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Thickening colloid for coal bed fire hazard treating

A thickening and colloidal technology, applied in fire rescue, fire prevention equipment, etc., can solve the problems of poor adhesion, water retention and water binding, easy blockage of conveying pipelines, large loss of slurry, etc., and achieve good adhesion , Improve fire extinguishing effect, good fluidity effect

Inactive Publication Date: 2007-02-07
西安森兰科贸有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, loess and water are easy to separate, not only easy to block the pipeline, but also the separated water is easy to vaporize during fire extinguishing, and the generated water vapor reacts with high-temperature coal to form water gas, so there is a hidden danger of explosion, which poses a great threat to underground safety.
In addition, the existing yellow mud has poor adhesion, water retention and water binding, large slurry loss, low grouting efficiency, and poor fire prevention effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Take 36 parts of a certain amount of water and divide them into four groups, each aggregate is one group, and each group has 9 samples. The aggregates of each group are fly ash, loess, sand and stone powder with a diameter of less than 1mm in the same amount as water, and 9 samples in each group are firstly added with 2% water weight sodium carboxymethyl cellulose, Ethyl cellulose sulfonate, carboxymethyl hydroxyethyl cellulose, methyl cellulose, carboxyethyl methyl cellulose, hydroxypropyl methyl cellulose, hydroxybutyl methyl cellulose, hydroxyethyl cellulose and hydroxy Propyl cellulose, then add aggregate, and stir evenly to obtain four groups of 36 thickened colloid samples.

[0013] The above-mentioned thickened colloids have been tested: the thickened colloids have been suspended for more than 24 hours without sedimentation, the fluidity is 250-280 mm, and the viscosity is 40-50 mPa.s, which fully meets the requirements for fire prevention and extinguishing.

[...

Embodiment 2

[0017] Aggregate, thickener and sample grouping are the same as in Example 1, wherein the addition of aggregate accounts for 40% of the water weight, and the addition of the thickener accounts for 3% of the water weight. The test results are: the standing suspension time is more than 24 hours, the fluidity is 270-290mm, and the viscosity is 35-45mPa.s.

Embodiment 3

[0019] Aggregate, thickener and sample grouping are the same as in Example 1, wherein the addition of aggregate accounts for 140% of the water weight, and the addition of the thickener accounts for 1% of the water weight. The test results are: the standing suspension time is more than 24 hours, the fluidity is 240-250mm, and the viscosity is 40-50mPa.s.

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Abstract

The invention relates to a dense colloid used in fire hazard treatment in coal layer, wherein it is formed by water, skeleton, and densifier; the skeleton is one of cola ash, loess, sand or stone powder; the densifier is one or several of carboxymethyl cellulose, cellulose ethyl ether, carboxymethyl hydroxyethyl cellulose, cellulose methyl, carboxyethyl cellulose, hydroxypropyl cellulose methyl, butyl cellulose, glycol cellulose, and hydroxypropyl cellulose; when using, mixing the water, densifier, and skeleton to be poured into fire area. The inventive colloid has strong water kept ability, and better adhesive with the coal, to effectively pack high-temperature coal, and improve the fire extinction effect; and the water and skeleton are not easily separated, to prolong the cooperation between them, reduce the evaporate speed of said product in high temperature to avoid explode water gas.

Description

technical field [0001] The invention belongs to the field of anti-fire extinguishing materials, in particular to a thickened colloid used for coal seam fire control. Background technique [0002] The main reason for the coal seam to catch fire naturally is that there are cracks in the coal seam, the air enters the coal seam along with the cracks, oxygen reacts with some free radicals to release heat, and when the heat accumulates to the ignition point, spontaneous combustion occurs. Yellow mud grouting is one of the most important means of fire prevention and extinguishing in coal mines. Its principle is that the water in the mud absorbs a large amount of heat, which plays a role in extinguishing fire and cooling down. The loess covers the surface of floating coal and acts as an oxygen barrier to prevent oxidation. The existing yellow mud grouting is to make mud with loess and water, and then pour it into the fire zone to put out the fire. However, loess and water are easy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00A62C3/02
Inventor 文虎张辛亥刘鑫邓军张平丽徐林生
Owner 西安森兰科贸有限责任公司
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