High power inhibition foam for preventing and controlling coal self-ignition and generating device thereof

Abstract

The present invention provides a high power inhibition foam capable of preventing and controlling coal self-combustion and its generation equipment. It is characterized by that the pressure water flow is mixed with high power inhibition foam raw liquor according to a certain ratio, then their mixture is fed into a spray mixer under the action of negative pressure formed by water pressure and gas with a certain pressure in sprayer, and the gas, water and high power inhibition foam raw liquor can be fed into a foaming device by means of spraying mode under the gas pressure so as to make foam formation. Said foam can be used for covering coal body, and can be used for preventing coal self-combustion.

Description

technical field [0001] The invention relates to a chemical inhibitor for preventing coal spontaneous combustion, in particular to a high-intensity resistance foam for preventing coal spontaneous combustion and a generating device thereof. Background technique [0002] Coal spontaneous combustion is one of the major disasters in coal mines and coal storage and transportation. Among the key state-owned coal mines in my country, coal mines with serious coal spontaneous combustion account for more than half of the total number of mines, and fires caused by coal spontaneous combustion account for more than 90% of the total number of mine fires. Coal spontaneous combustion seriously threatens the safe production of mines, and may also cause gas explosions, casualties, resource destruction, and significant economic losses. The general prevention and control method of coal spontaneous combustion is to prevent the occurrence of coal oxidation process and eliminate heat accumulation....

AI Technical Summary

Problems solved by technology

These technologies have played an important role in ensuring the safe production of mines, but there are still some problems: yellow mud grouting will consume a large amount of farmland, the plugging effect of fly ash is poor, and the cost of gangue pulping is high; the water glass-ammonium salt gel produces toxic and smelly ammonia gas, high polymer gel cost; cement mortar, high water materials, foam resin not only high cost but also complicated process; inert gas is easy to diffuse with air leakage, and is not easy to stay in the injected area

In recent years, China University of Mining and Technology has developed the technology of three-phase foam to prevent coal spontaneous combustion, but it has no obvious inhibition effect, so it is not suitable for the prevention of coal spontaneous combustion, and prevention is very important for the prevention and control of coal spontaneous combustion

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