CN113150744A

CN113150744A - Quick-crusting biodegradable dust suppressant

Info

Publication number: CN113150744A
Application number: CN202110097102.XA
Authority: CN
Inventors: 彭岩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-07-23

Abstract

The invention discloses a quick-crusting biodegradable dust suppressant, which relates to the field of dust suppressants and consists of the following components in percentage by weight: 10-90% of EVA emulsion; 2% -4% of vegetable gum; 0.002% -0.005% of lubricant; 0.0005 to 0.001 percent of dispersing agent; color paste 0.0005% -0.001%; 0.0005 to 0.001 percent of essence; 10 to 14 percent of film aid agent; 6 to 8 percent of bactericide; 2 to 6 percent of defoaming agent; 0.5 to 2 percent of soluble starch; 0.04 to 0.2 percent of pH value regulator; the invention is convenient to spray without stirring with the balance of water; the crusting is fast, and the wind resistance level is strong; the dust suppression agent has good film forming and water retaining properties, can slow down the evaporation of dust and water in soil, and has longer dust suppression time; the dust suppressant has the advantages of outstanding cold resistance and acid and alkali resistance, no limitation of environmental conditions in use, wide source of raw materials, low cost and effective reduction of dust suppression cost investment of industrial and mining enterprises.

Description

Quick-crusting biodegradable dust suppressant

Technical Field

The invention relates to the field of dust suppression and environmental protection, in particular to a quick-crusting biodegradable dust suppressant.

Background

China is a large industrial production country, dust problems become more serious with the continuous development and growth of economic scale, haze weather is frequent, and dust which escapes in the atmosphere often contains a plurality of toxic components such as chromium, manganese, cadmium, lead, mercury, arsenic and the like. When the human body inhales dust, the particles smaller than 5 mu m are easy to penetrate into the lung to induce lung diseases, and cause a great deal of harm to life and work of people. The problem of dust control is a problem to be solved urgently in environmental control in China.

The traditional method of suppressing is mostly to suppress dust by sprinkling water or covering. The sprinkling dust suppression effect is good, but the water evaporation speed is high, a large amount of water resource waste is caused by continuous sprinkling operation, and the sprinkling is not enough aiming at the evaporation speed and the absorption speed of residue soil of a large-scale slag yard, a dust yard or a coal yard. The dust suppression is generally realized by adopting a dust screen, so that the dust suppression is feasible in a short-time emergency, the secondary pollution to the environment is more serious after the dust suppression is aged and broken in a long term, and the cost is higher.

The traditional chemical dust suppressant is partially solid powder, needs to be stirred and diluted on site, is inconvenient to use and spray, has poor water retention capacity, is generally not anti-freezing, cannot be used under the condition of strong acidity and alkalinity, is slow to crust and has short effective dust suppression period.

Disclosure of Invention

The invention aims to develop a biodegradable dust suppressant capable of crusting quickly, which is formed by combining novel multifunctional high polymer, wherein cross-linking molecules in the polymer form a net structure, various ion groups are arranged among the molecules, and the polymer and the ions generate stronger affinity due to high charge density, can quickly capture and firmly adsorb particle dust through coagulation, bonding and other actions, can be solidified into a film on the surface of the dust after being dried, has good film-forming water retention property, can slow down the evaporation of dust and water in soil, and has longer dust suppression time; the temperature resistance, cold resistance and acid and alkali resistance are outstanding, and the use is not limited by environmental conditions.

In order to achieve the purpose, the invention provides the following technical scheme: a quick-crusting biodegradable dust suppressant comprises the following components in percentage by weight: 10-90% of EVA emulsion; 2% -4% of vegetable gum; 0.002% -0.005% of lubricant; 0.0005 to 0.001 percent of dispersing agent; color paste 0.0005% -0.001%; 0.0005 to 0.001 percent of essence; 10 to 14 percent of film aid agent; 6 to 8 percent of bactericide; 2 to 6 percent of defoaming agent; 0.5 to 2 percent of soluble starch; 0.04 to 0.2 percent of pH value regulator; the balance being water.

