RU2691720C1 - Foam-forming composition for firefighting - Google Patents

Abstract

FIELD: fire-fighting equipment.SUBSTANCE: invention relates to fire extinguishing, in particular to foaming compositions based on surfactants for fire extinguishing class A and B. Foaming composition for fire extinguishing contains, wt. %: sodium salts of alkyl sulphates fatty alcohols of fraction C-C–70.0–80.0, sodium salts of alpha-olefin sulphonate CHSONa, where n = 14 – 5.0–15.0, polyethylene glycol – 5.0–18.0 and citric acid – 0.1–0.3. Composition can additionally contain carbamide and a polymer complexing agent based on polycarboxylic acids, salts and esters thereof, for example, Acrylon AMK-10.EFFECT: foaming composition is characterized by high multiplicity and stability of foam, can be widely used for extinguishing class A and B fires, in transport, at enterprises of various industries, in solutions with working concentration of 1 % based on distilled, drinking, hard and sea water.4 cl, 2 tbl, 14 ex

Description

Technical field

The invention relates to the field of fire extinguishing, in particular, to the foaming compositions based on surface-active substances (surfactants), intended to extinguish fires of classes A and B, which can be used to prepare solutions with a working concentration of 1%, using distilled, drinking, hard and sea water.

The level of technology

Known foaming composition (US Pat. RU No. 2345809 IPC A62D, publ. 10.02.2009), containing the original components in the following ratio, wt.%: Triethanolamine salts of alkyl sulfates of the primary higher fatty alcohols fraction C ₈ -C ₁₄ 20.0-40.0 ; sodium sulfoethoxylates 10.0-22.0; sodium alkanesulfonates of the C ₁₂ -C ₁₆ fraction 10.0-15.0; polyethylene glycol 2,0-20,0: carbitol 2,0-6,0 and water - the rest.

However, this composition has insufficient stability and the multiplicity of the foam when used in the form of a working solution with low concentrations.

Also known foaming composition for extinguishing fires (US Pat. RU No. 2270712, IPC A62D 1/02, publ. 27.02.2006), allowing to obtain air-mechanical foam of low, medium and high multiplicity, which has a high wetting ability when used as fresh, and seawater and sodium alkyl sulfates of the primary higher fatty alcohols of the C ₈ -C ₁₀ fraction, sodium alkyl sulfates of the primary higher fatty alcohols of the C ₁₂ -C ₁₄ fraction, sodium sulfoethoxylates of the primary higher fatty alcohols of the C ₁₂ -C ₁₄ fraction, primary higher fatty alcohols of fracc C ₁₂ -C ₁₄ , carbamide, n-butyl alcohol, butyl cellosolve, neonol, oxanol and water with the following content of components, wt.%:

Sodium alkylsulfates primary higher fatty alcohols fraction C ₈ -C ₁₀ - 9.0 ÷ 20.0; Sodium alkylsulfates primary higher fatty alcohols fraction C ₁₂ -C ₁₄ - 3.0 ÷ 8.0; Sodium sulphoethoxylates of primary higher fatty alcohols of the C ₁₂ -C ₁₄ fraction - 4,0 ÷ 9,0; Primary higher fatty alcohols of the C ₁₂ -C ₁₄ fraction - 1,0 ÷ 3,0; Urea - 5.0 ÷ 15.0; n-butyl alcohol - 2,0 ÷ 7,0; Butyl celloslose - 2,0 ÷ 5,0; Neonol - 1,0 ÷ 3,0; Oksanol - 1,0 ÷ 3,0; Water - the rest.

The disadvantages of this composition can also be attributed to the lack of multiplicity and stability of the foam at various concentrations, and with a decrease in concentration, these figures drop sharply.

In addition, the disadvantage of the above technical solutions is the limited temperature storage conditions, which are in the range from -40 ° C to + 40 ° C, due to the presence of water in these compositions.

