Composite additive for water mist fire suppression and preparation method and application method thereof

Abstract

The invention discloses a composite additive for water mist fire suppression. The composite additive comprises 1 wt% to 5 wt% of ferrous lactate, 2 wt% to 30 wt% of sylvite, 2 wt% to 30 wt% of phosphate and the balance water. The preparation method of the composite additive comprises the step that the ferrous lactate, the sylvite and the phosphate are sequentially dissolved into the water to obtain the composite additive. The application method of the composite additive comprises the steps that the composite additive and water are diluted according to the proportion of 1:2-1:30; and then a water mist generator is filled with the diluted solution which is sprayed to a fireground for fire extinction. The ferrous lactate, the sylvite and the phosphate in the composite additive have a good synergistic flame retardant effect, so that the fire extinction time is greatly shortened, and the fire extinction and inflaming retarding performance is more excellent.

Description

technical field [0001] The invention relates to a fire extinguishing agent, in particular to a composite additive for fine water mist fire extinguishing, a preparation method and a use method thereof. Background technique [0002] Water mist fire extinguishing technology is a new high-efficiency fire extinguishing technology, which atomizes water into fine water mist particles with a diameter of less than 400 mm, which improves the fire extinguishing efficiency of water. Water mist fire extinguishing technology mainly relies on physical fire extinguishing, and improves the fire extinguishing efficiency of water by reducing the size of water droplets. Compared with the traditional water spray fire extinguishing technology, the evaporation speed of fine water mist is faster, the evaporation efficiency is higher, and the latent heat of vaporization absorbed during the evaporation process is greater, which can effectively cool the combustion reaction, speed up the fire extinguis...

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Problems solved by technology

Among them, organic compounds of Fe and Mn (Fe(CO)5, Fe(C5H5)2 and C5H4CH3Mn(CO)3) have excellent flame retardant effects, However, it is highly toxic and not suitable for application; although the toxicity of inorganic compounds (FeCl2 and FeCl3) in transition metal salts is small, it must be used under strong acidity. It can exist stably (for example, 0.1mol / L FeCl3 starts to precipitate when pH = 2.3, and the precipitation is completed when pH = 4.1), which requires high equipment and is not conducive to popularization and application.