Compound foaming agent used for depositing dust and preparation method thereof

Abstract

The invention discloses a compound foaming agent used for depositing dust and a preparation method thereof. The compound foaming agent is prepared from following materials by weight: 5-8 parts of an alkyl polyglucoside, 20-25 parts of a fatty alcohol-polyoxyethylene ether, 9-14 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 1-2 parts of 2-ethyl hexyl succinate sodium sulfonate and 51-65 parts of water. The compound foaming agent has advantages of good acid and alkali resistance and hard-water resistance, strong foaming capability, fine and rich foams, small bubble sizes, moderate stability, large dust contacting area, good adhesiveness and wettability, enhanced dust depositing effects, enhanced capturing capability for respirable dust in particular, no toxicity, no harm, no skin irritation, rapid and complete biodegradation, selection of raw materials common in market and low cost. The compound foaming agent has wide applicability in the field of dust deposition using foams.

Description

technical field [0001] The invention relates to a foaming agent and a preparation method thereof, in particular to a composite foaming agent for dust reduction and a preparation method thereof. Background technique [0002] Foam dust suppression technology is to dissolve the foaming agent in water according to the specified ratio, and spray it to the dust source after foaming device generates foam. Due to the large specific surface area of ​​the foam, it can wrap and cover the dust source and increase the contact probability between the foam and the dust; the wettability is good, and it can quickly wet and settle the dust particles in contact with it, so the dust removal efficiency is very high. At the same time, most of the volume in the foam is occupied by gas, so the water consumption of this technology is very small. [0003] Practice at home and abroad has proved that foam dust suppression is one of the most effective ways to improve the dust control effect in coal min...

AI Technical Summary

Problems solved by technology

There is following shortcoming in above-mentioned prior art: 1, acid and alkali resistance and hard water resistance are weak

The water quality of mine water in different mining areas in my country varies greatly. For example, the water quality in the main coal production areas in North China and Northwest China is generally hard. However, there are more ions in the existing foaming agent surfactants, and they are used in water with high pH and hardness. Insufficient activity leads to low foaming rate, which affects dust suppression efficiency and is not conducive to the large-scale promotion of foam dust suppression technology

[0005] 2. The foam stabilization time (half-life) is too long

Dust reduction in wells is carried out in the limited space and production environment of coal mines. In fact, only the newly sprayed foam can play a good role in dust reduction. If the foam life is too long, not only the long-term unbroken foam will hinder the newly sprayed foam In addition, it will cause a large amount of foam to accumulate in the dust-proof places such as the head of the tunnel or the coal mining face, which will affect the working environment and production efficiency

[0006] 3. The average particle size of the bubbles in the foam is too large

The larger the average particle size of the bubbles in the foam, the smaller the specific surface area, and the lower the probability of contact between the dust and the foam, which will inevitably affect the dust reduction efficiency of the foam, and the large particle size bubbles are easy to be blown away by the wind when spraying, and cannot be effectively activated. to dust effect

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