The method of obtaining fire extinguishing mixture

 

(57) Abstract:

Usage: fire fighting equipment. The invention consists in the simultaneous combustion of two charges, one of which has a stoichiometric ratio of the oxidant and reductant, and the other is non-stoichiometric ratio of the same components with equity , the actual ratio of the number of moles of oxygen [O2] in the composition of the oxidant to pray reductant (fuel) [G], is the stoichiometric ratio of moles of oxygen [O2] in the composition of the oxidant to pray reductant (fuel [G]. The ratio of the masses of the first and second charges is 4:1. Combustion of the first and second charges is formed extinguishing mixture, providing extinguishing class a and b, including subclass AND1.

The invention relates to volume extinguishing of fires.

Known methods for producing fire extinguishing mixture, which consists in burning charge of solid fuel composition (IDT) that includes an oxidizing agent, a reducing agent (fuel) and the filler. TTC used in the known methods, as a rule, are characterized by a stoichiometric or near-stoichiometric the AI fires class b (flammable liquids) and subclass AND2(solid netaudio materials: rubber, rubber, plastic, etc).

However, the known methods have a significant drawback: by these methods cannot be extinguished fires subclass AND1(glowing solid materials such as wood, paper, textiles, etc., available in almost every room or building).

The invention is aimed at providing reliable fire extinguishing class a and b, including subclass AND1.

This is achieved in that in the method, which consists in burning charge of solid fuel composition containing the oxidizing agent and the reducing agent according to the invention and unlike the prototype, the combustion is subjected simultaneously to two charges, one of which has a stoichiometric ratio of the oxidant and reductant, and other non-stoichiometric ratio of the same components with the following breakdown:

,

where the actual ratio of the number of moles of oxygen [O2] in the composition of the oxidant to pray reductant (fuel) [G]

the stoichiometric ratio of moles of oxygen [O2] in the composition of the oxidant to pray reductant (fuel) [G] when the mass ratio of the first and second charges faced obtained by the proposed method, acquires the ability to simmer along with flammable liquids, solids nucleosome materials, gases and equipment under tension and also solid smoldering materials. This effect is mainly due to the combustion of the charge, which is characterized by a non-stoichiometric ratio of the oxidant and reductant.

Add in the combustion process of the second charge with the stoichiometric ratio of the same components (oxidant and reductant) allows us to influence the rate of combustion of the first charge. The mass ratio of the charges with stoichiometric and non-stoichiometric mixing ratio 4:1 optimum burning rate (0.6-0.8 mm/s) and, accordingly, the optimal degree of intensity of receipt of the fire extinguishing mixture, allowing to achieve the highest fire extinguishing ability of the mixture. This effect is seen only when the joint simultaneous burning of charges made from these compositions TTC and not observed during the combustion of the charge, representing a mixture of compounds of the first and second charges.

The method of obtaining fire extinguishing mixture, which consists in burning charge of solid fuel composition containing the oxidizing agent and geometricheskoe ratio of oxidant and reductant, and other non-stoichiometric ratio of the same components corresponding to the equality

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where the actual ratio of the number of moles of oxygen [O2] in the composition of the oxidizing agent to 1 mol of the reducing agent-fuel [g]

the stoichiometric ratio of moles of oxygen [O2] in the composition of the oxidizing agent to 1 mol of the reducing agent-fuel [g]

the mass ratio of the first and second charges 4 1.

 

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