Preferably, the dispersing agent is one of polyoxyethylene octyl phenol ether-10, sodium polycarboxylate and polyphosphate.

Preferably, the lubricant is one of glycerin, propylene glycol, and polyoxyethylene alkylphenol ether.

Preferably, the filming aid agent is dodecyl alcohol ester.

Preferably, the vegetable gum is one of xanthan gum, guar gum and seaweed gum.

Preferably, the pH regulator is anhydrous citric acid.

Preferably, the bactericide is ー of 2-methyl-4-isothiazolin-3-one (MIT), 1, 2-benzisothiazolin-3-one (BIT) and 5-chloro-2-methyl-4-isothiazolin-3-one (CIT).

Compared with the prior art, the invention has the beneficial effects that: the dust suppressant adopts the dodecanol ester as the filming aid, has higher boiling point, better miscibility and strong environmental protection performance, can reduce the film forming temperature, is beneficial to forming excellent and continuous films, volatilizes the filming aid after film forming, does not influence the characteristic of a cured film, ensures that color molecules in color paste are attached between porous soluble starch by taking the soluble starch as a carrier through adding the color paste and the soluble starch into the dust suppressant to ensure that the film forming layer is continuously colored, adopts anhydrous citric acid as a pH regulator to ensure that the pH value of the dust suppressant is neutral, is environment-friendly, does not cause negative effect on the environment, has mild property, and is added with the bactericide in the dust suppressant, thereby effectively killing harmful bacteria in the air around dust, causing no harm to human bodies and plants, belonging to green and environment-friendly products The spraying is convenient, and each raw materials source is convenient, low cost, has easy degradability, can not cause secondary pollution, and is healthy and environment-friendly, and the film forming property is good, can block and slow down the evaporation of moisture in the dust, has good evaporation resistance, and it is long to press down the dirt time, can show the surface tension who reduces the dust moreover, wets the dust fast and makes it congeal and subside rapidly, and it is showing to press down the dirt effect, has the best effect to the extremely fine granule dust within PM 10.

Detailed Description

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

The first embodiment is as follows: a quick-crusting biodegradable dust suppressant comprises the following components in percentage by weight: 90% of EVA emulsion; 4% of vegetable gum; 0.005% of lubricant; 0.001% of dispersing agent; 0.001 percent of color paste; 0.001% of essence; 14% of film aid agent; 8% of bactericide; 6% of defoaming agent; 2% of soluble starch; 0.2 percent of pH value regulator; the balance being water.

In the invention, the diffusant is polyoxyethylene octyl phenol ether-10.

In the present invention, the lubricant is glycerin.

In the invention, the film aid agent is dodecyl alcohol ester.

In the invention, the vegetable gum is xanthan gum.

In the invention, the pH value regulator is anhydrous citric acid.

In the invention, the bactericide is 2-methyl-4-isothiazolin-3-one (MIT).

Example two: a quick-crusting biodegradable dust suppressant comprises the following components in percentage by weight: 45% of EVA emulsion; 3% of vegetable gum; 0.0035% of a lubricant; 0.00075% of dispersing agent; color paste 0.0075%; 0.0075% of essence; 12% of film aid agent; 7% of a bactericide; 4% of defoaming agent; 1.25% of soluble starch; 0.12 percent of pH value regulator; the balance being water.

In the invention, the diffusant is a sodium polycarboxylate.

In the present invention, the lubricant is propylene glycol.

In the invention, the film aid agent is dodecyl alcohol ester.

In the invention, the vegetable gum is guar gum.

In the invention, the pH value regulator is anhydrous citric acid.

In the invention, the bactericide is 1, 2-benzisothiazolin-3-one (BIT).

Example three: a quick-crusting biodegradable dust suppressant comprises the following components in percentage by weight: 10% of EVA emulsion; 2% of vegetable gum; 0.002% of lubricant; 0.0005% of dispersing agent; color paste 0.0005%; 0.0005% of essence; 10% of film aid agent; 6% of a bactericide; 2% of defoaming agent; 0.5 percent of soluble starch; 0.04 percent of pH value regulator; the balance being water.