Known foaming composition for extinguishing fires (US Pat. RU No. 2491973, IPC A62D 1/0, publ. 10.09.2013) containing aerosol-forming substances, triethanolamine alkyl sulphate salt of primary fatty alcohols fraction C ₈ -C ₁₄ , polycarboxylate "Acremon", triethanolamine, carbamide, higher fatty alcohols of C ₉ -C ₁₁ fraction, ethoxylated sodium lauryl sulfate, gelatin and water, in the following ratio of components, wt.%:

aerosol-forming substances - 4.6-24.5; triethanolamine salt alkylsulfate primary fatty alcohols fraction C ₈ -C ₁₄ - 2.68-9.1; polycarboxylate "Acremon" - 0.89-3.2; triethanolamine - 0.56-3.1; urea - 1.27-4.52; higher fatty alcohols fraction With ₉ -C ₁₁ - 0.25-1.24; sodium lauryl sulfate oxyethylated - 2.04-3.2; gelatin - 0.4-1.84; water - 46.57-89.31.

The disadvantage of this, and other of the above compositions is the need to use them in the form of a working solution with a concentration of not less than 2, 6%, respectively, which leads to increased costs for the delivery of an increased amount of foaming agent for the preparation of the working solution, increasing labor costs associated with this. At the same time, when using the indicated compositions with a concentration in the working solution of 1%, the foam multiplicity and its stability indicators are rather low.

The closest to the claimed invention is a fire extinguishing composition for fire extinguishing (US Pat. RU # 2418611, IPC A62D 1/00, published on 05/20/2011), characterized by a wide temperature interval for the storage of fire extinguishing composition from minus 60 ° С to plus 60 ° С, reducing costs on transportation and storage, reducing the negative impact on the environment, as well as reducing the working concentration of fire extinguishing solution. The fire extinguishing composition contains a mixture consisting of 40-70% of the composition of the dissolution activator in water containing sulfamic acid and sodium bicarbonate, and 60-30% foaming mixture containing sodium salts of alkyl sulfates of fatty alcohols of the C ₈ -C ₁₀ fraction or their mixture with sodium Salts of alkyl sulfates of fatty alcohols of the C ₁₂ -C ₁₄ fraction or sodium salts of alpha-olefin sulfonates of the C ₁₄ -C ₁₆ fraction with the following content of components, wt.%:

sodium salts of alkyl sulfates of fatty alcohols fraction C ₈ -C ₁₄ - 25.5-60.0; sodium salt of alkyl sulfates of fatty alcohols fraction C ₁₂ -C ₁₄ or sodium salt of alpha-olefin sulfonates fraction With ₁₄ -C ₁₆ - 0.01-9.0; sulfamic acid - 16.0-31.5; sodium bicarbonate (baking soda) 22.0-42.0.

However, the composition of the foaming agent also has insufficient multiplicity and stability of the foam at low concentrations.

The disadvantages of the composition of the prototype can also include the duration of dissolution of powdered foaming agent in water, the need to use additional resources (different water tanks, etc.) and an increased level of labor associated with the use of this composition.

The main problem solved by the claimed invention is the creation of a foaming composition for fire extinguishing, having a high multiplicity and stability of the foam, as well as a high fire extinguishing ability with a low consumption volume.

The technical result achieved when using the claimed invention is to increase the multiplicity and stability of the foam.

When this is achieved the possibility of using water of any quality and temperature upon receipt of the working solution, and provides a long shelf life of the foaming composition.

The technical result of the claimed invention is achieved by the fact that the known fire extinguishing composition for fire extinguishing, including sodium salts of fatty alcohol alkyl sulfates and sodium salts of alpha-olefinsulfonate, is used as the sodium salts of fatty alcohol alkyl sulfates of the C ₉ -C ₁₁ alkyl sulfates, and in sodium salts of alpha-olefinsulfonate C _n H _2n SO ₃ Na were chosen as sodium salts of sodium alpha olefinsulphonate, where n = 14, while polyethylene glycol and citric acids were additionally introduced and in the following ratio of wt.%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 70.0-80.0; alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 5.0-15.0; polyethylene glycol - 5.0-18.0; lemon acid - 0.1-0.3.

Foaming composition for fire suppression may additionally contain urea in the amount of 2.0-5.0 in the following ratio of components, mass%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 70.0-80.0; alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 5.0-15.0; polyethylene glycol - 5.0-15.0; lemon acid - 0.1-0.3; urea - 2.0-0.3

The inventive composition for fire suppression may also additionally contain a polymeric complexing agent based on polycarboxylic acids, their salts and esters in the following ratio of components, mass%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 70.0-80.0; alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14,  - 5.0-15.0; polyethylene glycol - 5.0-15.0; lemon acid - 0.1-0.3; urea - 2.0-5.0; polymeric complexing agents based on polycarboxylic acids, their salts and esters - 1.0-2.0.

