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Environment-friendly curing agent and preparation method thereof

A curing agent, an environmentally friendly technology, applied in the field of environmental protection, can solve the problems of secondary pollution of chemical substances, easy to be washed away by rainwater, etc., and achieve the effects of low cost, obvious dust suppression effect, and reduced work intensity.

Inactive Publication Date: 2012-07-11
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these curing agents have good dust suppression effects, some chemical substances will cause secondary pollution to the environment and are easily washed away by rainwater. Many surfactants and other substances in their components are difficult to decompose and remove in a natural state.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Add 5 g of crushed straw into the reactor, mix it with 100 g of water, heat and stir, stop heating after the temperature rises to the point where the solution in the reactor boils, let it stand for cooling, and after cooling to normal temperature, add 3 g of starch, 0.3 After stirring the 2 g calcium oxide, heat it to boiling again, add 0.8 g glycerin and 25 mg potassium triphosphate after cooling to get the finished product. Spray the solidifying agent made by the method shown in this example on a coal pile with a surface area of ​​10 square meters. After observation, the surface is dry in 4 hours, and it is hard to dry in 8 hours. The surface of the coal pile has formed a layer of covering film, which is squeezed and trampled No obvious cracks. Blow the surface of the coal pile with a fan at a wind speed of 20 m / s for 30 minutes. When the wind blows, no dust is raised, and there is no phenomenon of coal powder falling down. The coal pile has been stacked in...

Embodiment 2

[0030] Example 2: Add 2 g of pulverized straw into the reactor, mix it with 100 g of water, heat and stir, stop heating after the temperature rises to the point where the solution in the reactor boils, let it stand for cooling, and after cooling to normal temperature, add 1 g of starch, 0.1 After stirring the calcium oxide in 1 g, heat it to boiling again, add 0.4 g of glycerin and 500 mg of potassium triphosphate after cooling to get the finished product. Spray the curing agent prepared by the method shown in this example on a coal pile with a surface area of ​​10 square meters. After observation, it will dry on the surface in 3.5 hours and dry in 7 hours. The surface of the coal pile has formed a layer of covering film, which is squeezed and trampled No obvious cracks. Blow the surface of the coal pile with a fan at a wind speed of 20 m / s for 20 minutes. No dust is raised when the wind blows, and there is no phenomenon of coal powder falling down. The coal pile has been stac...

Embodiment 3

[0031] Example 3: Add 3 g of crushed stalks to the reactor, mix with 100 g of water, heat and stir, stop heating after the temperature rises to the point where the solution in the reactor boils, let it stand for cooling, and after cooling to normal temperature, add 2 g of starch, 0.3 After stirring the 2 g calcium oxide, heat it to boiling again, add 0.6 g glycerin and 250 mg potassium triphosphate after cooling to get the finished product. Spray the solidifying agent prepared by the method shown in this example on a coal pile with a surface area of ​​10 square meters. After observation, it will dry on the surface in 4 hours and dry in 8 hours. The surface of the coal pile has formed a layer of covering film, which is squeezed and stepped on. No obvious cracks. Blow the surface of the coal pile with a fan at a wind speed of 25 m / s for 30 minutes. When the wind blows, no dust is raised, and there is no phenomenon of coal powder falling down. The coal pile has been stacked in th...

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Abstract

The invention relates to an environment-friendly curing agent, and belongs to the field of environment friendliness. The curing agent comprises the following raw materials in part by weight: 100 parts of water, 2 to 5 parts of straw, 1 to 3 parts of starch, 0.1 to 0.3 part of calcium oxide and 0.4 to 0.8 part of glycerol. A preparation method comprises the following steps of: stirring 2 to 5 parts of straw and 100 parts of water in a reactor uniformly, heating until the water is boiled, stopping heating and cooling; preparing 1 to 3 parts of starch and 0.1 to 0.3 part of calcium oxide to form a solution, adding the solution into the cooled reactor; continuing to heat the reactor to be boiled, stopping heating, cooling and adding 0.4 to 0.8 part of glycerol and 0.025 to 0.5 part of potassium triphosphate. The invention provides the environment-friendly curing agent which has a good dust suppression effect, is non-toxic, harmless, safe and energy-saving, and does not have corrosiveness and pollution to environment.

Description

technical field [0001] The invention belongs to the field of environmental protection. Background technique [0002] Dust mainly comes from the process of material transportation, long-term storage, road cleaning and dust disposal. Especially coal dust pollution. my country's energy composition is dominated by coal, and the primary energy consumption will still be dominated by coal for a long time in the future. Such a large consumption makes the dust problem one of the important problems that plague the coal system. Coupled with the current domestic environmental protection department's policies to control SOx, NOx and particulate matter emissions and the structural changes in the coal industry, power plants are forced to switch to low-sulfur coal and coal of poor quality. The characteristics of these coal types are: higher soil content Therefore, it is easy to generate dust during the transfer, unloading, transmission, crushing and storage of coal. [0003] The hazards ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22
Inventor 竹涛李海蓉陈越李文秀万艳东陈莎
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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