KR102368436B1 - A composition for prevention of scattering a dust and a method for preparing the composition - Google Patents

Abstract

The present invention relates to a composition for preventing scattering of dust and a method for preparing the same.

Description

A composition for preventing scattering dust and a method for preparing the same {A composition for prevention of scattering a dust and a method for preparing the composition}

The present invention relates to a composition for preventing scattering of dust and a method for preparing the same.

Specifically, the present invention relates to a technology for preventing things containing fine dust, such as coal and ash, from being blown in the wind by transportation or storage, and preventing spontaneous ignition when coal is heavily loaded. In addition, it relates to an eco-friendly material for preventing the blowing of fine dust such as automobile tires on the road.

Fugitive dust such as coal powder is harmful to the human body, and it can occur on general roads and in various industrial sites.

In particular, fine dust of 10㎛ or less is known to easily enter the body through the respiratory tract and deposit into the bronchial tubes or lungs, thereby lowering the function of the lungs and lowering the immune function of the human body.

In addition, fine dust such as coal powder or ash has a high spontaneous ignition rate, so the risk of fire due to this in dry winter is also a big problem.

As a method for suppressing scattering dust in the related art, there is a method of spraying an aqueous solution of an inorganic compound such as magnesium chloride, calcium chloride, or calcium carbonate. However, inorganic compounds have a weak cohesive power of scattering dust, a low effect of suppressing scattering dust compared to the amount used, and have limitations in acidifying the soil.

In addition, there are chemical products such as PEA and acrylic as fine dust reducing agents, which suppress scattering and dispersion of fine particles by spraying and applying viscous substances such as PEA or acrylic to powder such as coal and roads, etc. negatively affect

As above, fine dust particles are small and can be easily blown away by the wind, making transportation and storage difficult, and these difficulties cause various problems that harm the health of the public. didn't

Accordingly, an object of the present invention is to provide a composition and method for solving scattering of fine dust such as coal and ash without negatively affecting the surrounding environment.

One aspect of the present invention, rice, glutinous rice or a combination of rice and glutinous rice; and

It relates to a composition for suppressing scattering dust, comprising an aqueous solvent.

Another aspect of the present invention is a method for producing a composition for suppressing scattering dust,

The method is

adding rice, glutinous rice or a combination of rice and glutinous rice to an aqueous solvent and heating to a temperature of 60° C. to 120° C. to provide liquid rice, glutinous rice or a combination of rice and glutinous rice;

The composition is rice, glutinous rice or a combination of rice and glutinous rice; and an aqueous solvent;

It relates to a method for producing a composition for suppressing scattering dust.

Another aspect of the present invention, rice, glutinous rice or a combination of rice and glutinous rice; and applying a composition comprising an aqueous solvent to the subject for suppressing ignition.

Another aspect of the present invention, rice, glutinous rice or a combination of rice and glutinous rice; And it relates to a method for suppressing flying dust, comprising applying a composition comprising an aqueous solvent to a sample for suppressing flying dust.

The composition or method according to the present invention not only effectively prevents scattering by adsorbing and agglomerating dust such as coal, but also maintains the particle size in a coarsened form even after moisture is removed, thereby having an excellent effect of preventing scattering.

In addition, the composition or method according to the present invention can minimize the influence on the surrounding environment by using eco-friendly rice or glutinous rice, is harmless to the human body and has excellent water resistance.

In addition, the composition and method according to the present invention have the effect of effectively preventing spontaneous combustion of coal as well as effectively suppressing scattered dust.

One aspect of the present invention, rice, glutinous rice or a combination of rice and glutinous rice; and

It relates to a composition for suppressing scattering dust, comprising an aqueous solvent.

Rice, glutinous rice, or a combination of rice and glutinous rice has the same viscosity as amylopectin, and can effectively adsorb and aggregate dust such as coal powder to make its size coarse. This prevents scattering and furthermore, forms a film on the surface of the dust to block contact with air, thereby suppressing spontaneous ignition of volatile substances.

Rice, glutinous rice or a combination of rice and glutinous rice may be used, for example, in powder or granular form.

