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Preparation method of wet-type dust removal agent for reducing coal dust

A technology for dust removal agent and dust is applied in the field of preparation of wetting type dust removal agent, which can solve problems such as coal dust exceeding the standard, achieve the effects of less corrosiveness, improve dust reduction efficiency, and improve working environment

Active Publication Date: 2016-01-20
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-cost, non-toxic, high-efficiency preparation method of a wet-type dedusting agent for reducing coal dust, so as to solve the problem that coal dust exceeds the standard no matter how the basic parameters of the nozzle are changed.

Method used

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Examples

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Effect test

preparation example Construction

[0020] The preparation method of the wet-type dedusting agent is to add the synergist agent into the aqueous solution of anionic surfactant at a temperature of 20-80°C, reflux and stir, and cool to room temperature to obtain component (A); put the water-retaining agent into the water solvent In the process, component (B) is obtained; the mass ratio of the contained solvent is 1-3:1 component (A) and component (B) are directly mixed and stirred evenly at room temperature; spraying at the coal mining site can effectively reduce a large amount of Dust; specific steps are as follows:

[0021] (1) using water as a solvent, adding 0.02-0.20wt% of anionic surfactant to the solvent, taking the total amount of the contained solvent as 100wt%, and mixing uniformly to obtain an anionic surfactant solution;

[0022] (2) At a constant temperature of 20-80°C, add 0.01-0.20wt% synergist to the above-mentioned anionic surfactant solution, based on the total amount of solvent contained as 100w...

Embodiment 1

[0031] 1. Preparation of Dedusting Agent Solution

[0032] (1) Take water as solvent, add 0.08wt% anionic surfactant in solvent, mix uniformly, obtain anionic surfactant solution; the total amount of contained solvent is 100wt% meter;

[0033] (2) At a constant temperature of 20-80°C, add 0.08wt% synergist to the above-mentioned anionic surfactant solution, reflux and stir for 30 minutes; the corresponding mixed emulsion is obtained, and the total amount of solvent contained is 100wt% count;

[0034] (3) Put the water-retaining agent inorganic salt (metal cation) into water, the water-retaining agent and the solvent are added at a ratio of 1%wt and stir for 10-20 minutes to obtain component (B); the water-retaining agent inorganic salt is a metal cation;

[0035] (4) Before use, the component (A) and component (B) with a solvent mass ratio of 1:1 are directly mixed and stirred at room temperature to obtain a dedusting solution.

[0036] 2. Dust removal effect

[0037] In th...

Embodiment 2

[0039] 1. Preparation of Dedusting Agent Solution

[0040] (1) Take water as a solvent, add 0.10wt% anionic surfactant to the solvent, mix uniformly, and obtain anionic surfactant solution; the total amount of contained solvent is 100wt%;

[0041] (2) At a constant temperature of 20-80°C, add 0.10wt% synergist to the above-mentioned anionic surfactant solution, reflux and stir for 30 minutes; obtain the corresponding mixed emulsion; the total amount of solvent contained is 100wt% count;

[0042] (3) Put the water-retaining agent inorganic salt (metal cation) into water, add the water-retaining agent to the solvent at a ratio of 1% wt and stir for 10-20 minutes to obtain component (B);

[0043] (4) Before use, directly mix and stir component (A) and component (B) at room temperature with a solvent mass ratio of 5:4 to obtain a dust removal solution; the water-retaining agent inorganic salt is a metal cation .

[0044] 2. Dust removal effect

[0045] In the dust fall experim...

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Abstract

The invention relates to a preparation method of a wet-type dust removal agent for reducing coal dust. The dust removal agent is prepared by adopting 0.02 to 0.20 percent by weight of anionic surface active agent fast seepage T (according to 100 percent by weight of solvent contained in a component A), 0.01 to 0.20 percent by weight of nonionic surface active agent, a solvent contained in a component B and 0.2 to 2.0 percent by weight of water retention agent (according to 100 percent by weight of the solvent contained in the component B), a mass ratio of the solutions contained in the component A and the component B is (1 to 3): 1. The preparation method of the dust removal agent comprises the following steps: adding the nonionic surface active agent into an anionic surface active agent solution, refluxing, stirring, and cooling to the room temperature to obtain the component A; adding the water retention agent into the solvent to obtain the component B, directly mixing and uniformly stirring the component A and the component B with the mass ratio of the contained solvents of (1 to 3): 1 at the room temperature; and spraying the wet-type dust removal agent at a coal mining site, so that a great amount of dust can be effectively reduced. The preparation method has the characteristics of low cost, non-toxicity and high efficiency.

Description

technical field [0001] The invention relates to a preparation method of a dust remover for reducing coal dust, in particular to a preparation method of a wet type dust remover for reducing coal dust. Background technique [0002] According to statistics, if no dust prevention measures are taken, the coal dust concentration in the fully mechanized mining face can reach 2500-3000mg / m 3 , and the situation of the fully mechanized caving face is more serious than that of the general fully mechanized mining face. In some coal mines, the instantaneous total dust concentration is as high as 8000-10000mg / m 3 . Although many coal mines have taken certain measures, the situation in most working faces is still not optimistic, and the dust concentration in the downwind direction of some coal mining machines reaches 1000mg / m 3 The above has seriously exceeded the national standard. It is not difficult to see that how to adopt effective methods to prevent and control mine coal dust has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22
CPCC09K3/22
Inventor 吴国光孟献梁褚睿智刘晖
Owner CHINA UNIV OF MINING & TECH
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