Coal mine fire prevention and extinguishing method using pit mouth power plant flue gas

A technology for pit-head power plants and fire prevention, which is applied in the fields of fire prevention, dust prevention, mining equipment, etc., can solve the problems of energy consumption and high nitrogen production cost, and achieve the effect of saving energy waste, low cost and reducing emissions.

Active Publication Date: 2015-12-09
DATONG COAL MINE GRP
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Problems solved by technology

Nitrogen injection to prevent and extinguish fires has been widely used in coal mines, but the cost of nitrogen production is high and consumes a lot of energy

Method used

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  • Coal mine fire prevention and extinguishing method using pit mouth power plant flue gas
  • Coal mine fire prevention and extinguishing method using pit mouth power plant flue gas
  • Coal mine fire prevention and extinguishing method using pit mouth power plant flue gas

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Embodiment Construction

[0014] The coal mine fire prevention and extinguishing method utilizing pit mouth power plant flue gas of the present invention, as figure 1 As shown, the flue gas is taken from the outlet of the desulfurization tower 1 of the coal mine pit mouth power plant. The flue gas passes through the flue gas pretreatment system 2 for denitration, dehumidification, cooling, and dust removal. The system is pressurized to inject flue gas downhole. Since the flue gas directly discharged from the power plant contains some harmful pollutants, in order to ensure the safety of the flue gas injection downhole and the safety of pipeline transportation, this part of the flue gas injected into the downhole needs denitrification, dehumidification, cooling, and dust removal to achieve flue gas injection. condition. The pretreated flue gas needs to be transported underground through pressurized pipelines.

[0015] Take Tashan Coal Mine of Tongmei Group Datang as an example below to describe the pre...

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Abstract

The invention discloses a method for preventing and extinguishing fire of a coal mine through pithead power plant flue gas. The method includes: collecting flue gas from an outlet of a desulfurizer of a pithead power plant of the coal mine, performing denitration, dehumidification, cooling and dedusting treatment on the flue gas through a flue gas pre-treatment system, enabling the flue gas to enter a conveying and smoke filling system, pressurizing the flue gas through the smoke filling system, and filling the flue gas under a well. The flue gas of the pithead power plant is directly filled into an underwell goaf through a pipeline, the flue gas is combustion product, the oxygen content is low, and the aim of effectively preventing and controlling coal spontaneous combustion can be achieved. The flue gas belongs to industrial waste, and compared with the traditional nitrogen generation technology, the method for preventing and extinguishing fire of the coal mine is low in cost, saves energy caused by nitrogen generation, saves a large amount of capitals for enterprises, and reduces discharging of the carbon dioxide in the air by blocking partial carbon dioxide due to large carbon dioxide adsorbing capacity of coal.

Description

technical field [0001] The invention relates to the technical field of coal mine safety production, in particular to a coal mine fire prevention and extinguishing method. Background technique [0002] Coal mines with spontaneous combustion hazards are widely distributed in our country, and exist in almost all coal mining areas. Mining areas such as Yanzhou, Shendong, Pingdingshan, Kailuan, Xinwen, Yima, Datong, Fushun, Fuxin, Tiefa, Xuzhou, and Tongchuan are seriously at risk of spontaneous fires. There are also 12 open-pit mines that belong to spontaneous combustion hazard mines. In my country's key state-owned coal mines, mines with coal spontaneous combustion account for 56% of the total number of mines, and fires caused by coal spontaneous combustion account for 90% to 94% of the total number of mine fires. In 7 provinces and autonomous regions including Xinjiang, Ningxia, Inner Mongolia, Gansu, Qinghai, Shaanxi, and Shanxi, the cumulative burning area of ​​coalfield f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F5/00
Inventor 于斌王立兵邓存宝杨智文王爱国孟凡龙宋金旺乔建军赵君景珂宁
Owner DATONG COAL MINE GRP
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