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A magnetization-based permeation-enhancing wetting agent for improving the effect of coal seam water injection and dust reduction

A coal seam water injection and wetting agent technology, applied in the direction of dust prevention, other chemical processes, chemical instruments and methods, etc., can solve the problems of coal plasticity increase, not easy to be infiltrated, brittle weakening, etc., to improve permeability and increase infiltration Range, the effect of reducing the surface tension of substances

Active Publication Date: 2020-05-19
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a magnetization-based wetting agent for improving the effect of coal seam water injection and dust reduction. The surface tension of the solution increases the penetrability of the solution at the same time, which makes the magnetization-based wetting agent easily infiltrate from the surface of the coal seam into the tiny pores of the coal body, expand the penetration range in the coal seam, and perform more efficient wetting of the coal seam ; Effectively solve the problem that the coal seam is not easy to be wetted and infiltrated. By changing the physical and mechanical properties of the coal body, the plasticity of the coal body is increased and the brittleness is weakened, the efficiency of water injection in the coal seam is improved, and the generation of coal dust is reduced.

Method used

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  • A magnetization-based permeation-enhancing wetting agent for improving the effect of coal seam water injection and dust reduction

Examples

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Effect test

Embodiment 1

[0024] Example 1: Weigh 30 parts of sodium chloride, 9 parts of fatty alcohol polyoxyethylene ether, 12 parts of alkylphenol ether sulfosuccinate sodium salt, and 15 parts of polyethylene glycol, and prepare it as 1% by weight Additive solution, the solution flows into a special magnetized barrel at a flow rate of 2m / s, and after being magnetized in a 400mT magnetic field for 10 minutes, a magnetization-based penetration-enhancing wetting agent is obtained, which is prepared into an additive solution with a mass fraction of 0.005%, and its surface tension, Contact angle.

Embodiment 2

[0025] Embodiment 2: Take by weighing 30 parts of sodium chloride, 9 parts of dioctyl sodium sulfosuccinate, 10 parts of dioctyl sodium maleate sulfonate, and 15 parts of polyethylene glycol, and prepare the mass fraction It is a 1% additive solution. The solution flows into the special magnetization bucket of the magnetizer at a flow rate of 2m / s. After being magnetized in a 500mT magnetic field for 15 minutes, a magnetization-based wetting agent for increasing penetration is obtained, which is formulated as an additive with a mass fraction of 0.005%. solution, its surface tension and contact angle were measured.

Embodiment 3

[0026] Example 3: Weigh 9 parts of fatty alcohol polyoxyethylene ether, 9 parts of dioctyl sodium sulfosuccinate, 30 parts of sodium chloride, 15 parts of polyethylene glycol and mix them uniformly with water to form a mass fraction of 1%. The additive solution flows into the special magnetization bucket of the magnetizer at a flow rate of 2m / s, and is magnetized in a 400mT magnetic field for 10 minutes; weigh 12 parts of alkylphenol ether sulfosuccinate sodium salt, di-secondary maleic acid 10 parts of sodium octyl sulfonate, 30 parts of sodium chloride, 15 parts of polyethylene glycol and water are uniformly mixed to prepare an additive solution with a mass fraction of 1%, and flow into the special magnetization bucket of the magnetizer at a flow rate of 2m / s. Magnetize in a 500mT magnetic field for 15 minutes; uniformly mix the obtained two kinds of magnetization-based penetration-enhancing wetting agents, and prepare an additive solution with a mass fraction of 0.005% with ...

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Abstract

The invention discloses a magnetic anatonosis wetting agent capable of improving a dust reduction effect of coal seam water injection. The magnetic anatonosis wetting agent is characterized by comprising the following components in parts by weight: 30-50 parts of inorganic electrolyte (sodium chloride), 9-14 parts of a magnetic penetrant fatty alcohol-polyoxyethylene ether (carbon chain length of7-9), 7-12 parts of a magnetic penetrant sodium diethylhexyl sulfosuccinate, 10-15 parts of a magnetic wetting agent alkylphenol ether sulfonylsuccinate sodium salt, 10-20 parts of polyethylene glycoland the balance of water. After the magnetic anatonosis wetting agent is injected into a coal seam, the water infiltration capability can be enhanced, the spreading range of water in the coal seam isexpanded, and the water injection effect is greatly improved. The magnetic anatonosis wetting agent is suitable for wide-range application to underground coal seam water injection due to the characteristics of simple and feasible preparation method, good dust reduction effect, convenient operation and low cost.

Description

technical field [0001] The invention relates to a coal dust inhibitor, which belongs to the technical field of coal mine dust prevention, in particular to a magnetization-based wetting agent for improving the dust reduction effect of coal seam water injection. Background technique [0002] China's coal mining volume has long been ranked first in the world. As an important means of dust prevention, coal seam water injection has a history of more than 120 years. It was used on a large scale in the 1950s and 1960s because of its effective and immediate dust prevention effect. And is still in use today. The coal seam water injection technology injects pressure water and aqueous solution into the coal body through drilling holes to increase the water content to change the physical and mechanical properties of the coal, thereby achieving the purpose of reducing the generation of coal dust. However, the coal body is usually hydrophobic and difficult to be wetted by water, so some ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/22E21F5/02
CPCC09K3/22E21F5/02
Inventor 王和堂轩吴凡张祖卓李佳郑晗秦波涛
Owner CHINA UNIV OF MINING & TECH
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