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Method for preparing full-silicide ABC dry powder fire fighting agent

A dry powder fire extinguishing agent, fully silicified technology, applied in fire prevention equipment, etc., can solve the problems of low product market competitiveness, moisture agglomeration during storage, affecting fire extinguishing efficiency, etc., to improve product competitiveness, stable moisture content, high moisture resistance Effect of anti-caking properties

Inactive Publication Date: 2009-07-22
NINGBO NENGLIN FIRE FIGHTING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the technology and quality of ABC dry powder fire extinguishing agent produced in my country are far behind those of developed countries in the world. The main problems are unstable moisture content and moisture agglomeration during storage, which affects its fire extinguishing efficiency and product market competition. low force

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Prepare 100kg 40% fully siliconized ABC dry powder fire extinguishing agent:

[0019] Preparation process:

[0020] a. Grinding material: Grinding ammonium dihydrogen phosphate and ammonium sulfate separately, the particle size of the grinding material should reach 200 mesh;

[0021] b. Feeding and mixing: Weigh 41kg of the crushed ammonium dihydrogen phosphate, 40.5kg of ammonium sulfate, 3kg of activated clay, 3kg of mica powder, 7kg of talcum powder, 2kg of fluorite powder, 0.5kg of organic silicone oil, and 3kg of hydrophobic white carbon black. The above-mentioned weighed materials other than silicone oil and hydrophobic white carbon black are put into the mixing dryer, and the mixture is stirred at room temperature to make the materials mix evenly;

[0022] c. Full siliconization treatment: first prepare a silicone oil solution, that is, under normal temperature and pressure, weigh 0.5 kg of silicone oil, 0.2 kg of acetone and 0.5 kg of water in step b according ...

Embodiment 2

[0028] Prepare 100kg of 70% fully silicified ABC dry powder fire extinguishing agent, the ratio of each component is as follows: ammonium dihydrogen phosphate: 71kg, ammonium sulfate: 12.5kg, activated clay: 3kg, mica powder: 3kg, talcum powder: 5kg, fluorite powder: 2kg, Silicone oil: 0.5kg, hydrophobic white carbon black: 3kg.

[0029] Change the solvent used in configuring the silicone oil solution into motor gasoline, and the others are the same as in Example 1.

Embodiment 3

[0031] Prepare 100kg of 90% fully silicified ABC dry powder fire extinguishing agent, the proportion of each component is as follows: ammonium dihydrogen phosphate: 91kg, ammonium sulfate: 1.5kg, activated clay: 2kg, mica powder: 1kg, talcum powder: 0.5kg, fluorite powder: 0.5 kg, silicone oil: 0.5kg, hydrophobic silica: 3kg.

[0032] The technological process of preparation is with embodiment 1.

[0033] The product anti-caking performance of above-mentioned embodiment 1~3 is shown in the table below:

[0034] The product anti-caking performance of embodiment 1~3 compares with GB4066.2 national standard anti-caking performance

[0035] Pilot projects GB4066.2 national standard Example 1 Example 2 Example 3 water repellency No obvious water absorption,

no caking No obvious water absorption,

no caking No obvious water absorption,

no caking No obvious water absorption,

no caking Moisture absorption rate ≤3.0％ 1.24％ 1.28％ 1.36％ ...

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Abstract

The invention discloses a method for preparing a full siliconization ABC powder extinguishing agent, which comprises the following steps: pulverizing monoammonium phosphate and ammonium sulphate; weighing 2 to 4 percent of floridin, 1 to 3 percent of mica powder, 0.5 to 10 percent of talcum powder, 0.5 to 10 percent of ore fluorite, 2 to 4 percent of lyophobic white carbon black, 0.2 to 0.6 percent of organic silicon oil, 40 to 91 percent of pulverized monoammonium phosphate and 1.5 to 50 percent of ammonium sulphate in percentage by weight; mixing the materials evenly except the lyophobic white carbon black and the organic silicon oil; stirring the organic silicon oil, an organic solvent and water to form an emulsifying silicon oil solution in the ratio of 1:0.4:1; pressurizing the solution to between 0.4 to 0.6Mpa, and spraying the solution onto the mixed materials to be silicified for 30 to 60min; drying and stirring the silicified materials, and adding the lyophobic white carbon black to be mixed evenly, sieved and packaged. The extinguishing agent prepared by the invention has the advantages of stable water ratio, high performance of moisture prevention and agglomeration prevention and better fire-extinguishing efficiency.

Description

technical field [0001] The invention relates to the field of dry powder fire extinguishing agent, in particular to a preparation method of fully silicified ABC dry powder fire extinguishing agent. Background technique [0002] With the elimination of haloalkane fire extinguishing agents and the gradual restriction of the use of PFOS fluorosurfactants for foam fire extinguishing agents (Stockholm Convention), ABC dry powder fire extinguishing agents have become more and more people's attention as a substitute for the above fire extinguishing agents. Has been widely used. At present, the technology and quality of ABC dry powder fire extinguishing agent produced in my country are far behind those of developed countries in the world. The main problems are unstable moisture content and moisture agglomeration during storage, which affects its fire extinguishing efficiency and product market competition. Power is low. Contents of the invention [0003] The purpose of the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
Inventor 王仁国王善明张琦
Owner NINGBO NENGLIN FIRE FIGHTING EQUIP
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