Circulation closed coal mine goaf inert gas generator

Abstract

The invention discloses a cyclic closed type inert gas generating device of coal mine goaf. The device comprises a gas generating unit, a detecting unit, a cooling unit and a controller, wherein the gas generating unit comprises an inert gas generating furnace and a burning powder automatic feeding unit communicated with the inert gas generating furnace; the detecting unit comprises a gas concentration and O2 gas analyzer; the cooling unit comprises at least one group of cooling filters. According to the device, gas and carbon monoxide gas in protected space of the coal mine goaf are pumped out and burned through the inert gas generating furnace and the generated inert gas is pumped into the protected relatively closed space of the coal mine goaf, so that the demand for the burning powder resource in the device is reduced to a certain degree, the effect of waste utilization is provided and the intrinsic safety of the protected relatively closed space in the coal mine goaf is guaranteed in an active protection way.

Description

technical field [0001] The invention belongs to the technical field of fire safety, and in particular relates to an active safety fire protection technology, in particular to an inert gas generator for active safety protection of a protected confined space in a coal mine goaf. Background technique [0002] Inert gases such as carbon dioxide, IG541, and heptafluoropropane have been used as fire extinguishing media. Once used up, they must be replenished in time, which increases maintenance costs and time costs. [0003] Goaf gas is the most serious disaster in my country's coal mines in the process of coal mining. Affected by unstable geology, once the conditions change suddenly in the depths of the coal seam in the goaf, gas will burst out instantly with thousands of tons of coal, causing serious disasters. Spontaneous combustion in coal mines seriously threatens the safe production of coal mines and restricts the production of coal mines, and the spontaneous combustion of ...

AI Technical Summary

Problems solved by technology

[0002] Inert gases such as carbon dioxide, IG541, and heptafluoropropane have been used as fire extinguishing media, but once used up, they must be replenished in time, which increases maintenance costs and time costs

However, due to the storage and transportation of carbon dioxide, it is necessary to build a large liquid storage tank. Once the liquid carbon dioxide in the tank is used up, it needs to be replenished in time, which increases the transportation cost and time cost of carbon dioxide replenishment, and the gas and carbon monoxide replaced by carbon dioxide And other flammable gases need to be further treated, if they are directly discharged, they will pollute the environment

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