KR102557229B1 - Acomposition for prevention of scattering a dust and anti self-ignition 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

Eco-friendly scattering dust suppression and spontaneous ignition suppression composition and its manufacturing method {Acomposition for prevention of scattering a dust and anti self-ignition 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 technique for preventing coal and ash, including fine dust, from being blown away in the wind by transportation or storage, and preventing spontaneous ignition when coal is heavily loaded. In addition, it relates to an environmentally friendly material for preventing the blowing of fine dust such as automobile tires on the road.

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

In particular, it is known that fine dust of 10 μm or less is easily introduced into the body through the respiratory system and deposited in the bronchi or lungs to deteriorate lung function and immune function of the human body.

In addition, fine dust such as coal dust or ash has a high spontaneous ignition rate, and the risk of fire caused by it in the dry winter season is also a big problem.

Conventional methods for suppressing scattering dust include spraying an aqueous solution of an inorganic compound such as magnesium chloride, calcium chloride, or calcium carbonate. However, inorganic compounds have a weak cohesive force of scattering dust, have a low scattering dust suppression effect compared to the amount used, and have limitations in acidifying soil.

In addition, there are chemical products such as PEA and acrylic as fine dust reducing agents, which suppress the scattering and dispersion of fine particles by spraying and applying viscous substances such as PEA or acrylic to powder such as coal and roads, but do not affect the surrounding environment such as fishing grounds. negatively affects

As described above, fine dust has small particles, so it is easily blown by the wind, so it is difficult to transport and store, and this difficulty causes various problems that harm people's health. However, conventional technologies cause other environmental problems or are not sufficient in terms of dust removal. did not

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

One aspect of the present invention is rice, glutinous rice or a combination of rice and glutinous rice; And it relates to a composition for suppressing scattering dust containing an aqueous solvent.

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

The method comprises 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 be rice, glutinous rice or a combination of rice and glutinous rice; And it relates to a method for producing a composition for suppressing scattering dust comprising an aqueous solvent.

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

Another aspect of the present invention is rice, glutinous rice or a combination of rice and glutinous rice; And a method for suppressing scattering dust comprising applying a composition containing an aqueous solvent to a specimen for suppressing scattering dust.

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

In addition, the composition or method according to the present invention can minimize the impact on the surrounding environment by using eco-friendly rice or glutinous rice, is harmless to the human body, and has excellent water resistance because the effect of preventing scattering is maintained even after moisture evaporation.

In addition, the composition and method according to the present invention has an effect of effectively preventing spontaneous combustion of coal or the like as well as effectively suppressing scattering dust.

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

It relates to a composition for suppressing scattering dust containing 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 coagulate dust such as coal dust to coarsen its size. This prevents scattering and further forms a film on the surface of dust to block contact with air, thereby suppressing spontaneous combustion 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 powder form 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. It may be heated at the above temperature for, for example, about 2 minutes to about 30 minutes, specifically about 3 minutes to about 20 minutes. When heated to the above range, the rice or glutinous rice is gelatinized, the viscosity increases, and a translucent colloidal material may be formed.

In one example, it can be used as a composition for suppressing scattering dust in this state, or it can be used as a composition for suppressing scattering dust by adding a separate aqueous solvent thereto. The weight of the aqueous solvent 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.

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% by weight to 15% by weight, and if the range is above, it may have a degree of viscosity suitable for scattering dust removal efficiency and spraying.

The term 'rice' herein may mean all kinds of rice other than glutinous rice, and may mean nonglutinous rice in specific embodiments.

Glutinous rice is superior to rice in terms of fugitive dust removal efficiency, and furthermore, glutinous rice or rice is superior to general starch in fugitive dust suppression efficacy. Although not bound by a particular theory, this is probably due to differences in the composition of starch. The starch in rice has a structure in which amylose and amylopectin chains are regularly packed together, and water molecules penetrate between these chains to break the close-packed structure. This results in an irregular and loose structure. Glutinous rice is mostly composed of only amylopectin, so this structure becomes a much more entangled structure, and it is thought that the scattering dust suppression effect is better. As a result of comparative experiments between glutinous rice and starch in the same manner as in Example 1 and Experimental Example 1 described below, the experimental results showed that glutinous rice was improved by about 45% compared to starch.

As used herein, the term 'fugitive dust' may mean dust derived from coal, ash, limestone, aggregate, anthracite, soil, or iron ore, or dust on a road.

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

The composition, in one example, glycerin, a 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 scattering dust removal capability or spontaneous combustion prevention capability. 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 in terms of preventing spontaneous combustion, it is good to add silicates or hydroxides.

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 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 disodium octaborate, tetrahydrate, or a modified compound thereof.

