阅读说明：本技术 一种生态环保泡沫灭火剂及其制备方法 (Ecological environment-friendly foam extinguishing agent and preparation method thereof ) 是由 郑嘉豪 于 2021-09-26 设计创作，主要内容包括：本发明提供了一种生态环保泡沫灭火剂及其制备方法,属于灭火剂技术领域。本发明使用椰子油两性起泡剂和甜菜碱两性起泡剂作为起泡原料,成分环保,对环境无污染,在灭火时能够生成大量的细小泡沫,从而降低温度、阻隔氧气,以达到灭火的效果。本发明通过加入壳聚糖基生物质溶液,能够断绝火源能量；本发明通过加入N-(2)、尿素和丙二醇,能够起到阻燃抗冻的效果,进一步提高灭火效果。本发明提供的生态环保泡沫灭火剂成分环保,在灭火时不产生有害副产品,不造成二次污染；且本发明提供的生态环保泡沫灭火剂具有良好的灭火速度,能够用于森林、油田、矿山、草场、机场、车站或码头的灭火。(The invention provides an ecological environment-friendly foam extinguishing agent and a preparation method thereof, belonging to the technical field of extinguishing agents. The coconut oil amphoteric foaming agent and the betaine amphoteric foaming agent are used as foaming raw materials, the components are environment-friendly, no pollution is caused to the environment, and a large amount of fine foam can be generated during fire extinguishing, so that the temperature is reduced, oxygen is blocked, and the fire extinguishing effect is achieved. The invention can cut off the energy of fire source by adding the chitosan-based biomass solution; the invention adds N 2 Urea and propylene glycol can play a role in flame retardance and frost resistance, and the fire extinguishing effect is further improved. The ecological environment-friendly foam extinguishing agent provided by the invention is environment-friendly in components, does not generate harmful byproducts during fire extinguishing, and does not cause secondary pollution; the ecological environment-friendly foam extinguishing agent provided by the invention has good extinguishing speed, and can be used for extinguishing fire in forests, oil fields, mines, meadows, airports, stations or wharfs.)

1. An ecological environment-friendly foam extinguishing agent comprises the following components in percentage by mass:

the baume degree of the chitosan-based biomass solution is 0.5-3.6 DEG Be, and the deacetylation degree is more than or equal to 92%.

2. The eco-friendly foam extinguishing agent according to claim 1, comprising the following components:

3. the eco-friendly foam fire extinguishing agent according to claim 1 or 2, wherein in the chitosan-based biomass solution, the chitosan-based biomass is one or more of carboxylated chitosan, chitosan salt, chitosan sulfate, chitosan oligosaccharide and hyaluronic acid-like chitosan.

4. The eco-friendly foam fire extinguishing agent according to claim 3, wherein the specific gravity of the chitosan-based biomass solution is 1.0036-1.0256.

5. The eco-friendly foam fire extinguishing agent according to claim 1 or 2, wherein N is₂Is liquid nitrogen.

6. The eco-friendly foam extinguishing agent according to claim 1 or 2, wherein the viscosity of the eco-friendly foam extinguishing agent is 2 to 8%.

7. The method for preparing the ecological environment-friendly foam extinguishing agent as claimed in any one of claims 1 to 6, comprising the following steps:

(1) mixing coconut oil amphoteric foaming agent, betaine amphoteric foaming agent, chitosan-based biomass solution, urea, propylene glycol and water to obtain mixed solution;

(2) mixing the mixed solution with N₂And packaging in a container to obtain the ecological environment-friendly foam extinguishing agent.

8. The method of claim 7, wherein the mixing in step (1) comprises:

mixing a coconut oil amphoteric foaming agent and a betaine amphoteric foaming agent with a first part of water to obtain a mixed foaming agent solution;

mixing the chitosan-based biomass solution with a second part of water to obtain a diluted chitosan-based biomass solution;

and mixing urea, propylene glycol, a mixed foaming agent solution, a diluted chitosan-based biomass solution and the residual water to obtain a mixed solution.

9. The method of claim 8, wherein the mass ratio of the first portion of water, the second portion of water, and the remaining portion of water is 1:1.03: 1.06.

10. The method according to claim 7, wherein the pressure in the container after packaging is 5 to 6 MPa.

Technical Field

The invention relates to the technical field of fire extinguishing agents, in particular to an ecological environment-friendly foam extinguishing agent and a preparation method thereof.

Background

The foam fire-extinguishing agent is an effective fire-extinguishing agent for extinguishing flammable and combustible liquid, and is mainly characterized by that on the surface of liquid a coagulated foam floating layer is formed, so that it has the functions of suffocation and cooling. Most of foam extinguishing agents in the prior art are solutions formed by aluminum sulfate and sodium bicarbonate, when a fire extinguisher is inverted, sodium bicarbonate reacts with aluminum sulfate to generate a large amount of carbon dioxide, and the water solution carries a large amount of carbon dioxide to be sprayed out, so that the purpose of extinguishing fire is achieved.

