Coal flow dust suppressant as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of control for coal flow flying dust and particularly relates to a coal flow dust suppressant as well as a preparation method and an application thereof. The coal flow dust suppressant comprises components in parts by weight as follows: starch-grafted acrylic polymer, a surfactant and water. The coal flow dust suppressant has good coagulation property,wettability and permeability, dust particles are wetted rapidly and coagulated together, grain size and weight of the dust particles are increased, meanwhile, the coal flow dust suppressant can rapidly permeate into the coal flow, and the dust suppression effect is realized. According to the coal flow dust suppressant, the technical defect of low dust suppression speed of a traditional dust suppressant can be effectively overcome.

Description

technical field

[0001] The invention belongs to the technical field of coal flow dust control, and in particular relates to a coal flow dust suppressant and its preparation method and application. Background technique

[0002] Coal flow refers to the coal conveying system. During the transportation of coal on the belt, it is easy to generate dust, resulting in waste of resources and environmental pollution. Dust dynamic coal flow can be divided into advection dust and downflow dust. During the movement of the belt, the air on both sides of the belt will generate traction airflow with the movement of the belt. Due to the viscosity of the gas, there is a velocity gradient between the coal flow on the belt and the traction airflow. Under the action of the coal flow, it will move relative to the coal flow, peel off the coal, and generate a certain amount of dust above the belt, which is advective dust. Falling dust is formed by the combined action of induced airflow and sheari...

Examples

Embodiment 1

[0030] The disclosed coal flow dust suppressant of present embodiment 1 comprises the raw material of following weight portion:

[0031] 2.0 parts of starch grafted acrylic acid polymer;

[0032] 0.03 parts of sodium lauryl sulfate;

[0033] 100 parts of water.

[0034] The preparation method of the dust suppressant of above-mentioned embodiment 1, comprises the steps:

[0035] Get 2.0 parts of starch-grafted acrylic acid polymer, 0.03 part of sodium lauryl sulfate and 100 parts of water in parts by weight, add starch-grafted acrylic acid polymer and sodium lauryl sulfate in a container equipped with a mechanical stirrer Stir well with water and completely dissolve to obtain the finished dust suppressant.

Embodiment 2

[0037] The disclosed coal flow dust suppressant of present embodiment 2 comprises the raw material of following weight portion:

[0038] 1.0 parts of starch grafted acrylic acid polymer;

[0039] 0.02 parts of sodium lauryl sulfate;

[0040] 100 parts of water.

[0041] The preparation method of the dust suppressant of above-mentioned embodiment 2, comprises the steps:

[0042] Get 1.0 parts of starch-grafted acrylic acid polymer, 0.02 part of sodium lauryl sulfate and 100 parts of water in parts by weight, and add starch-grafted acrylic acid polymer and sodium lauryl sulfate in a container equipped with a mechanical stirrer Stir well with water and completely dissolve to obtain the finished dust suppressant.

[0043] Further, the preparation method of starch grafted acrylic acid polymer is as follows:

[0044] S101: gelatinizing starch to obtain gelatinized starch;

[0045] S102: Mix and react the gelatinized starch, ammonium persulfate and acrylic acid solution to obtai...

Embodiment 3

[0048] The disclosed coal flow dust suppressant of present embodiment 3 comprises the raw material of following weight portion:

[0049] 3.0 parts of starch grafted acrylic acid polymer;

[0050] 0.05 parts of sodium lauryl sulfate;

[0051] 100 parts of water.

[0052] The preparation method of the dust suppressant of above-mentioned embodiment 3, comprises the steps:

[0053]Get 3.0 parts of starch-grafted acrylic acid polymer, 0.05 part of sodium lauryl sulfate and 100 parts of water in parts by weight, add starch-grafted acrylic acid polymer and sodium lauryl sulfate in a container equipped with a mechanical stirrer Stir well with water and completely dissolve to obtain the finished dust suppressant.

[0054] Further, the preparation method of starch-grafted acrylic acid polymer is specifically:

[0055] Add 4g of starch and distilled water into a 250mL flask equipped with a stirrer, condenser and thermometer, stir and gelatinize at a constant temperature at 80°C for 3...

technical field

[0001] The invention belongs to the technical field of coal flow dust control, and in particular relates to a coal flow dust suppressant and its preparation method and application. Background technique

[0002] Coal flow refers to the coal conveying system. During the transportation of coal on the belt, it is easy to generate dust, resulting in waste of resources and environmental pollution. Dust dynamic coal flow can be divided into advection dust and downflow dust. During the movement of the belt, the air on both sides of the belt will generate traction airflow with the movement of the belt. Due to the viscosity of the gas, there is a velocity gradient between the coal flow on the belt and the traction airflow. Under the action of the coal flow, it will move relative to the coal flow, peel off the coal, and generate a certain amount of dust above the belt, which is advective dust. Falling dust is formed by the combined action of induced airflow and sheari...

Examples

Embodiment 1

[0030] The disclosed coal flow dust suppressant of present embodiment 1 comprises the raw material of following weight portion:

[0031] 2.0 parts of starch grafted acrylic acid polymer;

[0032] 0.03 parts of sodium lauryl sulfate;

[0033] 100 parts of water.

[0034] The preparation method of the dust suppressant of above-mentioned embodiment 1, comprises the steps:

[0035] Get 2.0 parts of starch-grafted acrylic acid polymer, 0.03 part of sodium lauryl sulfate and 100 parts of water in parts by weight, add starch-grafted acrylic acid polymer and sodium lauryl sulfate in a container equipped with a mechanical stirrer Stir well with water and completely dissolve to obtain the finished dust suppressant.

Embodiment 2

[0037] The disclosed coal flow dust suppressant of present embodiment 2 comprises the raw material of following weight portion:

[0038] 1.0 parts of starch grafted acrylic acid polymer;

[0039] 0.02 parts of sodium lauryl sulfate;

[0040] 100 parts of water.

[0041] The preparation method of the dust suppressant of above-mentioned embodiment 2, comprises the steps:

[0042] Get 1.0 parts of starch-grafted acrylic acid polymer, 0.02 part of sodium lauryl sulfate and 100 parts of water in parts by weight, and add starch-grafted acrylic acid polymer and sodium lauryl sulfate in a container equipped with a mechanical stirrer Stir well with water and completely dissolve to obtain the finished dust suppressant.

[0043] Further, the preparation method of starch grafted acrylic acid polymer is as follows:

[0044] S101: gelatinizing starch to obtain gelatinized starch;

[0045] S102: Mix and react the gelatinized starch, ammonium persulfate and acrylic acid solution to obtai...

Embodiment 3

[0048] The disclosed coal flow dust suppressant of present embodiment 3 comprises the raw material of following weight portion:

[0049] 3.0 parts of starch grafted acrylic acid polymer;

[0050] 0.05 parts of sodium lauryl sulfate;

[0051] 100 parts of water.

[0052] The preparation method of the dust suppressant of above-mentioned embodiment 3, comprises the steps:

[0053]Get 3.0 parts of starch-grafted acrylic acid polymer, 0.05 part of sodium lauryl sulfate and 100 parts of water in parts by weight, add starch-grafted acrylic acid polymer and sodium lauryl sulfate in a container equipped with a mechanical stirrer Stir well with water and completely dissolve to obtain the finished dust suppressant.

[0054] Further, the preparation method of starch-grafted acrylic acid polymer is specifically:

[0055] Add 4g of starch and distilled water into a 250mL flask equipped with a stirrer, condenser and thermometer, stir and gelatinize at a constant temperature at 80°C for 3...