Fire preventing and extinguishing gel preparation method and coal mine fire preventing and extinguishing method

Abstract

The invention belongs to the technical field of coal mine fire prevention and extinguishment, and discloses a fire preventing and extinguishing gel preparation method and a coal mine fire preventing and extinguishing method. The fire preventing and extinguishing gel is prepared from, by mass, 1%-2% of carboxymethyl cellulose, 4%-5% of a cross-linking agent, 4%-5% of sodium bicarbonate, 4%-5% of a water glass diluted solution, 0.1%-0.3% of a pH regulator and water. The preparation method comprises the following steps: dissolving carboxymethyl cellulose in distilled water, heating and fully stirring, then adding aluminum citrate into a solution, introducing nitrogen for protection, and reacting to obtain a first solution; raising the temperature, continuously adding glucolactone into the first solution, and continuously stirring and reacting to obtain a second solution; adding sodium bicarbonate into the second solution, uniformly stirring, adding the pH regulator, and adjusting to obtain a third solution; dissolving water glass in distilled water, mixing, dropwise adding into the third solution, and reacting to obtain a final product. The coal storage time is prolonged, and the safety production efficiency of a coal mine is improved.

Description

technical field [0001] The invention belongs to the technical field of coal mine fire prevention and extinguishing, and in particular relates to a method for preparing a fire prevention gel and a coal mine fire prevention and extinguishing method. Background technique [0002] At present, coal spontaneous combustion is one of the main threats to coal mine safety. The resulting fire will cause casualties and heavy property damage, as well as serious environmental pollution. In recent years, the average annual output of coal in the world has reached about 7.5 billion tons. Gas and coal dust explosions caused by coal spontaneous combustion occur from time to time, and the direct economic losses caused by coal spontaneous combustion amount to billions of dollars every year, while indirect losses such as ecological environment degradation and air pollution are difficult to estimate. At present, fire prevention and extinguishing technologies for preventing coal spontaneous combu...

AI Technical Summary

Problems solved by technology

[0005] (1) After the existing fire extinguishing gel is used, it only prevents the open fire at that time, and cannot continue to capture the spontaneous combustion of coal generated during coal mining, storage, loading and unloading, and transportation, and it is difficult to achieve the desired effect

[0006] (2) At present, coal mine fire prevention gel does not use natural polymer materials

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