Gas-solid composite powder base fire-extinguishing agent and preparation method thereof

A kind of fire extinguishing agent, powder-based technology, applied in the direction of fire prevention equipment, etc., can solve the problems of practical application inconvenience, etc., achieve the effects of enhanced fire extinguishing effect, improved flow performance, and improved anti-reburning performance

Inactive Publication Date: 2011-05-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to modify the dry powder particles to adapt to the properties of different haloalkane gases. At the same time, considering the properties of haloalkane different from nitrogen, the existing dry powder fire extinguishers that use nitrogen as the driving gas also need to be redesigned. application inconvenience

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Take 13X type zeolite as the gas-solid composite powder-based fire extinguishing agent of matrix

[0022] Mill 95g of 13X-type zeolite in a ball mill for 30min, then dry at 120°C for 2h, and the average particle size will be less than 10μm; take 90g of the refined zeolite and put it into a 2.0L steel cylinder with a pressure resistance of 0.5MPa or more Pump to vacuum, then inject 10ml of BTP liquid, and place it in an oven at 40°C for 12 hours; after cooling to room temperature, add 1.4g of calcium hydroxide superfine powder and 5.6g of talcum powder into the steel cylinder, and stir Mix the three powders evenly to obtain the gas-solid composite powder-based fire extinguishing agent of the present invention.

[0023] As measured by a particle size analyzer, the average particle size of the particles in the fire extinguishing agent is 4.7 μm.

[0024] According to the X-ray fluorescence test, the content of Br in the sample was 6.4%, indicating that the c...

Embodiment 2

[0026] Embodiment 2: Take mordenite as the gas-solid composite powder-based fire extinguishing agent of matrix

[0027] After milling 100g of mordenite in a ball mill for 20min, dry at 120°C for 2h; take 90g of the refined zeolite and put it into a 2.0L steel cylinder with a pressure resistance of 0.5MPa to vacuum, and then inject 8ml of BTP liquid, Place in an oven at 35°C for 24 hours; after cooling to room temperature, add 1.0g of calcium hydroxide superfine powder and 4.2g of talcum powder into the steel cylinder, shake the steel cylinder for 15 minutes to mix the three powders evenly, that is Obtain the gas-solid composite powder-based fire extinguishing agent of the present invention.

[0028] As measured by a particle size analyzer, the average particle size of the particles in the fire extinguishing agent is 5.0 μm.

[0029] According to the X-ray fluorescence test, the content of Br in the sample was 4.6%, indicating that the content of BTP was 10.1%.

[0030] 100g ...

Embodiment 3

[0031] Embodiment 3: Take NaY type zeolite as the gas-solid composite fire extinguishing agent of matrix

[0032] Mill 100g of NaY-type zeolite in a ball mill for 40min, and dry at 120°C for 2h; take 90g of the refined zeolite and put it into a 2.0L steel cylinder with a pressure resistance of 0.5MPa to vacuum, and then inject 5ml of BTP liquid , placed in an oven at 40°C for 12 hours; after cooling to room temperature, add 2.0g of calcium hydroxide superfine powder and 5.0g of talcum powder into the cylinder, shake the cylinder for 10min to mix the three powders evenly, That is the gas-solid composite powder-based fire extinguishing agent of the present invention.

[0033] As measured by a particle size analyzer, the average particle size of the particles in the fire extinguishing agent is 4.5 μm.

[0034] According to the X-ray fluorescence test, the content of Br in the sample is 3.5%, indicating that the content of BTP is 7.6%.

[0035]Put 50g of the composite powder in ...

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Abstract

The invention discloses a gas-solid composite ultra-fine powder-based extinguishing agent and a preparation method thereof, which are characterized in that according to the mass percentage in the system, 73-89 percent of ultra-fine zeolite, with the average particle size below 10 microns is arranged in a pressure withstanding vessel for vacuum-pumping; subsequently, 5.0-20.0 percent of 2-bromine-3, 3, 3-trifluoropropene liquid is injected into the vessel, stands for 12-24 hours at the temperature of 35-50 DEG C and cooled to room temperature; subsequently, 0.5-2.0 percent of barium hydroxide and 2.5-5.0 percent of talcum powder are added into the vessel and all powders are uniformly mixed; the obtained gas-solid composite ultra-fine powder-based distinguishing agent has high distinguishing efficiency, low corrosion and good anti-afterburning; the raw material is cheap and easy to be obtained; the preparation process is simple; the gas-solid composite ultra-fine powder-based distinguishing agent not only can be used as a distinguishing agent but also can be used as an additive to various commercial powder extinguishing agents, and is applicable to various fire extinguishers for fighting various fires such as solid fire, combustible gas fire, liquid fire and the like.

Description

technical field [0001] The invention belongs to the technical field of powder-based fire extinguishing agents, in particular to a gas-solid composite fire extinguishing agent and a preparation method thereof. Background technique [0002] Among many types of fire extinguishing agents, powder has been widely used in fighting solids, liquids, flammable gases, etc. Types of fires occupy an important position in the field of fire extinguishing agents today. However, traditional powder fire extinguishing agents are not efficient in trapping free radicals or active groups due to their larger size, faster settling speed, and slower thermal decomposition speed, and their fire extinguishing ability is limited; some fire extinguishing agents (such as bicarbonate Sodium) decomposition products are also corrosive. In addition, the silicone oil hydrophobic film on the surface of ordinary dry powder particles has strong lipophilicity. When fighting oil fires, it is easy to sink into the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/00
Inventor 倪小敏郑化桂廖光煊
Owner UNIV OF SCI & TECH OF CHINA
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