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

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 ...

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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.

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