More specifically, rice, glutinous rice, or a combination of rice and glutinous rice is added to an aqueous solvent in the form of a powder to a temperature of 60° C. to 120° C., specifically a temperature of 70° C. to 115° C., more specifically 75° C. to 110° C. After being heated at a temperature of , it can be used as a composition for suppressing scattering dust. At the above temperature, for example, it may be heated for about 2 minutes to about 30 minutes, specifically, about 3 minutes to about 20 minutes. When heated in the above range, rice or glutinous rice is gelatinized to increase the viscosity and can become a translucent colloidal material.

In one example, it can be used as a composition for suppressing scattering dust in this state, or by adding a separate aqueous solvent thereto and used as a composition for suppressing scattering dust. The weight of the aqueous solvent to be added may range from 0.2 to 3 times the weight of the primary aqueous solvent, more specifically from 0.5 to 2.5 times the weight of the primary aqueous solvent.

Rice, glutinous rice or a combination of rice and glutinous rice may be included in an amount of 1% to 20% by weight based on the total weight of the composition for suppressing scattering dust. More specifically, it may be included in the range of 5 wt% to 15 wt%, and if it is in the range, it may have a scattering dust removal efficiency and a viscosity suitable for spraying.

As used herein, the term 'rice' may refer to any type of rice other than glutinous rice, and in a specific embodiment, may refer to non-glutinous rice.

Glutinous rice is superior to rice in terms of scattering dust removal effect, and furthermore, glutinous rice or rice is superior in scattering dust suppression effect than general starch. This is probably not bound by a particular theory, but it seems to be due to the difference in the composition of starch. The starch in rice has a structure in which amylose and amylopectin chains are regularly dense, and water molecules break through these chains to destroy the dense structure. This results in an irregular and loose structure, but glutinous rice is mostly composed of only amylopectin, so this structure becomes a much more tangled structure, which is thought to be more effective in suppressing scattering dust. As a result of a comparative experiment of glutinous rice and starch in the same manner as in Example 1 and Experimental Example 1 described below, the experimental result showed that glutinous rice was improved by about 45% compared to starch.

As used herein, the term 'flying dust' may mean dust derived from coal, ash, limestone, aggregate, anthracite, silt, or iron ore, or dust on roads.

Water can be used as an example of the aqueous solvent.

The composition, in one embodiment, glycerin, polyhydric alcohol other than glycerin, or a combination thereof; silicates; hydroxide salts; And it may further include one or more additives selected from the group consisting of boron compounds.

The additive may serve to further increase the ability to remove scattered dust or to further enhance the ability to prevent spontaneous ignition. In terms of scattering dust removal ability, glycerin, polyhydric alcohol other than glycerin, or a combination thereof; silicates; hydroxide salts; And it is advantageous to add a boron compound, and it is preferable to add silicates or hydroxides in terms of preventing spontaneous ignition.

Examples of the hydroxide salts include at least one selected from the group consisting of sodium hydroxide, potassium hydroxide, aluminum hydroxide, and magnesium hydroxide.

Examples of the silicates include at least one selected from the group consisting of sodium silicate, potassium silicate, aluminum silicate, and magnesium silicate.

Examples of the polyhydric alcohol other than glycerin may include at least one selected from the group consisting of ethylene glycol, propylene glycol, 1,3-butylene glycol, and polyethylene glycol.

The boron compound may include boron dioxide, diboron trioxide, tetraboron pentoxide, boric acid or borax.

The one or more additives are included in an amount of 0.01 wt% to 20 wt%, specifically 0.05 wt% to 15 wt%, more specifically 0.5 wt% to 10 wt%, based on the total weight of the composition for suppressing scattering dust can

In one example, the weight ratio of the aqueous solvent: glutinous rice or rice: glycerin may be 100 to 300: 1 to 30: 20 to 100.

In one example, the weight ratio of the aqueous solvent: glutinous rice or rice: silicates: hydroxides may be 100 to 300: 1 to 30: 1 to 30: 0.1 to 10.

In one example, the weight ratio of the aqueous solvent: glutinous rice or rice: glycerin: silicates: hydroxides may be 100 to 300: 1 to 30: 2 to 100: 1 to 30: 0.1 to 10.

The composition may be applied to a sample in the form of a spray or application or in the air.

The composition may further inhibit spontaneous ignition when applied to a specimen with a potential for spontaneous ignition (eg, coal). In order to suppress spontaneous ignition, the composition may further include silicates or hydroxides.

The amount of the composition may be applied in an amount of from about 1% to about 100% by weight, specifically from about 3% to about 90% by weight, more specifically from about 5% to about 80% by weight, based on the weight of the sample requiring treatment. .