As a polymeric complexing agent based on polycarboxylic acids, their salts and esters, the inventive fire suppression composition may contain Acremon AMK-10.

Experimental studies of the claimed composition showed that when using sodium salts of fatty alcohol alkyl sulfates of the C ₉ -C ₁₁ fraction quantitatively, wt.% - 70.0-80.0 and alpha-olefin sulfonate C _n H _2n SO ₃ Na, where n = 14 in a quantitative ratio - 5.0-15.0, the multiplicity of foam composition for fire extinguishing increases and ranges from 90 to 100, and the stability of the foam - from 360 to 550 seconds. When using sodium salts of alkyl sulfates of fatty alcohols of the С ₉ -С ₁₁ fraction less than 70% and alpha-olefin sulfonate C _n H _2n SO ₃ Na, where n = 14 less than 5.0%, the foam multiplicity decreases below 90, and the foam stability is less than 360 s . When using sodium salts of alkyl sulfates of fatty alcohols of the C ₉ -C ₁₁ fraction more than 80% and alpha-olefin sulfonate C _n H _2n SO ₃ Na, where n = 14 more than 15.0%, a “solid film” is formed in the foaming agent during storage, which results to lower foam performance.

At the same time, sodium salts of alkyl sulfates of fatty alcohols of the С ₉ -С ₁₁ fraction are cheaper when used, which at the same time does not affect the reduction of the quality indicators of the composition for fire fighting.

The use in the invention of polyethylene glycol, which is an emulsifier, contributes to a more reliable mixing of components, which under normal conditions may not be mixed. In the claimed fire extinguishing mixture, polyethylene glycol ideally dissolves sodium alpha-olefin sulfonate, which results in good bonding and mixing in the foaming agent and, accordingly, leads to a higher resistance of the foaming composition during its storage. At the same time, as experiments have shown, with a decrease in the temperature of the working solution, polyethylene glycol affects the increase in the foam multiplicity. With a decrease in polyethylene glycol of less than 5% dissolution of alpha-olefin sulfonate C _n H _2n SO ₃ Na, where n = 14 is not completely. When increasing the amount of polyethylene glycol more than 18 mass%, the multiplicity and stability of the foam decrease due to a decrease in the number of active components in the claimed composition.

In addition, the presence of polyethylene glycol allows the use of water of any temperature for the preparation of the working solution. In the claimed invention, when preparing the working solution of the fire extinguishing composition, polyethylene glycol contributes to the instantaneous mixing of the components of the composition with water.

As it is known, sodium alpha-olefin sulfonate C _n H _2n SO ₃ Na, where n = 14 has an alkaline medium pH> 10, thus introducing citric acid into the foaming agent in an amount of 0.1-0.3% allows you to adjust the pH value of the claimed composition, which should be 6.5-8.5 in accordance with the requirement of GOST 50588-2012. With increasing pH above the upper indicator of the proposed range, there is a decrease in the multiplicity and stability of the foam. This pH range is neutral, ensures the safety of the foaming composition when exposed to people working with the foaming agent and affects its environmental friendliness. composition. With the introduction of citric acid less than 0.1%, the pH value equal to 8.5 is not reached, and with the introduction of more than 0.3%, the pH decreases below the index of the regulated GOST.

Additional introduction of urea eliminates stratification of the foaming composition during long-term storage and also during freezing and thawing. The use of a polymeric complexing agent, which is a water-polymer composite material based on polycarboxylic acids, their salts and esters of the brand, for example, Acremon AMK-10, allows to reduce water hardness with high efficiency (upon receipt of the working solution), which ensures a more stable foam even in high water stiffness, and contributes to the effectiveness of surfactants. At the same time, experimental studies have shown that with the introduction of Acremon AMK-10 in the case of preparing a working solution using hard water, an increase in the quality indicators of the solution occurs.

The inventive composition allows to obtain a working solution of the foaming agent, even on the basis of poor quality water and very hard water with low temperatures.

The inventive foamable composition is used mainly for the preparation of a working solution with a concentration of predominantly 1%, by dissolving it in water. Solutions with a higher concentration will be significantly more expensive and more time-consuming to manufacture. The resulting working solution is used to obtain foam using a standard system of foam generators.

Foaming composition for fire suppression can be implemented as follows.

