Additive for fast water injection of strong hydrophobic coal roadway short hole and preparation method of additive

An additive and hydrophobic technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of complex use process, poor wetting effect of strongly hydrophobic coal roadway, unsuitable for large-scale application, etc.

Pending Publication Date: 2022-07-26
HUAIBEI MINING IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to make up for the above deficiencies, this application provides an additive for short-hole rapid water injection in strong hydrophobic coal roadways and its preparation method, which aims to improve the coal seam water injection technology. The wetting speed is slow, and water injection in the tunneling face cannot be performed; the current additives have poor wetting effect on strongly hydrophobic coal roadways, and it is difficult to achieve the effect of rapid water injection. The production and use of existing coal seam water injection additives are complicated, and the long-term use cost is high , not suitable for large-scale applications and other issues

Method used

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  • Additive for fast water injection of strong hydrophobic coal roadway short hole and preparation method of additive
  • Additive for fast water injection of strong hydrophobic coal roadway short hole and preparation method of additive
  • Additive for fast water injection of strong hydrophobic coal roadway short hole and preparation method of additive

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preparation example Construction

[0050] A preparation method for a short-hole rapid water injection additive for a strong hydrophobic coal roadway, comprising the following method steps:

[0051] S1. Heat the inorganic salt solution by hot melting to a viscous state: first, put a small amount of water in a beaker, place the beaker on a closed electric furnace, boil the water, add inorganic salt, and boil the inorganic salt solution to a viscous state;

[0052] S2. Then add a wetting agent and a coagulant to the solution: first add a wetting agent to the inorganic salt solution, and then add a quantitative amount of octylphenyl polyoxyethylene ether and a-alkenyl sodium sulfonate to it. The stick is stirred slowly in one direction until the formula is well mixed;

[0053] S3. Mold the mixed molten solution: quickly pour the mixed solution into the mold, put it in a cool place, wait for 2 hours, and then release the mold.

[0054] In the above implementation process, the inorganic salt can be effectively disso...

Embodiment 1

[0060] A fast water injection additive for short holes in strong hydrophobic coal lanes and a preparation method thereof, in terms of mass percentage, comprises: 3% of wetting agent, 97% of coagulant, and is prepared as a solid additive through a thermal synthesis process.

[0061] The specific steps are:

[0062] 1) First, put a small amount of water in a beaker, put the beaker on a closed electric furnace, boil the water, add 97g of inorganic salt, and boil the inorganic salt solution to a viscous state;

[0063] 2) Add calcium chloride to the inorganic salt solution, then add 3g of the compound solution of octylphenyl polyoxyethylene ether and sodium a-alkenyl sulfonate, and slowly stir with a glass rod in one direction until the formula is mixed uniform;

[0064] 3) Pour the formula into the mold quickly, put it in a cool place, wait for 2 hours, and then release the mold, and the preparation of the additive for rapid water injection in the short hole of the strong hydrop...

Embodiment 2

[0066] The invention discloses an additive for fast water injection with short holes in strong hydrophobic coal lanes and a preparation method thereof. In mass percentage, the additive comprises: 5% of wetting agent, 95% of coagulant, and is prepared into a solid additive formula through a thermal synthesis process.

[0067] The specific steps are:

[0068] 1) First, put a small amount of water in a beaker, put the beaker on a closed electric furnace, boil the water, add 95g of inorganic salt, and boil the inorganic salt solution to a viscous state;

[0069] 2) Add calcium chloride to the inorganic salt solution, then add 5g of the compound solution of octylphenyl polyoxyethylene ether and a-alkenyl sodium sulfonate, and slowly stir with a glass rod in one direction until the formula is mixed uniform;

[0070] 3) Pour the formula into the mold quickly, put it in a cool place, wait for 2 hours, and then release the mold, and the preparation of the additive for rapid water inje...

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Abstract

The invention provides a rapid water injection additive for a strong hydrophobic coal roadway short hole, and the rapid water injection additive is prepared from the following components in percentage by mass: 3%-5% of a wetting agent and 95%-97% of a coagulator, and the water injection additive is prepared into a solid additive through a thermal synthesis process, the invention further discloses a preparation method of the additive for rapid water injection of the strong hydrophobic coal roadway short hole. The preparation method comprises the following steps: S1, carrying out hot melting and heating on an inorganic salt aqueous solution to a viscous state; s2, adding a wetting agent and a coagulating agent into the solution; and S3, the mixed molten solution is subjected to fixed mold forming. On the basis of physicochemical properties of a strong hydrophobic coal body, a wetting agent solution with excellent properties is selected, the wettability of a coal seam is improved, solid setting is performed by adopting a thermal synthesis process, the additive is effectively prepared, the process is simple, preparation is convenient and rapid, the preparation process is simple, and operation and implementation are convenient.

Description

technical field [0001] The present application relates to the technical field of coal mines, in particular, to a fast water injection additive for short holes in strong hydrophobic coal roadways and a preparation method thereof. Background technique [0002] In recent years, the coal industry has also developed rapidly. With the large-scale application of mechanized equipment, the amount of dust produced in the underground production process also increases. Among them, the amount of dust generated in the mining and excavation links is the largest, and the proportion of dust generated in the coal roadway driving face is as high as 20% - 38%. , Dustproof is difficult, resulting in a large amount of dust floating in the air. Long-term work in an environment with high dust concentration will endanger the health of workers. At the same time, a large amount of dust in the underground air will reduce the visibility of the air, accelerate mechanical wear, and shorten the life of e...

Claims

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Application Information

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IPC IPC(8): C09K8/528C09K8/86
CPCC09K8/528C09K8/86
Inventor 吴瀚陈长岭张生郜光辉丁尧刘建国王天暘林明磊
Owner HUAIBEI MINING IND
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