Water-mist fire extinguishing additive, and preparation method and application thereof

A technology of fine water mist and additives, applied to fire prevention equipment, etc., can solve the problems of single agent composition and insignificant increase in fire extinguishing efficiency, and achieve the effects of reducing oxygen concentration, shortening fire extinguishing time, and improving fire extinguishing efficiency

Inactive Publication Date: 2018-08-21
应急管理部四川消防研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing fire extinguishing additives have a single agent composition, most of which are single inorganic salt agents such as potassium carbonate, potassium acetate, water-soluble surfactants and other components, and their fire extinguishing efficiency does not increase significantly in the process of water mist fire extinguishing

Method used

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  • Water-mist fire extinguishing additive, and preparation method and application thereof
  • Water-mist fire extinguishing additive, and preparation method and application thereof
  • Water-mist fire extinguishing additive, and preparation method and application thereof

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preparation example Construction

[0024] The present invention also provides a preparation method for the above-mentioned fine water mist fire extinguishing additive, comprising the following steps:

[0025] Ammonium chloride, ammonium bicarbonate, ammonium carbonate, potassium bicarbonate, potassium carbonate, diammonium hydrogen phosphate, sodium tungstate, ammonium tungstate and water are mixed according to the stated parts by weight to obtain a fine water mist fire extinguishing additive.

[0026] In the present invention, there is no special limitation on the order of adding the components, and the order of addition known to those skilled in the art can be selected.

[0027] The present invention has no special limitation on the mixing method, and the mixing method well-known to those skilled in the art can be selected so that each component can be uniformly dissolved in water.

[0028] The present invention also provides the application of the above-mentioned fine water mist fire extinguishing additive i...

Embodiment 1

[0032] Add 10 parts of ammonium chloride, 2 parts of sodium bicarbonate, 3 parts of sodium carbonate, 1 part of potassium bicarbonate, 5 parts of potassium carbonate, 8 parts of ammonium dihydrogen phosphate, and 6 parts of sodium tungstate to 100 parts of water, and stir until it dissolves Water mist fire extinguishing additive, the additive is mixed with water to obtain a fine water mist fire extinguishing agent, the volume fraction of the additive in the water mist fire extinguishing agent is 6%, and the fine water mist fire extinguishing agent is injected into the mobile fine water mist fire extinguishing equipment, extinguishing 34B And in the 55B oil pan fire experiment, the time was reduced from 1 minute to less than 30 seconds.

Embodiment 2

[0034] Add 8 parts of ammonium chloride, 1 part of sodium bicarbonate, 1 part of sodium carbonate, 4 parts of potassium bicarbonate, 8 parts of potassium carbonate, 10 parts of ammonium dihydrogen phosphate, 1 part of sodium tungstate, and 3 parts of ammonium tungstate to 100 parts of water Stir evenly until the fine water mist fire extinguishing additive is dissolved, mix the additive and water at a volume ratio of 1:1 to obtain a fine water mist fire extinguishing agent, add it to a 2 kg portable water-based fire extinguisher, and extinguish the 34B oil pan fire experiment. The time is about 20s.

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Abstract

The invention provides a water-mist fire extinguishing additive, and belongs to the technical field of firefighting. Multiple inorganic salts are adopted, mutual replacement reaction degrees are controlled through limitation on addition proportions of the inorganic salts, release of inertia gases, such as ammonia gases and carbon dioxide, of drugs in a fire scene is promoted, and the oxygen concentration of the fire scene is sufficiently reduced to achieve physical smothering and fire-extinguishing effect. Element substances such as sodium, chlorine and potassium in the additive generate freeradicals for resisting flames in the fire scene, and accordingly, chemical fire-extinguishing effect is achieved. Inorganic salt covering layers can form on the surfaces of solid substances through phosphates, and the obvious fire-extinguishing effect on type-A fire hazards of solids can be achieved. Tungstate is added as a catalyst to promote mutual reactions among additives. The fire extinguishing additive is applied to a water-mist fire extinguishing system, and can remarkably improve fire extinguishing efficiency and shorten fire extinguishing time.

Description

technical field [0001] The invention relates to the technical field of fire protection, in particular to a fine water mist fire extinguishing additive and its preparation method and application. Background technique [0002] Pure water mist fire extinguishing belongs to physical fire extinguishing, mainly relying on cooling, suffocation, kinetic action and additional effects of water mist. Among them, the dynamic effect refers to the elongation of the flame by the fine water mist and the large change in the air movement in the combustion chamber; the additional effect refers to the washing effect of the fine water mist on the smoke and exhaust gas. The burning ash and soot particles are bonded with the fine water mist droplets to be scrubbed. Although this effect does not directly extinguish the fire, it has a positive effect on fire extinguishing. The research on the principle and technology of multi-component water mist fire extinguishing, especially the research on water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/06
CPCA62D1/0035A62D1/06
Inventor 李平立葛欣国张翔尹朝露黄浩
Owner 应急管理部四川消防研究所
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