KR102064959B1 - A composition for preventing dust scattering - Google Patents

Abstract

In the case of using the dust preventing composition containing the hyaluronic acid and the carboxylic acid peroxide compound of the present invention, even hydrophobic dust is adsorbed to form a film, thereby providing excellent scattering dust reduction effect.

Description

Dust scattering prevention composition {A COMPOSITION FOR PREVENTING DUST SCATTERING}

The present invention relates to a scattering dust generation prevention composition comprising a hyaluronic acid and a carboxylic acid peroxide compound.

In the steelmaking process, graphite-based scattering dust is generated in the slag yard, and dust accumulates in the slag yard yard or the canopy of the yard of the yard, and this dust is scattered when the cooling slag is taken out and flies to the steel mill and nearby facilities to cause contamination. .

In order to solve such a problem, conventionally, the surface of the object was sprayed with water, but the method of spraying water causes a lot of manpower, time, and cost in the form of spraying the object every hour. In addition, there is a problem in that the water content of the beast increases and pollutants penetrate underground and contaminate soil and water quality. In particular, since the scattering dust of coal or graphite-based is hydrophobic, it does not mix well with water, so it is difficult to prevent dust from being blown by spraying water as described above.

In order to solve this problem, Republic of Korea Patent No. 10-0465228 provides a method for applying a surface hardener to the yard as a coating material composition for preventing the generation of scattering dust. However, the composition has a considerable difficulty in agitation, severe odor occurs, there is a problem that the film cracking or swept phenomenon of the object occurs when it rains. In addition, there is a problem in that the work efficiency is low, and since continuous spraying effect cannot be maintained, continuous spraying is required to cause soil and water pollution.

Accordingly, one aspect of the present invention is to provide a dust dust generation prevention composition comprising an aqueous hyaluronic acid solution and a carboxylic acid peroxide compound.

According to one aspect of the invention provides a scattering dust prevention composition comprising a hyaluronic acid, a carboxylic acid peroxide compound and water.

The hyaluronic acid may be 0.01 to 2% by weight in 100% by weight of the total scattering dust generation composition.

The carboxylic acid peroxide compound may be 0.02 to 5% by weight relative to 100% by weight of the total scattering dust prevention composition.

The carboxylic acid peroxide compound may include carboxylic acid and hydrogen peroxide.

The carboxylic acid peroxide compound may have a weight average molecular weight of 1000 to 1000000.

According to the present invention, when using the composition of the present invention containing hyaluronic acid and a carboxylic acid peroxide compound, it is possible to effectively adsorb hydrophobic dust as well as hydrophilic dust, and to prevent environmental pollution generated during the dust removal process.

Hereinafter, preferred embodiments of the present invention will be described with reference to various examples. However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below.

According to one aspect of the invention provides a composition for preventing dust scattering comprising a hyaluronic acid, a carboxylic acid peroxide compound and the balance of water.

The hyaluronic acid is a biosynthetic natural substance originally present in the skin of animals and the like. In addition, it is a hydrophilic material containing a lot of hydroxyl groups (-OH) as shown below may contain 6L of water per 1g. Therefore, it can contain a large amount of water and moisturizes the skin of animals.

As described above, hyaluronic acid contains a large amount of hydroxyl groups in the molecule itself and has a high viscosity, so that when used as a composition material of the scattering dust generation composition, the hyaluronic acid is adhered to the surface of the dust generating material to retain moisture to fix the dust to prevent dust blowing. It can prevent.

Hyaluronic acid contained in the scattering dust generation composition may be 0.01 to 2% by weight relative to 100% by weight of the total composition. More preferably, it may be 0.1 to 1% by weight. If the hyaluronic acid is less than 0.01% by weight, the moisturizing ability is weakened, so that the ability to adhere to the scattering dust is weakened may reduce the effectiveness of reducing scattering dust generation. In addition, when the content is more than 2% by weight, the composition may have an excessive viscosity and may be difficult to apply uniformly because of poor fluidity.

The carboxylic acid peroxide compound includes a carboxylic acid functional group and hydrogen peroxide, and may be 0.02 to 5 wt% based on 100 wt% of the total dust preventing composition.

When the carboxylic acid peroxide compound is used as a scattering dust generation prevention composition, a film may be formed by forming a compound in which a water-soluble aliphatic carboxylic acid and hydrogen peroxide are homogeneously mixed to coat a surface of a dust generating material. When the carboxylic acid peroxide compound is less than 0.02% by weight, the film-forming ability to form an anionic coating on the surface of the dust generating material may be weakened. When the amount of the carboxylic acid peroxide is greater than 5% by weight, the fluidity of the composition solution is poor due to the excessive viscosity. Handling can be difficult.

The carboxylic acid peroxide compound may include carboxylic acid and hydrogen peroxide as a composition material. The carboxylic acid and hydrogen peroxide may form a coating on the surface of the dust generating material, and may reduce a severe odor generation problem that may occur when reacted with a hydrophobic material. The content of carboxylic acid and hydrogen peroxide having such an effect is not particularly limited, but may be adjusted to an appropriate amount in consideration of the viscosity of the composition solution. For example, the carboxylic acid peroxide compound may comprise 23.1 weight percent carboxylic acid peroxide and 14.3 weight percent hydrogen peroxide.

Meanwhile, the weight average molecular weight of the carboxylic acid peroxide compound may be preferably 1000 to 1000000, more preferably 2000 to 500000. When the weight average molecular weight is less than 1000, the performance of forming a coating film may be reduced due to a weakening of the film forming ability. When the weight average molecular weight is more than 1000000, the carboxylic acid compound itself is difficult to prepare and the fluidity of the composition solution is poor. It may be difficult to form a uniform coating.