In the invention, the diffusant is polymerized phosphate.

In the present invention, the lubricant is polyoxyethylene alkylphenol ether.

In the invention, the film aid agent is dodecyl alcohol ester.

In the invention, the vegetable gum is one of seaweed gums.

In the invention, the pH value regulator is anhydrous citric acid.

In the invention, the bactericide is 5-chloro-2-methyl-4-isothiazolin-3-one (CIT).

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

The product of the invention can be applied to dust suppression in various occasions such as a fly ash storage yard, a coal storage yard, a slag storage yard, construction waste and the like. The product of the invention, a commercial sodium alginate dust suppression product and a high molecular polymer dust suppressant are subjected to comparative experiments on a plurality of performance indexes such as a crust breaking rate, a water retention capacity, an anti-freezing capacity, an acid and alkali resistance and the like on the same fly ash storage yard.

1. Fast crust forming speed and strong wind erosion resistance

TABLE 1 Experimental data for rate of crust formation and resistance to wind erosion

The product of the invention is sprayed on the surfaces of materials such as fly ash and the like, can quickly bond and adsorb dust particles on the surface layer, forms a grid structure through crosslinking and coagulation, and finally forms a film and solidifies to form a crust layer with wind erosion resistance. The incrustation is formed at a high speed and has stronger durable wind erosion resistance.

2. Soil water evaporation retarding and water retention performance contrast test

Table 2 soil moisture retention test data

The fly ash is taken as an experimental object, different dust suppressants are sprayed, a soil humidity detector is inserted into the dust suppressants, the insertion depth is 20cm, the rain is avoided, and the water retention performance test is carried out under the same illumination evaporation condition. The valve product forms a film and crusts, can effectively keep the humidity of soil below a crusting layer, has an outstanding water retention effect, and has stronger long-acting dust suppression capability.

3. Can crunch under low temperature condition, and the freezing resistance contrast test

TABLE 3 soil crusting Performance test data at different temperatures

The fly ash and the loess are taken as the experimental objects, different dust depressants are sprayed at different natural temperatures, and after the same time, the crusting condition is observed to carry out the low-temperature anti-freezing performance test. The valve product forms a film and crusts, and can effectively keep the long-acting dust suppression capability of the crusting layer to be stronger.

Claims

1. A quick-crusting biodegradable dust suppressant comprises the following components in percentage by weight: 10-90% of EVA emulsion; 2% -4% of vegetable gum; 0.002% -0.005% of lubricant; 0.0005 to 0.001 percent of dispersing agent; color paste 0.0005% -0.001%; 0.0005 to 0.001 percent of essence; 10 to 14 percent of film aid agent; 6 to 8 percent of bactericide; 2 to 6 percent of defoaming agent; 0.5 to 2 percent of soluble starch; 0.04 to 0.2 percent of pH value regulator; the balance being water.

2. A rapidly encrusting biodegradable dust suppressant according to claim 1, wherein: the dispersing agent is one of polyoxyethylene octyl phenol ether-10, sodium polycarboxylate and polyphosphate.

3. A rapidly encrusting biodegradable dust suppressant according to claim 1, wherein: the lubricant is one of glycerin, propylene glycol and polyoxyethylene alkylphenol ether.

4. A rapidly encrusting biodegradable dust suppressant according to claim 1, wherein: the filming aid adopts dodecyl alcohol ester.

5. A rapidly encrusting biodegradable dust suppressant according to claim 1, wherein: the vegetable gum is one of xanthan gum, guar gum and seaweed gum.

6. A rapidly encrusting biodegradable dust suppressant according to claim 1, wherein: the pH value regulator is anhydrous citric acid.

7. A rapidly encrusting biodegradable dust suppressant according to claim 1, wherein: the bactericide is ー of 2-methyl-4-isothiazoline-3-ketone (MIT), 1, 2-benzisothiazolin-3-ketone (BIT) and 5-chloro-2-methyl-4-isothiazoline-3-ketone (CIT).