The reaction of aluminum sulfate and sodium bicarbonate foam extinguishing agent during fire extinguishing is as follows:

6NaHCO₃+Al₂(SO₄)₃＝2Al(OH)₃+3Na₂SO₄+6CO₂。

the byproduct aluminum hydroxide generated by the foam extinguishing agent causes secondary pollution to the environment and harm to human bodies.

Disclosure of Invention

In view of the above, the present invention aims to provide an ecological environment-friendly foam extinguishing agent and a preparation method thereof. The ecological environment-friendly foam extinguishing agent provided by the invention is environment-friendly in components and does not generate harmful byproducts.

In order to achieve the above object, the present invention provides the following technical solutions:

the invention provides an ecological environment-friendly foam extinguishing agent which comprises the following components in percentage by mass:

the baume degree of the chitosan-based biomass solution is 0.5-3.6 DEG Be, and the deacetylation degree is more than or equal to 92%.

Preferably, the composition comprises the following components:

preferably, in the chitosan-based biomass solution, the chitosan-like biomass is one or more of carboxylated chitosan, chitosan salt, chitosan sulfate, chitosan oligosaccharide and hyaluronic acid-like chitosan.

Preferably, the specific gravity of the chitosan-based biomass solution is 1.0036-1.0256.

Preferably, said N is₂Is liquid nitrogen.

Preferably, the viscosity of the ecological environment-friendly foam extinguishing agent is 2-8%.

The invention provides a preparation method of the ecological environment-friendly foam extinguishing agent, which comprises the following steps:

(1) mixing coconut oil amphoteric foaming agent, betaine amphoteric foaming agent, chitosan-based biomass solution, urea, propylene glycol and water to obtain mixed solution;

(2) mixing the mixed solution with N₂And packaging in a container to obtain the ecological environment-friendly foam extinguishing agent.

Preferably, the mixing in step (1) comprises:

mixing a coconut oil amphoteric foaming agent and a betaine amphoteric foaming agent with a first part of water to obtain a mixed foaming agent solution;

mixing the chitosan-based biomass solution with a second part of water to obtain a diluted chitosan-based biomass solution;

and mixing urea, propylene glycol, a mixed foaming agent solution, a diluted chitosan-based biomass solution and the residual water to obtain a mixed solution.

Preferably, the mass ratio of the first part of water, the second part of water and the rest of water is 1:1.03: 1.06.

Preferably, the pressure in the packaged container is 5-6 MPa.

The invention provides an ecological environment-friendly foam extinguishing agent which comprises the following components in percentage by mass: 20-24% of coconut oil amphoteric foaming agent; 12-15% of a betaine amphoteric foaming agent; 7-10% of chitosan-based biomass solution; n is a radical of₂4-7%; 2-3% of urea; 0.8-1.5% of propylene glycol; 44-50% of water; the baume degree of the chitosan-based biomass solution is 0.5-3.6 DEG Be, and the deacetylation degree is more than or equal to 92%. The coconut oil amphoteric foaming agent and the betaine amphoteric foaming agent are used as foaming raw materials, the components are environment-friendly, no pollution is caused to the environment, and a large amount of fine foam can be generated during fire extinguishing, so that the temperature is reduced, oxygen is blocked, and the fire extinguishing effect is achieved. The invention can cut off the energy of fire source by adding the chitosan-based biomass solution; the invention adds N₂Urea and propylene glycol can play a role in flame retardance and frost resistance, and the fire extinguishing effect is further improved. The ecological environment-friendly foam extinguishing agent provided by the invention is environment-friendly in components, does not generate harmful byproducts during fire extinguishing, and does not cause secondary pollution; the ecological environment-friendly foam extinguishing agent provided by the invention has good extinguishing speed, and can be used for forests, oil fields, mines, grasslands and airportsFire extinguishing at a station or a dock.

Drawings

FIG. 1 is a flow chart of the preparation of the ecological environment-friendly foam extinguishing agent.

Detailed Description

The invention provides an ecological environment-friendly foam extinguishing agent which comprises the following components in percentage by mass:

the baume degree of the chitosan-based biomass solution is 0.5-3.6 degrees Bee.

Unless otherwise specified, the starting materials used in the present invention are commercially available.

The ecological environment-friendly foam extinguishing agent comprises 20-24% of coconut oil amphoteric foaming agent, and preferably 22-23% by mass. In the present invention, the coconut oil amphoteric foaming agent preferably has a structural formula of:

in the present invention, the coconut oil amphoteric foaming agent has the effects of increasing the amount of foam and reducing the temperature.