In the mixing plant of periodic action, with water heating, sequentially load the calculated value of polyethylene glycol, sodium alpha-olefin sulfonate C _n H _2n SO ₃ Na, where n = 14, include heating of the jacket of the mixing plant, in the range from 30 to 60 ° C, mix to homogeneous state within 90 min. Next, the calculated value of the sodium salts of fatty alcohol alkyl sulfates of the C ₉ -C ₁₁ fraction and citric acid is introduced. The solution is stirred for 180 minutes and a sample is taken for analysis of qualitative indicators of the composition - the multiplicity and stability of the foam.

With the additional introduction of polycarboxylic acids, their salts and esters, for example, Acremon AMK-10, into the batching unit with water heating, sequentially load the calculated value of polyethylene glycol, sodium alpha-olefinsulfonate C _n H _2n SO ₃ Na, where n = 14, urea, include heating of the jacket of the mixing plant, in the range from 30 to 60 ° C, stirred until homogeneous for 90 minutes. Next, sodium salts of alkyl sulfates of fatty alcohols of the C ₉ -C ₁₁ fraction are introduced, Acremon AMK-10 polymer complexing agent and citric acid. The solution is stirred for 180 minutes and a sample is taken for analysis of pH, frequency and stability of the foam.

The determination of the multiplicity and the index of stability of the foam of the average multiplicity (according to GOST, comprising 60-200) in one of the preferred implementation options was carried out as follows. The essence of the method of determining these indicators is to measure the mass before and after filling the foam collection tank with foam, then calculating the foam multiplicity and determining its stability index.

To determine the multiplicity and the indicator of the stability of low and medium expansion foam, the installation was used, the kit of which includes:

- foam generator of medium multiplicity HPS-100 with a sprayer with a diameter of 8.1 mm, allowing to provide a volumetric flow rate of the solution (1.0 ± 0.1) dm / s at a pressure on the barrel (0.60 ± 0.01) MPa .;

- water pump, providing a volume flow rate of 0.16-1.10 dm / s at a pressure on the barrel (0.58 ± 0.03) MPa;

- a cylindrical metal tank for collecting foam, with a capacity of (200 ± 1) dm, weighing no more than 12 kg, with a hole with a diameter (40 ± 5) mm in the center of the bottom of the tank for the expiration of the working solution. The ratio of the height of the tank to its diameter is 1.5;

- scales with a measurement limit of no more than 50 kg and a measurement error of no more than 0.05 kg;

- pressure gauge according to GOST 2405 with an upper measurement limit of 1.00 MPa and a division value of 0.040 MPa, installed at the outlet of the pump;

- thermometer according to GOST 28498 with a measurement range of 0 ° C - 100 ° C and a scale value of 1 ° C;

- stopwatch with a measurement limit of 60 minutes and a dividing price of 0.2 s;

- dimensional container for the preparation of the working solution of the foaming agent with a capacity of 100-110 dm ³ ;

Preparing to test the working solution of the foaming composition to test the multiplicity and stability of the foam was carried out as follows.

A working solution was prepared in which the blowing agent for fire extinguishing was 1 kg per 100 kg of working solution. The composition was tested in accordance with the requirements of GOST R 50588-2012 “Foaming agents for extinguishing fires. General technical requirements and test methods".

Tested the performance of the pumping unit. The mass of the empty foam collection vessel was measured. Before each determination, the temperature of the working solution of the foaming agent was measured, which should be (20 ± 2) ° C.

To determine the multiplicity of medium expansion foam, the prepared working solution was fed under pressure (0.60 ± 0.01) MPa into the pressure hose, at the output of which the GPS-100 generator was installed. The hole at the bottom of the tank was closed. After receiving a steady stream of foam filled with foam tank to collect the foam and weighed it. It was controlled so that the filling of the entire volume of the tank was uniform, without the formation of voids. Determined the mass of the foam as the difference of the masses of the filled and empty containers. The hole at the bottom of the tank was opened for the expiration of the solution.

The multiplicity of the foam was calculated by the formula:

where V _p - the volume of foam, dm;

V _p - the volume of the foaming solution, dm.

The index of the stability of the foam of average frequency was defined as the time of separation from the foam 50% by weight of the solution.

With a positive result of the analysis in terms of pH, frequency and stability in the testing laboratory, the stirrer was turned off and packing was carried out. At the same time, the heating of the installation jacket was stopped, the shut-off valves were opened, the pump was turned on and the shut-off valves were opened at the outlet from the installation. At the end of the product transfer, the pump was turned off and shut-off valves were shut off at the process lines.