 Thus, when using a dust generating composition containing hyaluronic acid and a carboxylic acid peroxide compound is adsorbed and fixed to the scattering dust containing hydrophobic dust by the viscosity of the hyaluronic acid, and the adhesive to dust by the carboxylic acid peroxide compound By forming the film, it is possible to prevent the dust component from flying off.

Hereinafter, preferred embodiments of the present invention will be described with reference to various examples. However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below.

Example

1. Acquisition of scattering dust generation prevention composition containing hyaluronic acid and carboxylic acid peroxide compound

(1) Preparation of Hyaluronic Acid Aqueous Solution

The condenser and the stirrer were installed in a 2 L flask reactor, and 396 g of pure water was put into the flask reactor, and the temperature was raised to 40 ° C. After 4 g of hyaluronic acid was added to the flask reactor at a time, the internal temperature was maintained at 40 ° C.

An aqueous solution of 3 g of NaOH and 100 g of pure water was added dropwise to the flask reactor for 1 hour to completely dissolve, and then cooled to 25 ° C. to obtain 500 g of an aqueous solution of 1% by weight of hyaluronic acid. The viscosity of the obtained 1% by weight aqueous hyaluronic acid solution was confirmed to 1600cps at 25 ℃.

(2) Preparation of Carboxylic Acid Polymer Compound

A condenser and a stirrer were installed in a 2 L flask reactor, 400 g of pure water was added to the flask, and oxygen dissolved in pure water was removed using nitrogen gas, and the temperature was raised to 80 ° C.

For the polymerization reaction, an aqueous solution of 4 g of ammonium persulfate and 36 g of pure water was added to the flask reactor at a time, and the internal temperature was maintained at 80 ° C. A mixture of 400 g of acrylic acid, 0.5 g of mercaptoethanol, and 100 g of pure water was added dropwise to the flask reactor for 3.5 hours.

After the dropping was completed, the temperature of the flask reactor was raised to 90 ° C. and then completely reacted with unreacted acrylic acid while stirring for 1 hour, followed by cooling to 25 ° C. After the cooling reaction, 60 g of pure water was added to obtain 999 g of an aqueous polyacrylic acid solution.

The obtained polyacrylic acid aqueous solution had a pH of 2.8, 41.2% polyacrylic acid contained in 100% by weight of the total aqueous solution, a weight average molecular weight of 248,000, and a viscosity of 1600 cps at 25 ° C.

(3) Preparation of Peroxide Carboxylic Acid Compound

100 g of the polyacrylic acid aqueous solution obtained in the above (2) was added to the flask reactor, followed by stirring while maintaining 25 ° C. 1.0 g of 1-hydroxyethylidene-1,1-diphosphonic acid 50% aqueous solution was added to stably obtain the carboxylic acid peroxide functional group while maintaining the stirring. Thereafter, 110 g of 35% aqueous hydrogen peroxide solution was added dropwise for 1 hour to oxidize the carboxylic acid functional group of polyacrylic acid.

After stopping the stirrer, the carboxylic acid peroxide compound was stabilized at 25 ° C. for 24 hours to obtain 211 g of an aqueous polyacrylic acid peroxide solution.

The obtained polyacrylic acid aqueous solution was found to be pH 3.2, polyacrylic peroxide was 23.1%, and hydrogen peroxide was 14.3%.

Example 1

  The scattering dust of the steel mill was collected and the performance was evaluated using the composition solution of the present invention. 1m wide, 3m long and 1m high barrels were made of acrylic and 100g of scattered dust collected at the bottom of the barrel was spread evenly over an area of 0.5m X 0.5m.

50 ml of the composition solution mixed with 0.01% by weight of hyaluronic acid, 0.1% by weight of carboxylic acid peroxide and water in the acrylic barrel was evenly sprayed and dried for 30 minutes. After drying the composition solution, the blowing dust was collected by blowing for 3 minutes at a wind speed of 3m per second.

Example 2

It carried out similarly to Example 1 except having used 50 ml of compositions which mixed 0.1 weight% of hyaluronic acid, 2 weight% of carboxylic acid peroxide compounds, and water.

Comparative example

The same conditions as in Example 1 were carried out except that water containing no composition was sprayed.

2. Confirmation of scattering dust reduction effect

As a result of collecting the scattering dust of Example 1 and measuring the weight, it was confirmed that 93.5% is not scattered to 6.5g, 99.9% was not scattered to 0.1g as a result of collecting the dust of Example 2 Did not show results.

On the other hand, the dust of the comparative example was collected and weighed. As a result, 19.5% of 80.5g was not scattered.

That is, as a composition according to the present invention, when the scattering dust generation reducing composition including hyaluronic acid and a carboxylic acid peroxide compound is applied to a dust generating material, the adsorption capacity of hyaluronic acid to the dust generating material and the scattering dust generating material of the carboxylic acid peroxide compound are By forming the surface coating, the adhesion ability was improved, and generation of scattering dust could be effectively reduced.

Claims (5)

A hyaluronic acid, a peroxide carboxylic acid compound and water, wherein the hyaluronic acid is 0.1 to 1% by weight in 100% by weight of the total scattering dust generation prevention composition, dust scattering prevention composition. delete The method of claim 1,
The carboxylic acid peroxide compound is 0.02 to 5% by weight based on 100% by weight of the total dust prevention composition, dust scattering prevention composition. The method of claim 1,
The carboxylic acid peroxide compound includes carboxylic acid and hydrogen peroxide, scattering dust prevention composition. The method of claim 1,
The carboxylic acid peroxide compound has a weight average molecular weight of 1000 to 1000000, scattering dust prevention composition.