The ecological environment-friendly foam extinguishing agent comprises 12-15% of betaine amphoteric foaming agent by mass percentage, and preferably 13-14%. In the present invention, the betaine amphoteric foaming agent is preferably CAB-35, CAS registry number 61789-40-0(86438-79-1), EINECS number 263-058-8, molecular formula C₁₉H₃₈N₂O₃Molecular weight is 342.52, viscosity (20 deg.C, Pa.s) is less than or equal to 400. In the invention, the betaine amphoteric foaming agent plays roles in refining foam and blocking oxygen.

The ecological environment-friendly foam extinguishing agent comprises 7-10% of chitosan-based biomass solution by mass percentage, and preferably 8-9%. In the invention, the chitosan-based biomass solution is preferably one or more of carboxylated chitosan, chitosan salt, chitosan sulfate, chitosan oligosaccharide and hyaluronic acid-like chitosan. In the present invention, the carboxylated chitosan is preferably carboxymethyl chitosan; the chitosan salt is preferably one or more of chitosan hydrochloride, chitosan quaternary ammonium salt, chitosan lactate and chitosan glutamate.

In the present invention, the solvent of the chitosan-based biomass solution is preferably water; the baume degree of the chitosan-based biomass solution is 0.5-3.6 degrees, and preferably 1-2.5 degrees. In the invention, the deacetylation degree of the chitosan-based biomass solution is more than or equal to 92 percent.

In the invention, the specific gravity of the chitosan-based biomass solution is preferably 1.0036-1.0256, and more preferably 1.01-1.02. In the invention, the chitosan-based biomass solution plays a role in isolating the energy of a fire source. Meanwhile, the chitosan-based biomass solution can be used as a cationic surfactant to play a role in promoting the uniform dispersion of all components in the formula.

The ecological environment-friendly foam extinguishing agent comprises 4-7% of N by mass percentage₂Preferably 5 to 6%. In the present invention, said N₂Preferably liquid nitrogen. In the present invention, said N₂Has the functions of inflaming retarding and increasing the pressure in the bottle.

The ecological environment-friendly foam extinguishing agent provided by the invention comprises 2-3% of urea by mass percentage, and preferably 2.5%. In the invention, the urea plays a role in flame retardance and frost resistance.

The ecological environment-friendly foam extinguishing agent comprises 0.8-1.5% of propylene glycol by mass percentage, and the optimal concentration is 1%. In the invention, the propylene glycol plays a role in flame retardance and frost resistance.

The ecological environment-friendly foam extinguishing agent comprises, by mass, 44-50% of water, preferably 45-48%. In the present invention, the water is preferably pure water. In the present invention, the water functions to reduce the viscosity of the fire extinguishing agent.

In the invention, the viscosity of the ecological environment-friendly foam extinguishing agent is preferably 2-8%, and more preferably 4-6%.

The ecological environment-friendly foam extinguishing agent provided by the invention is environment-friendly in components, does not generate harmful byproducts during fire extinguishing, and does not cause secondary pollution; the ecological environment-friendly foam extinguishing agent provided by the invention has good extinguishing speed, and can be used for extinguishing fire in forests, oil fields, mines, meadows, airports, stations or wharfs.

The invention provides a preparation method of the ecological environment-friendly foam extinguishing agent, which comprises the following steps:

(1) mixing coconut oil amphoteric foaming agent, betaine amphoteric foaming agent, chitosan-based biomass solution, urea, propylene glycol and water to obtain mixed solution;

(2) mixing the mixed solution with N₂And packaging in a container to obtain the ecological environment-friendly foam extinguishing agent.

The coconut oil amphoteric foaming agent, the betaine amphoteric foaming agent, the chitosan-based biomass solution, urea, propylene glycol and water are mixed to obtain a mixed solution. In the present invention, the mixing is preferably stirring mixing. In the present invention, the mixing includes:

mixing a coconut oil amphoteric foaming agent and a betaine amphoteric foaming agent with a first part of water to obtain a mixed foaming agent solution;

mixing the chitosan-based biomass solution with a second part of water to obtain a diluted chitosan-based biomass solution;

and mixing urea, propylene glycol, a mixed foaming agent solution, a diluted chitosan-based biomass solution and the residual water to obtain a mixed solution.

In the present invention, the mass ratio of the first part of water, the second part of water and the remaining water is preferably 1:1.03: 1.06.

After the mixed solution is obtained, the mixed solution and N are mixed₂And packaging in a container to obtain the ecological environment-friendly foam extinguishing agent. In the present invention, the container is preferably a high-pressure bottle. The invention does not require any particular packaging means, as will be appreciated by those skilled in the art. In the present inventionThe pressure in the container after packaging is preferably 5-6 MPa, and more preferably 5.5 MPa.

