratio of inorganic and organic substances in the components, the obtained fire extinguishing agent can be used normally at temperatures as low as -5°C without the use of antifreeze, and is suitable for various types of fires.

[0040] In summary, the water-based fire extinguishing agent of this invention conforms to national standards and can be used normally at ambient temperatures as low as -5°C without the use of specific antifreeze agents, thus overcoming limitations imposed by high and low temperature climates. Because its pH value is within the range required by regulations, it does not use rust inhibitors, and the raw materials used are non-polluting and easily removable inorganic salts, making it an environmentally friendly fire extinguishing agent. It also has a long shelf life. Therefore, the water-based fire extinguishing agent of this invention is a multifunctional, safe, and environmentally friendly water-based fire extinguishing agent.

[0041] In summary, the water-based fire extinguishing agent of this invention comprises Class A components and Class B components. Class A components include potassium bicarbonate, potassium carbonate, potassium chloride, and sodium acetate, while Class B components include glycerin and water. The water-based fire extinguishing agent of this invention is clean, safe, and pollution-free, and can exert a significant fire extinguishing effect on general fires, oil fires, and cooking oil fires occurring in home environments, demonstrating excellent practicality.

[0042] The embodiments described above are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essence of the present invention shall fall within the protection scope of the present invention.

[0043] The embodiments described above are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An aqueous fire extinguishing agent, characterized in that, The aqueous fire extinguishing agent comprises a Class A component and a Class B component, the Class A component comprises potassium bicarbonate, potassium carbonate, potassium chloride and sodium acetate trihydrate, and the Class B component comprises glycerol and water.

2. The aqueous fire extinguishing agent according to claim 1, characterized in that The content of potassium bicarbonate in the aqueous fire extinguishing agent is 10-21% by mass, the content of potassium carbonate is 0.5-10% by mass, the content of potassium chloride is 0.7-1.5% by mass, and the content of sodium acetate trihydrate is 3-7% by mass.

3. The aqueous fire extinguishing agent according to claim 1, characterized in that, The content of glycerol in the aqueous fire extinguishing agent is 8-22% by mass, and the content of water is 45-76% by mass.

4. The aqueous fire extinguishing agent of claim 1, wherein The water comprises deionized water or distilled water.

5. The aqueous fire extinguishing agent of claim 1, wherein The pH value of the fire extinguishing agent is 7.7-9.

5.

6. Process for the preparation of an aqueous extinguishing agent according to any one of claims 1 to 5, characterized in that The method comprises: The potassium bicarbonate, sodium acetate trihydrate, potassium chloride and potassium carbonate are sequentially dissolved in part of the water, and after stirring to fully dissolve and uniformly mix, the glycerol and the remaining water are added, and the stirring is continued until the mixture is uniformly mixed, then a ripening reaction is carried out, and after the reaction is completed, the aqueous fire extinguishing agent is obtained.

7. The production method according to claim 6, wherein The content of potassium bicarbonate is 10-21% by mass, the content of potassium carbonate is 0.5-10% by mass, the content of potassium chloride is 0.7-1.5% by mass, the content of sodium acetate trihydrate is 3-7% by mass, the content of glycerol is 8-22% by mass, and the content of water is 45-76% by mass.

8. The preparation method according to claim 6, characterized in that, The time of continuous stirring is more than 2h.

9. The preparation method according to claim 6, characterized in that, The ripening time is 3-24h.

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