阅读说明：本技术 灭火剂及其应用 (Fire extinguishing agent and application thereof ) 是由 李斌 吴天桂 华滨 华乐 来超良 于 2019-09-18 设计创作，主要内容包括：本发明涉及一种灭火剂及其应用,所述灭火剂包括发泡剂、亲油剂、添加剂和水,所述亲油剂与油滴的接触角小于等于45°。本发明的灭火剂中包括有对油液具有很好吸附及结合能力的亲油剂,水解蛋白可溶解于该亲油剂中且不与该亲油剂反应,所以,本发明的灭火剂具有优异的亲油效应,且不破坏发泡剂的发泡特性,可以适用于各种油类液体火灾的扑救,尤其适用于油类液体火灾引起的流淌火的扑救。(The invention relates to a fire extinguishing agent and application thereof, wherein the fire extinguishing agent comprises a foaming agent, an oleophilic agent, an additive and water, and the contact angle between the oleophilic agent and oil drops is less than or equal to 45 degrees. The fire extinguishing agent comprises the oleophilic agent with good adsorption and binding capacity to oil, and the hydrolyzed protein can be dissolved in the oleophilic agent and does not react with the oleophilic agent, so the fire extinguishing agent has excellent oleophilic effect, does not destroy the foaming characteristic of a foaming agent, can be suitable for extinguishing various oil liquid fires, and is particularly suitable for extinguishing flowing fire caused by the oil liquid fire.)

1. The fire extinguishing agent is characterized by comprising a foaming agent, an oleophilic agent, an additive and water, wherein the contact angle between the oleophilic agent and oil drops is less than or equal to 45 degrees.

2. The fire extinguishing agent according to claim 1, wherein the rolling angle of the oleophilic agent with oil droplets is 60 ° or less.

3. The fire extinguishing agent according to claim 2, wherein the contact angle of the oleophilic agent with oil drops is less than 45 ° and the rolling angle is less than 60 °.

4. The fire extinguishing agent of claim 1, wherein the oleophilic agent comprises at least one of sodium stearate, sodium oleate.

5. The fire extinguishing agent of claim 1, wherein the foaming agent comprises hydrolyzed protein.

6. The fire extinguishing agent of claim 1, wherein the additive comprises at least one of a stabilizer, a preservative, and a freezing point depressant.

7. The fire extinguishing agent according to claim 1, wherein the volume percentage of the lipophilic agent in the fire extinguishing agent is 3% to 5%.

8. The fire extinguishing agent according to claim 1, wherein the volume percentage of the foaming agent in the fire extinguishing agent is 2.25-5.1%.

9. The fire extinguishing agent according to claim 1, wherein the additive is present in an amount of 0.85 to 2.6% by volume.

10. The application of the fire extinguishing agent as claimed in any one of claims 1 to 9, wherein the fire extinguishing agent is used for fighting oil liquid fire.

Technical Field

The invention relates to the technical field of fire-fighting articles, in particular to a fire extinguishing agent and application thereof.

Background

The flowing fire is a flame type which is caused by that oil liquid such as fuel oil and the like is combusted and the fire is rapidly spread, has the characteristics of high spreading speed and wide firing area, and is extremely harmful. For the flowing fire caused by the burning of oil liquid, the foam fire extinguishing agent is usually used for extinguishing fire, but the traditional foam fire extinguishing agent has low flowing speed, and the foam fire extinguishing agent is carried into a fire area manually or mechanically and then is sprayed to a specified fire point, so that the fire extinguishing efficiency is low and the risk is high.

Disclosure of Invention

In view of the above, there is a need to provide a fire extinguishing agent and its application; the oleophilic agent in the fire extinguishing agent can be quickly diffused in the oil liquid to bring the foaming agent to an ignition point, can realize quick fire extinguishing, and is suitable for fighting fire caused by the oil liquid.

The fire extinguishing agent comprises a foaming agent, an oleophilic agent, an additive and water, wherein the contact angle between the oleophilic agent and oil drops is less than or equal to 45 degrees.

In one embodiment, the rolling angle of the oleophilic agent and the oil drops is less than or equal to 60 degrees.

In one embodiment, the contact angle between the oleophilic agent and oil drops is less than 45 degrees, and the rolling angle is less than 60 degrees.

In one embodiment, the oleophilic agent comprises at least one of sodium stearate, sodium oleate.

In one embodiment, the foaming agent comprises hydrolyzed protein.

In one embodiment, the additive comprises at least one of a stabilizer, a preservative, and a freezing point depressant.

In one embodiment, the volume percentage of the oleophilic agent in the fire extinguishing agent is 3-5%.

In one embodiment, the volume percentage of the foaming agent in the fire extinguishing agent is 2.25-5.1%.

In one embodiment, the volume percentage of the additive in the fire extinguishing agent is 0.85-2.6%.

The application of the fire extinguishing agent is used for extinguishing oil liquid fire.

The fire extinguishing agent comprises the oleophilic agent with good adsorption and binding capacity to oil, and the hydrolyzed protein can be dissolved in the oleophilic agent and does not react with the oleophilic agent, so the fire extinguishing agent has excellent oleophilic effect, does not destroy the foaming characteristic of a foaming agent, can be suitable for extinguishing various oil liquid fires, and is particularly suitable for extinguishing flowing fire caused by the oil liquid fire.

Drawings

Fig. 1 is a schematic view of the diffusion process of the fire extinguishing agent.

In the figure: 10. an oil-based liquid; 20. a flame; 30. a fire extinguishing agent.

Detailed Description

The fire extinguishing agent and the application thereof provided by the invention will be further explained below.

