Novel ABC dry powder fire-extinguishing agent and its making method

A dry powder fire extinguishing agent, a new type of technology, applied in fire prevention equipment, etc., can solve the problems of insufficient ammonium dihydrogen phosphate extinguishing ability to extinguish open fire, large amount of crops, increased cost of fire extinguishing agent materials, etc., to reduce material costs and social benefits The effect of large and large economic benefits

Inactive Publication Date: 2013-07-17
关宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ammonium dihydrogen phosphate has the effect of extinguishing class A, B, and C fires through the effects of these two aspects, but ammonium dihydrogen phosphate mainly has two defects. The ability to fire is not enough. Researchers engaged in the research of fire extinguishing agents know that sodium bicarbonate is recognized as a material with high fire extinguishing efficiency of Class B and C, but because of the alkalinity of sodium bicarbonate, it cannot be added to acidic ammonium dihydrogen phosphate.
Another defect of ammonium dihydrogen phosphate is that ammonium dihydrogen phosphate is the main fertilizer for plants, and the amount of

Method used

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  • Novel ABC dry powder fire-extinguishing agent and its making method
  • Novel ABC dry powder fire-extinguishing agent and its making method

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Get the sodium bicarbonate that is 45% by weight, be pulverized to particle size and be more than 360 orders; Get the potassium aluminum sulfate dodecahydrate (alum) that is 45% by weight, be pulverized to particle size and be 140 mesh; Be the activated clay of 3 by weight percentage; Mica powder with a percentage of 3; hydrophobic silica with a weight percentage of 3.65; and silicone oil with a weight percentage of 0.35. First put the powder into a high-speed mixer (400-600 rpm) and stir for 30 minutes, transfer the powder into the reaction tank, control the temperature to 60-70°C, spray silicone oil, and take a sample after reacting for 30 minutes. The indicators are qualified and discharged.

Embodiment 2

[0016] Take sodium bicarbonate with a weight percentage of 35, and grind it into an ultrafine powder with a particle size of 360 mesh or more; get 58 weight percent of potassium aluminum sulfate dodecahydrate, and grind it to a particle size of 140 mesh; ; The weight percent is 2.65 hydrophobic silica; The weight percent is 0.35 silicone oil. First put the powder into a high-speed mixer (400-600 rpm) and stir for 30 minutes, transfer the powder into the reaction tank, control the temperature to 60-70°C, spray silicone oil, and take a sample after reacting for 30 minutes. The indicators are qualified and discharged.

[0017] To the specific proportioning of each component when the present invention is implemented, four embodiments are also provided below, referring to the following table:

[0018]

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PUM

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Abstract

The invention discloses a novel ABC dry powder fire-extinguishing agent and its making method. The novel ABC dry powder fire-extinguishing agent comprises the following components by weight percentage: 25-50 of sodium bicarbonate, 40-65 of aluminum potassium disulfate dodecahydrate (alum), and the balance auxiliary materials. The making method includes: crushing sodium bicarbonate into superfine powder of over 360 meshes, and crushing aluminum potassium disulfate dodecahydrate (alum) into fine powder of over 140 meshes; putting the crushed sodium bicarbonate and aluminum potassium disulfate dodecahydrate (alum) as well as the auxiliary materials into a blender and blending them evenly, and then putting the mixture into a reaction tank to undergo a silicification reaction. In the invention, aluminum potassium disulfate dodecahydrate (alum) is taken as the main fire-extinguishing component for type A fires. The aluminum potassium disulfate dodecahydrate (alum) can well realize film forming cooling rapidly on a type A combustible substance firing surface like traditional ammonium dihydrogen phosphate so as to achieve cooling and sealing, thus preventing deep combustible solid from gasifying into combustible vapor. The sodium bicarbonate is selected to strengthen the extinguishing ability on type B and C fires.

Description

technical field [0001] The invention belongs to a fire extinguishing agent, in particular to a novel dry powder fire extinguishing agent for extinguishing Class A, B, and C fires and a manufacturing method thereof. Background technique [0002] With the elimination of halon fire extinguishing agent, various scientific research institutes, enterprises, and colleges and universities engaged in fire technology research and application of new fire extinguishing equipment have continuously developed new fire extinguishing agents and equipment to replace halon fire extinguishing agents and equipment, ABC dry powder fire extinguishing agent Since it was popularized and applied in China in the 1980s, it has developed rapidly under the trend of eliminating halon fire extinguishing agents, and its production capacity has continued to expand. The traditional ABC dry powder fire extinguishing agent uses ammonium dihydrogen phosphate as the main fire extinguishing substance. At this time...

Claims

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Application Information

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IPC IPC(8): A62D1/00
Inventor 刘洪义伍灿王君
Owner 关宏
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