Another aspect of the present invention relates to a method for producing a composition for suppressing scattering dust.

The method is

adding rice, glutinous rice or a combination of rice and glutinous rice to an aqueous solvent and heating to a temperature of 60° C. to 120° C. to provide liquid rice, glutinous rice or a combination of rice and glutinous rice;

The composition may include rice, glutinous rice or a combination of rice and glutinous rice; and aqueous solvents.

The method may further include adding a separate aqueous solvent after providing the liquid rice, glutinous rice, or a combination of rice and glutinous rice.

The description of the composition for suppressing scattering dust in the above aspect is the same as the above aspect, so it can be referred to.

Another aspect of the present invention, rice, glutinous rice or a combination of rice and glutinous rice; and applying a composition comprising an aqueous solvent to the subject for suppressing ignition.

Another aspect of the present invention, rice, glutinous rice or a combination of rice and glutinous rice; And it relates to a method for suppressing flying dust, comprising applying a composition comprising an aqueous solvent to a sample for suppressing flying dust.

Hereinafter, the present invention will be described in more detail through examples. However, these examples are for illustrative purposes only, and the scope of the present invention is not limited to these examples.

Example

Example 1

Pour 10 g of powdered glutinous rice into 100 g of water and heat at 80~110°C for about 10 minutes to make a highly viscous liquid. Thereafter, 100 g of water was further mixed to prepare a composition 1 for suppressing scattering dust of Example 1.

Example 2

In Example 1, 50 g of glutinous rice was used, and a composition 2 for suppressing scattering dust of Example 2 was prepared in the same manner as in Example 1, except that it was poured into 150 g of water.

Example 3

In Example 1, 50 g of glutinous rice was used, poured into 100 g of water, and then 400 g of water was further mixed to prepare a composition 3 for suppressing scattering dust of Example 3 in the same manner as in Example 1 except that .

Example 4

In Example 1, a composition 4 for suppressing scattering dust of Example 4 was prepared in the same manner as in Example 1, except that the heating temperature was 70 to 90° C. and the heating time was about 12 minutes.

Example 5

10 g of glutinous rice powder is poured into 100 g of water, heated at 80 to 90° C. for about 10 minutes to make a highly viscous liquid, and then 50 g of glycerin and 100 g of water are further mixed to prepare composition 5 for suppressing scattering dust of Example 5 did

Example 6

Pour 10 g of powdered glutinous rice into 100 g of water, heat at 80-90° C. for about 12 minutes to make a highly viscous liquid, and then add 10 g of sodium silicate, 3 g of sodium hydroxide, and 50 g of water to suppress the scattering dust of Example 6. For composition 6 was prepared.

Example 7

10 g of glutinous rice powder is poured into 100 g of water and heated at 80 to 90 ° C for about 10 minutes to make a highly viscous liquid. A composition 7 for suppressing scattering dust was prepared.

Example 8

Pour 10 g of powdered glutinous rice into 100 g of water, heat at 80-90° C. for about 10 minutes to make a highly viscous liquid, and then add 10 g of sodium silicate, 3 g of sodium hydroxide, and 50 g of water to suppress the scattering dust of Example 8. For composition 8 was prepared.

Example 9

In Example 1, a composition 9 for suppressing scattering dust of Example 9 was prepared in the same manner as in Example 1 except that 50 g of rice was used instead of 50 g of glutinous rice.

For the compositions of the above examples, the degree of suppression of scattering dust and the degree of suppression of spontaneous ignition were evaluated in the following manner.

Experimental example One

50 g of the compositions of Examples 1 to 9 were sprayed onto 500 g of coal with a spray device, respectively. As a control, 500 g of a separate sample of coal that was not sprayed with the composition was used.

The coal of the above examples and the coal of the control group were dried at room temperature for 24 hours, respectively, and weighed to be 500 g, and the coal was blown with air at a speed of 30 km/sec for 5 minutes under the same conditions. Then, the weight of each sample was measured.

In the measurement, the weight of the coal to which the composition of Example 1 was applied was 490 g, whereas the weight of the coal of the control group was 350 g. The weights measured before drying were 470 g and 350 g, respectively.

In addition, the weight of the coal to which the composition of Examples 2 to 4 was applied was in the range of 460 to 495 g.

