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Fire-extinguishing particles and preparation method thereof

A particle and inorganic solid technology, applied in fire prevention equipment, etc., can solve the problems that the foam fire extinguishing agent cannot be fully covered in a short time, and the foam burns out, and achieves the effects of easy cleaning, convenient preparation, and simple operation

Inactive Publication Date: 2017-11-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is the problem that the foam fire extinguishing agent in the prior art cannot be fully covered in a short time or the foam is continuously burned by the oil tank fire. The advantages of volatilization, preventing the spread of fire, and being able to float on the surface of oil and water layers for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) The mass percentage example of raw materials required for fire extinguishing particles:

[0017] Expanded Perlite 50%

[0018] Modifier Fluoroalkylamine quaternary ammonium salt 5%

[0019] Cosolvent Isopropanol 15%

[0020] Activator Sodium Hydroxide Solution 30%

[0021] (2) Production method:

[0022] Add 30% sodium hydroxide solution into the jacketed reaction kettle, control the temperature at 65°C, then add 50% expanded perlite under stirring, stir for 45 minutes to activate; import all activated materials into a centrifuge and filter for 10 minutes , wash the material in the centrifuge with deionized water to pH<9; pour the filter residue into another solid-liquid mixing kettle, add 5% fluoroalkylamine quaternary ammonium salt and 15% isopropanol under stirring, and stir 60min, during this process, release the lower material, and add it to the solid-liquid mixing tank through the feeding port, and repeat this for 3 to 5 times to prevent the material at th...

Embodiment 2

[0024] (1) The mass percentage example of raw materials required for fire extinguishing particles:

[0025] Expanded Vermiculite 50%

[0026] Modifier perfluoroalkylamide quaternary ammonium salt 25%

[0027] Co-solvent ethanol 15%

[0028] Activator Potassium Hydroxide Solution 10%

[0029] (2) Production method:

[0030] Add 10% potassium hydroxide solution into the jacketed reactor, control the temperature at 55°C, then add 50% expanded vermiculite under stirring, stir for 50 minutes to activate; import all activated materials into a centrifuge and filter for 10 minutes , wash the material in the centrifuge with deionized water to pH<9; pour the filter residue into another solid-liquid mixing kettle, add 25% perfluoroalkylamide quaternary ammonium salt and 15% ethanol under stirring, and stir for 60min , During this process, release the lower material and add it to the solid-liquid mixing tank through the feeding port, and repeat this for 3 to 5 times to prevent the mat...

Embodiment 3

[0032] (1) The mass percentage example of raw materials required for fire extinguishing particles:

[0033] Hollow glass beads 50%

[0034] Modifier perfluorooctane sulfonamide quaternary ammonium salt 15%

[0035] Cosolvent Isopropanol 15%

[0036] Activator Sodium Hydroxide Solution 20%

[0037] (2) Production method:

[0038] Add 20% sodium hydroxide solution into the jacketed reaction kettle, control the temperature at 75°C, then add 50% hollow glass microspheres under stirring, stir for 60 minutes to activate; import all activated materials into a centrifuge for filtration

[0039] 15min, wash the material in the centrifuge with deionized water to pH<9; pour the filter residue into another solid-liquid mixing kettle, add 15% perfluorooctane sulfonamide quaternary ammonium salt and 15% isopropyl Alcohol, stirring for 60 minutes, during this process, release the lower material and add it to the solid-liquid mixing tank through the feeding port, repeat this 3 to 5 times ...

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Abstract

The invention relates to fire-extinguishing particles and a preparation method thereof, and mainly solves the problem that a foam fire-extinguishing agent cannot comprehensively cover in a short time or foam is continuously combusted and exhausted by fire of oil tanks in the prior art. The problem is solved well through adopting the technical scheme that the fire-extinguishing particles and the preparation method thereof are adopted, the fire-extinguishing particles comprise inorganic solid materials with hollow interiors or with cellular micropore structures, and the inorganic solid materials are modified expanded perlite, expanded vermiculite, hollow glass beads or floating beads; hydrophobic and oleophobic surface modification treatment is carried out on the fire-extinguishing particles, and the modifier is a cationic fluorocarbon surfactant containing alkyl group or amide group or sulfamide group; a cosolvent is at least one of alcohols and ethers, and an activator is sodium hydroxide solution or potassium hydroxide solution; the mass percentage content of the cationic fluorocarbon surfactant is 5%-25%; the mass percentage content of the cosolvent is 15%-25%; and the mass percentage content of the activator is 10%-30%. The fire-extinguishing particles can be used for fighting the fire of the oil tanks.

Description

technical field [0001] The invention relates to a fire extinguishing particle and a preparation method thereof. Background technique [0002] At present, a series of foam fire extinguishing agents are mainly used to extinguish oil tank fires, which have played a huge role in the fire extinguishing process of storage tanks, but the foam fire extinguishing agents have poor burning resistance and relatively low resurgence resistance. For a large oil tank fire, the duration of the fire may last for several hours or even days; multiple injections of foam are required. If the foam supply intensity is insufficient to form effective coverage, the foam sprayed in the early stage will continue to burst, making the fire out of control. Resurrected again. Therefore, for oil tank fires, it is necessary to continuously develop new fire extinguishing agents to overcome existing defects and meet fire extinguishing requirements. [0003] Most inorganic lightweight particles are minerals wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
CPCA62D1/0014
Inventor 谈龙妹吴京峰尚祖政郎需庆姜春明牟小冬蒋婷婷
Owner CHINA PETROLEUM & CHEM CORP
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