The one or more additives are included in an amount of 0.01 wt% to 20 wt%, specifically, 0.05 wt% to 15 wt%, and more specifically, 0.5 wt% to 10 wt%, based on the total weight of the scattering dust suppression composition. 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: silicate: hydroxide may be 100 to 300: 1 to 30: 1 to 30: 0.1 to 10.

In one example, the weight ratio of aqueous solvent: glutinous rice or rice: glycerin: silicate: hydroxide 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 specimen or in the air in the form of a spray or application.

The composition may further suppress spontaneous combustion when applied to a material (eg, coal) with a possibility of spontaneous combustion. To inhibit spontaneous combustion, the composition may further include silicates or hydroxides.

The amount of the composition may be applied in an amount of about 1% to about 100% by weight, specifically about 3% to about 90% by weight, and more specifically about 5% to about 80% by weight based on the weight of the specimen to be treated. .

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

The method comprises 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 be 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.

In the above aspect, the description of the composition for suppressing scattering dust is the same as that of the above-mentioned aspect, so this can be referred to.

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

Another aspect of the present invention is rice, glutinous rice or a combination of rice and glutinous rice; And a method for suppressing scattering dust comprising applying a composition containing an aqueous solvent to a specimen for suppressing scattering dust.

Hereinafter, the present invention will be described in more detail through examples. However, these examples are for illustrating the present invention by way of example, and the scope of the present invention is not limited to these examples.

Example

Example 1

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

Example 2

In Example 1, using 50g of glutinous rice, except that it was poured into 150g of water, it was carried out in the same manner as in Example 1 to prepare a composition 2 for suppressing scattering dust of Example 2.

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 added and mixed in the same manner as in Example 1 to prepare a composition 3 for suppressing scattering dust of Example 3 .

Example 4

In Example 1, the scattering dust suppression composition 4 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 powdered glutinous rice was poured into 100 g of water, heated at 80 to 90 ° C for about 10 minutes to make a highly viscous liquid, and then mixed with 50 g of glycerin and 100 g of water to prepare composition 5 for suppressing scattering dust of Example 5 did

Example 6

10g of powdered glutinous rice was poured into 100g of water and heated at 80 to 90 ° C for about 12 minutes to make it a highly viscous liquid, and then additionally mixed with 10g of sodium silicate, 3g of sodium hydroxide, and 50g of water to suppress scattering dust in Example 6 Composition 6 was prepared.

Example 7

10 g of powdered glutinous rice was 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, 10 g of sodium silicate, 3 g of sodium hydroxide, and 50 g of water were additionally mixed to obtain Example 7. A composition 7 for suppressing scattering dust was prepared.

Example 8

10g of powdered glutinous rice was poured into 100g of water and heated at 80 to 90 ° C for about 10 minutes to make it a highly viscous liquid. Then, 10g of sodium silicate, 3g of sodium hydroxide, and 50g of water were additionally mixed to suppress scattering dust in Example 8. Composition 8 was prepared.

Example 9

In Example 1, the scattering dust suppression composition 9 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 inhibition of spontaneous combustion were evaluated in the following manner.

Experimental Example 1

50 g of the compositions of Examples 1 to 9 were respectively sprayed on 500 g of coal with a spraying device. As a control, a separate 500 g sample of coal without spraying the composition was used.

After drying the coals of the above examples and the control group at room temperature for 24 hours, respectively, they were weighed to 500 g, and blown for 5 minutes with air at 30 km/sec under the same conditions. Then, the weight of each sample was measured.

At the time of 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 compositions of Examples 2 to 4 were applied was in the range of 460 to 495 g.

Coal to which the composition of Examples 5 to 9 was applied had a weight of 485 g (Example 5), 487 g (Example 6), 487 g (Example 7), 488 g (Example 8), 483 g (Example 9 ) was

The above results show that fugitive dust is effectively suppressed when treated with the composition of Examples of the present invention compared to the control coal sample not treated with the fugitive dust suppression composition.

Experimental Example 2

Coal samples 1 and 2 were prepared by spraying the compositions of Examples 6 and 8 onto coal at a ratio of 100:1 to the weight of coal. Separately, a control coal sample 3 to which no composition was applied was prepared.

500 g of each of Samples 1 to 3 was heated up to 650° C. in an electric furnace under the same conditions, and the temperature at which ignition started and the time from the start of temperature elevation to ignition were measured.

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

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

Claims (17)

Glutinous rice having the same viscosity as amylopectiin in the solvent (water) is heated at 75 ℃ ~ 110 ℃ for about 2 minutes to 30 minutes, characterized in that the weight ratio "water-soluble solvent (water) 100 ~ 300": "glutinous rice 1 ~ 30": A liquid composition for suppressing scattering dust and spontaneous combustion, further comprising Disodium octaborate and tetrahydrate in a composition of "glycerin 20-100" delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete