ABC superfine dry powder anti-reburning fire extinguishing agent and preparation method thereof

An ultra-fine dry powder, anti-re-ignition technology, used in fire prevention equipment and other directions, can solve the problems of not easily suspended in the fire zone, slow fire extinguishing reaction, large dosage, etc. quick response

Inactive Publication Date: 2014-10-15
JIANGXI JIN XIAN FIRE CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Commonly used ammonium phosphate ordinary dry powder fire extinguishing agent, because the particle size of the dry powder is large, the number of particles smaller than the critical reaction particle size is small, it is not easy to sus

Method used

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  • ABC superfine dry powder anti-reburning fire extinguishing agent and preparation method thereof
  • ABC superfine dry powder anti-reburning fire extinguishing agent and preparation method thereof
  • ABC superfine dry powder anti-reburning fire extinguishing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of ABC superfine dry powder anti-resurgence fire extinguishing agent comprises the following steps:

[0028] 1) Mixing 88% food grade monoammonium phosphate by weight, 1.5% mica by weight, 5.35% silicon dioxide by weight and 2.5% ammonium sulfate by weight, and then adding weight by spraying The hydrogen-containing silicone oil with a percentage of 1% and the solvent oil equivalent to the hydrogen-containing silicone oil are stirred at high speed by a high-speed mixer for 30 minutes to obtain product A;

[0029] 2) The product A is pulverized with a high-speed jet mill until more than 90% of the particles have a particle size of less than 15 microns to obtain the product B;

[0030] 3) Add the product B into the reaction vessel, heat up and stir, and when the temperature of the product B rises to 60°C, add 1.5% by weight hydrogen-containing silicone oil and 3 times the amount of hydrogen-containing silicone oil by spraying Water is heated at a constant temperatu...

Embodiment 2

[0032] A kind of ABC superfine dry powder anti-resurgence fire extinguishing agent comprises the following steps:

[0033] 1) Mixing 85% food grade monoammonium phosphate by weight, 2% mica by weight, 8.8% silicon dioxide by weight and 2% ammonium sulfate by weight, and then adding weight by spraying Hydrogen-containing silicone oil with a percentage of 0.5% and toluene equivalent to the hydrogen-containing silicone oil were stirred at high speed by a high-speed mixer for 25 minutes to obtain product A;

[0034] 2) The product A is pulverized with a high-speed jet mill until more than 90% of the particles have a particle size of less than 15 microns to obtain the product B;

[0035] 3) Add the product B into the reaction vessel, heat up and stir, when the temperature of the product B rises to 55°C, add 1.5% by weight hydrogen-containing silicone oil and 3 times the amount of hydrogen-containing silicone oil by spraying Water is heated at a constant temperature of 85°C for 3 h...

Embodiment 3

[0037] A kind of ABC superfine dry powder anti-resurgence fire extinguishing agent comprises the following steps:

[0038] 1) 90% by weight of food grade monoammonium phosphate, 1% by weight of mica, 2.9% by weight of silicon dioxide and 3% by weight of ammonium sulfate are mixed, and then added by spraying Hydrogen-containing silicone oil with a percentage of 1% and toluene equivalent to the hydrogen-containing silicone oil were stirred at high speed by a high-speed mixer for 40 minutes to obtain product A;

[0039] 2) The product A is pulverized with a high-speed jet mill until more than 90% of the particles have a particle size of less than 15 microns to obtain the product B;

[0040] 3) Add the product B into the reaction vessel, heat up and stir, and when the temperature of the product B rises to 65°C, add 2% by weight hydrogen-containing silicone oil and 3 times the amount of hydrogen-containing silicone oil by spraying Water is heated at a constant temperature of 100°C...

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Abstract

The invention discloses an ABC superfine dry powder anti-reburning fire extinguishing agent. The fire extinguishing agent comprises the following components in percentage by weight: 85-90% of monoammonium phosphate, 1-2% of mica, 2.9-8.8% of silicon dioxide, 2-3% of ammonium sulfate, 2-3% of hydrogen-containing silicone oil, and 0.1-0.2% of fluorocarbon. The fire extinguishing agent is fast in fire extinguishing response, is good in powder diffusing performance, is easily suspended in burning space to form stable aerosol, is fast in heated decomposition, is quick in endothermic reaction, has strong capacity of capturing free radicals, has largely improved fire extinguishing efficiency. Moreover, the fire extinguishing agent is good in water repellency, is strong in flowing property, is strong in electrical insulating property and caking resistance, is low in corrosion, and is not easy to cake. The fire extinguishing agent can be preserved for a long time in a sealed container filled with nitrogen and argon. Because silicon dioxide, mica and ammonium sulfate are low in cost and can be easily purchased, the fire extinguishing agent can be conveniently produced in large scale. The fire extinguishing agent is simple in preparation process, causes no harm to humans, animals and the environment, and after the fire is extinguished, the environment is easy to clean and corrosion of equipment is low.

Description

technical field [0001] The invention relates to the field of powder fire extinguishing agents, in particular to an ABC superfine dry powder anti-resurgence fire extinguishing agent and a preparation method thereof. Background technique [0002] Halon 1211 and 1301 fire extinguishing agents are bromofluorocarbons, which are found by American scientists to have a huge destructive effect on the atmospheric ozone layer and are an important factor causing the ozone hole. In 2005, the Chinese government promised to stop the use of 1211 halon fire extinguishing agent, and in 2010 to stop the production of 1301 halon fire extinguishing agent. [0003] Commonly used ammonium phosphate ordinary dry powder fire extinguishing agent, because the particle size of the dry powder is large, the number of particles smaller than the critical reaction particle size is small, it is not easy to suspend in the fire area, the fire extinguishing reaction speed is slow, the efficiency is low, and the...

Claims

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Application Information

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IPC IPC(8): A62D1/00
Inventor 易小明
Owner JIANGXI JIN XIAN FIRE CHEM IND
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