In the invention, after the encapsulation, the quality inspection, namely the quality inspection, is preferably carried out on the obtained ecological environment-friendly foam extinguishing agent. The quality inspection adopts a sampling inspection mode. In the present invention, the quality inspection is carried out in accordance with the inspection and test standards of GB4351-1997 fire extinguisher "general technical Condition for Portable Water-based fire extinguishers".

The preparation flow chart of the ecological environment-friendly foam extinguishing agent provided by the invention is shown in figure 1.

The eco-friendly foam fire extinguishing agent and the method for preparing the same according to the present invention will be described in detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.

Example 1

The ecological environment-friendly foam extinguishing agent is prepared according to the formula in the table 1, and the method comprises the following steps:

mixing a coconut oil amphoteric foaming agent and a betaine amphoteric foaming agent with a first part of water to obtain a solution A;

mixing the chitosan-based biomass solution with a second part of water to obtain a solution B;

mixing urea, propylene glycol, the solution A, the solution B and the residual water to obtain a mixed solution; wherein the mass ratio of the first part of water to the second part of water to the rest of water is 1:1.03: 1.06.

Filling the mixture into a high-pressure bottle and adding N₂Filling into a high-pressure bottle, wherein the pressure in the bottle reaches 5-6 MPa, and then filling is finished.

Examples 2 to 5

The formulations of examples 2-5 are shown in Table 1, and the preparation method is the same as example 1.

Comparative examples 1 to 5

The formulations of comparative examples 1 to 5 are shown in Table 1.

Comparative example 6

Comparative example 6 is a commercial conventional water-based fire extinguishing agent, CCC certificate no: 2020081810000232 brand: Aomis/Oumes, model: MSWZ/3 (major), the components include fluorocarbon surfactant, stabilizer, flame retardant and foaming agent.

TABLE 1 raw material amounts of examples and comparative examples

Performance testing

The fire extinguishing rates of the fire extinguishing agents of examples 1 to 5 and comparative examples 1 to 6 were measured, and the test methods are shown in table 2:

TABLE 2 extinguishing speed test method

The fire extinguishing rates (times) of the fire extinguishing agents of examples 1 to 5 and comparative examples 1 to 6 are shown in Table 2.

TABLE 2 extinguishing rates of extinguishing agents of examples 1 to 5 and comparative examples 1 to 6

Numbering

Burning material

Speed of fire extinguishing

Burning material

Speed of fire extinguishing

Burning material

Speed of fire extinguishing

Example 1

Wood material

25～30s

Diesel oil

45～50s

Plastic material

15～20s

Example 2

Wood material

27～35s

Diesel oil

48～51s

Plastic material

16～21s

Example 3

Wood material

28～38s

Diesel oil

48～52s

Plastic material

16～21s

Example 4

Wood material

30～35s

Diesel oil

50～55s

Plastic material

17～23s

Example 5

Wood material

30～35s

Diesel oil

50～55s

Plastic material

17～23s

Comparative example 1

Wood material

32～40s

Diesel oil

65～70s

Plastic material

15～20s

Comparative example 2

Wood material

32～41s

Diesel oil

65～76s

Plastic material

16～21s

Comparative example 3

Wood material

45～52s

Diesel oil

49～57s

Plastic material

27～32s

Comparative example 4

Wood material

25～30s

Diesel oil

52～58s

Plastic material

21～28s

Comparative example 5

Wood material

25～30s

Diesel oil

48～54s

Plastic material

17～23s

Comparative example 6

Wood material

63～70s

Diesel oil

92～103s

Plastic material

53～61s

As can be seen from the above examples and comparative examples, the present invention provides a fire extinguishing agent having a good extinguishing rate.

According to the introduction of the data of the medium-multiple foam fire extinguishing system compiled in the special report compilation of the design Specification of the low-multiple foam fire extinguishing system (compiled in 9 months in 1989) and compiled in the original design institute of the department of commerce in 10 months in 1992, the low-multiple foam mixed liquid has the supply strength of 5-7L/(min. m2), the mixing ratio of 3-6% and the fire extinguishing time of 3-5 min under the condition that the pre-combustion time is 60-120 s; the fire extinguishing time is 1-2 min under the conditions that the supply intensity of the medium-expansion foam mixed liquid is 4-4.4L (min.m2), the mixing ratio is 8%, and the pre-burning time is 60-90 s. The supply intensity was 4L/(min.m)²) When the time is short, the extinguishing time of the mixed solution of the medium-multiple protein foams is 124 s; the extinguishing time of the low-multiple protein foam mixed liquid is 459 s; the extinguishing time of the low-multiple fluorine protein foam mixed liquid is 270 s. As can be seen from the above examples and comparative examples, the present invention provides a fire extinguishing agent having a good extinguishing rate.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.