SU1373406A1 - Fire-fighting composition and method of preparation thereof - Google Patents

Abstract

The invention relates to the field of fire extinguishing, namely fire extinguishing compositions and methods for their preparation. The invention makes it possible to increase the fire-extinguishing efficiency and improve the foaming properties of the composition. The method of its preparation allows to increase the aggregative stability of the composition and simplify the technology. The composition includes the following components, wt%: a foaming agent, 2.0-56.0; halohydrocarbon 0.5-34.0; nonionic surfactant. Neonol 0.1-2.6; and water - the rest (up to 100%). For the purpose of visual control, the composition contains a colorimetric indicator - methyl orange in an amount of 0.1-0.01 wt.%. For the preparation of the composition, the non-ionic surfactant is dissolved in galsidocarbon, the resulting solution is mixed with a concentrated solution of the foaming agent, and then diluted with water to obtain a clear solution. The mass ratio of the blowing agent and the halocarbon should be more than 1.6. Fire extinguishing efficiency is estimated by quenching time, which is reduced to 38 s when quenching with low-expansion foam. 2c. and 2 hp f-ly, 2 tab. § (L lAd co. (I

Description

The invention relates to fire suppression, in particular to an extinguishing composition, which is an emulsion of halocarbons and water, and the method of its preparation.

The purpose of the invention is to increase the fire extinguishing efficiency and improve the foaming properties, as well as increase the aggregate stability of the compositions and simplify the technology in the method of preparation of the composition.

Example 1. Fire extinguishing composition composition, wt.%: The foaming agent 6.0; halohydrocarbon 3,5; non-ionic surfactant 1 ;, water, the rest (65 g of POEN-DAI frother, 35 g of halon halide hydrocarbon 114B2, 10 g of neonol and 890 g of water) were prepared as follows.

A weighed portion of refrigerant 114B2 and neonol were mixed until a homogeneous mixture was formed. Then, with a little stirring, this mixture was poured into 65 g of a frother and, after homogenization, the mixture was diluted with 890 g of water. The solution obtained in this way was subjected to a centrifuge test for 3 minutes, the visual control and evaluation of the foaming ability on models of foam generators of medium fold and high fold foam.

Example 2. The fire extinguishing composition has a composition, wt.%: Foaming agent 6.3; halohydrocarbon 3,5; neonol 0.1; water the rest (up to 100%). Prepared according to example 1.

Example 3. The fire extinguishing composition has a composition, wt.%: A foaming agent 6.0; halohydrocarbon 3,5; neonol 2.6; water the rest (up to 100%).

EXAMPLE 4: The fire extinguishing composition has a composition, in wt%: foaming agent 2.0; halogen hydrocarbon 0.5; neonol 0.1; water the rest (up to 100%). The preparation techniques are the same as in example 1.

Example 5. Fire extinguishing composition has a composition, wt.%: A foaming agent 56.0; halohydrocarbon 34.0; neonol 2.6; water the rest. The preparation technology is as in Example 1.

Example 6. The fire extinguishing composition has a composition, wt.%: A foaming agent 1.0; halohydrocarbon 0.25; neonol 0.05; water the rest.

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The preparation technology is as in Example 1.

Example 7. The fire extinguishing composition has a composition, wt.%: A foaming agent 58.0; halohydrocarbon 36.0; neonol 3.0; water 3.0. The preparation technology is as in Example 1.

Example 8. The fire extinguishing composition has the same composition as in example 5, in addition, 0.1 wt.% Colorimetric indicator.

The components are the same as in Example I. Methyl orange dye was used as a colorimetric indicator. The composition was prepared as follows. The foaming agent was mixed with water and with stirring, the halohydrocarbon, the dye and the neonol were successively added to the mixture. An example clarifies the need for the order of operations.

Example 9. The fire extinguishing composition has a composition, wt.%: Foaming agent 10; halohydrocarbon 6; neonol 1; water the rest. The technology of preparation was as follows. Initially, weighed amounts of neonol with a halocarbon (chladone) and a blowing agent with water. The mixture of freon and neonol was slowly poured into the frother solution. The example clarifies the need for ordering a mixture of a refrigerant and a non-ionic surfactant with a foaming agent.

Example 10. The fire extinguishing composition has the composition, wt.%: The foaming agent 10; halogen hydrocarbon 8; neonol 2; water the rest. Cooking techniques are as in Examples 1-7.

Characteristics of the compositions are given in Table 1, both in Examples 1-7, and depending on other compositions of the blowing agent, halohydrocarbon and their ratio.

The fire extinguishing efficiency of a low-expansion foam obtained from such solutions by extinguishing oil products by the surface method is not inferior to the average foam obtained from solutions that do not contain a halocarbon.

Table 2 shows the comparative characteristics of the compositions according to fire extinguishing efficiency, which is expressed by the quenching time of the low-expansion foam.

The proposed composition and method of its production is simple and does not require special equipment, which allows to easily obtain fire extinguishing agents with high efficiency. The composition can be used in existing fire extinguishing systems. The cost of its optimal composition as compared with the prototype is 3-4 times less due to a reduction in the concentration of the main most expensive component.

The most promising is the proposed composition for local extinguishing in ship conditions and where it is important to combine high efficiency and the need to supply fire extinguishing agents over long distances.

Claims (4)

1. Fire extinguishing composition, including foaming agent, liquid halohydrocarbon and water, characterized in that, in order to increase fire extinguishing efficiency and improve foaming properties, it additionally contains a non-ionic surfactant - neo-yole, in the following ratio of components , wt.%: Frother 2,0-56,0 Halocarbon 0,5-34,0 Q five 0 five Q five Non-ionic surfactant - neonol 0.1-2.6 Water Else 2. The composition according to claim 1, that is, that in order to visually monitor its suitability, it additionally contains a colorimetric indicator - methyl orange, with the following ratio of components, wt.%: Frother 2,0-56,0 Halohydrocarbon 0.5-34.0 Non-ionic surfactant - neonol 0.1-2.6 Colorimetric indicator - methyl orange 0.1-0.01 Water Others 3. A method of preparing an extinguishing composition by mixing the components, characterized in that, in order to increase the aggregative stability of the composition and simplify the technology, the non-ionic surfactant is dissolved in the haphoidocarbon, the mixed solution is mixed with a concentrated foam former solution dilute the mixture with water until a clear solution is obtained. 4. The method according to claim 3, characterized in that the mass ratio of the blowing agent and the halocarbon should be more than 1.6. oh oh ON About CM f vO r "ABOUT "about 01 about U 01 04 о с 0) Z t- о tf C | to En and 01 OK HI i l and 0) about a oh oh but: - § oo but) EU s about (M m " sh see you st Yu - with th see f about y about  R about vO  with I (U " 5S SeS Well c (d H CO (U (U a 0) and to oh oh ON About vO 00 in r Oh v r - and V  S I V about and and Id S Oi X § X o 0) VO " sch about About 0) X about about sh X about S a b (ABOUT in I go see u go hch Yu in about cm Yu - about with about vO t i TO t § r in with § go sh vO 13 373406 14 I