Coal to which the composition of Examples 5 to 9 is applied has a weight of 485 g (Example 5), 487 g (Example 6), 487 g (Example 7), 488 g (Example 8), 483 (Example 9), respectively, in that order ) was

The above results show that when the composition of Examples of the present invention is treated, scattering dust is effectively suppressed as compared to the control coal sample that is not treated with the composition for suppressing scattering dust.

Experimental example 2

Coal samples 1 and 2 were prepared by spraying the compositions of Examples 6 and 8 onto coal in a ratio of 100:1 to the weight of coal. Separately, a control coal sample 3 to which the composition was not applied was prepared.

500 g of each of the samples 1 to 3 were heated to 650° C. in an electric furnace under the same conditions, respectively, and the ignition start temperature and time from the start of the temperature increase to ignition were measured.

As a result, the control sample 3 ignited at 620° C. and 32 minutes 10 seconds, and samples 1 and 2 ignited at 626° C. for 40 minutes 50 seconds and 625° C. for 40 minutes 25 seconds, respectively.

The above results show that the ignition initiation temperature can be increased by about 5% to about 15% to suppress spontaneous ignition when treated with the composition of the present invention compared to when the composition is not treated.

Claims (17)

rice, glutinous rice or a combination of rice and glutinous rice;
silicates;
hydroxide salts; and
A composition for suppressing scattering dust, comprising an aqueous solvent. According to claim 1, wherein the rice, glutinous rice or a combination of rice and glutinous rice, based on the total weight of the composition for suppressing scattering dust is 1% to 20% by weight, the composition for suppressing scattering dust. According to claim 1, wherein the composition, glycerin, a polyhydric alcohol other than glycerin, or a combination thereof; And further comprising one or more additives selected from the group consisting of boron compounds, scattering dust suppression composition. According to claim 1, wherein the hydroxide salts are sodium hydroxide, potassium hydroxide, aluminum hydroxide, at least one selected from the group consisting of magnesium hydroxide, scattering dust suppression composition. According to claim 1, wherein the silicate is sodium silicate, potassium silicate, aluminum silicate, at least one selected from the group consisting of magnesium silicate, scattering dust suppression composition. [Claim 6] According to any one of claims 1 to 5, wherein the composition has an additional spontaneous ignition prevention ability, the composition for suppressing scattering dust. The composition for suppressing scattering dust according to any one of claims 1 to 5, wherein the aqueous solvent is water. The method according to any one of claims 1 to 5, wherein the rice, glutinous rice or a combination of rice and glutinous rice is added to the aqueous solvent in the form of a powder and heated at a temperature of 60°C to 120°C. A composition for suppressing dust. The composition for suppressing scattering dust according to any one of claims 1 to 5, wherein the scattering dust is dust derived from coal, ash, limestone, aggregate, anthracite, silt, or iron ore, or dust on a road. The composition for suppressing scattered dust according to any one of claims 1 to 5, wherein the composition is applied in the form of a spray or application. A method for producing a composition for suppressing scattering dust,
the method,
adding rice, glutinous rice or a combination of rice and glutinous rice to an aqueous solvent and heating to a temperature of 60° C. to 120° C. to provide liquid rice, glutinous rice or a combination of rice and glutinous rice;
The composition is rice, glutinous rice or a combination of rice and glutinous rice; silicates; hydroxide salts; and an aqueous solvent;
Method for producing a composition for suppressing scattering dust. The method of claim 11, wherein the method further comprises adding a separate aqueous solvent after providing the liquid rice, glutinous rice or a combination of rice and glutinous rice. The method of claim 11, wherein the rice, glutinous rice, or a combination of rice and glutinous rice is 1 wt% to 20 wt%, based on the total weight of the scattering dust suppression composition. rice, glutinous rice or a combination of rice and glutinous rice; silicates; hydroxide salts; And a composition for suppressing scattering dust comprising an aqueous solvent, comprising applying to a specimen for suppressing scattering dust, a method for suppressing scattering dust on a sample. 15. The method of claim 14, wherein the sample is coal, ash, limestone, aggregate, anthracite, silt, iron ore, or on a road. rice, glutinous rice or a combination of rice and glutinous rice; silicates; hydroxide salts; and applying a composition comprising an aqueous solvent to the subject for suppressing ignition. The method according to claim 16, wherein the sample is coal, ash, aggregate, or anthracite.