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Composite base material of ABC superfine dry powder extinguishing agent and preparation method thereof

A technology of ultra-fine dry powder and composite substrate, which is applied in fire protection equipment and other directions, can solve the problems of complex preparation process, low moisture absorption rate, easy to form hard blocks, etc., and achieves the effect of simple preparation method, high fire efficiency and wide applicability

Inactive Publication Date: 2014-12-10
XIAN XINZHU FIRE & RESCUE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The base material for making ABC superfine dry powder fire extinguishing agent is mainly ammonium dihydrogen phosphate, ammonium dihydrogen phosphate and ammonium sulfate compound, and ammonium polyphosphate with a high degree of polymerization. Moisture absorption, easy to form hard lumps, leading to failure, and the preparation process is more complicated
The latter kind of ammonium polyphosphate base material with high degree of polymerization is difficult to achieve mass production of ultra-fine grinding, and the particle size after grinding is relatively large, which directly affects its fire extinguishing efficiency and the performance of total flooding fire extinguishing
Type I ammonium polyphosphate base material has lower cost, is easier to be ultra-finely crushed, is insoluble in water, has low moisture absorption rate, and has high fire extinguishing efficiency for class B and C fires, but poor fire extinguishing effect for class A fires

Method used

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  • Composite base material of ABC superfine dry powder extinguishing agent and preparation method thereof
  • Composite base material of ABC superfine dry powder extinguishing agent and preparation method thereof
  • Composite base material of ABC superfine dry powder extinguishing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of ABC superfine dry powder fire extinguishing agent composite substrate specifically includes the following steps:

[0022] Step 1, each raw material component is taken by weighing 1 ton of total raw material: 150kg of ammonium sulfate (90% particle diameter is less than or equal to 50 μm), and the remainder is type I ammonium polyphosphate (90% particle diameter is less than or equal to 30 μm, degree of polymerization 50 ~200).

[0023] In step 2, the ammonium sulfate and type I ammonium polyphosphate are dried separately to ensure that the moisture content is less than or equal to 0.20%.

[0024] In step 3, add the dried ammonium sulfate and type I ammonium polyphosphate into the high mixer and mix them evenly to obtain the intermediate material A.

[0025] In step 4, the intermediate material A is pulverized and classified by a supersonic airflow mill to obtain a composite base material of ABC superfine dry powder fire extinguishing agent with 90% p...

Embodiment 2

[0027] The preparation of ABC superfine dry powder fire extinguishing agent composite substrate specifically includes the following steps:

[0028] Step 1, each raw material component is taken by weighing 1 ton of total raw material: 200kg of ammonium sulfate (90% particle diameter is less than or equal to 50 μm), and the remainder is type I ammonium polyphosphate (90% particle diameter is less than or equal to 30 μm, degree of polymerization 50 ~200).

[0029] In step 2, the ammonium sulfate and type I ammonium polyphosphate are dried separately to ensure that the moisture content is less than or equal to 0.20%.

[0030] In step 3, add the dried ammonium sulfate and type I ammonium polyphosphate into the high mixer and mix them evenly to obtain the intermediate material A.

[0031] In step 4, the intermediate material A is pulverized and classified by a supersonic airflow mill to obtain a composite base material of ABC superfine dry powder fire extinguishing agent with 90% p...

Embodiment 3

[0033] The preparation of ABC superfine dry powder fire extinguishing agent composite substrate specifically includes the following steps:

[0034] Step 1, each raw material component is taken by weighing 1 ton of total raw material: 220kg of ammonium sulfate (90% particle diameter is less than or equal to 50 μm), and the remainder is type I ammonium polyphosphate (90% particle diameter is less than or equal to 30 μm, degree of polymerization 50 ~200).

[0035] In step 2, the ammonium sulfate and type I ammonium polyphosphate are dried separately to make the moisture content less than or equal to 0.20%.

[0036] In step 3, add the dried ammonium sulfate and type I ammonium polyphosphate into the high mixer and mix them evenly to obtain the intermediate material A.

[0037] In step 4, the intermediate material A is pulverized and classified by a supersonic airflow mill to obtain a composite base material of ABC superfine dry powder fire extinguishing agent with 90% particle si...

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Abstract

The invention relates to the field of fire fighting and extinguishing and discloses a composite base material of an ABC superfine dry powder extinguishing agent and a preparation method thereof. The extinguishing agent comprises the following raw materials by weight percent: 15-25% of ammonium sulfate and the balance of type I ammonium polyphosphate. The preparation method comprises the steps of mixing the raw materials according to a certain proportion, and milling and grading the raw materials by a supersonic jet mill, thus obtaining the ABC superfine dry powder extinguishing agent base material with 90% of particle sizes less than or equal to 10mu m. The preparation method is simple and can achieve batch preparation. The composite base material has the advantages that as 90% of particle sizes of the ABC superfine dry powder extinguishing agent prepared from the base material are less than or equal to 12mu m, a dry powder extinguishing agent similar to cold aerosol is formed in closed and semi-closed space after the ABC superfine dry powder extinguishing agent is subjected to pressure jetting; the ABC superfine dry powder extinguishing agent has excellent flooding extinguishing efficiency less than or equal to 90g / m<3> and long storage period.

Description

technical field [0001] The invention relates to the field of fire extinguishing, in particular to an ABC superfine dry powder fire extinguishing agent composite substrate and a preparation method thereof. Background technique [0002] At present, the ABC dry powder fire extinguishing agents sold on the market are mainly used for fire extinguishing of Class A, Class B and Class C fires. The base material for making ABC superfine dry powder fire extinguishing agent is mainly ammonium dihydrogen phosphate, ammonium dihydrogen phosphate and ammonium sulfate compound, and ammonium polyphosphate with a high degree of polymerization. Moisture absorption, easy to form lumps, leading to failure, and the preparation process is more complicated. The latter kind of high-polymerization ammonium polyphosphate base material ultra-fine grinding mass production is difficult to achieve, and the particle size after grinding is relatively large, which directly affects its fire extinguishing ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
Inventor 胡新赞王虎儒
Owner XIAN XINZHU FIRE & RESCUE EQUIP
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