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

A foam generating device and coal spontaneous combustion technology, applied in safety devices, dust prevention, fire prevention, etc., can solve problems such as unsuitable for coal spontaneous combustion prevention, high cost, difficult to stay, etc., to achieve economical and efficient coal spontaneous combustion, prevention of coal spontaneous combustion, The effect of good fluidity

Active Publication Date: 2007-08-22
CHINA COAL TECH ENG GRP CHONGQING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 pr

Method used

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

Examples

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Example Embodiment

[0016] The preparation examples of the present invention will be further described below with reference to the accompanying drawings: as shown in Figure 1, the high-power foam generating device for preventing spontaneous combustion of coal provided by the present invention has a suction pipe 2, a venturi pipe 6, and a mixer. 9. Foamer 10 and bubble equalizer 11. The mixer 9 is a jet-type negative pressure mixer. The inlet end of the mixer 9 is connected to the pressure air pipe 7, and the outlet end is connected to the foamer 10; the foamer 10 is an inclined baffle vortex foamer through which the foamer 10 passes The bubble equalizer 11 is connected with the foam outlet pipe 12; the inlet end of the venturi pipe 6 is connected with the pressure water flow pipe 4, and the outlet end is connected with the throat of the mixer 9 through a bypass pipe; one end of the suction pipe 2 extends into the original liquid tank 1 , The other end is connected to the throat of the Venturi tube 6....

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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....

Claims

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Application Information

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IPC IPC(8): E21F5/08
Inventor 陆伟奚志林
Owner CHINA COAL TECH ENG GRP CHONGQING RES INST
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