Water-based fire extinguishing agent for extinguishing gasoline-type fire

Abstract

The invention relates to a water-based fire extinguishing agent for extinguishing a gasoline-type fire and further provides a preparation method of the fire extinguishing agent. The formula of the water-based fire extinguishing agent comprises 1%-3% of nonionic surfactants, 5%-15% of one or two of KBr or NaBr, 0.1%-0.5% of EDTA disodium and the balance CO2 water solution. The preparation method ofthe fire extinguishing agent comprises the following steps that by mass, the nonionic surfactants, one or two of the KBr or the NaBr and the EDTA disodium are weighed; and firstly, the EDTA disodiumis dissolved into water and stirred, then the nonionic surfactants, and one or two of the KBr or the NaBr are dissolved into the water to prepare the water solution, then 0.5-2 MPa of CO2 gas is applied to the solution in an airtight condition, still standing is conducted for more than 1 h, and the fire extinguishing agent is obtained. According to the fire extinguishing agent, the fire extinguishing efficiency on gasoline can be greatly improved.

Description

technical field [0001] The invention relates to a fire extinguishing agent, in particular to a water-based fire extinguishing agent for extinguishing gasoline fires. Background technique [0002] As the halon series of fire extinguishing agents were found to be ozone depleting and harmful to the environment, the research on water mist fire extinguishing technology has sprung up like mushrooms after rain. Water mist fire extinguishing agent is better applied in some A class fires (solid fires), but the fire extinguishing efficiency of water mist for B class fires (liquid fires) is not good. At present, for Class B fires, foam fire extinguishing agent is the mainstream fire extinguishing agent. But foam fire extinguishing agent has a shortcoming equally, needs full coverage to extinguish the fire, for three-dimensional fire, as promptly has liquid pool fire, has three-dimensional solid fire again, there is coverage difficulty, promptly fire extinguishing difficulty. And wate...

AI Technical Summary

Problems solved by technology

This effect is significant for Class A fires, but for Class B fires, taking gasoline as an example, because gasoline volatilizes quickly in the fire scene, gasoline vapor has low ignition energy, flash point, and spontaneous ignition point, and large heat release. Suppression capacity is often insufficient to meet fire suppression needs

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