The fire extinguishing agent provided by the invention comprises a foaming agent, an oleophilic agent, an additive and water, wherein the contact angle between the oleophilic agent and oil drops is less than or equal to 45 degrees.

In the fire extinguishing agent, the oleophilic agent has good adsorption and combination capacity on oil drops, so that the fire extinguishing agent has excellent oleophilic effect, can be rapidly diffused on the surface of oil, and does not destroy the foaming characteristic of a foaming agent. Therefore, the fire extinguishing agent can be suitable for extinguishing various oil liquid fires, and is particularly suitable for extinguishing flowing fires caused by various oil liquid fires.

In order to make the fire extinguishing agent of the present invention have better oleophilic effect, the rolling angle between the oleophilic agent and oil drops is preferably less than or equal to 60 °. Further, the contact angle between the oleophilic agent and oil drops is preferably less than 45 degrees, and the rolling angle is preferably less than 60 degrees. More preferably, the contact angle between the oleophilic agent and the oil drop is 20-45 degrees, and the rolling angle is 30-60 degrees.

Specifically, the type of the lipophilic agent is not limited, and the lipophilic agent can be mutually soluble with the foaming agent and does not react with the foaming agent. Considering the lipophilic effect of the lipophilic agent and the cost, the lipophilic agent preferably comprises at least one of sodium stearate and sodium oleate.

In addition, sodium stearate and sodium oleate also have certain water solubility, can be washed away by municipal water or rainwater after a fire is extinguished, cannot pollute the environment, and has the advantages of strong cleanability, small pollution and the like.

In particular, the hydrolyzed protein has good foamability, thermal stability and good fluidity, can quickly form a covering layer on the surface of oil liquid, can be biodegraded, and is environment-friendly. Therefore, the foaming agent preferably comprises hydrolysed proteins, which may be obtained by hydrolysis of animal or vegetable proteins.

The water is preferably distilled water in order to reduce the influence on the properties such as the foamability of the foaming agent.

In addition, in order to ensure and further improve the performance of the fire extinguishing agent, the fire extinguishing agent also comprises an additive, and the additive comprises at least one of a stabilizer, a preservative and an antifreeze. Preferably including stabilizers, preservatives, and anti-freeze agents, and the like.

Specifically, the stabilizer comprises at least one of ferrous sulfate and copper sulfate, the preservative comprises at least one of phenol and formaldehyde, and the antifreeze comprises at least one of ethylene glycol, propylene glycol and glycerol.

In the fire extinguishing agent, too little lipophilic agent can reduce the self-diffusion speed and the covering rate of the fire extinguishing agent in oil liquid, too much lipophilic agent can reduce the foaming effect of the foaming agent, the foam breaking speed can be increased, and the stability after the foam is formed is reduced. Therefore, in order to balance the oleophylic effect and the foaming effect of the fire extinguishing agent, the volume percentage of the oleophylic agent in the fire extinguishing agent is 3-5%, the volume percentage of the foaming agent is 2.25-5.1%, and the volume percentage of the additive is 0.85-2.6%.

Specifically, when the additive comprises a stabilizer, a preservative and an antifreeze, the volume percentage of the oleophilic agent in the fire extinguishing agent is 3-5%, the volume percentage of the foaming agent is 2.25-5.1%, the volume percentage of the stabilizer is 0.5-1.4%, the volume percentage of the antifreeze is 0.25-0.8%, and the volume percentage of the preservative is 0.1-0.4%.

Preferably, in percentage by volume, the fire extinguishing agent contains 5 percent by volume of the oleophilic agent, 4.5 percent by volume of the foaming agent, 1 percent by volume of the stabilizer, 0.5 percent by volume of the antifreezing agent and 0.2 percent by volume of the preservative.

Specifically, the fire extinguishing agent of the invention can be prepared by the following steps:

s1, providing hydrolyzed protein, mixing the hydrolyzed protein with water, adding a stabilizer, and mixing to obtain a mixed solution;

and S2, mixing the mixed solution with a lipophilic agent, a preservative and an antifreezing agent to obtain the fire extinguishing agent.

Specifically, in step S1, the stabilizer is added and then stirred and mixed at 50-60 ℃ for about 30 min.

The fire extinguishing agent obtained in step S2 is a mixture of foaming agent, water and lipophilic agent, which are dissolved in each other.

The fire extinguishing agent can be stored in a storage tank and is placed for standby at the normal pressure of 0-40 ℃.

The invention also provides an application of the fire extinguishing agent, and the fire extinguishing agent is used for extinguishing oil liquid fire, and further used for extinguishing drooling fire caused by the oil liquid fire.

As shown in fig. 1, when oil liquid 10 such as gasoline and diesel oil leaks and a fire breaks out, the leaked oil liquid 10 flows around, and flame 20 is rapidly diffused along with the flowing of the oil liquid to form a flowing fire, which is extremely harmful. At this time, as shown in the third and fourth embodiments, the fire extinguishing agent 30 of the present invention is foamed by a foam generator or a foam fire engine, and then sprayed to the flame 20 by a foam fire-fighting robot or a foam gun. By means of the oleophilic effect of the oleophilic agent in the fire extinguishing agent 30, the fire extinguishing agent 30 can be quickly diffused to the surface of the oil liquid 10 after being sprayed to the flame 20, and quickly covers the area where the flowing fire spreads along with the flowing of the oil liquid 10, so that the fire rescue efficiency is greatly improved. Moreover, the difficulty that fire officers and soldiers need to go deep into the area on fire to put out a fire can be avoided, the workload of fire rescue is reduced, and the safety of the fire rescue is improved.

Hereinafter, the fire extinguishing agent and its use will be further described by the following specific examples.