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Ammonium phosphate salt dry powder extinguishing agent and preparation method thereof

A dry powder fire extinguishing agent, ammonium phosphate technology, applied in fire protection equipment and other directions, can solve the problems of difficult filling of fire extinguishers and fire protection systems, and the reduction of fire extinguishing effect of dry powder fire extinguishing agents, so as to improve fire extinguishing efficiency, improve bulk density, and reasonable particle size structure. Effect

Active Publication Date: 2021-10-26
NINGBO NENGLIN FIRE FIGHTING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fine particle size of ammonium dihydrogen phosphate, it is difficult to fill fire extinguishers and fire protection systems
A variety of factors lead to a decline in the fire extinguishing effect of dry powder fire extinguishing agents

Method used

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  • Ammonium phosphate salt dry powder extinguishing agent and preparation method thereof
  • Ammonium phosphate salt dry powder extinguishing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 750 kg of ammonium dihydrogen phosphate, 150 kg of ammonium sulfate, 30 kg of mica powder, 30 kg of activated clay, 20 kg of hydrophobic white carbon black, 15 kg of silicone oil, 20 kg of water, and 20 kg of talcum powder.

[0038] (1) 5kg silicone oil, 5kg hydrophobic white carbon black and 380kg ammonium dihydrogen phosphate are mixed homogeneously, and main raw material pulverized material 1; 5kg silicone oil, 5kg hydrophobic white carbon black are mixed with 370kg ammonium dihydrogen phosphate and 150kg ammonium sulfate, Crushed material 2 as the main raw material;

[0039] (2) pulverize the main raw material pulverized material 1 after pre-siliconization with an ultrafine pulverizer, so that the particle size after pulverization satisfies D90 between 10-15 microns; Pulverized material 2 is pulverized to meet the requirement that the particle size D90 is between 80-100 microns;

[0040] (3) Put the pulverized main raw material pulverized material 1, main raw...

Embodiment 2

[0043] Weigh 700kg of ammonium dihydrogen phosphate, 200kg of ammonium sulfate, 40kg of mica powder, 20kg of activated clay, 25kg of hydrophobic white carbon black, 20kg of silicone oil, 25kg of water, and 15kg of talcum powder.

[0044] (1) 6kg silicone oil, 7kg hydrophobic white carbon black and 390kg ammonium dihydrogen phosphate are mixed homogeneously, and main raw material pulverized material 1; 6kg silicone oil, 7kg hydrophobic white carbon black are mixed with 310kg ammonium dihydrogen phosphate and 200kg ammonium sulfate, Crushed material 2 as the main raw material;

[0045] (2) pulverize the main raw material pulverized material 1 after pre-siliconization with an ultrafine pulverizer, so that the particle size after pulverization satisfies D90 between 10-15 microns; Pulverized material 2 is pulverized to meet the requirement that the particle size D90 is between 80-100 microns;

[0046] (3) Put the pulverized main raw material pulverized material 1, main raw materia...

Embodiment 3

[0049] Weigh 700kg of ammonium dihydrogen phosphate, 150kg of ammonium sulfate, 30kg of mica powder, 40kg of activated clay, 30kg of hydrophobic white carbon black, 25kg of silicone oil, 30kg of water, and 50kg of talcum powder.

[0050] (1) 7kg silicone oil, 8kg hydrophobic white carbon black and 420kg ammonium dihydrogen phosphate are mixed homogeneously, and main raw material pulverized material 1; 7kg silicone oil, 8kg hydrophobic white carbon black are mixed with 280kg ammonium dihydrogen phosphate and 150kg ammonium sulfate, Crushed material 2 as the main raw material;

[0051] (2) pulverize the main raw material pulverized material 1 after pre-siliconization with an ultrafine pulverizer, so that the particle size after pulverization satisfies D90 between 10-15 microns; Pulverized material 2 is pulverized to meet the requirement that the particle size D90 is between 80-100 microns;

[0052] (3) Put the pulverized main raw material pulverized material 1, main raw materia...

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Abstract

The invention belongs to the field of dry powder extinguishing agents, and relates to an ammonium phosphate salt dry powder extinguishing agent and a preparation method thereof. The ammonium phosphate salt dry powder extinguishing agent is prepared from the following raw materials in parts by weight: 70 to 75 parts of ammonium dihydrogen phosphate; 15 to 20 parts of ammonium sulfate; 1 to 5 parts of white carbon black; 1 to 3 parts of silicone oil; 1 to 3 parts of water; and 1 to 20 parts of filler. The particle size D90 of 50-60% of ammonium dihydrogen phosphate is 10-15 [mu]m, the particle size D90 of the remaining ammonium dihydrogen phosphate is 80-100 [mu]m, and the particle size D90 of ammonium sulfate is 80-100 [mu]m. The dry powder extinguishing agent has excellent fire extinguishing performance, the overall bulk density of the extinguishing agent can be increased easily, and the situation that a fire extinguisher and a fire extinguishing system are difficult to fill can be effectively avoided.

Description

technical field [0001] The invention belongs to the field of dry powder fire extinguishing agent and relates to an ammonium phosphate dry powder fire extinguishing agent and a preparation method thereof. Background technique [0002] Dry powder fire extinguishing agent, because of its unique properties, plays a very important role in the field of fire extinguishing agents today, and now the mainstream dry powder fire extinguishing agent is ammonium phosphate dry powder fire extinguishing agent, which has greater applicability and can fight fires Most fires except combustible metals. In actual use, due to its unique physical properties, dry powder fire extinguishing agents are difficult to use directly like water, and are used in conjunction with portable fire extinguishers and fire fighting systems to extinguish fire sources. However, in order to cooperate with fire extinguishers and fire protection systems, it is difficult to produce dry powder fire extinguishing agents co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00A62D1/06
CPCA62D1/0014A62D1/06
Inventor 俞力张琦
Owner NINGBO NENGLIN FIRE FIGHTING EQUIP
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