A New Method of Preventing Coal Dust Explosion in Underground Coal Mine

A coal dust and coal mine technology, applied in the field of preventing explosions in coal mines, can solve problems such as coal dust, and achieve the effects of eliminating coal dust, saving manpower, material and financial resources, and reducing the concentration of coal dust

Inactive Publication Date: 2011-11-30
梁红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology helps remove harmful particles from flue gases that may be emitted during excavation processes or when burning fossil fuels for energy production. It uses water with low levels of colored vinyl acetate added thereto, making it effective at removing fine particulate matter (PM) while also being safe enough without causing damage to equipment such as pumps used in transport systems. Additionally, this process does away completely any unwanted substances like chlorine dioxide produced through combustion reactions. Overall, these technical benefits help improve safety measures on site and prevent accidental fires caused by high concentrations of carbon monoxide released over time.

Problems solved by technology

The technical problem addressed by these inventions relates to reducing or eliminating dangerous conditions caused when burning coal at high altitudes where there may exist explosive mixtures like sulfur-bearings (S) compounds called pyritolumines). Existing techniques have limitations including false alarms and poor efficiency.

Method used

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Embodiment Construction

[0012] Take industrial polyvinyl alcohol to prepare 0.5% polyvinyl alcohol aqueous solution; low-pressure spray gun A is installed behind the excavator head; low-pressure spray gun B is installed above the conveyor belt loader; low-pressure spray gun C is hand-held by miners; , Coal dust inspectors carry it with them. While the excavator is working, low-pressure spray gun A sprays 0.5% polyvinyl alcohol aqueous solution to the coal dust in the air of the mining face and its vicinity; while the conveyor belt loader is working, low-pressure spray gun B sprays the coal dust generated during the loading process of the conveyor belt 0.5% polyvinyl alcohol aqueous solution; at the same time, miners hold a low-pressure spray gun C to spray 0.5% polyvinyl alcohol aqueous solution to the coal dust in the air near the working face; Spray 0.5% polyvinyl alcohol aqueous solution on the roadway, both sides of the conveyor belt, etc. Since polyvinyl alcohol is a high molecular polymer, mist p

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Abstract

The invention relates to a new method for preventing coal dust explosion under a coal mine shaft. The method is characterized in that a low-pressure spray gun or sprayer is used for spraying a polyvinyl alcohol aqueous solution at a concentration of 0.5% on a working face, a conveyor belt and the places on which the coal dust is deposited; as polyvinyl alcohol is a high polymer, the atomized polyvinyl alcohol can bond and absorb the coal dust particles and the particles quickly fall onto the ground, thus effectively reducing the concentration of the coal dust in the air; and the coal dust canbe hardened and lose explosibility even if the coal dust is air-dried again, thus effectively eliminating the coal dust in the air thoroughly and preventing the coal dust explosion accident under theshaft. The new method has the following beneficial effects: the cleaning method and the water sprinkling and flushing method can be no longer used and the rock dust is unnecessary to be distributed, thus saving the manpower, materials resources and financial resources; and the coal dust in the air under the shaft is eliminated so that the lower explosion limit of gas is forced to be improved, thus indirectly reducing the gas explosion accidents.

Description

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Claims

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Application Information

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