Coal pile surface waterproof covering agent and preparation method thereof

Abstract

The invention discloses a coal pile surface waterproof covering agent and a preparation method thereof. The coal pile surface waterproof covering agent is mainly prepared from the following raw materials in percentage by weight: 0.1-5% of soy isolate protein, 0.05-0.3% of sodium carboxymethylcellulose, 0.05-0.3% of a surfactant, 0.01-3% of methyl sodium silicate and the balance of water. The preparation method comprises the following steps: mixing the soy isolate protein, sodium carboxymethylcellulose, surfactant and water for reaction; and adding the methyl sodium silicate and mixing uniformly to obtain the coal pile surface waterproof covering agent. The coal pile surface waterproof covering agent disclosed by the invention has good dustproof, windproof and rainproof properties and relatively high bonding strength and resists sun exposure and thus is suitable for an outdoor coal pile and can effectively meet the dust suppression requirement on the outdoor coal pile in a power plant; the preparation method is simple to operate and has relatively low requirements on the reaction equipment; and moreover, the temperature required in the reaction process is not high, the heating time is not long, the energy consumption is low, and thus the preparation method is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of coal, in particular to a water-repellent covering agent on the surface of coal piles and a preparation method thereof. Background technique [0002] Coal is a non-renewable energy source. With the rapid development of industry, the consumption of coal is also increasing. According to the current consumption rate, the coal reserves in the world can only be enough for human use for 30-45 years. However, my country's power energy structure is still dominated by coal-fired units, and the shortage of coal will restrict the development of electric power. According to statistics, in 2010, my country's coal-burning gap was 500 million tons, and by 2020 it will be 1.3 billion tons. Heavy and far away. The mining and consumption of coal-burning has aggravated the pollution of air and soil, endangering the living conditions of human beings, and environmental governance also requires a lot of funds. Saving fuel resources and ...

AI Technical Summary

Problems solved by technology

The second is the loss caused by the erosion of rainwater. The loss caused by the erosion and infiltration of rainwater causes some coal particles to flow into the ditch with the runoff collected by the rainwater. The amount of loss is related to factors such as the length of the rainy season and the amount of rainfall; Rainwater also causes the low-level calorific value of coal to decrease. For every 1% increase in moisture content, the low-level calorific value decreases by 200-300MJ / kg, which is equivalent to an increase of coal consumption by more than 1%. There is a lot of rain in the south. For open-pit coal yards, the annual average moisture content Will increase by more than 2%, which is equivalent to increasing coal consumption by more than 2%

[0007] Although the above-mentioned coal dust suppressant has a good dust suppression effect, it is generally suitable for the coal transportation process, and because the components are mostly starch and cellulose substances, there are problems of low bonding strength and poor water resistance , and it is also not suitable for dust suppression of open coal piles

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