The inventive foamable composition was prepared with various declared quantitative combinations of the components. Its specific implementation is illustrated below in the following examples.

Example 1

In the mixing plant of periodic action, with water heating, sequentially loaded the calculated value in mass%:

polyethylene glycol - 18.0; sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14, - 11.8

and included heating the jacket of the mixing unit, in the range from 30 to 60 ° C, stirred until homogeneous for 90 minutes. Then, the calculated value was introduced in the amount of mass%: sodium salts of fatty alcohol alkyl sulfates of the C ₉ -C ₁₁ fraction in the amount of 70.0 and citric acid - 0.2.

The resulting solution was stirred for 180 minutes and a sample was taken for analysis of qualitative indicators of the composition - the multiplicity and stability of the foam.

In the testing laboratory, the pH of the foaming agent, the multiplicity of the foam and its stability were determined in accordance with the above method for determining these indicators in accordance with the requirements of GOST. Conducted analysis of the working solution on the basis of the foaming composition with these components, the results of which established: pH - 7.0, foam multiplicity - 92, and stability - 375 seconds.

Example 2

Received foaming composition according to the method and technology, as in example 1, with the components of the composition in quantity, wt.%:

sodium salts of alkyl sulfates of fatty alcohols fraction C9-C11 - 75.0; sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 11.8; polyethylene glycol - 13.0; lemon acid - 0,2.

According to the analysis of the working solution based on the foaming composition with the specified components, its pH was 7.1, the foam multiplicity was 100, and the stability was 399 seconds.

Example 3

Received foaming composition similarly to example 1, with the components of the composition in quantity, wt.%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 80.0, sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 11.8; polyethylene glycol - 8.0; lemon acid - 0,2.

According to the analysis of the working solution based on the foaming composition with the specified components, its pH was 7.3, the foam multiplicity was 98, and the stability was 418 seconds.

Example 4

Received foamable composition according to the method and technology specified in example 1, with the components of the composition in quantity, wt.%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 76.8; sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 5.0; polyethylene glycol - 18.0; lemon acid - 0,2.

According to the analysis of the working solution based on the foaming composition, its pH was 6.8, the foam multiplicity was 97, and the stability was 330 s.

Example 5

Received foaming composition of the following composition according to the specified technology with components in an amount, wt.%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 76.8; sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 10.0; polyethylene glycol - 13.0; lemon acid - 0,2.

According to the analysis of the working solution based on the foaming composition, its pH was 7.2, the foam multiplicity was 98, and the stability was 401 sec.

Example 6

Received foaming composition similarly to example 1, with the components of the composition in quantity, wt.%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 76.8; sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 15.0; polyethylene glycol - 8.0; lemon acid - 0,2.

According to the analysis of the working solution based on the foaming composition, its pH was 7.7, the foam multiplicity was 97, and the stability was 457 s.

Example 7

Received foaming composition according to the method and technology specified in example 1, with the components of the composition in the amount of wt.%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 75.0, sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 8.5; polyethylene glycol - 16.4; lemon acid - 0.1.

According to the analysis of the working solution based on the foaming composition with the specified components, its pH was 8.3, the foam multiplicity was 100, and the stability was 385 seconds.

Example 8

Received foamable composition according to the method and technology specified in example 1, with the components of the composition in quantity, wt.%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 75.0; sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 8.5; polyethylene glycol - 16.2; lemon acid - 0.3.

According to the analysis of the working solution based on the foaming composition with the specified components, its pH was 6.5, the foam multiplicity was 100, and the stability was 385 seconds.

Example 9

Received foaming composition of the following composition according to the specified technology with components in an amount, wt.%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 75.0; sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 8.5; polyethylene glycol - 14.3; urea - 2.0; lemon acid - 0,2.

According to the analysis of the working solution based on the foaming composition with these components, its pH was 7.1, the foam multiplicity was 99, and the stability was 387 seconds.

Example 10

Received foaming composition of the following composition according to the specified technology with components in an amount, wt.%:

Sodium salts of alkyl sulfates of fatty alcohols of C ₉ -C ₁₁ fraction - 75.0, sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 8.5, polyethylene glycol - 11.3, urea - 5.0; lemon acid 0.2.

