Three-phase foam preparing system for preventing coal self-ignition

A preparation system and coal spontaneous combustion technology, applied in dust prevention, mining equipment, fire prevention, etc., can solve the problems of continuous formation of three-phase foam, restrictions on the promotion and use of three-phase foam, not three-phase foam, etc., and achieve wide practicability , small footprint, good effect

Inactive Publication Date: 2006-05-24
CHINA UNIV OF MINING & TECH
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Problems solved by technology

For this reason, engineers and technicians in this field have developed a three-phase foam device for spontaneous combustion of coal, which has been applied in the field and achieved good results. However, the device can only stir to produce three-phase foam, not three-phase foam A complete set of preparation system, so other auxiliary equipment is required when using
In addition, due to the special environment and conditions of the coal mine, the slurry contains impurities or large solid particles, and the device often blocks the pipe, resulting in the inability to continuously form three-phase foam.
Due to the defects of the above two conditions, the promotion and use of three-phase foam in mines is limited

Method used

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  • Three-phase foam preparing system for preventing coal self-ignition

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Embodiment Construction

[0009] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0010] The present invention is a three-phase foam preparation system for preventing coal spontaneous combustion, which is mainly composed of a filter 3, a stirrer 8, a foamer 9 and a bypass pipe 6, the bypass pipe 6 is connected between the grouting pipe 1 and the filter At the inlet where the device 3 is connected, the tail of the bypass pipe 6 is connected with the through pipe at the outlet of the foamer 9, and the inlet and the outlet of the bypass pipe 6 are provided with a valve 10. The filter 3, the stirrer 8 and the foamer 9 are connected in sequence, the inlet of the filter 3 is provided with a valve 2, the filter 3 is composed of a connecting pipe and a filter screen 4 in the connecting pipe, and the outer diameter of the filter 3 is 20mm~ 400mm, the mesh size of the built-in filter 4 is 50mm 2 ~80mm 2 ; The lower part of the connecting pipe at...

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Abstract

A three-phase foam preparing system for preventing coal spontaneous combustion consists of agitator, foam generator, filter connected with agitator and foam generator, air inlet in wall of foam generator, nitrogen injection device, air compressor, bypass pipe on slurry injection pipe. The prepared slurry is filtered then pressed into air or nitrogen, foaming to form air-liquid-solid three-phase foam. Said invention has high foaming efficiency.

Description

1. Technical field [0001] The invention relates to a three-phase foam preparation system for preventing coal spontaneous combustion, and is especially suitable for coal spontaneous combustion prevention and fire extinguishing in mines. 2. Background technology [0002] Coal spontaneous combustion is one of the main natural disasters in mines in my country. For this reason, engineers and technicians in this field have developed a three-phase foam device for spontaneous combustion of coal, which has been applied in the field and achieved good results. However, the device can only stir to produce three-phase foam, not three-phase foam A complete set of preparation system, so other auxiliary equipment is required when using it. In addition, due to the special environment and conditions of the coal mine, the slurry contains impurities or large solid particles, and the device often blocks the pipe, resulting in the inability to continuously form three-phase foam. Due to the defe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/02
Inventor 王德明秦波涛任万兴
Owner CHINA UNIV OF MINING & TECH
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