Chemical fire retartant for preventing controlling coil mineral well coal self-igniting

Abstract

The invention provides a chemical inhibitor for preventing spontaneous combustion of coal in coal mines. The chemical inhibitor is an aqueous solution composed of 0.5-1% surfactant, 0.1% polymer resin and a certain concentration of oxidant, and the pH value is Between 3 and 5. In the process of coal mining, water is pre-injected into the coal seam, and the chemical inhibitor solution is sprayed on the coal left behind the coal mining face and other places prone to fire, and the chemical inhibitor can also be added to other fire-proof materials as additives for easy injection. fire area. The role of the inhibitor makes the different active structures and groups in the coal body oxidized and undergoes irreversible reactions, thus losing the low-temperature oxidation property, reducing the spontaneous combustion tendency of the coal, thereby completely preventing the spontaneous combustion of the coal, simple operation, convenient and economical materials, Suitable for underground operations in mines.

Description

technical field [0001] The invention relates to a chemical inhibitor for preventing spontaneous combustion of coal in coal mines, in particular to a chemical inhibitor for preventing spontaneous combustion of coal in coal mines. Background technique [0002] Coal spontaneous combustion is one of the major disasters in coal mines. Among the key state-owned coal mines in our country, mines with serious coal spontaneous combustion account for 56% of the total number of mines, and fires caused by coal spontaneous combustion account for 90-94% of the total number of mine fires. Coal spontaneous combustion seriously threatens the safe production of coal mines, and may also cause gas explosions causing heavy casualties, damage to resource equipment and causing major economic losses. [0003] The main principle of preventing coal spontaneous combustion is to prevent the occurrence of coal oxidation process and eliminate heat accumulation. Physical type inhibitors are mainly inorga...

AI Technical Summary

Problems solved by technology

However, foods are generally protein and fat substances, which are quite different from coal in their physical and chemical structures. At the same time, antioxidants are also easy to oxidize, and the time of antioxidant action is short, while the low-temperature oxidation of spontaneous combustion of coal takes dozens of days or even months. process, so the use of antioxidants as coal spontaneous combustion retardants also has many shortcomings, there is no theoretical basis, and the effect is poor