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Production technology of powder extinguishing agent

A technology of dry powder fire extinguishing agent and production process, which can be applied in the direction of fire prevention equipment, etc., and can solve the problem of low spray performance

Inactive Publication Date: 2011-11-23
上海百友得机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the commonly used dry powder fire extinguishing agent has a certain degree of water absorption and low spray performance. Three fire extinguishing tests for class A, B and C fires only require at least one successful fire extinguishing

Method used

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  • Production technology of powder extinguishing agent
  • Production technology of powder extinguishing agent
  • Production technology of powder extinguishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1. Preparation of dry powder fire extinguishing agent

[0016] Prepare four kinds of dry powder fire extinguishing agents respectively according to the following production process: 1) base material is made up of the dry powder fire extinguishing agent of 40% diammonium hydrogen phosphate and 44% ammonium sulfate; 2) base material is made up of 50% diammonium hydrogen phosphate and 33% ammonium sulfate dry powder fire extinguishing agent; 3) dry powder fire extinguishing agent with base material composed of 80% diammonium hydrogen phosphate and 3% ammonium sulfate; and 4) base material composed of 90% diammonium hydrogen phosphate Dry powder fire extinguishing agent.

[0017] The production process is as follows:

[0018] 1) Base material pulverization: respectively pulverize ammonium dihydrogen phosphate and ammonium sulfate into powders with a particle size of less than 250 μm;

[0019] 2) Separation: remove particles with a particle size larger than 250 ...

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Abstract

The invention provides a production technology of powder extinguishing agent, comprising the following steps: smashing raw materials, separating, mixing, silicifying, drying and screening to obtain the powder extinguishing agent which takes ammonium dihydrogen phosphate and ammonium sulfate as base materials. The electric insulativity, the water repellency and the injection performance of the powder extinguishing agent are effectively improved, and the efficacy of extinguishing A, B and C-type fire hazards is obviously improved.

Description

technical field [0001] The invention relates to a production process of a fire extinguishing agent, in particular to a production process of a dry powder fire extinguishing agent. Background technique [0002] Dry powder is a dry solid fine powder with a water content of no more than 0.1-0.2%, good fluidity, a particle size mostly below 200 mesh, and a high specific surface area (2000-3500 cm2 / g). Dry powder fire extinguishing agents are usually powered by high-pressure carbon dioxide gas (or nitrogen) and are used to extinguish flammable, combustible liquids, liquefied petroleum gas and natural gas and other flammable gases, as well as initial fires of electrical equipment. [0003] Sodium bicarbonate or potassium bicarbonate is often used as the base material for dry powder fire extinguishing agents, and an appropriate amount of moisture-proof agent, fluidity promoter and caking preventive agent (such as talcum powder, mica powder, graphite powder, magnesium stearate, acti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
Inventor 朱春平
Owner 上海百友得机械设备有限公司
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