According to the analyzes performed, the pH was 7.0, the foam multiplicity was 101, and the stability was 386 seconds.

Example 11

Received foaming composition of the following composition according to the specified technology with components in the amount of wt.%:

Sodium salts of alkyl sulfates of fatty alcohols of C ₉ -C ₁₁ fraction - 75.0; sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 8.5; polyethylene glycol - 12.3; urea - 3.0; polymer complexing agent Acremon AMK-10 - 1.0; lemon acid - 0,2.

According to the analyzes carried out, the pH was 7.3, the foam multiplicity was 100, and the stability was 385 seconds.

Example 12

Received foaming composition of the following composition according to the specified technology with components in an amount, wt.%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 75.0; sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 8.5; polyethylene glycol - 11.3; urea - 3.0; polymer complexing agent Acremon AMK-10 - 2.0; lemon acid 0.2.

According to the analysis, the pH was 7.2, the foam multiplicity was 102, and the stability was 388 seconds.

Example 13

Received foaming composition of the following composition according to the specified technology with components in the amount of wt.%:

sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ - 75.0; Sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 8.5; Polyethylene glycol - 16.3; Lemon acid - 0,2.

In the testing laboratory, pH values, foam multiplicity and its stability were established at different temperatures of the working solution. To prepare the working solution was used drinking and hard water. The test results are shown in table 2.

Example 14

Received foaming composition of the following composition according to the specified technology with components in an amount, wt.%:

Sodium salts of alkyl sulfates of fatty alcohols of C ₉ -C ₁₁ fraction - 75.0; sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 - 8.5; polyethylene glycol - 11.8; urea - 3.0; polymer complexing agent Acremon AMK-10 - 1.5; lemon acid - 0,2.

In the testing laboratory, pH values, foam multiplicity and its stability were established at different temperatures of the working solution. The test results are shown in table 2.

Table 1 shows the indicators of the multiplicity and stability of the foam of the various compositions of the claimed invention, shown in examples 1-12, in comparison with the composition of the prototype, the quality indicators of which are given in the description of the patent (selected average value).

The test results are shown in table 1:

The test results, according to the claimed compositions shown in examples 13 and 14 in the preparation of working solutions that used drinking and hard water with different temperatures are shown in table 2.

The inventive foaming fire extinguishing composition with high multiplicity and foam stability can be widely used to extinguish Class A and B fires, in transport, at enterprises of various industries, most optimally in solutions with a working concentration of 1%, based on distilled, drinking, hard and sea water.

Claims (7)

1. Foaming composition for fire extinguishing, including sodium salts of fatty alcohol alkyl sulphates and sodium salts of alpha-olefin sulfonate, characterized in that polyethylene glycol and citric acid are additionally introduced into it, as sodium salts of fatty alcohol alkyl sulphates it contains sodium salts of fatty alcohol alkyl sulphates of fraction ₂ -C ₁₁ , and as the sodium salt of alpha-olefin sulfonate contains sodium alpha-olefin sulfonate C _n H _2n SO ₃ Na, where n = 14, with the following content of components, wt.%: sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ 70.0-80.0 sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 5.0-15.0 polyethylene glycol 5.0-18.0 lemon acid 0.1-0.3 2. Foaming composition for fire extinguishing under item 1, characterized in that it additionally contains urea in the following ratio of components, wt.%: sodium salt of alkyl sulfates of fatty alcohols fraction ₉ -C ₁₁ 70.0-80.0 sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 5.0-15.0 polyethylene glycol 5.0-15.0 urea 2.0-5.0 lemon acid 0.1-0.3 3. Foaming composition for fire extinguishing under item 2, characterized in that it additionally contains a polymer complexing agents based on polycarboxylic acids, their salts and esters in the following ratio, wt.%: sodium salt of alkyl sulfates of fatty alcohols fraction C ₉ -C ₁₁ 70.0-80.0 sodium alpha olefinsulfonate C _n H _2n SO ₃ Na, where n = 14 5.0-15.0 polyethylene glycol- 5.0-15.0 urea 2.0-5.0 polymeric complexing agents based on polycarboxylic acids, their salts and esters 1.0-2.0 lemon acid 0.1-0.3 4. Foaming composition for fire extinguishing under item 3, characterized in that it contains Acremon AMK-10 as a polymeric complexing agent based on polycarboxylic acids, their salts and esters.