High-performance environment-friendly aqueous film-forming foam extinguishing agent

An environment-friendly foam fire extinguishing agent technology, applied in fire prevention equipment, etc., can solve the problems of water film-forming foam fire extinguishing agent performance degradation, hazards, production and use restrictions, etc., to achieve excellent fire extinguishing performance, long storage period, fire extinguishing high efficiency effect

Active Publication Date: 2019-12-03
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because PFOS and its salts are highly harmful to the environment, they are included in the ranks of persistent organic pollutants (POPs) by the Stockholm Convention, and their production and use are strictly restricted.
The restricted use of PFOS and its salts has led to a significant decline in the performance of aqueous film-forming foam fire extinguishing agents

Method used

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  • High-performance environment-friendly aqueous film-forming foam extinguishing agent
  • High-performance environment-friendly aqueous film-forming foam extinguishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Weigh FS-51 3kg, AS-40 3kg, oligomeric D-glucopyranose 5kg, Dow Corning 502W6kg, tetraglyme 10kg, sodium diamine tetramethylene phosphate 4kg, O-benzene Base phenol 0.2kg and water 70kg are slowly added in the reactor, start stirring, stirring speed 600 rpm.

[0052] (2) After the sample is dissolved, weigh 0.5 kg of locust bean gum again and add it to the reaction kettle, and continue to stir for 2 hours.

[0053] (3) Slowly add water to 100kg in the reaction kettle, and fully stir to obtain a high-performance environment-friendly aqueous film-forming foam fire extinguishing agent.

Embodiment 2

[0055] (1) Weigh FS-51 2kg, FS-60 3kg, polyethylene glycol p-isooctyl phenyl ether 5kg, Dow Corning502W 4kg, butyl carbitol 10kg, tetrasodium iminodisuccinate 4kg, bis 0.2kg of sodium biacetate and 70kg of water are slowly added to the reaction kettle, and the stirring is started at a stirring speed of 600 rpm.

[0056] (2) After the sample is dissolved, weigh again 0.2 kg of locust bean gum and 0.2 kg of linseed gum and add them into the reaction kettle, and continue to stir for 2 hours.

[0057] (3) Slowly add water to 100kg in the reaction kettle, and fully stir to obtain a high-performance environment-friendly aqueous film-forming foam fire extinguishing agent.

Embodiment 3

[0059] (1) Weigh 2kg of S-111, 3kg of FS-51, 2kg of polyethylene glycol p-isooctylphenyl ether, 4kg of oligomeric D-glucopyranose, 3kg of Dow Corning 502W, and 5kg of butyl carbitol , 5 kg of tetraglyme, 4 kg of tetrasodium iminodisuccinate, 0.2 kg of sodium biacetate and 70 kg of water were slowly added to the reaction kettle, and the stirring was started at a stirring speed of 600 rpm.

[0060] (2) After the sample is dissolved, weigh again 0.1 kg of locust bean gum and 0.3 kg of 6-deoxy-L-galactose into the reaction kettle, and continue to stir for 2 hours.

[0061] (3) Slowly add water to 100kg in the reaction kettle, and fully stir to obtain a high-performance environment-friendly aqueous film-forming foam fire extinguishing agent.

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Abstract

The invention provides a high-performance environment-friendly aqueous film-forming foam extinguishing agent which comprises the following components in percentage by weight: 3-6% of a fluorine-containing surfactant, 3-20% of a carbon hydrogen surfactant, 3-6% of an organosilicon surfactant, 0.1-4% of plant polysaccharides, 8-20% of a solubilizer, 0.1-4% of an ion complexing agent, 0.1-2% of an antibacterial agent and the balance of water. Under interactions of the components of the contents, the extinguishing agent has an excellent fire extinguishing function and is good in foam performance,high in fire extinguishing efficiency, rapid in fire extinguishing speed, good in after-combustion prevention and sealing performance, long in preservation life, easy in raw material obtaining, environment-friendly and easy in biodegradation, free of PFOS (perfluorooctane sulfonates) or salts thereof, and free of environment pollution; and under a condition that the foam expansion rate is 7.3-8.1,the 25% drainage time of the extinguishing agent is 3.4-4.1 minutes, the fire extinguishing time (compulsive application) is 35-47 seconds, and the burning resistance time (compulsive application) is13.1-17.4 minutes.

Description

technical field [0001] The invention belongs to the technical field of fire extinguishing agents, in particular to a high-performance and environment-friendly aqueous film-forming foam fire extinguishing agent. Background technique [0002] Aqueous film-forming foam fire extinguishing agent, also known as "light water" foam fire extinguishing agent, refers to a fire extinguishing agent that can form a layer of water film on the surface of fuel during fire extinguishing. The water film can not only isolate the fuel surface from contact with oxygen, but also cool the fuel surface; at the same time, the liquid precipitated in the foam evaporates into water vapor at high temperature, diluting the oxygen concentration above the flammable liquid. Due to the synergistic fire extinguishing effect of water film and foam, aqueous film-forming foam is especially suitable for large-scale flammable liquid fires, and it is widely used in areas such as large ships, offshore oil and gas dri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/02
CPCA62D1/0064A62D1/0085
Inventor 余潇阳姜宁李凡宗若雯陆守香
Owner UNIV OF SCI & TECH OF CHINA
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