Cold-resistant water-based fire extinguishing agent suitable for -30 DEG C, and preparation method thereof

A technology of fire extinguishing agent and water system, applied in fire prevention equipment, etc., can solve the problems of ineffective reduction of the temperature of combustion objects, reduction of fire extinguishing efficiency, large surface tension value, etc., and achieves strong recombustion resistance, short degradation time and fast fire extinguishing speed Effect

Inactive Publication Date: 2020-05-12
ZHENGZHOU HAITIAN FIREFIGHTING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But with water as fire extinguishing agent, also there are many disadvantages
For example, water has a high degree of fluidity and is difficult to stay on the surface of the combustion object, so it cannot effectively reduce the temperature of the combustion object; if too much steam accumulates in a confined space, it may cause a steam explosion, etc.
Water has a large surface tension value, low wetting ability, which reduces its fire extinguishing efficiency

Method used

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  • Cold-resistant water-based fire extinguishing agent suitable for -30 DEG C, and preparation method thereof
  • Cold-resistant water-based fire extinguishing agent suitable for -30 DEG C, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a cold-resistant water-based fire extinguishing agent suitable for -30°C as claimed in claim 3, characterized in that it comprises the following steps:

[0024] (1) Add 8% of ammonium dihydrogen phosphate, 8% of diammonium hydrogen phosphate, 15% of ethylene glycol and 4% of sodium bicarbonate successively by weight percentage in the synthesis reactor, and the stirring speed of the reactor setting is 1800r / min, the temperature is 35°C, and the synthesis is stirred for 30 min;

[0025] (2) Adjust the rotating speed of the reactor to be 45r / min, and the temperature is 30°C, then continue to add 2% fluorocarbon surfactant and 810% alkyl glycoside APG in sequence, and the stirring synthesis time is 90min, and the stirring synthesis time is 90min;

[0026] (3) On the basis of step (2), add the remaining amount of water and stir for 4 hours, then the central control detects, and after standing at room temperature for 2 hours, the finished product is co...

Embodiment 2

[0029] A method for preparing a cold-resistant water-based fire extinguishing agent suitable for -30°C as claimed in claim 3, characterized in that it comprises the following steps:

[0030] (1) Add 10% ammonium dihydrogen phosphate, dihydrogen phosphate 10%, ethylene glycol 18% and sodium bicarbonate 6% successively by weight percentage in the synthesis reactor, and the stirring speed of the reactor is set to 1800r / min , the temperature is 35 ~ 40 ° C, stirring for 30 minutes;

[0031] (2) Adjust the rotating speed of the reaction kettle to be 45r / min, and the temperature is 32°C, then continue to add 3% fluorocarbon surfactant and alkyl glycoside APG8 in sequence, and stir for 90 minutes to synthesize;

[0032] (3) On the basis of step (2), add the remaining amount of water and stir for 4 hours, then the central control detects, and after standing at room temperature for 2 hours, the finished product is completed;

[0033] (4) Settling for 10 days (according to GB15308-2006...

Embodiment 3

[0035] A method for preparing a cold-resistant water-based fire extinguishing agent suitable for -30°C as claimed in claim 3, characterized in that it comprises the following steps:

[0036] (1) Add 10% of ammonium dihydrogen phosphate, 10% of diammonium hydrogen phosphate, 20% of antifreeze and 8% of sodium bicarbonate successively by weight percentage in the synthesis reaction kettle, and the stirring speed of the reaction kettle is set to be 1800r / min, the temperature is 40°C, and the synthesis is stirred for 30 min;

[0037] (2) Adjust the rotating speed of the reactor to be 45r / min, and the temperature is 35°C, then continue to put in 5% fluorocarbon surfactant and 810% alkyl glycoside APG in sequence, and stir for 90 minutes to synthesize;

[0038] (3) On the basis of step (2), add the remaining amount of water and stir for 4 hours, then the central control detects, and after standing at room temperature for 2 hours, the finished product is completed;

[0039] (4) Sett...

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PUM

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Abstract

The invention discloses a cold-resistant water-based fire extinguishing agent suitable for -30 DEG C, and a preparation method thereof, relates to the field of firefighting engineering, and provides the cold-resistant water-based fire extinguishing agent suitable for -30 DEG C. 8-10% of ammonium dihydrogen phosphate, 8-10% of diammonium hydrogen phosphate, 15-20% of an anti-freezing agent and 4-8%of sodium bicarbonate are sequentially added into a synthesis reaction kettle in percentage by weight, and stirring synthesis is conducted for 30 min; the rotating speed of the reaction kettle is adjusted to be 45 r/min, then 2-5% of a surfactant and 8-10% of alkyl glycoside APG are continuously and sequentially added, and stirring synthesis is performed for 90 min; and the balance of water is added, stirring is performed for 4 h, central control detection is carried out, and standing is performed at normal temperature for 2 h to obtain the product; and settling is performed for 10 days (qualified according to GB15308-2006 detection), and the obtained product is sub-packaged and leave a factory. The preparation method is simple and easy to operate, and the prepared fire extinguishing agent is good in freezing resistance effect, high in fire extinguishing grade, high in fire extinguishing speed, high in efficiency and good in effect.

Description

technical field [0001] The invention relates to the field of fire engineering, and in particular to a cold-resistant water-based fire extinguishing agent suitable for -30°C and a preparation method thereof, which are used for extinguishing various types of fires. Background technique [0002] Water-based fire extinguishing agent is one of the most effective fire extinguishing agents due to its cleanness, environmental protection and excellent characteristics of water. The water is vaporized and converted into a large amount of steam, which prevents air from entering the combustion zone and reduces the rate of combustion, thus slowing down the combustion process. But with water as fire extinguishing agent, also there are many shortcomings. For example, water has a high degree of fluidity and it is difficult to stay on the surface of the combustion object, so the temperature of the combustion object cannot be effectively reduced; if too much steam accumulates in a confined sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
CPCA62D1/0042
Inventor 李世忠杨卫峰王振兆王燕君徐利平
Owner ZHENGZHOU HAITIAN FIREFIGHTING MATERIAL CO LTD
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